B - Parting and Grooving

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Parting and Grooving

Cutting off and making grooves

In parting operations, the objective isto seperate, as efficiently and reliably

as possible. one part of the workpiece

from the other. A straight cut is made to

a depth equalling the workpiece radius

of a bar. In grooving operations, the prin-

ciple is the same but with the difference

that the cut is shallower and not taken to

the centre. Grooving operations are less

sensitive in some respects because the

grooves are usually not as deep, instead

shape, accuracy and surface finish are

often demands that need more atten-

tion.

The machining process can be compared

to a facing operation in turning, where

the tool is fed radially into the centre, the

difference being that in the parting ope-

ration, the tool is a thin blade making a

narrow groove. There is material on both

sides of the tool and thus the material

to be cut through should be as little as

possible and the width of the cutting edge

should be small. This makes considera-

ble demands on the performance, chipforming and stability of the parting tool.

As the tool moves to the centre, and if

the spindle speed is kept the same, the

cutting speed will gradually decrease un-

til it reaches zero at the centre. In CNC-

lathes, the spindle speed is increased

as the tool moves towards the centre.

Any decrease in cutting speed is disad-

vantageous for the tool and one that can

make severe demands on the cutting

edge. As the edge approaches the cen-

tre, pressure increases as the tool is fed

in at the decreasing cutting speed.

Chip evacuation is also a critical factor

in parting operations. There is little opp-

ortunity of breaking chips in the confined

space as the tool moves deeper. The

chip-formation geometry of the cutting

edge is devoted largely to form the chip

in order for it to be evacuated smoothly.

Consequences of poor performance in

this respect are chip obstruction which

leads to poor surface quality and chip

jamming, leading to tool breakdown.

External operations : 1. Parting off, 2. Grooving, 3. Turning, 4. Profiling,

5. Undercutting, 6. Face-grooving, 7. Threading


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Machining factorsModern parting and grooving tools are,

in addition to being very productive, also

versatile. Most types of turning ope-

rations can be carried out with todays

indexable insert tools. Generally, opera-

tions that do not require the large over-

hang that the adjustable blade type oftool offers, should be performed by the

shank type or Coromant Capto tool,

where the blade is an integrated part of

the toolholder. Maximum rigidity, which

is vital in parting, grooving, profiling and

turning operations, is offered by this de-

sign. However, the adjustable blade type

tool does have an added advantage in

that it offers the flexibilty of having adjus-

table overhang when different diameters

and deep groove-depths are involved.

It provides the shortest overhang with

maximum stability for different bar dia-

meters.

The main cutting data and tool definitions

in parting and grooving operations are:

cutting speed (vc) which is the surface

speed at the cutting edge

spindle speed (n), the machine spindle

revolutions per minute

the straight, radial feed towards thecentre (fnx)

the radial depth of cut capability of the

tool (ar) - the distance from outer dia-

meter to the centre or bottom of groove

Vc

fnx ar

Parting and grooving tools for different applications.


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Tool SelectionGenerally, minimize tool deflection and

vibration tendencies through :

- selecting the toolholder or blade withthe smallest overhang,

- choosing the largest possible shank

dimensions on the toolholder

- choosing the blade or toolholder with

the largest possible insert seat (width)

- choosing a blade height which is at

least equal to the insertion length

First tool choice for parting operations

should be tool blocks with blades, where

the blade can be adjusted to optimize

the tool reach/tool overhang. Screw-

clamp type insert clamping is the best

choice from a stability point of view. A

reinforced toolholder will increase stabi-

lity even more.

The tool overhang should not exceed 8

times the insert width.

Different entering angles rhave their uses:

The neutral insert provides a strong cut-

ting edge with the cutting forces being

mainly radial, providing a stable cutting

action, good chip formation and tool-life,

and excellent results through alignment

in cut. There are three types : neutral (N),

where the cutting edge is at right angles

to the feed direction of the tool with an

entering angle of zero degrees; right (R)

and left (L) handed inserts - each havingan entering angle of a few degrees.

An entering angle of a few degrees is,

however, useful in parting operations

in that the end of cut can be finished

more advantageously. If a neutral insert

is used, the part of the workpiece that

has been cut off is left with a very small

diameter protrusion (pip). A parting tool

with an entering angle can be used to

remove the pip when the cut part drops

away. The hand of the insert is selected

so that the leading corner of the cut-

ting edge is next to the part being cut

off. The pip is then left on the workpiece

while still in the machine and removed

by the cutting edge that faces throughto the centre. Burrs will also be reduced

through the effect of the entering angle.

Inserts with an entering angle of 5 de-

grees are available in CF, CM and CR

geometries. Inserts with 10 and 15 de-

grees entering angles are available in CS

geometry.

Tool block with spring-clamp tool blade for tool overhang adjustment and a reinforced blade.

Cutting off the pip in par ting operations.

RH

N

LH

Pip and burr free machining.

Parting off

Entering angles.


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To avoid or minimize pips and burrs, use

a sharp (ground) insert, right- or left-

handed (GF and CS for instance) with

the smallest possible angle. Although a

large angle reduces pips and burrs, the

tendency is for the cut to be more une-

ven and surface finish and tool-life not to

be optimum. The size of the pip is alsoaffected by how the workpiece part that

is cut off breaks away because of the

centrifugal forces. The size and length of

this part affects the point of parting and

for this reason, the size of the pip can be

minimized by supporting the growing in-

stability of the workpiece being cut off.

Select dedicated inserts for the opera-

tion in question for best performance

and results.

For large depths of penetration in par-

ting, the double-ended blade solution is

recommended.

For parting small diameter bars or com-

ponents, cutting forces should be mi-

nimized through selecting small insert

widths and sharp cutting edges (such as

geoemtries CS and CF).

When parting thin-walled tubes, minimize

the cutting forces by using sharp inserts

with the smallest posible width, for in-

stance CF and CS geometries.

The choice of insert-width is a compromise

between tool strength and stability on the

one hand and workpiece material saving

and lower cutting forces on the other.

Application factorsFor maximum stability during machining,

screw-clamp toolholders are always re-

commended when any axial machining

(turning) is involved. A spring-clamp

tool is only recommended for radial

machining, such as in parting off.

Recommended torque values are pro-

vided for the screw-clamp type tools. It

is important to follow these and not to

over-tighten the screw the maximum

torque is about 50% higher than what

the table indicators.

Feed rate reduction is often advanta-

geous for performance when machining

towards the centre to minimize the

pressure on the cutting edge. Also be-

cause of the reducing pip size, the feed

should be reduced by up to 75% when

approaching the centre, around 2 mm

before the part comes off. Cutting data

should be adapted so as to minimize

possible vibration. This may lead to the

tool-life being doubled.

Stop the parting off operation before

reaching the centre because, due to its

weight, the disc in question could fall off

before completion. Leave the pip on the

bar to be faced off with a conventional

tool.

Parting off with CoroCut 2.

Spring-clamp tool for radial cuts and screw-clamp tool for radial and axial cuts.

Feed reduction towards centre.


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Cutting fluid should be used with copi-ous amounts directed onto the cutting

edge. Coolant should be supplied con-

stantly while the insert is engaged in

cut. A coolant adaptor can be mounted

with the supply directed from above.

For tool blocks with a parting blade, the

coolant supply can be connected above

or from either side of the block.

Tool positioning is an important factor

for success in parting and grooving ope-

rations. It is vital for the cutting tool to

be mounted accurately at a right angle

to the centre line of the workpiece to

be machined. Deviations will mean ad-

ded stresses on the blade as it is fed

into the workpiece and result in machi-ned surfaces that are not flat. Vibrations

arise and chip formation is often disad-

vantageous.

The tool position as regards the centre

height of the cutting edge is also impor-

tant. Deviations from the workpiece cen-

tre line should not be more than +/- 0.1

mm. Excessive deviations change the cut-

ting action with higher cutting forces. This

can also lead to added friction between

tool and workpiece resulting in reduced

tool-life which also affects the size of the

pip.

Creating the best stability for the cut-

ting tool set-up is especially important

in parting and deep grooving operations.

The tools involved have long thin blades

which are necessary because of the

need for accessibility. The overhang of

the blade should be minimized with the

smallest possible tool reach (ar) which

means that the adjustable blade is, in

many cases, the best alternative, eventhough the shank tool with integrated

blade is the most rigid. Wider insert

widths (la) can be used to improve stabi-

lity but at the expense of wasting more

material in the cutting off operation.

The largest possible tool-shank (h and b

dimensions) should be chosen as well

as the largest blade height (h1) and in-

sert seat width (la).

When parting a bar with a drilled hole,

ensure that the depth of the hole is suffi-

cient for the width of the insert. If the hole

has been drilled with a pointed drill and

the parting tool has to enter the coned

part of the hole, the blade may deflect,

generating excess forces on one corner

of the insert and which may lead to insert

chipping and inconsistent tool-life.

Mounting an insert in the CoroCut spring-

clamp tool involves using an excentric

key to open the insert seat for the insert

to be pushed into place. Removing the

insert involves a similar procedure to

pulling the insert out of the seat.

Mounting an insert in the Q-Cut spring

clamp should always be preceeded by

applying a little coolant or oil on the insert

seat to further increase the toolholder

life. Use the special Q-Cut key for moun-ting and removing inserts to avoid cutting

edge damage. No pivot-holes are provided

in either the 570-type exchangeable head

tool (R/LAG 551.31) for parting and face

grooving. For these items, a small rubber

mallet should be used to tap the insert

into its position. The tip of the yellow key

should be used to extract the insert.

Typical clock-spring chips from

parting off.

Centre-height accuracy of cutting edge is important.

Important right-angle positioning of tool.

Cutting into a drilled hole correctly.

Cutting fluid is important in parting

and grooving.


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Machining grooves has many similarities

to parting off, especially deep grooves. Alt-

hough the same toolholder systems can

be used for both parting and grooving in

many instances, the insert geometries are

dedicated to provide optimum performan-

ce and results. Grooves vary : there are

shallow grooves, deep grooves, wide groo-

ves, external grooves, internal grooves and

face grooves.

For single grooves, a suitable insert is

applied to match the size and limits while

wider grooves can be machined in various

ways. Dedicated insert geometries, forlow and high feed applications, contribute

towards optimizing the grooving operations

by giving specific benefits.

For single-cut grooving generally, straight

cuts can be made for groove widths of

up to 8 mm giving the best method, chip

control and tool-life. Tailor Made inserts

are made to match the specific groove

size. Chamfers can also be part of the pro-

gramme. Insert geometry GM is recommen-

ded for general groove turning and GF for

precision grooving. Processes should be

optimized in relation to the production volu-

me. The TF and CF insert geometries have

Wiper design on the side in order to gene-

rate high surface finish on the sides of thegroove. Chamfering of the groove can be

carried out with the CoroCut 2 system using

the corners of the grooving insert. For volu-

me production, the Tailor made alternative

of an insert that produces the complete

form of the groove should be considered as

this often halves the machining time.

The most common methods of rough-

machining wide grooves, or turning bet-

ween shoulders, are : multiple grooving,

plunge turning and ramping. A separate

finishing operation is usually required.

Grooving

- If the width of the groove is smaller

than the depth, multiple grooving is the

most suitable method.

- If the width of the groove is larger than

the depth, plunge turning is the best

method.

- If the bar or component in question isslender or weak, ramping is recom-

mended.

For multiple grooving (step-over grooving)

cuts to make a wide groove, the widest

possible insert should be used and in

an alternative plunging-order. The best

chip-control and tool-life is obtained by

using an insert width leaving rings which

are then removed. The insert corner is

protected and chips are directed into the

middle of the chipbreaker. Recommen-

ded ring width is 0.6 to 0.8 times the

Machining a wide groove.

Inserts for single grooving cuts and shallow

grooving toolholders.

Multiple grooving, plunge turning and ramping are methods to make wide grooves.


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insert width. It is often more suitable for

small batch production and face groo-

ving. This is a flexible method which is

quick to programme and geometry GM is

the first choice for this method.

For plunge tuning of wide, shallow groo-

ves, the axial turning depth should not be

larger than 0.75 times the insert width.

Geometries TF and TM are designed for

axial and radial feed directions and are

recommended for both plunging and ram-

ping of grooves. Chip control is usually

advantageous. To improve the machining

process and tool-life, lower the cutting

forces prior to changing feed direction to

minimize vibration tendencies, stop the

feed in corners to minimize vibrations.

Strive to make use of the three edge-zones (two sides and one end) of each

insert to maximize utilization.

Ramping of wide grooves, involves twice

the number of cuts but is suitable for

when the bar or component is slender or

weak. Radial forces are smaller, thus ge-

nerating less vibration tendencies. Chip

control is also good and notch wear is

reduced especially when making groo-

ves in workpiece materials with poorer

machinability.

To achieve the best roughing results in

the form of a flat groove-bottom with the

best groove-side quality, see under Tur-

ning and Profiling.

To acheive the best finishing results,

care should be taken when machining

the corners of the groove. As the insert

cuts the radius of the corners, most of

the tool movement will be along the z-

axis. This produces a very thin chip at

the front cutting edge which may lead to

rubbing instead of cutting and hence vi-

bration tendencies. To prevent this, the

axial and radial depth of cut should be

0.5 1.0 mm and the first cut should be

made into the groove, axially, where the

groove radius joins the flat bottom. Then

optimize the process in relation to the

batch sizes. The Wiper effect generates

good surface finish with Ra values down

to 0.2 microns.

Multiple grooving a wide groove.

Plunge turning a wide groove.

Turning operation.

Finish machining a wide groove.


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Circlip groovingThe need for circlips on shaft and axle

components is very common and there

are two systems suitable for these ope-

rations. Both systems have specific

widths for circlip grooves.

First choice is the three-edge T-Max U-Lock154 system with groove widths of 1.15 to

4.15 mm for external and internal appli-

cations.

There is a tool cost advantage with the 3

cutting edges.

Second choice is the CoroCut 2 system

using the GF insert geometry with widths

1.85 to 5.15 mm for external applications.

UndercuttingRecesses for clearance, such as for sub-

sequent grinding operations on various

shafts and axles, require dedicated in-

serts with round cutting edges that are

sharp and accurate. For this there are

small and large applications.

For the shallow recesses, CoroCut 1 or

2 with RO and RM insert geometries are

recommended.

For deeper recesses, T-Max Q-Cut system

with insert geometry 4U is recommended.

Face groovingMaking grooves axially on the faces of

components requires tools dedicated for

the application. A face grooving tool has to

be made to clear the round groove which it

is making the toolholder has to be cur-

ved. Both the inner and outer diameter of

the groove needs to be taken into account

for the tool to be accommodated.

First-cut diameter ranges are indicated forvarious tools. When a groove is machined

in several cuts, only the first cut needs to

be considered as the tool is then accomo-

dated to machine smaller groove diame-

ters.

For face grooving, the following general

points apply :

- minimize tool overhang to limit any

vibration tendencies

- keep the infeed rate low during the

first cut to avoid chip jamming

- start machining the largest diameter

and work inwards to obtain the best

chip control

- if chip control during first cut is unsatis-

factory, dwelling can be introduced.

Circlip grooving with U-Lock (left) and CoroCut 2 (right).

Facegrooving

Undercutting

Choice of RH and LH tools

depending upon rotation.

LH

RH


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Wider face grooves can bemachined in different ways :1. Roughing through multiple grooving

cuts, where 0.5 to 0.8 times the insert

width is used to open up the groove to

the required width after the first cut. A

finishing cut can then be made along

the sides of the grooves and the groo-ve bottom face.

The largest diameter should be cut

first followed by work continuing in-

wards. The first cut is with chip con-

trol but not chipbreaking. The following

cuts are with chipbreaking. When re-

tracting, offset the insert slightly from

inner edge of groove.

2. The second roughing method involves

plunge cutting and finishing as in

the previous method. The axial depth

should not be deeper than 0.75 times

the insert width. A good indicator is

that if the groove is wider than it is

deep, plunge turning is recommended.

If the groove is deeper than it is wide,

multiple grooving is recommended.

3. Finishing can also be performed ac-

cording to three cuts : cut 1 within

given diameter range and face towards

the radius; cut 2 finish outer diame-

ter and radius and face inwards; cut 3

finish the inner diameter to the cor-

rect groove dimension.

If the inner side of the tool

blade rubs against the

groove side, make sure

it is the correctly cho-

sen tool for the diame-

ter range in question,

lower the tool slightly

below the centre-line

and make sure the tool

is parallel to the axis of

rotation.

If the outer side of the tool

blade rubs against the groove

side, make sure the tool is correctly

chosen for the diameter range in ques-

tion, lift the tool slightly above the centre

line and make sure the tool is parallel to

the axis of rotation.

Toolholder selection is critical for face groo-

ving from the CoroCut 1 and 2 systems as

well as T-Max Q-Cut and CoroCut SL. For

grooving depths of up to 4.5 mm, a special

toolholder for shallow face grooves shouldbe selected. Suitable inserts are grooving

and turning insert geometries type GM,

TF and RM. For small first cut diameters,

T-Max Q-Cut 7G and 7P are suitable.

Internal groovingMost of the methods for external groo-

ving can be applied to internal grooving.

Precautions may have to be considered,

as with boring in general, to ensure chip

evacuation and to minimize vibration ten-dencies. Tool size, overhang and set-up

should be optimized and tuned bars be

a possible solution, especially when the

tool overhang is 3-7 times the tool diame-

ter. CoroCut SL is a good solution where

tool assemblies can be made to optimize

the application. Solid and tuned adaptors

are available within the SL-system.

CoroCut with dedicated insert geome-

tries GF, GM, TM and TF are suitable for

internal grooving For smaller holes (dia-

meters below 25 mm) the T-Max Q-Cut

151.3 system with insert geometry 4G

is recommended.

Multiple grooving or plunge grooving,

especially with narrow inserts, reduces

vibration tendencies when making wide

grooves. Finishing operations can then

be performed seperately.

Chip evacuation is facilitated by star-

ting machining at the bottom of the

hole and machining outwards.

Use the best choice of right- or left-han-

ded insert to direct chips especially in

roughing.

1

2

3

1

2

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3

Facegrooving

Internal grooving

1

3

2

Different methods of making wide face grooves.


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Turning and profilingModern parting and grooving tool sys-

tems can also perform turning opera-

tions for which there are dedicated insert

geometries. The stability of the CoroCut

system provides it with the capability

of machining at high cutting data even

when exposed to the radial forces during

axial turning.

When profiling of various shapes is re-

quired, the CoroCut systems offers

scope for rationalization since one tool

can be used to replace right-hand and

left-hand conventional tools. The round-

shape inserts have dedicated geome-

tries for these operations, for instance

RM for medium feed rates and tougher

machining conditions; RO for stainless

steel and sticky workpiece materials and

AM, which is a sharp, positive profiling

geometry for non-ferrous materials such

as aluminium. RE is recommended for

hard hard steels and RS for finishing

non-ferrous materials. The CoroCut sys-

tem offers unique stability with the railseat design and the Wiper effect good

surface finish.

Tool deflection always occurs to some

extent and some compensation may be

necessary for the difference in diameter

machined. The difference should be esta-

blished and the tool drawn back so that

the correct diameter can be machined.

The adjoining diagram illustrates this pro-

cess.

A screw-clamp toolholder should be se-

lected for turning and profiling operations

in view of achieving maximum stability. ACoroCut or Q-Cut tool with the shortest

possible tool accessibility (ar) should be

applied (for Q-Cut holder type 22). If for

reasons of accessiblity this is not pos-

sible, apply a holder with a longer dimen-

sion (for Q-Cut holder type 23) with cut-

ting data reduced accordingly.

A neutral CoroCut tool is suitable for

both opening up or completing a recess,

however, when machining with conven-

tional tools a right- and left-hand tool isrequired to achieve the same result.

In-copying is recommended to improve

chip control, minimize tool wear and to eli-

minate the tendency of the insert working

loose. To achieve perpendicular groove or

recess walls, radial plunging should be

carried out at each end, not one plunge

followed by turning and out-feeding.

Profile turning

Compensation on workpiece diameter.


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When it comes to roughing, limiting de-

flection is often an issue. Forces on the

insert should therefore be reduced prior

to changing direction of cut according to

the following sequence :

1. Infeed radially to the required depth of

cut (ap max 0.75 times insert width)2. Retract radially 0.1 mm

3. Turn axially to opposite shoulder

position

4. Retract diagonally 0.5 mm to outside

the component

5. Feed axially to the end position (still

0.5 mm off the machined diameter)

6. Infeed radially to the required depth

of cut.

Retract radially 0.1 mm and continue the

sequence for subsequent roughing pas-

ses.

Turn axially in both directions to use both

corners of the insert and to maximize

tool-life.

The machining of a wide groove can be

performed using one tool, where two con-

ventional tools might be needed. Care

should then be taken when machining the

bottom radius or chamfer. As the insert

contours the radius, most of the move-ment will be in the z-direction, which gene-

rates a thin chip at the front cutting edge.

This may lead to rubbing between tool and

component, rather than just cutting, and

consequently more wear and vibration

tendencies. Following the right sequence

will help to prevent this from occurring.

(See under finishing wide grooves).

When machining wide, shallow grooves

internally, the most suitable method is

to plunge turn. However, chip evacuation

needs attention, making sure that chips

are removed out of the hole and not jam-

med in the machining process. Chips

will always flow in the same direction as

the feed and it is therefore recommen-

ded that the direction of feed is always

towards the hole opening.

For shallow grooving with 166.0 toolhol-

der, it is important that a shim giving an

inclination angle of zero degrees is used

in the toolholder. For machining small

holes with toolholders not having shims,grooving bars 154.0 should be used.

to recommended levels should be used

to ensure the best cutting action.

If a sufficiently high feed is used with a

small D O C (or low feed and large D O C),

sufficient deflection of the tool will take

place to provide the insert with the clea-

rance needed at the front cutting edge.But if both feed and D O C are below

recommended values, insert clearance

may be insufficient and rubbing take

place between insert and machined sur-

face, giving rise to vibration tendencies

and poor surface finish.

A solution, therfore, may be to use insert

geoemtry TF, having a concave cutting

edge, which will minimize the contact

between insert and workpiece. Insert

geometries TF (lower feed), TM (higher

feed) and GF are designed to be used for

axial turning.

When plunging into or profiling corners

with round inserts, a phenomenon known

as wrap around is a problem that may oc-

cur. A large part of the cutting edge is en-

gaged in cut which leads to considerable

pressure on the insert. If the feed rate

is reduced excessively, however, vibration

tendencies are generated. The problem

is usually solved by applying the smallest

possible insert radius in relation to the ra-dius to be machined on the component.

A good starting point is for the feed rate

when plunging into the radius to be 50%

of that applied for the axial cut. If the in-

sert radius has to be the same as that

of the workpiece, introduce micro-stops

(dwelling) which shortens chip length and

breaks any vibration tendencies.

fn1= parallel cuts - max. chip thichness 0.15-0.40 mm

fn2= radius plunging - 50% max. chip thickness

Solving wrap around effect in plunging.

Rough turning a wide groove.

Turning corners with round inserts.

Right-hand inserts can be used in right-

hand external and left-hand internal tool-

holders. Left-hand inserts can be used

in left-hand external and right-hand inter-

nal toolholders.

When it comes to axial turning with

CoroCut tools, the Wiper effect makes it

posible to generate a high surface finish

(Ra values smaller than 0.5 microns can

be achieved along with high bearing rati-

os). High feed rates and D O C according


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How to choose your tool

Define the type of operation and system to use

Identify the operation:

Parting External or internal grooving, face grooving, shallow

grooving

External or internal turning

Undercutting, profiling and choosing the most suitable

system for it.

(See Tool selection for par ting and grooving tools)

Select the insert geometry and grade

Choose the insert geometry and grade.

Choose your insert size on the corresponding ordering

page.

(See Insert geometries and grades)

Select the tooling system and type of holder

Choose Coromant Capto or shank tool, depending on

clamping possibilities in turret/spindle.

Choose the right holder size on the corresponding

ordering page.

The insert seat must correspond to the size of the insert.

(See Selecting toolholder types)

Selecting tools for Parting and Grooving

Select cutting data

Find the recommended feed for selected insert chosen.

Choose the recommended cutting speed.

(See speed and feed recommendations for parting and

grooving geometries)

Tooling alternatives for Parting and Grooving

Coromant Capto integrated multi-taskmachines

Conventional turrets

Shanktool

Internal

Steelshan

kboring

bar

andCo

ro-

mantC

aptoad

aptor

Cutting

headwith

bar

inste

el,

carbid

ereinforced

ortun

ed

Steel

sha

nkborin

gba

r

CoromantCaptounit

External

Blade

When parting and grooving the inserts are often fed deep into

the material, which sets high demands on accessibility. This

means that the tools used are generally narrow and therefore the

length of the tool increases as the diameter increases. Tools and

tooling systems with high stability is therefore important.

1

2

3

4

CoroCut XS


14/42

B 14

Turning

A

B

C

D

E

F

G

H

CoroCut2-edge:

Cutting depths up to

20 mm

T-MAX Q-Cut (151.2):

Cutting depths above

20 mm

CoroCut 3 shallow cutting

depths -6.4mm

CoroCut2-edge:


20 mm


Min bore 20 mm

CoroCut2-edge:

Min bore 25 mm


Min bore 32 mm

T-MAX U-Lock:

Min bore 12 mm


First cut diameter from

24 mm

CoroCut2-edge:

First cut diameter from

34 mm

Parting External grooving Internal grooving Face groovingChoice of tool holder

First choice

Alternative tools CoroCut1-edge:


20 mm

CoroCut1-edge:


20 mm

Tool system

CoroCut2-edge:


20 mm

CoroCut1-edge:


20 mm

CoroCut2-edge:


20 mm

CoroCut1-edge:


20 mm

CoroCut2-edge

T-MAX U-Lock:

For circlip grooves

T-MAX Q-Cut (151.2)

T-MAX Q-Cut (151.3)

Min. bore 20 mm

CoroCut1- and

2-edge:

Min. bore 25 mm

T-MAX Q-Cut (151.2)

External turning Internal turning Undercutting Profiling Shallow grooving

T-MAX Q-Cut (151.2) T-MAX Q-Cut (151.2)T-MAX Q-Cut (151.2)

Min. bore 32 mm

Tool selection for parting and grooving tools



20 mm

CoroCut 2-edge

shallow grooves

Grooving and turning as well as profiling with CoroCut tools.


15/42

B 15

Turning

A

B

C

D

E

F

G

H

CoroCut 1- and 2-edge toolholders

F123 F123 F123 F123-S F123 F123 AG123 AX123 F123

X123 G123 G123

short long

Parting

Grooving

Face grooving

Undercutting

Profiling

Aluminium profiling

Turning

Bars

Tubes

Precision

Deep

Grooving

TurningProfiling

= Alternative tool= Recommended tool

1555 816 1232 1017 4-25 3.58.0 4.5-13 12-28Max. ar., mm

Internal

Spring/screw Screw Screw Screw Screw Screw Screw Screw ScrewClamping system

Selecting toolholder types


16/42

B 16

Turning

A

B

C

D

E

F

G

H

T-MAX Q-Cut toolholders

151.2 151.20 151.21 F151.22 F151.23 S151.22 AG151.22 AG551.31 F151.37 AF151.37 F151.42

AG151.32 0,90 151.21

35-100 13-45 15-32 816 1532 - 3.512 3.519.5 8.720 5.315 18

short long

= Alternative tool= Recommended tool

Spring/screw Spring Spring Screw Screw Screw Screw Spring Screw Screw Screw


17/42

B 17

Turning

A

B

C

D

E

F

G

H

R = right hand holder

L = left hand holder

A = A-curved

B = B-curved

90

L

A

0

B A B

L

LR

B

90

R

AR

A

0

L

R

B

CoroCut family toolholders

There is a wide range of tool holders in the CoroCut family, both

Coromant Capto cutting units and conventional shank holders,

and blades for parting. One advantage with the CoroCut family

system is the good accessibility. In many cases one CoroCut

holder can replace two or more conventional turning holders

thus increasing the productivity.

The insert seat size of the holder should correspond with the

seat size on the insert; every holder can take all the different

insert geometries available.

0, 7, 45 and 70 shank style screw clamp holders for different applications

Spring clamp blades and shank for parting

Bars and cutting head for internal applications

Choosing the right holder for face groovingThe adjoining diagram indicates the right type of tool for diffe-rent face grooving applications.

CoroCut and Q-Cut external holders for face grooving are availa-

ble in B-curved design as stocked item. A-curved design can be

ordered as Tailor Made.

0 and 90 screw clamp holders and 0 bars for face grooving


18/42

B 18

Turning

A

B

C

D

E

F

G

H

Face grooving

blades

CoroCut SL blades CoroTurn SL adaptors

Neutral

Right hand Left hand

CoromantCapto 0

CoromantCapto 45

Shank 0

T-Max Q-Cut SL151.2

CoroCut SL123

CoromantCapto 0

CoromantCapto 45

Shank 0

T-Max Q-CutSL 151.2

CoroCutSL 123

Right hand Left hand

CoroCut SL blades

Face grooving

blades

CoromantCapto 90

CoromantCapto 90

Shank 90

CoroCut SL blades

CoroCut SL blades

Neutral

Right hand

Coromant

Capto 90

Coromant

Capto 90

T-Max Q-CutSL 151.3

CoroCut SL123

Coromant

Capto 90

Boring bar

90

Left hand

Left hand

CoroCut SL blades

Right hand

CoroCut SL123

T-Max Q-Cut SL151.3

Existing 570-cuttingheads

CoroTurn SL

Adaptors

Existing 570 bars CoroTurn SL

CoroCut SL - external machining

CoroCut SL - internal machining


19/42

B 19

Turning

A

B

C

D

E

F

G

H

Recommendations when choosing CoroCut SL cutting blades

CoroCut SL cutting blades with a screw

clamp design, should be the first choice

for all types of grooving and parting ope-

rations. By using CoroCut 1-2 edge solu-

tion there is access to insert geometries

and grades for all types of operationsand work piece materials.

T-Max Q-Cut SL 151.2 system with a

spring clamp design, is a good choice for

deep grooving and parting operations.

570-25R.. C?-570-25-LF

570-32R.. C?-570-32-LF

570-40R.. C?-570-40-LF

570-25L.. C?-570-25-RF570-32L.. C?-570-32-RF

570-40L.. C?-570-40-RF

570-25L.. C?-570-25-LX-045

570-32L.. C?-570-32-LX-045

570-25R.. C?-570-25-RX-045

570-32R.. C?-570-32-RX-045

T-Max Q-Cut SL 151.3 system with its

new screw clamp design is an option for

internal operations especially in small

bores.

Combination of Cutting blade and Adaptor:

Parting, grooving, profiling, turning

CoroCut -SL123

Parting

Grooving

Profiling

Turning

Normal

Deep

GroovingProfiling

Min. internal diameter, mm

Max. ar, mm

Internal

Screw clamp Spring clamp Screw clampClamping system

Coupling diameter, mm

Insert width,mm

Q-Cut -SL151.2

Q-Cut -SL151.3

25. 32. 40 25. 32. 40 25. 32. 40

12 23 20 35 6 13

1.5 7.14 2.0 8.0 2.0 8.0

115 175 35.8 51.6

Face grooving

Screw clamp Screw clamp

CoroCut -SL123

Q-Cut -SL151.3

32

12 18

2.5 6.0

40 4001)

Face grooving

32

8.7 10.7

2.5 5.0

24 701)

1)First cut

diameter- min. max.

Alternative tool

Recommendedtool

=

=

Notrecommended

=

R

R

R

LL

L

L

L

R

R

Adaptor BladeCombina-tion


20/42

B 20

Turning

A

B

C

D

E

F

G

H

Cutting depth limitation for re-inforced CoroCut blades

Due to re-inforcement of the blade the max. cutting depth is

dependent on the work piece diameter. See adjoining diagram.

Work piece diameter, mm

Max. cutting depth

ar

Work piece diameter, mm

Max. cutting depth

ar

Screw clamp blades

Dm

300

250

200

150

100

50

5 10 15 20 25 32

R/L123E25-25B1R/L123F25-25B1R/L123G25-25B1

R/L123H25-25B1

300

250

200

150

100

50

Dm

N123D15-21A2N123E15-21A2

5 10 15

Spring clamp blades

Shallow grooving holder for face grooving

Insert seatsize

First cutdiameter, mm

Max cuttingdepth, mm

Min Max

100 3.5 83 3.5 57 3.5

46 4.5 46 4.5

46 4.5

min.

max.

First cut diameters

123 -GM, -TF, -CM

-RM, -TM

Holder

seat

size

G E

F

G

K H

J

K

Select correct width, geometry and system for parting of

< 8 1 CM/CS CoroCut3 0.05 812 1.5 CM CoroCut 2&3 0.07

1216 2 CM CoroCut 2 0.08

1624 2.5 CR CoroCut 2 0.08

2432 3 CR CoroCut 2 0.12

3240 4 CR CoroCut 2 0.15

4048 5 4E T-Max Q-Cut 0.18

4856 6 4E T-Max Q-Cut 0.20

Componentdia, mm

Insert width,la, mm

Insertgeometry

Toolsystem

Feedstart value,mm/r

Parting of bars

< 4 1 CM/CS CoroCut3 0.05 4 6 1.5 CM CoroCut 2&3 0.07

6 8 2 CM CoroCut 2 0.08

812 2.5 CR CoroCut 2 0.08

1216 3 CR CoroCut 2 0.12

1620 4 CR CoroCut 2 0.15

2024 5 4E T-Max Q-Cut 0.18

2428 6 4E T-Max Q-Cut 0.20

Insert width,la, mm

Insertgeometry

Toolsystem

Feedstart value,mm/r

Componentwall thick-ness, mm

Parting of tubes


21/42

B 21

Turning

A

B

C

D

E

F

G

H

Parting and grooving insert geometries and grades

ApplicationLow feed Medium feed High feed Optimizing

CoroCut2

CoroCut2

CoroCut2

CoroCut2

Q-Cut151.2

Q-Cut151.2

Q-Cut151.2

Q-Cut151.2

CF 7E

CM 5E CR 4E 9E

TF 7G TM 5T 4T

RM 5P RO 4P

GF 4G GM 5G 6G

RS F-P AM 151.4AL

4U

RE E-P

GE E-G

TF CM151.37G

RM 151.37P

1) 151.34G

1) 151.37G

1) 1) 151.37P

5F

1)Internal machining with CoroCut inserts

CoroCut3

CM

CS

CSCM 5E 9E

Partingbars

tubes

Turning

Profiling

Grooving

Al profiling

Undercutting

Face grooving

Internal

GradesThe CoroCut family has different carbide

grades to cover all types of workpiece ma-

terials from the very wear resistant grade

GC3115 to the toughest grade on the mar-

ket GC2145. Cubic Boron Nitride and Dia-

mond tipped inserts are also available.

ISO P = Steel

ISOM = Stainless steel

ISO K = Cast iron

ISO N = Aluminum and non-ferrous

materialsISO S = Heat resistant super alloys

ISO H = Hardened materials

GC

2145

GC

2145

Wearresistance

Tough

ness

Conditions

Unstable

Stable

GC

2145

GC4025

GC3115

GC2135

ISO-P ISO-K

GC2135

ISO-M ISO-S ISO-H

GC3115

GC4025

CD10

H10

H13A

ISO-N

H13A

GC1005

GC2135

CB20

GC4125

GC4125

GC4125

GC4125

S05F

Geometries

CF 7E


22/42

B 22

Turning

A

B

C

D

E

F

G

H

Surface finish in axial turningWhen using geometries -TF or -TM in axial turning operations,

the wiper effect will generate much better surface finish (A)

compared to conventional tools (B). This wiper effect, genera-

ted by tilting the insert, makes it possible to increase the feed,

which results in a productivity increase.

Results from surface finish measurements from axial turning

in steel with geometries -TF and -TM are shown in the graphs

below. A

The Wiper effect with CoroCut

CoroCut -TF CoroCut -TM

Surface finish in parting and groovingThe Wiper is designed to work with radial feed (axial feed when

facegrooving). The main benefit is much better surface finish

on the component (see graph below). The CoroCut 1 -2 edge

system is a system for high pruductivity parting and grooving

operations. The CoroCut insert geometries -CF and -TF, as well

as the T-MAX Q-Cut geometries -7E and -7G, are using the Wiper

technology giving much better better surface finish in partingand single groove operations.

insert with Wiper technology

r= 0.4 mm

insert without Wiper technology

r= 0.4 mm

= Wiper effect

Cutting depth, ap: 1.5 mm

Material: Steel, CMC 01.2

Ra, m

Surface finish

-TF. Corner radius 0.4 mm.

Conventional tool.

Corner radius 0.4 mm.

Feed (fn) mm/rev

0 0.1 0.15 0.2 0.25 0.3

2.5

2

1.5

1

0.5

0

Cutting depth, ap: 1.5 mm

Material: Steel, CMC 01.2

Ra, m

Surface finish

-TM. Corner radius 0.8 mm.

Conventional tool.

Corner radius 0.8 mm.

Feed (fn) mm/rev

0 0.1 0.15 0.2 0.25 0.3

2.5

2

1.5

1

0.5

0

1.2

1.0

0.8

0.6

0.4

0.2

0.05 0.1 0.15 0.2

Ra, m

Surface finish

Feed (fn) mm/rev

B

ZvR

maxR

maxap ap

fn fn


23/42

B 23

Turning

A

B

C

D

E

F

G

H

Grade GC3115

Based on a hard substrate, MT-CVD coated with TiCN-Al2O3 layer.

A high wear resistant grade for grooving and turning applications

under stable conditions. Also effective in hard steels. High cutting

speeds.

Grade GC4025 first choice for cast iron

Based on a hard gradient sintered substrate, MT-CVD coated with

TiCN-Al2O3-TiN layer. An all-round grade for ISO-P and ISO-K with

excellent combination of high wear resistance and good edge se-

curity. To be used in grooving, turning and parting-off operations

under stable conditions. Medium to high cutting speeds.

Grade GC4125 first choice for steel

A fine grained substrate, PVD-coated with TiAlN layer. An excellent

all-round grade in all ISO-areas. First choice for parting-off tubes,

grooving and turning operations and works well in low-carbon and

other smearing materials. Low to medium cutting speeds.

Grade GC2135 first choice for stainless steel

A MT-CVD-coated grade with TiCN-Al2O3-TiN layer. A grade for

toughness demanding operations such as parting-off to centre

and interrupted cuts. Low to medium cutting speeds.

Grade GC2145

The markets toughest substrate, PVD coated with TiAlN layer.

For extremely toughness demanding operations, such as inter-

rupted cuts and parting-off to centre. Low cutting speeds.

Grade H13A first choice for non-ferrous materials

Uncoated carbide grade. Good wear resistance and toughness

combined with edge sharpness. To be used in non-ferrous and

titanium materials.

Grade H10

Uncoated carbide grade. Good edge sharpness for use in alumi-

nium alloys and Heat Resistant Super Alloys (HRSA).

Grade GC1005 first choice for HRSA

A fine grained carbide substrate, PVD coated with TiN-TiAlN layer.

A wear resistant grade combined with sharp edges. To be used

for finishing with close tolerances in HRSA and stainless steel.

Grade S05F

MT-CVD-coated TiCN-Al2O3-TiN layer with a fine grained carbide

substrate. For roughing to finishing in HRSA-materials.

Grade CD10 first choice for finishing aluminium

A polycrystalline diamond (PCD) grade. An extremely wear resis-

tant grade giving very good surface finish. To be used only for

non-ferrous materials.

Grade CB20 first choice for hardened materials

A cubic boron nitride (CBN) grade. A wear resistant grade. To

be used for machining of hardened materials, with limited feed

and depth of cut. Eliminates grinding operations.

Parting and grooving grades

2135 4125

2145 2135

4125 4025

4125 4025

2135 4125

4025 3115

4125 4025

2135 4125

4025 3115

H13A H10

H13A 1005

Security Productivity

Parting off

Bars

Tubes

Turning

4125 40254125 1005

4125 4025

H13A CD10

1005 S05F

CB20

4125 4025

4125 1005

4125 3115

H13A

4125 1005

CB20

Profiling

Grooving

H10 CD10

235 H13A

4125 4025

2135 41254025 3115

H13A

H13A 1005

CB20

Aluminium

profiling

Undercutting

Face

grooving


24/42

B 24

Turning

A

B

C

D

E

F

G

H

-CR

Parting

-CF

Feed (fn), mm/r

4.0

3.0

2.5

0.05 0.1 0.2 0.3 0.4

Feed (fn), mm/r

6.0

5.0

4.0

3.0

2.5

0.05 0.1 0.2 0.3 0.4

Feed (fn), mm/r

5.0

4.0

3.0

2.5

2.0

0.05 0.1 0.2 0.3 0.4

-CM

Insert width (la), mm

Radial feed


Radial feed


Radial feed

Rough machiningStrong cutting edges, reduce risk of edge fractures.Suitable for parting off bars and interrupted cuts.For steel and cast iron, but also suitable for stainless steels when thereis a need for strong edges.

Available as CoroCut 1- and 2-edged inserts.

Parting off stainless steelsAlso recommended for thin walled tubes and small diameter compo-nents in all materials.The positive geometry eliminates the risk of built up edges.Low cutting forces resulting in reduced vibrations.

Available as CoroCut 1- and 2-edged inserts.

Stainless steels and sticky materialsVery good chip control at low feeds.The positive geometry eliminates the risk of built up edges.Gives soft cutting action.Generates good surface finish, due to wiper design on the side.

Available as CoroCut 2-edged inserts.

High feed choice

Low feed choice

Medium feed choice

WiperWiper

Feed recommendations for parting and grooving geometries

-CM

-CS

Radial feed


First choice for shallow parting and groovingFirst choice in most materialsSharp edge line, chip breaking geometryTo be used at normal cutting speeds 100 250 m/min

Radial feed


Feed (fn), mm/r

First choice for shallow parting and grooving at low speedsFor sticky materials and ball bearing materialsExtremely sharp edge line with an open chip formerTo be used in multi-spindle machines at low cutting speeds 50 m/min

To be used for non-ferrous materials at normal cutting speeds100 250 m/minRight (R) or left (L) hand inserts to bee used for pip and burr freemachining

Radial feed


-CS

Ideal solution for minimising pips and burrs on components thanksto the sharp cutting edge and front angles of 10 and 15.

Recommended for small components.

Suitable for free cutting steel.

Feed (fn), mm/r

Feed (fn), mm/r

= high cutting speed

= low cutting speed


25/42

B 25

Turning

A

B

C

D

E

F

G

H

-GF Radial feed


Feed (fn), mm/r

Axial feed

Feed (fn), mm/r

Cutting depth (ap), mm

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35

4.0

3.0

2.0

1.0

0

8.0

6.0

4.0

3.0

2.0

la

For precision groovesGood accuracy and repeatability dueto tight tolerances on inserts.Low cutting forces and good surfacefinishing due to sharp cutting edge.Large number of different widths.Designed for side turning.

Available as CoroCut 1- and

2-edged inserts.

Low feed choice

-GM

Feed (fn), mm/r

6.0

5.0

4.0

3.02.0

0.05 0.1 0.2 0.3 0.4

Grooving


Radial feed Grooving in all materialsOutstanding chip control.Reduces chip width giving good surfaces.


Medium feed choice

Profiling

-RM

Feed (fn), mm/r


Radial feed Axial feed

Feed (fn), mm/r


Excellent for profiling in all materialsOutstanding chip control even at lowfeeds and small depths of cut.Good surface finish.

Available as CoroCut 1 and 2-edgedinserts.

Medium feed choice

-GE Alternative for finish grooving of hardened materialsMaintains close tolerances and gives excellent finish on components.


Feed (fn), mm/r

Cubic Boron Nitride

tipped


Radial feed

8.0

6.0

5.0

4.0

3.0

0 0.05 0.1 0.15 0.2

Axial feed


-RE

Cubic Boron Nitride

tipped

Alternative for finish profiling ofhardened materialsGives outstanding productivity andexceptional surface finish.

Available as CoroCut 1- edged inserts.


Radial feed

Feed (fn), mm/r

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

5

4

3

2

1

0

la

6.0

5.0

4.03.0

8.0

Feed (fn), mm/r

8.00

6.00

5.00

4.00

3.00

2.001.50

0 0.1 0.2 0.3 0.4

6.0

5.0

4.0

3.0

0.1 0.2 0.3 0.4 0.5

8.0 5

4

3

2

1

0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

la

6.0


26/42

B 26

Turning

A

B

C

D

E

F

G

H

Aluminium profiling

-AMRadial feed


Feed (fn), mm/r

Axial feed

Feed (fn), mm/r


5

4

3

2

1

0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

la

8.0

WiperWiper


27/42

B 27

Turning

A

B

C

D

E

F

G

H

Parting

-4E Radial feed First choice for parting off barsStrong geometry ideal for interrupted cuts.For parting off steel and cast iron.

-5E Radial feed First choice for parting off tubesParticularly recommended for thin walled tubes and small dia-meter components in all materials.Generates low cutting forces and hence little vibration.For parting off stainless steel.

-5F Radial feed Optimizer to minimize pips and burrs on components due tosharp cutting edge, with a wide choice of front anglesRecommended for stainless steels, ductile and work hardeningmaterials.

-7E Radial feed Alternative for good chip control at low feedsSoft cutting action.Low cutting forces.

Generates good surface finish, due to Wiper design.Very good chip control.

-9E Optimizer for ball bearing operations and long chippingmaterialsGood chip control giving a high productive and problem-freeproduction.

High feed choice

Medium feed choice

Low feed choice

Feed (fn), mm/r


8.06.0

5.0

4.0

3.0

2.5

0 0.1 0.2 0.3 0.4 0.5

Feed (fn), mm/r


5.0

4.0 3.0

2.5

2.0

0 0.1 0.2 0.3 0.4 0.5

Feed (fn), mm/r


4.03.0

2.5

0 0.1 0.2 0.3 0.4 0.5

Radial feed


Feed (fn), mm/r

4.0

3.0

2.5

0 0.1 0.2

WiperWiper

Feed (fn), mm/r


0 0.1 0.2 0.3 0.4 0.5

6.05.04.03.02.5

2.0

-TM

Feed (fn), mm/r



Feed (fn), mm/r


General turning operationsThe positive geometry eliminates therisk of built up edges.


Medium feed choice

5

4

3

2

1

0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

la

6.0


28/42

B 28

Turning

A

B

C

D

E

F

G

H

-5G

Grooving

Radial feed First choice for general purpose grooving.Outstanding chip control.Reduces chip width giving good surfaces.For grooving in all materials

-4G (N151.2) Radial feed Alternative choice for precision grooving.Good accuracy and repeatability due to tight tolerances oninsert.Low cutting forces and good chip control in a wide rangeof materials.Sharp cutting edge.

-4G (N151.3)

These inserts can only beused with holders typeF151.37 or bars type

AG151.32

Radial feed Alternative choice for internal grooving of smallest bores.

Good accuracy and repeatability due to tight tolerances oninsert.Low cutting forces and good chip control in a wide range ofmaterials.Sharp cutting edge.

-6G Radial feed Alternative choice when chip control is of prime importanceat high production rates.Particularly recommended for mass production operations, e.g.cam shaft production.

Alternative for finish grooving of hardened materials.Maintains close tolerances and gives excellent finish oncomponents.

E-G

Cubic Boron Nitride

tipped

Radial feed

Medium feed choice

Low feed choice

Low feed choice

High feed choice

Internal grooving

Feed (fn), mm/r


8.0

6.0

5.0

4.0

3.0 2.0

0 0.1 0.2 0.3 0.4 0.5

Feed (fn), mm/r


8.0

6.0

0 0.1 0.2 0.3 0.4 0.5

Feed (fn), mm/r


10.0

8.0

6.0

5.0

4.0

3.0 2.0

0 0.1 0.2 0.3 0.4 0.5

Feed (fn), mm/r


6.0

5.0

4.0

3.0

0 0.05 0.1 0.15 0.2 0.25

Feed (fn), mm/r


8.0

6.0

5.0

4.0

3.0

2.0

0 0.1 0.2 0.3 0.4 0.5


29/42

B 29

Turning

A

B

C

D

E

F

G

H

(N151.3)-7G

Face grooving

= Axial feed, approx. range, mm/r, first cut

= Axial feed, approx. range, mm/r, opening cut

These inserts can only beused with holders typeF151.37 or bars type

AG151.32

Axial feed Radial feed


Feed (fn), mm/r

0.05 0.1 0.15 0.2 0.25 0.3

6.0

5.0

4.0

3.0

Feed (fn), mm/r


5

4

3

2

1

0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

la

6.0

5.0

6.0

6.0

5.0

4.0

3.0

0 0.1 0.2 0.3

Insert width (la), mm5

4

3

2

1

0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Feed (fn), mm/r


Feed (fn), mm/r

la

8.0

6.0

5.0

4.0

3.0

8.06.0

5.0

4.0

3.0

0 0.1 0.2 0.3 0.4

WiperWiper


Feed (fn), mm/r

Feed (fn), mm/r


10.0

8.0

6.0

5.0

4.0

3.0

0 0.1 0.2 0.3 0.4

5

4

3

2

1

0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

la

10.0

8.0

6.0

5.0

4.0

3.0


30/42

B 30

Turning

A

B

C

D

E

F

G

H



-AL

F-P

These insertscan only be usedwith holders typeF151.42

Diamond tipped

Profiling

First choice for profiling in non-ferrous materials.Good chip flow giving good surfacefinish.Extra long cutting head gives excellentaccessibility.

Gives unrivalled tool life and cuttingeconomy when using diamond coatedgrade CD1810.

Alternative for finish profiling ofnon-ferrous materials.Gives outstanding productivity andexceptional surface finish.For use under stable conditions.

Radial feed Axial feedE-P

Cubic Boron

Nitride tipped

Alternative for finish profiling ofhardened materials.Gives outstanding productivity andexceptional surface finish.

(N151.4)

Feed (fn), mm/r


5

4

3

2

1

0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

la

6.0

5.0

4.0


Feed (fn), mm/r

6.0

5.0

4.0

0 0.1 0.2 0.3 0.4

Feed (fn), mm/r


5

4

3

2

1

0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

5.0

4.0

la

3.0

6.0


Feed (fn), mm/r

6.0

5.0

4.03.0

0 0.05 0.1 0.15 0.2

Feed (fn), mm/r


5

4

3

2

1

0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

la

8.0

6.0


Feed (fn), mm/r

8.0

6.0

0 0.1 0.2 0.3 0.4

Circlip grooving

R-/L154.0G

Feed (fn), mm/r

4.15

3.15

2.15

1.10

0 0.1 0.2 0.3


Radial feed Alternative for good economy when groovingcirclips.High productivity and reliability through low cuttingforces and little vibration.Three cutting edges give good economy.Recommended for use in all materials.


31/42

B 31

Turning

A

B

C

D

E

F

G

H

Turning

-5T

-4T



Feed (fn), mm/r


5

4

3

2

1

0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

la

6.0

5.04.0

3.0


32/42

B 32

Turning

A

B

C

D

E

F

G

H

ISO CMC

No

Material Hard-nessBrinell

Spe-cificcuttingforce k

c

0.4

P

M

N/mm2 HB

2000 1252100 1502180 170

2100 1802775 2752775 350

2500 2003750 325

1800 1802100 2002500 2253600 250

STEEL

Unalloyed01.101.201.3

02.102.202.2

03.1103.21

06.106.206.306.33

Low-alloy 5%

High-alloy >5%

Castings

C = 0.1 0.25%C = 0.25 0.55%C = 0.55 0.80%

Non-hardenedHardened and temperedHardened and tempered

UnalloyedLow-alloy (alloying elements 5 %)High-alloy, alloying elements >5%)Manganese steel, 1214% Mn

AnnealedHardened tool steel

05.1005.1105.1205.13

Bars/for

ged

Ferritic/martensitic

Free machining steelNon-hardenedPH-hardenedHardened

05.2005.2105.2205.23

Austenitic Free machining steelAusteniticPH-hardenedSuper austenitic

05.5105.52

Austenitic-ferritic(Duplex)

Non-weldableWeldable

0.05%C


33/42

B 33

Turning

A

B

C

D

E

F

G

H

Feed fn, mm/r

Cutting speed vc, m/min

Feed fn, mm/r


Feed fn, mm/r


H13A

120 9090 7060 4070 50

0.05- 0.5

120 80100 6549 3365 44

75 60

50 38

70 4743 29

GC4025

325 175300 135280 120

0.05- 0.5

270 125260 95210 75

250 105185 70

160 65180 80100 7580 42

GC4125

175 75165 75130 60140 65

0.05- 0.5

205 85185 90130 60140 65

155 75130 60

150 70

125 55

160 80105 55

135 65110 55

H13A

0.05- 0.5

100 8570 55

80 6580 60

70 5560 44

GC4125

255 125230 100205 90

0.05- 0.5

205 95175 80140 65

180 80130 55

120 60140 75105 4560 35

GC2135

155 65145 65110 46120 50

0.05- 0.5

170 75165 70105 49115 55

135 60110 50

130 60

110 46

135 6090 44

115 5595 45

GC4025

0.05- 0.5

300 160220 100

260 125225 110

240 105190 90

GC2135

205 100180 75175 70

0.05- 0.5

175 80155 70125 55

155 70105 43

105 50120 6090 4050 29

GC235

170 130130 100

90 70100 75

0.05- 0.5

150 110125 95

75 5585 65

125 9595 70

110 85

70 55

105 8065 49

110 8585 60

GC4125

0.05- 0.5

220 110150 85

180 95150 80

160 85130 65

GC235

165 130150 120140 105

0.05- 0.5

140 110120 85

95 70

70 6045 33

100 7090 5580 47

100 80

GC2145

140 55130 50100 40110 45

0.05- 0.5

160 70140 5595 44

105 49

125 50100 45

120 47

100 40

125 5080 38

105 4780 39

GC2145

175 90160 65150 60

0.05- 0.5

155 75140 60115 49

140 6595 37

95 45110 5580 35


34/42

B 34

Turning

A

B

C

D

E

F

G

H

N

ISO CMCNo


Specificcuttingforce k

c

0.4

CD10

Feed fn, mm/r

Cutting speed vc, m/minN/mm

2 HB

The recommendations are valid for use with cutting fluid.

5400 60 HRC2750 400

04.110.1

Hardened and temperedCast or cast and aged

500 60

800 100

30.11

30.12

Aluminium alloys Wrought or wrought and coldworked, non ageing

Wrought or wrought and aged

750 75900 90

30.2130.22

Aluminium alloys Cast, non ageingCast or cast and aged

700 110700 90

1750 100

33.133.2

33.3

Copper andcopper alloys

Free cutting alloys, 1% PbBrass, leaded bronzes, 1% Pb

Bronze and non-leadad copper incl. electrolyticcopper

20.1120.12

Iron base Annealed or solution treatedAged or solution treated and aged

Nickel base20.2120.22

20.24

Annealed or solution treatedAged or solution treated and aged

Cast or cast and aged

20.31

20.32

20.33

Cobalt base Annealed or solution treated

Solution treated and aged

Cast or cast and agedHeatresista

nt

superalloy

s

Titanium

Titanium Commercialpure1)

(99.5% Ti)23.1

23.2123.22

, near and +alloys, annealed +alloysin aged cond, alloys, annealed or aged

Titanium alloys1)

Rm2)

3000 2003100 280

3320 2503600 350

3700 320

3300 200

3750 300

3800 320

1530 400

1675 9501690 1050

S

H

1) Positive cutting geometry and coolant should be used.2) Rm = ultimate tensile strength measured in MPa.

ISO CMCNo



c

0.4

ISO CMCNo



c

0.4

N/mm2 HB

N/mm2 HB

Feed fn, mm/r


Feed fn, mm/r


Hardenedmaterial

Non-ferrous

material

0.05- 0.5

2000 465

2000 465

2000 4652000 465

800 325795 325

400 185

H10

0.05- 0.3

190 160

80 6570 55

CB20

0.05- 0.1

130 125200 195

Note! For internal grooving, facegroving and undercutting the speed shouuld be reduced by 30-40 %.

CD1810

0.05- 0.5

2500 150

2500 150

2500 1502500 150

800 150800 150

400 150

GC1005

0.05- 0.3

180 120150 100

90 55 80 50

70 46

90 60

80 50

70 46

CC670

0.05- 0.1

110 100110 100

H10

0.05- 0.5

2400 715

805 275

825 275510 200

S05F

0.05- 0.3

200 130 165 110

100 60 90 55

80 50

100 65

90 55

80 50

Extra hard steelChilled


35/42

B 35

Turning

A

B

C

D

E

F

G

H

H13A

0.05- 0.5

995 585

420 235

995 585650 360

300 175200 115

150 90

H13A

0.05- 0.3

50 37 40 26

30 23 20 13

20 13

35 2723 1520 13

175 145

70 6065 55

GC4125

0.05- 0.3

70 38 50 29

45 28 40 22

30 16

50 3340 2230 16

200 95

70 3865 33

GC2135

0.05- 0.3

50 29 40 26

40 2635 21

25 10

45 2835 1725 14

GC235

0.05- 0.3

50 37 40 26

30 2320 13

20 13

35 2723 1520 13

GC2145

0.05- 0.3

40 30 30 20

25 2015 10

15 10

30 2020 1015 10

CC670

0.05- 0.1

600 500500 400

250 200

410 340350 300320 250

Feed fn, mm/r


Feed fn, mm/r


Feed fn, mm/r



36/42

B 36

Turning

A

B

C

D

E

F

G

H

Application hints for parting and grooving

GeneralInsert clamping in toolholderThe CoroCut family has two different in-

sert clamping systems.

CoroCut in insert seat size D-G and all

Q-Cut insert seat sizes have a V-shaped

design giving a very secure clamping for

parting and grooving applications. (1)

CoroCut in insert seat size H-L has a

unique rail-design giving stability to the

insert clamping. This is primarily need-

ed in operations generating side forces

such as turning and profiling. (2)

The recommended torque values for the

clamping screws are shown in tool tables

and should be used without overtighten-

ing. (The maximum torque is about 50%

higher than the table values.)

Mounting the insert: in CoroCut spring

clamp blade key

1. Mount the excentric key in the corre-

sponding recess of the blade slot.

2. Open the tip seat (lift the key) as you

push the insert into the pocket.

Removing the insert:

1. Mount the excentric key in the corre-

sponding recess of the blade slot.

2. Open the tip seat (lift the key) as you

pull the insert from the pocket.

Q-Cut spring clampAlways apply a little cutting fluid or oil on

the insert seat before mounting to fur-

ther increase the holder life.

Use the special Q-Cut key for inserting

and extracting the insert in order to aviod

edge fractures.

No pivot holes are provided in either the

570 type exchangeable cutting heads

(R/LAG 551.31) or the smaller MBS bla-

des for parting or face grooving. For the-

se items a small rubber hammer should

be used to tap the insert into its finalposition. The tip of the yellow key should

be used to extract the insert.

Toolholder selectionTo minimize the risk of vibration tenden-

cies and tool deflection, always choose :

- a blade or toolholder with the smallest

tool overhang

- maximum toolholder shank dimension

- blade height (h) equal to or larger than

the blade insertion length

- blade or holder with maximum blade

width (largest possible insert seat size)

- use a CoroCut toolholder with short ar

(for Q-Cut holder type 22) if possible to

ensure good stability and straight cuts.

The reinforced holder will increase stabil-

ity further.

Mounting the toolholderMake sure the toolholder is mounted at

90 degrees to the centre-line of the work-

piece so as to obtain perpendiculasr sur-

faces in the cut and reduce the risk of

vibration tendencies.

Make sure the toolholder is mounted with-

in plus/minus 0.1 mm especially when

parting of bars and grooving components

having small diameters. This affects cut-ting forces and the pip formation.

Cutting fluidA copious supply of cutting fluid, directed

exactly at the cutting edge, should be

used while the insert is engaged and

throughout the operation.

For tool blocks a coolant adapter can be

mounted and the coolant supply connected

from above or from either side. The adapter

can be ordered as an optional extra and is

supplied with an assembly screw.

Parting offOptimize tool-life .. by reducing the feed rate by up to

75% about 2 mm before the component

is parted off.

Select width, geometry and toolsystem for parting off (B20)

2 1


37/42

B 37

Turning

A

B

C

D

E

F

G

H

Pips and burr minimization .. Can be achieved by using ground

right or left-handed inserts (for example

geometry G For GS) with the smallest

possible front angle that gives an accep-

table component.

Tools for large depths ofpenetrationUse double ended blades for best insert

seat economy and accessibility at large

depths of penetration.

Note that when machining a large diam-

eter workpiece or using a holder/blade

with large overhang reduce feed and cut-

ting speed when parting to the centre, in

order to minimize pip and load on the

cutting edge.

GroovingFinish grooving .. can be improved by the use Wiper

technology to achieve good surface finish

in grooves and parting (geometries CF

and TF as well as 7E and 7G)

Chamfered grooves .. can be produced with a standard GF

insert which machines the groove and

chamfers. This can be optimized with a

Tailor Made insert incorporating cutting

edges for producing chamfers specifical-

ly for reducing cycle times in large vol-

ume production.

Internal grooving .. should have the shortest possible tool

overhang and the lightest cutting geometry

(GF or TF). Make several insertions with a

narrower insert followed by a finishing cut

or a single insertion followed by plunge

turning. Start at the bottom of the hole

and work outwards and use RH or LH in-

serts to direct chips when roughing. Use

large amounts of cutting fluid. Consider

EasyFix sleeeves to optimize set-up and

achieve good bar clamping.

Tool rubbing in facegrooving .. make sure that the tool is right for

the diameter range, parallel to the axis

of rotation and correct in relation to the

centre-line may need lowering or rais-

ing depending upon where rubbing takes

place (inner or outer).

See Face grooving.

For shallow grooving .. it is very important that a zero degree

angle of inclination is used. For small

bores when using toolholders without

shims grooving a bar type 154.0 must

be used. The RH insert can be used for

RH external and LH internal toolholders.

The LH inserts for LH external and RHinternal toolholders.

TurningFinishing wider grooves ...... with an axial turning operation with geo-

metries TF or TM will provide the Wiper ef-

fect for achieving good surface finish com-

pared to conventional turning tools.

Compensation when axialturningDuring axial turning or copying the tool is

subjected to a small deflection, caused

by axial cutting forces. This results in a

difference (Dc/2) in diameter during

the transition between radial and axial

feed. In order to compensate for this, the

difference in diameter should be meas-

ured and the tool drawn back so that the

correct diameter is obtained.

WiperWiper

0


38/42

B 38

Turning

A

B

C

D

E

F

G

H

It is important to detect if the grade is too wear resistant

(hard) or too tough (soft), by inspecting the edge line behav -

iour. Edge line having early plastic deformation (PD) indicates

the grade is too tough and a more wear resistant grade

should be used. Edge line having early chipping (small car -

bide pieces broken out of edge line) indicates that the grade

is too wear resistant and a tougher grade should be used.

Plastic deformation. Chipping.

Cause

? Cutting edge

temperature too low.

? Unsuitable geometry

or grade.

Solution

? Increase cutting speed

and/or feed.

? Choo se a geometry

with a sharper edge .

Preferably a PVD

coated grade.

Built-up edge (BUE)

When parting to centre and in stainless material its almost

impossible to avoid BUE. Its important to minimise this

phenomenon by using the solutions above.

Cause

? Excessive temperature

in cutting zone.

? Unsuitable grade.

? Lack of coolant supply.

Solution

? Reduce cutting speed

and/or feed.

? Choose more wear

resistant grade.

? Improve coolant supply.

Plastic deformation (PD)

Cause

? Cutting speed too high .

? Too soft grade.

? Lack of coolant

supply.

Solution

? Decrease cutting

speed .

? Choose more wear

resistant grade .


Excessive flank wear

Cause

? Too hard grade .

? Too weak geometry .

? Unstable conditions .

? Too high cutting data .

Solution

? Choose a softer grade .

? Choose a geometry for

higher feed area .

? Reduce overhang . Check

centre height.? Re duce cutting data.

Chipping/breakage

Cause

? Oxidation at the cutting

depth.

? Too high edge

temperature .

Solution

? Use varying cutting

depths.

? Re duce cutting speed .

? Improve coolant flow.

Notch wear

Cause

? Cutting speed too high .

? Too soft grade.

? F eed too high .

? Lack of coolant supply.

Solution

? Decrease cutting

speed .

? Choose more wear

resistant grade .

? Decrease feed .


Crater wear

Finish TurningCare should be taken when machining

around the bottom radius of the groove.

Follow the previously recommended ma -

chining sequence.

Rough turningTo achieve a flat bottom and high-quality

groove-sides, follow the previously rec -

ommended machining sequence.

Tool wear indicators


39/42

B 39

Turning

A

B

C

D

E

F

G

H

CoroCut inserts Geometries FB, RO, GF, GE

Shapeoptions

Shapeoptions

OptionsInsert seat

size

No of edges

Insert grade

ER

Geometry = FB, RO, GF, GE and insert seat

size = D,E, F, G, H, J, K, L

2 (1 for GE)

FB = GC4025, GC4125, H10F, H13A

RO = GC2135, GC4125, H10F, H13A, 1005, S05F

GF = GC2135, GC4125, GC1005, H13A, S05FGE = CB20, CB50

ER-treatmentS=small, L=Large or R=Recommended

A1, A2, A3

R1, R2, R3, R4

D1, D2, D3, D4

V1, V2, V3, V4

S3, S4, S5

Tolerance

Insert width1.98.0 mm

Insert radius R1/R2/R3/R4

lengthD1/D2/D3/D4

angleV1/V2/V3/V4

Clearance angleS3/S4/S5

A1Tolerance 0.02 mm

123-FB2 Edge

123-RO2 Edge

Shapeoptions

1 2 3 4 5

6 7 8 9 10

1211 16 17

Insert seat size

Insert width

123-GE G H J K L

123-FB E F G H J K L

123-RO E F - H J K L

123-GF E F G H J K L

123-FB 1.9-2.3 2.3-3.4 2.6-3.8 3.5-4.8 4.5-5.8 5.5-6.8 6.5-8.0

123-RO 1.9-2.4 2.8-3.2 - 3.8-4.0 5.5-6.35 6.4-7.4 7.4-8.0

4.5-5.0

123-GF 1.9-2.3 2.3-2.8 2.8-3.6 3.6-5.0 5.0-5.6 5.6-7.2 7.2-8.0

123-GE 3.0-3.4 4.0-5.0 4.5-6.35 5.6-6.35 6.5-8.0

Blankforsha

pe

option8.

123-GF2 Edge

Grooves are often designed in many different shapes and dimensions depending on its working area. With Tailor Made tools

you can increase the productivity and make it possible to generate grooves not possible to produce with standard tools. We

tailor inserts and toolholders to suit your specific component requirements.

Inserts

For inserts choose suitable shape option (see below) plus actual dimensions according to Turning tools catalogue. Contact

your Sandvik Coromant representative and we will give a quick quotation, competitive price and delivery.

123-GE1 Edge

For more GF-limits see table further on.


40/42

B 40

Turning

A

B

C

D

E

F

G

H

1716

151.2-6G

12

8

4 5

6

8*

4*

5* 6 7

321*

151.2-4G

7

32

10 119

1

151.2-3G

1

Quick quotation

Easy to order

Competitive delivery

T-Max Q-Cut inserts Geometries 3G, 4G and 6G

Alternative when shapes required lie outside Tailor Made range of -4G.

Shapeoptions

Shapeoptions

Shapeoptions

For applications requiring optimal chip control in width

range 610 mm.

Shape

options

OptionsInsert seat 20. 25, 30, 40, 50, 60

size

Insert 3GGC4125, GC225, GC235, H13A, H10F, GC1020, GC1025

grade 4GGC4125, GC225, GC235, S10, S30, SM30, GC415

CT525, H10A, H13A, H10F, GC1020

6GGC4025, GC235

ER ER-treatmentS=small,L=Large orR=Recommended

Recommended first choice geometry for grooving. *Options 1, 4, 5 and 8 also suitable for T-Max Q-cutter.

The face of options 4 and 5 must be symmetrical for T-Max Q-cutter.

Shapeoptions

Shapeoptions

Note! For specific details regarding the options,

contact your Coromant sales representative.

A1, A2, A3 Insert width1.9-11.0 mm

R1, R2, R3, R4 Insert radius R1/R2/R3/R4

Insert radiusR1/R26G=0.2-2.0 mm

D1, D2, D3, D4 lengthD1/D2/D3/D4

V1, V2, V3, V4 angleV1/V2/V3/V4

Negative land T-Max Q-Cutter10

Tolerance A1Tolerance 0.02 mm


41/42

B 41

Turning

A

B

C

D

E

F

G

H

Face grooving

Shank holders Tool design

R

A

Copy angle

B

Blade type

Holder style

90

F

G

Reinforced blade

face grooving

Reinforced blade

parting

Turning Profiling

Clamping system

Screw

Spring

N

L

Coromant Capto

Radial groovingParting

CoroCut and T-MAX Q-Cut for parting and grooving Machininglimitations

Operation type

Standard inserts

Parting

Turning

Grooving

Profiling

Type

123

123

123

123

123

Geometries

CF, CM, CR

TF, TM

GM

RM

Insert sizes

E, F, G, H, J, K

G, H, J, K, L

E, G, H, J, K, L

F, G, H, J, L

Type

N151.2

N151.2

N151.2

N151.3

N151.2

Geometries

4E, 5E, 5F, 4U

4T, 5T, 4U

5E, 4G, 5G, 6G, 4U

7G

4P, 5P, 4U

20, 25, 30, 40, 50, 60, 80

30, 40, 50, 60, 80

20, 25, 30, 40, 50, 60, 80

20, 25, 30, 40, 50

30, 40, 50, 60, 80

Valid for all operation types

123 FB, RO, GF E, G, H, J, K, L N151.2

N151.2

3G, 4G

6G

20, 25, 30, 40, 50, 60, 80

60, 80

Insert sizes

For toolholders, choose the type of operation and holder according to the Turning tools catalogue. Contact your

Sandvik Coromant representative and we will give a quick quotation and competitive price and delivery.

8/10/2019 B - Parting

Documents

B - Parting and Grooving