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LH Series
LH 45 / 55 In tegral Spindle Motor
Coolant Through Spindle
In tegral Torque motor rotar y table
Nodular spheroidal graphi te cast i ron for opt imum rigidi ty & s t i f fness.
Machine s t ructures are analysed using FEM package to ensure opt imum per formance of the machine.
BED & COLUMN
cast i ron for opt imum rigidi ty &
Machine s t ructures are analysed using FEM package to ensure
3 LM Guides – Max. Rigidity
Split
End
Col
umns
3
MILLING
High speed & high torque integral motor spindle wi th maximum speed of 15000 rpm.
Ful l power is avai lable in a wide range from 800-1000 rpm
FEED DRIVES
The rol ler guide ways are less e last ic deformation against heavy loads & have superior vibrat ion damping character is t ics.
Ful ly protected bal lscrews to avoid entr y of chips
Axes feed drives are precis ion bal l screw driven wi th direct ly mounted feed motor
Feedback for axis posi t ioning is through absolute encoder
High-pressure coolant through spindle is provide as s tandard for ef fect ive machining of components wi th maximum tool l i fe & thermal s tabi l i ty of the work piece.
>2µ
Spindle Run out
Load
Up to 50 bar
INTEGRAL SPINDLE
45°
45°
End Seal
End Cap
Carriage
Rail
Bottom SealRoller
Inner Seal
Roller LM Guides
Temperature stabilized water cooled Spindle
4
ROTARY TABLE
Compact rotar y table wi th In tegral high Torque motor up to 878 Nm
Pal le t on table is posi t ioned & clamped by accurate hydraul ic cone clamping sys tem.
The cone clamping sys tem discharges s t rong jets of air during pal le t changing to avoid chip accumulat ion in cone.
High accuracy Axial & radial rol ler bearing is used for precis ion posi t ioning & r igidi ty
Table is c lamped by disc spring & declamping is done by hydraul ics.
Zero backlash is achieved by integral torque motor.
AUTOMATIC PALLET CHANGER
The machine is equipped with rotar y shut t le type APC which is highly re l iable.
Pal le t changer is operated through Electro propor t ional direct ional control valve for pal le t l i f t ing and lowering to ensure smooth and noise f ree operat ion.
Component set up s tat ion is easi ly accessible wi th c lear view through closed safety door
LH Series
Minimum Cont. Rotary Table Increment (Angle) = 0.001°
Dire
ct D
rive
Roto
r Rotor wi th permanent magnets
5
AUTOMATIC TOOL CHANGER
The machine is designed with Chain type tool magazine for fas t and rel iable tool changing mechanism.
ATC shut ter is provided as s tandard to prevent the chip enter ing the magazine.
The tools are selected by Fixed Address Method which fol lows the shor tes t path.
Coolant through spindle is provided for ef fect ive machining of the component & opt imum tool l i fe.
Coolant around spindle is provided as s tandard.
Optional Scrapper type chip conveyor wi th drum f i l t rat ion/paper band cum magnet ic coolant f i l t rat ion sys tem with oi l skimmer provided.
Upto 50 bar
IN-LINE HYDRAULICS
In - l ine hydraul ic rotar y union opt ion is provided in machining area for f ix ture c lamping.
Thus the union rotates at par wi th Pal le t , making easy f ix ture rout ing on both pal le ts.
MILLING
Tool to Tool : 2 secChip to Chip : 4 sec
Std : 40 ToolsOpt : 60 Tools
HSK
A63
COOLANT MANAGEMENT
6
LH Series
SPEED POWER CURVE
MOVING RANGE
Description
LH 45 LH 55
With fi xture blocks With fi xture blocks
P1 1530
P2 700
A 415
B 415
C 600
D 600
E 300 350
F 300 350
G 600 700
H 900
I 700
J 450 525
K 600
L 715
M 730
N 630
J
H (M
ax. w
ork
piec
e he
ight
)
K (Z-axis stroke)L
I (Max. work piece Dia)
MN
(Y-a
xis
stro
ke)
Interference Zone
A B C (Z-axis stroke)
D (Pallet Change position)
P 1 (A
PC S
wing
)
P 2 (P
allet
Swing) F
E G (X
-axi
s st
roke
)
Dual Winding Motor
7
MILLING
SPECIFICATIONS MATERIAL REMOVAL RATE
Title Description Unit LH 45 LH 55
Capacity
X axis mm 600 700
Y axis mm 630
Z axis mm 600
Spindle center to pallet top mm 100 – 730
Spindle nose to pallet center mm 115 – 715
Max. Work piece length mm 700
Max. Work piece diameter mm 900
Pallet
Pallet size mm 450 x 450 525 x 525
No. of Pallets nos. 2
Pallet change type Rotary
Minimum indexing angle deg 0.001
Pallet change time sec. 8
Minimum load on pallet kgs 500
Spindle
Spindle bore taper type HSK A63
Spindle speed rpm 15000
Spindle motor power(Cont./30min) kW 16.7 / 11.7
FeedCutting feed rate m/min. 20
Rapid traverse rate – X, Y & Z m/min. 40
Automatic Tool
Changer
No. of tools in ATC nos. 40
Tool shank confi guration type HSK A63
Max. tool diameter mm 95
Max. tool length mm 350
Max. tool weight kgs 8
Tool change time (tool to tool) sec. 2
CNC System Controller – SIEMENS
Machine sizeFront x Side mm 5610 x 3385
Weight kgs 12000
FACE MILL ING
END MILL ING
DRILL ING
Description Unit LH 45/55Work Piece
Material - S45C
Tool - Dia 80 Face mill cutter
Spindle Speed rpm 900Feed mm/min 1500
Cutting Depth / Width mm 3 / 80
Chip Volume cc/min 360
Description Unit LH 45/55Work Piece
Material - S45C
Tool - Dia 32 Hss End mill
Spindle Speed rpm 200Feed mm/min 60
Cutting Depth / Width mm 25 / 32
Chip Volume cc/min 48
Description Unit LH 45/55Work Piece
Material - S45C
Tool - Dia 50 Hss Drill
Spindle Speed rpm 190Feed mm/min 29
Cutting Depth mm 50
TAPPING Description Unit LH 45/55Work Piece
Material - S45C
Tool - M24 X 3 Hss Tap
Spindle Speed rpm 200Feed mm/min 600
Cutting Depth mm 25
INSTALLATION DIAGRAM
Front View Top View Side View
8
CAT/
LH S
eries
/010
6201
4No
te: S
pecifi
catio
ns an
d colo
urs ar
e sub
ject t
o cha
nge w
ithou
t prio
r noti
ce. A
ccesso
ries s
hown
may
not b
e part
of st
anda
rd eq
uipme
nt.
LAKSHMI MACHINE WORKS LIMITEDMACHINE TOOL DIVISION
Arasur, Coimbatore - 641 407, India.
Phone : +91 422 3021300, 3021393 | Fax : +91 422 3021331, 3021399
E-mail : [email protected] | [email protected]
www.lmwcnc.comCIN-L29269TZ1962PLC000463