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CNC Latheis especially useful in contour turning

operations and precise machining.

to adjust the CNC lathe for a different part

to be machined requires a simple change

in the computer program and, in some

cases, a new set of cutting tool.

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Operations using CNC LathePlain Turning

Transversal Turning

Boring

Reaming

Tapering

 Angular

Profile

Drilling

Tapping

Threading

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PROBLEM  PROBABLE CAUSE

Tool breakage Tool material lacks toughness, improper tool angles,

machine tool lacks stiffness, machining parameters

too high.

Excessive tool wear Machining parameters too high, improper toolmaterial, ineffective cutting fluid, improper tool angles.

Rough surface finish Built-up edge on tool, feed too high, tool too sharp,

vibration and chatter.

Dimensional variability Lack of stiffness of machine tool and work holdingdevices, excessive temperature rise, tool wear

Tool chatter

Lack of stiffness

Tool chatter Lack of stiffness of machine tool and work holding

devices, machining parameters are not set properly.

General Troubleshooting Guide for

Turning Operations

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Parts of a CNC Lathe Machine

Chuck

Tool Rest

Tail Stock

Aux. Operation Panel

Chip Pan

Foot Switch

Tool Eye

Lubrication Unit

Chuck Pressure Gauge

Spindle

Operation Panel

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Parts of a CNC Lathe Machine

Main power circuit breaker

Electric control cabinet

Hydraulic Unit

Coolant pump

Air unit

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Type of Programming 

Mazatrol Programming

 A type of program unique to Mazak machines that

uses conversational programming instead of G

codes.

Mazatrol programs can be written quickly and

easily.

Fundamentals of Programming

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Fundamentals of Programming

Control Axes

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Structure of a Program

Fundamentals of Programming

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a program code used to signal an action from a

miscellaneous group of commands. M codes

change cutting tools, turn on or turn off the coolant,spindle, or workpiece clamps.

M - Codes

Fundamentals of Programming

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M - Codes

Fundamentals of Programming

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Z-offset

is the difference between the referenceworkpiece zero point and the program zero

location on the face of the part. 

Tool Compensation

Fundamentals of Programming

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Z-offset

1.Touch the tool tip into the face of the work piece

2.Press screen selector key

3.Press SET-UP INFO

4.Press Work No. then input Work No. to be run

Tool Compensation

Fundamentals of Programming

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5. Press TEACH

6. Key in the value of the WORKFACE  thenpress INPUT (cursor-chuck_valid;jaw_1)

7. To check, return to POSITION. The value ofZ axis must be the same with theWORKFACE.

8. Check the maximum machining length bymoving Turret.(Z-130mm;X-100mm)

Tool Compensation

Fundamentals of Programming