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Contains everything from CNC Basics to machine operation to programming to CAD/CAM to solid models and Mazatrol conversational programming. Presented from the book:
Programming of CNC Machines
(STEPS TO CREATE A MAZATROL TURNING PROGRAM)

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   by Kenneth W. Evans
Published By:
Industrial Press Inc.

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Note: All Cutting Condition Parameters are based from Carbon Steel (e.g. Plain Carbon Steel 1018) and all other materials are a percentage factor of this. You may develop new materials specific to your application with this criteria in mind. See the section in your Mazak User Manual provided with the machine for details on assigning Cutting Condition Parameters.

 

MAXIMUM OUTSIDE DIAMETER <MENU>? ( )

Input 2.5 inches

MIN INSIDE DIAMETER <MENU>? ( )

Input 0

WORKPIECE LENGTH? ( )

Input 5.0 inches

This amount allows for 2 inches of the material to be clamped, in the chuck.

MAX SPINDLE RPM LIMIT (rpm)? ( )

Input 3000

FINISH ALLOWANCE X? ( )

Input .01

FINISH ALLLOWANCE Z? ( )

Input .005

STOCK REMOVAL OF WORKFACE? ( )

Input .1

MODE MENU?

From the Menu keys, notice the arrow keys at the left end (F9). When pressed, a next menu screen is displayed.

Choose M-Code (F5)

Input 08 for Flood Coolant (F6)

Use cursor down key to start a new machining process

MODE MENU? ( )

Choose EDGE

SECTION TO BE MACHINED ? <MENU>

Choose FCE from the Menu keys

ROUGHING PERIPHERIAL SPEED? ( )

Press AUTO SET (F1)

FINISH PERIPHERIAL SPEED? ( )

Press AUTO SET (F1)

ROUGHING FEEDRATE? ( )

Input .016

ROUGHING DEPTH OF CUT PER PASS ( )

Input .08

ROUGHING TOOL TYPE? ( )

 

Choose from tools that are identified in the tool file and the turret (at the machine). In our case,  we will use tool number 2 for roughing and tool number 4 for finishing, these have been predefined in the software.

Input 2 for rough turning tool

Input tool 4 for the finish turning tool

STARTING POINT X? ( )

Input 2.5

STARTING POINT Z? ( )

Input .1

FINIAL POINT X ? ( )

Input 0

FINAL POINT Z? ( )

Input 0

SURFACE ROUGHNESS or FINISHING FEEDRATE? <MENU>( )

Select Roughness (F1) and then choose 6 (F6)

Once this data is entered a new process begins.

MODE MENU? ( )

Choose BAR from the Menu keys (F1)

Choose BAR OUT from the Menu keys (F1)

CUTTING PATTERN MENU? ( )

Chose #1 for the cut style (F2)

 

The difference between #0 and #1 is the way the tool moves at the end of the cut sequence. For BAR OUT 1, the tool feeds up the back wall, out to the O.D., at the end of the cut on every pass; whereas, on BAR OUT 2, the tool rapids away from the cut at 45º to a clearance point set by parameter and then consecutive passes are completed and the back wall is finished on the last pass only.

CUTTING POINT X ? ( )

Input 2.5

CUTTING POINT Z? ( )

Input 0

SURFACE SPEED FOR ROUGH CUT? ( )

Select AUTO SET from the Menu keys (F1)

FINISHING PERIPHERIAL SPEED?

Select AUTO SET from the Menu keys (F1)

ROUGHING FEEDRATE?

Input .016

ROUGHING DEPTH OF CUT PER PASS?

• Input .080

ROUGHING TOOL TYPE?

• Input 2, for the rough turning tool

FINISHING TOOL TYPE?

• Input 4, for the finish turning tool

SHAPE PATTERN?

• Choose LIN (F1)

CHAMFERING (C) vs. ROUNDING R AT START POINT

• Input .05 to create the .05 x 45º chamfer (C)

Note: if a Radius is required you must press the CORNER R Menu key (F1), prior to

entry of the amount.

X END POINT?

• Input 1.0 to create the 1.0 diameter

Z END POINT?

• Input 1.0 to create the length of the 1.0 diameter

CHAMFERING vs. ROUNDING AT END POINT?

• Press Input to omit this setting

RADIUS OF ARC OR TAPER ANGLE?

• Press Input to omit this setting

FINISHING FEEDRATE FOR SURFACE ROUGHNESS?

• Input 6 (F6)

SHAPE PATTERN?

• Choose LIN (F1)

CHAMFERING (C) vs. ROUNDING R AT START POINT?

• Press CORNER R (F1)

• Input .1 to create the .1 radius (R)

X END POINT?

• Input 1.5 to create the 1.5 diameter

Z END POINT?

• Input 2.0 to create the length of the1.5 diameter

CHAMFERING vs. ROUNDING AT END POINT?

• Press CORNER R (F1)

• Input .1 to create the .1 radius (R)

RADIUS OF ARC OR TAPER ANGLE?

• Press Input to omit this setting

FINISHING FEEDRATE FOR SURFACE ROUGHNESS?

• Input 6 (F6)

SHAPE PATTERN?

• Choose LIN (F1)

CHAMFERING (C) vs. ROUNDING R AT START POINT

• Input .25 to create the .25 x 45º chamfer (C)

X END POINT?

• Input 2.5 to create the 2.5 diameter

Z END POINT?

• Input 3.0 to create the length of the 2.5 diameter

CHAMFERING vs. ROUNDING AT END POINT?

• Press Input to omit this setting

RADIUS OF ARC OR TAPER ANGLE?

• Press Input to omit this setting

FINISHING FEEDRATE FOR SURFACE ROUGHNESS?

• Input 6 (F6)

Select SHAPE END from the Menu keys (F9)

A new Process Number is started. Select the Machining Unit type next.

• Select GRV for Groove from the Menu keys (F6)

SECTION TO BE MACHINED?

• Choose OUT (F1)

MACHINING PATTERN?

• Choose type #1 (F2)

NUMBER OF GROOVES?

• Input 1

SPACING AMOUNT OF MULTIPLE GROOVES?

• Press Input to omit this setting

GROOVE WIDTH?

• Input .156 for the groove width

FINISH REMOVAL ALLOWANCE?

• Input .01 for the groove finish allowance

ROUGHING PERIPHERIAL SPEED?

• Press the AUTO SET Menu key (F1)

FINISHING PERIPHERIAL SPEED?

• Press the AUTO SET Menu key (F1)

ROUGHING FEEDRATE?

• Input .010

ROUGHING DEPTH OF CUT PER PASS?

• Input .04

ROUGHING TOOL TYPE?

• Input 8 for the rough grooving tool

FINISHING TOOL TYPE?

• Input 8 for the finish grooving tool

CHAMFERING (C) vs. ROUNDING R AT START POINT?

• Input .04 for chamfering at the start of the groove

X START POINT?

• Input 1.0

Z START POINT?

• Input .75

X END POINT?

• Input .9

Z END POINT?

• Input .75

CHAMFERING vs. ROUNDING AT END POINT?

• Press Input to omit this setting

FINISHING FEEDRATE FOR SURFACE ROUGHNESS?

• Input 6 (F6)

A new Process Number is started. Select the next Machining Unit type.

• Select THR for Threading from the Menu keys (F6)

SECTION TO BE MACHINED?

• Choose OUT (F1)

MACHINING PATTERN?

• Choose #0 STANDARD (F1)

CHAMFER ANGLE <0: NO CHAMFER, 1:45 DEGREES, 2:60 DEGREES>?

• Choose #0 for no chamfer

THREADING LEAD?

• Input .125 for the thread lead

This amount is determined by dividing one by the number of threads per inch. In

this case, 1/8 = .125.

THREADING ANGLE?

• Input 59 for the threading angle

NUMBER OF THREADS?

• Input 1 for the number of thread starts

THREADING HEIGHT?

• Input .0801 for the thread height

NUMBER OF TIMES THREADING?

• Input AUTO SET (F1)

SPINDLE PERIPHERIAL SPEED?

• Input AUTO SET (F1)

FIRST THREADING AMOUNT?

• Input .010

TOOL TYPE?

• Input 6 for the threading tool number.

X START POINT?

• Input 1.0

Z START POINT?

• Input 0

X END POINT?

• Input 1.0

Z END POINT?

• Input .85

• Select SHAPE END from the Menu keys

A new Process Number is started. Select the next Machining Unit type.

Select END from the Menu keys (F8)

COUNT NUMBER OF MACHINED WORKPIECES <YES = 1, NO = 0>?

• Input 0

TOOL RETURN POSITION <0 = CHANGE POSITION, 1 = HOME,

2 = FIXED POINT>?

• Input 1

Inputting this value will send the turret to the Home position at the end of the

program.

WORK NUMBER OF FOLLOWING PROGRAM?

• Press Input to omit this setting

EXECUTE PERPETUALLY = 1; EXECUTE NUMBER OF TIMES IN NUM = (0)

• Press Input to omit this setting

NUMBER OF TIMES TO REPEAT PROGRAM?

• Press Input to omit this setting.

Z SHIFT AMOUNT OF PROGRAM ORIGIN?

• Press Input to omit this setting.

This concludes programming of the part. A sample of the program shape plot is displayed

in Figure 16 and the program output is displayed in Figure 17.

 

Figure 16 Program Shape Plot

Courtesy Solution Ware Corp.

 

Figure 17 Finished Turning Program

Courtesy SolutionWare Corp

 

 

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