G71:Multiple Turning Cycle

SYNTAX

G71 U.. R..
G71 P.. Q.. U.. W.. F..

Where
U    DEPTH OF CUT IN X AXIS (RADIAL)
R    RETRACTION
P    START N BLOCK NUMBER
Q    END N BLOCK NUMBER
U    FINISHING ALLOWANCE IN X AXIS
W    FINISHING ALLOWANCE IN Z AXIS
F    FEEDRATE 

NOTE:G71 PROGRAM GENERATE MINIMUM TO MAXIMUM DIAMETER DIRECTION BUT MACHINE READ THE PROGRAM IN OPPOSITE DIRECTION.

Tool Path

Profile

Billet size⇒diameter 30,length 65
Tool used⇒Left hand tool(T1)

NC code

N10 G21 G97 G98
N20 G28 U0 W0
N30 M06 T1
N40 M03 S3000
N50 G00 X32 Z2
N60 G71 U0.5 R0.2
N70 G71 P80 Q130 U0.2 W0.2 F60
N80 G00 X0
N90 G01 Z0
N100 G03 X16 Z-8 R8
N110 G01 Z-20
N120 G01 X24 Z-45
N130 G01 X32
N140 G70 P80 Q130
N150 G28 U0 W0
N160 M05
N170 M30

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