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Advanced G65 Macro for Precise Internal Helical Threading

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CNC Program

T? M6 (THREADMILL)
G0 G90 G40 G21 G17 G94 G80
G54 X? Y? S? M3 (Move to bore centre)
G43 Z? H?
;
G65 P1002 A? B? D?
(A = THREAD DIAMETER)
(B = PITCH)
(D = RADIUS OFFSET NUMBER)
M30

O1002
#11=[[#1*0.8]/2]
#12=[[#1/2]-#11]
;
G91 Y#12
G41 X#11 D#7
G3 X-#11 Y#11 R#11 Z#2/4
J-[#1/2] Z#2
X-#11 Y-#11 R#11 Z#2/4
G1 G40 X#11
G0 G90 Z100
M99

CNC Machine

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