Terms Used in cnc machine programming

Terms Used in cnc machine programming –


Following terms are mostly used in cnc machine or in vmc machine programming


A – Angular dimension around x- axis
B - Angular dimension around y- axis
C - Angular dimension around z- axis
F – Feed
G – Praparatory function
I – Distance to arc centre to X
J - Distance to arc centre to Y
K - Distance to arc centre to Z

M  - Miscellaneous function
N – Sequence number
S – Spindle speed
T – Tool selection
U – Secondary motion dimensional parllel to X
V - Secondary motion dimensional parllel to Y
W - Secondary motion dimensional parllel to Z

A typical format for a block in cnc machine –

N1 G3 X5 Y10 Z8 U..V..W..I..J..K..F50 S 100 T1 M3


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