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PROCESS STRUCTURE:
N10 G75 R ...
N20 G75 X .. Z .. P .. Q..R ..
EXPLAIN:
G75 First CNC Programming Block (first line)
R = Return amount (setback range)
G75 Second CNC Programming Block (second line)
X = Groove Depth. (the position of X coordinates of the bottom of the slot)
Z = Last groove position in z-axis. (position Z coordinates at the bottom of the slot)
P = Peck increment in x-axis (approximately every slice in X axis direction)
Q = Stepping in z-axis. (toolpath range in Z axis after each slice)
Note: the grooving tool is 4mm wide, so the starting range is at the z-14 slot tool.
-Each time the tool will go into 2mm (P2000) along the X axis, and will back out 1mm (to break and exit chips, R in line 1)
-After 1 groove on the X axis, it will move to the next groove by moving the tool 3mm (Q3000) along the Z axis, and will repeat to the end position
Reference more tutorial:
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3. G73 Pattern Repeating Cycle - Think simple with G73 rough lathe cnc casting
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9.OFFSET drill bits on cnc lathes (HOW TO OFFSET DRILL ON CNC LATHE)
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10. Double start thread cnc fanuc
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