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● NC-350A1 About auto. tool back off

Ans:

Regarding the tool back off (tool relief funtion) during tool from bottom point to top point , It is controlled by feed servo motor to move workpiece out (far away) of cutter edge about 0.5mm when cutter at bottom point to top point period.
When Ram moving from top point to bottom point , cutter will feeding a feed rate to cut the workpiece , When Ram move to bottom point , Controller will ask Y axis servo motor to move back about 0.5mm (It set at parameter No. 4 tool back off value) to let the cutter edge don't touch workpiece during Ram return from bottom point to top point.
Then Y axis servo motor will feeding 0.5mm + new feeding value 0.03mm = 0.53mm for next cutting process.