Mill Counter Bore Subroutine

The attached subroutines are for a mill. The purpose of these subroutines is to mill a counter bore for a socket head cap screw or similar function when the center of the hole is all ready drilled out.

The subs function as follows
Rapid to center of hole to clearance height
Turn on spindle and coolant
Feed to edge of hole
Spiral down to bottom of hole
Do one circle to wipe bottom of hole
Feed to center of hole
Rapid to safe Z

The only difference between cb and cba is cb you pick the depth of each spiral and cba you pick the angle you wish to spiral down at.

Enjoy
John