G75 GROOVING CYCLE

[girishnadkarni]

Dear All
kindly help me out in the grooving cycle programming with g75 with detailed explanation
i want to machine a groove of
width 8mm
distance from face of the job 16mm
groove radial depth 1.75mm
insert width 3mm
system fanuc oi mate
kindly reply asap
rgds
Girish

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[sinha_nsit]

OD is also needed.
Say, it is 20 mm dia.
Use the lower left corner of the insert as the reference point of the tool.

G00 X22 Z1;
Z-19;
G01 X20.5 F10;
G75 R.2; (radial retraction in mm after each peck)
G75 X18.25 Z-24 P1000 Q2500 F10;
(X18.25 Z-24) is the lower left corner of the groove,
Peck length is 1 mm,
Lateral shift is 2.5 mm,
Feed is 10 mm/min (with G98).

If you are serious about CNC programming, you must have a personal copy of a programming book. You will find many answers there.

Edit: Replace X18.25 by X16.5 for 1.75 mm depth