[micky316]

hI lads ,Ive just had G112 option enabled on my Star SR20R and Im trying to cut a "Torx" type fitting on the end of a screwdriver using a front Y axis milling cutter.I am trying to do the path incrementally using Y & for one section then repeating it 6 times to complete the shape .The manual is doing my head in can anyone help before I whack the machine with a large hammer ,cheers for any help
Mick

[dookie2022]

What most people have trouble with G112 is the C axis as it is not radial axis but a linear (straight line) axis.
Look at it as a X,Y application on a machining centre subsituting the X for C
The other issue I find is the tool compensation when using this function is a pain in the butt.
I always program the cutter path (centre of tool) as it is a lot easier

If you look at the sample program in the star manual the Y axis is still treated as a diameter and the C axis linear is a radius axis.
The C zero and Y zero is in the centre of the spindle

[micky316]

Thanks ,Im trying to use comp so may end up doing away with that and program the cutter path instead as you sugest ,I will have another few hours on it this morning

[micky316]

cracked it just wrote a subroutine starting with G112 and ending G113 and repeated it 6 times worked a treat ,now all I need to do is get TNR working
Mick