Setting boring bar tool offset.
Posted: Sat 11 Mar , 2017 1:54 am
Hi I'm just at the point of setting up a boring bar in my Starturn 5 which is DOS controlled.
I have everything else set up no problem following the instruction from P50 in this PDF viewtopic.php?f=15&t=953
I am however unsure as to how I need to set up the for the boring bar in X (Z will be just touch the faced of end of piece in chuck).
Can anyone shed some light. It can't be that hard.
for setting the drill its touch the side of the drill on a known dia mounted in the chuck and input the Dia of the material and the dia of the drill added together eg 25+5 = 30mm. which will give a value around of around -150 (distance from centre of ATC to work piece centre).
So given that all tools mounted on in the round holes in the ATC will have the same centre, drills will all be the same in X. I know my boring bar is 5mm off centre. Would I need to change the offset from -150 to -145 or to -155? OR do I need to tell it Its 10mm so it would become -140 or -160.
Or do I drill a hole and touch the boring bar on the inside surface and input that figure?
Many thanks
Pete
I have everything else set up no problem following the instruction from P50 in this PDF viewtopic.php?f=15&t=953
I am however unsure as to how I need to set up the for the boring bar in X (Z will be just touch the faced of end of piece in chuck).
Can anyone shed some light. It can't be that hard.
for setting the drill its touch the side of the drill on a known dia mounted in the chuck and input the Dia of the material and the dia of the drill added together eg 25+5 = 30mm. which will give a value around of around -150 (distance from centre of ATC to work piece centre).
So given that all tools mounted on in the round holes in the ATC will have the same centre, drills will all be the same in X. I know my boring bar is 5mm off centre. Would I need to change the offset from -150 to -145 or to -155? OR do I need to tell it Its 10mm so it would become -140 or -160.
Or do I drill a hole and touch the boring bar on the inside surface and input that figure?
Many thanks
Pete