Setting offsets for boring and left hand tooling

Help and advice for Denfords lathe control software VR Turning.

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mrrouter
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Joined: Mon 09 Nov , 2009 10:59 am

Setting offsets for boring and left hand tooling

Post by mrrouter » Mon 09 Nov , 2009 12:53 pm

How would you set the offsets for a boring tool and a left handed turning tool?

On a similar note. Do the offsets for the tools other than the main turning tool only need setting once? i.e do they always reference from this tool and are set or do they need resetting for each job.

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Re: Setting offsets for boring and left hand tooling

Post by Denford Admin » Mon 09 Nov , 2009 16:32 pm

How would you set the offsets for a boring tool and a left handed turning tool?
Don't know about anyone else, but I'd face off a bar with Tool 1 and set the workshift to Z0.00
Then bring the LH tool in and cut a groove say 5mm in from the front face.
Measure the groove to the front face with a micrometer/verniers and set the RH tool offset for Z (eg so the actual position reads say -4.56)
Setting the X offset should just be a case of turning the OD and measuring it.

With a boring tool, you'd have to get some tube, or drill a hole in some bar. Then bring the boring bar in to cut a small ledge and measure it with internal bit of your verniers. Touching on a known face should let you set the Z offset
Do the offsets for the tools other than the main turning tool only need setting once?

We set the main work offset in relation to Tool 1 (it dosn't have to be this way - that's just how we do it)
So, Tool 1 usually has X0.0 Z0.0 in it's tool offset values.
All the other tools then, are in effect the difference in position from Tool 1. They should never need to change, unless you change the tips or move them for some reason.

So, when you want to set the work offsets, so the program knows where the front of the billet is, you pick Tool 1 - face off the bar and set the workoffset so that Z read Z0.00

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