Turning Tool Offsets
01 Aug 2015 09:25 - 01 Aug 2015 09:27 #61086
by russtuff
Turning Tool Offsets was created by russtuff
I am trying to set up offsets for a few tools and having some issues. In the image below, I have been setting up the tool on the left with X and Z offsets in the location designated "1".
For neutral tools like the one on the right, should location "2" or location "3" be used for setting the X and Z offsets?
These are not pictures of my tools, just images I have found online.
For neutral tools like the one on the right, should location "2" or location "3" be used for setting the X and Z offsets?
These are not pictures of my tools, just images I have found online.
Last edit: 01 Aug 2015 09:27 by russtuff.
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01 Aug 2015 17:22 #61094
by ArcEye
Replied by ArcEye on topic Turning Tool Offsets
Hi
The only thing that makes sense with lathe tool offsets, is that they position the new tool so that the cutting tip is presented
at the same place on the workpiece, for the same given co-ordinates.
The shape of tools may mean that their usage differs, you would not expect to face off a billet with the second tool
nor to cut a concave arc with the first one.
However if you program in X#billet-diameter Z0, you would expect the centre of the cutting tip to be at that point, not the
shoulder of the tool holder.
regards
The only thing that makes sense with lathe tool offsets, is that they position the new tool so that the cutting tip is presented
at the same place on the workpiece, for the same given co-ordinates.
The shape of tools may mean that their usage differs, you would not expect to face off a billet with the second tool
nor to cut a concave arc with the first one.
However if you program in X#billet-diameter Z0, you would expect the centre of the cutting tip to be at that point, not the
shoulder of the tool holder.
regards
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01 Aug 2015 21:15 #61100
by BigJohnT
Replied by BigJohnT on topic Turning Tool Offsets
Take a look at lathe tool orientation here:
www.linuxcnc.org/docs/2.7/html/lathe/lathe-user.html
Basically you need to what makes sense for your G code. For example I set the leading edge of my parting tool to Z0 so my parts are the correct size.
Some more info here:
gnipsel.com/linuxcnc/g-code/lathe02.html
JT
www.linuxcnc.org/docs/2.7/html/lathe/lathe-user.html
Basically you need to what makes sense for your G code. For example I set the leading edge of my parting tool to Z0 so my parts are the correct size.
Some more info here:
gnipsel.com/linuxcnc/g-code/lathe02.html
JT
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02 Aug 2015 07:11 #61115
by russtuff
Replied by russtuff on topic Turning Tool Offsets
Cool thanks. I thought I was setting up the profile tool on the wrong section (right at the tip) but the tip is actually the correct place to do it.
The problem I was having with my offsets was due to my not using G43 during each tool change. For some reason when using my mill any M6 automatically G43's,
but not on my lathe.
Oh well, problem solved!
The problem I was having with my offsets was due to my not using G43 during each tool change. For some reason when using my mill any M6 automatically G43's,
but not on my lathe.
Oh well, problem solved!
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02 Aug 2015 18:07 #61119
by BigJohnT
Replied by BigJohnT on topic Turning Tool Offsets
When changing tools with LinuxCNC you should use Tn M6 G43. LinuxCNC does not automagicly add a G43 unless your GUI does it for you.
JT
JT
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