Tool files

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31 Jan 2012 18:49 - 31 Jan 2012 19:15 #17303 by hemicro
Tool files was created by hemicro
I have been doing some cutting of objects that I have created using Vectric Cut2d and I have some questions concerning the tool files. I have assigned a .250 end mill as tool #1 in cut2d. When I run the gcode in axis, tool #1 is displayed in the "tool" box, but tool #1 in the axis file is set up as a 1/8" end mill with a .511 offset. The part that is cut has the correct dimensions, so my question is-Is the tool diameter, offsets etc. that axis is using determined by the cut2d produced gcode? If not, the dimensions of the part should be off by 1/8" I think. Does this have anything to do with "cutter compensation"? I have looked at the cut2d gcode file and G40 and G49 are run and maybe that causes axis to not use the emc2 tool file.
Last edit: 31 Jan 2012 19:15 by hemicro. Reason: More info

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31 Jan 2012 19:19 #17304 by BigJohnT
Replied by BigJohnT on topic Re:Tool files
What g code does cut2d produce to load a tool?

John

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31 Jan 2012 19:29 - 31 Jan 2012 19:56 #17305 by hemicro
Replied by hemicro on topic Re:Tool files
It uses M6 T#
Last edit: 31 Jan 2012 19:56 by hemicro. Reason: More info

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31 Jan 2012 19:36 #17306 by hemicro
Replied by hemicro on topic Re:Tool files
Another question has come to mind-if the #1 tool in axis is 1/8" in diameter, why is the offset .511. Shouldn't the offset be 1/2 the tool diameter?

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31 Jan 2012 19:42 #17307 by BigJohnT
Replied by BigJohnT on topic Re:Tool files
To load a tool from the tool table you program

T1 M6 G43

of course you need to store the proper values in the tool table first. This can be done with a G10 code.

The .511 would be the length offset I assume without looking.

John

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31 Jan 2012 20:00 - 31 Jan 2012 20:21 #17308 by hemicro
Replied by hemicro on topic Re:Tool files
The cut2d code does uses G40 G49 M6 T1. It probably would be best if updated the axis tool file to match the cut2d tool file. All the info should then be the same. It just confuses me that the tool sizes are different and yet it cuts to the right dimensions!!!! If the .511 is the tool length setup then I was wrong in thinking that it was the tool diameter offset.

%
G20 G40 G49 G61 M6 T1
G17
Last edit: 31 Jan 2012 20:21 by hemicro.

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01 Feb 2012 00:39 #17311 by BigJohnT
Replied by BigJohnT on topic Re:Tool files
Well, if cut2d calculates the path based on the tool diameter it will be the correct size if it does not use cutter radius comp.

John

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01 Feb 2012 14:56 #17316 by cncbasher
Replied by cncbasher on topic Re:Tool files
the easiest way is to clear all the tool table entrys in linuxcnc (tool.tbl) and use the toolsdatabase tables from cut2d
as your only duplicating the same entrys , to use the tool table tool offsets in linuxcnc you need to add G43 or they will have no effect

whereas using the database in cut2d will incorporate cut2d tool offsets as shown

saves a screw up using multiple setups
and if you need to alter a gcode program , doing so all in cut2d will make life easier

Dave

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01 Feb 2012 18:30 #17322 by hemicro
Replied by hemicro on topic Re:Tool files
Thanks, that makes sense. It just made me wonder why the cutout was exact but the axis tool showed the wrong size. I will use the the cut2d tool files and quit trying to make this harder than it is. :unsure:

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