Fusion CAD / CAM Problem

[Shaun ChurchillParticipant @shaunchurchill54517]

Every now and then in Fusion I use the Tormach mill post processor when converting a design to G-Code and when I run the code, effectively the depth of cut doesnt go below the top datum surface which I probe and set at zero. Anyone have any idea what causes this intermittent issue. I have tried removing the H value that potentially gives a tool length offset and that makes no difference. Any advice welcome ad to what might be causing this.

Shaun

[JasonBModerator @jasonb]

Can’t say it is a problem I have had when using it to produce Mach3 code. I assume the H is what I have on line 18 and not something I have ever had o alter.

I mostly use the top of the work as my datum and set the tool using a 20mm block so when tool just slips under block enter my height as 20mm

[Julie AnnParticipant @julieann]

Assuming you are not using multiple tools within a single program, and do not use a tool length table, then you shouldn’t need to use H commands at all.

Simply set the Z zero by touching off the tool to be used on the reference (work) surface.

Tool lengths need to be programmed when in absolute mode, ie, G90.

Julie

[JasonBModerator @jasonb]

For those that don’t use F360 here is the same path as above but done for Tormach/Pilot Path. The H comes a bit earlier on.

[Julie AnnParticipant @julieann]

I have a Tormach CNC mill and use PathPilot. The code shown by JasonB is similar to what I use when using tool tables. My code for a tool change is:

Nxx T01 G43 H01 M06

The command G43 tells the machine to use the positive tool length offset H01 (for tool 1) relative to the master tool, tool zero in my case.

For cases where I use only one tool, and don’t use tool length offsets, the code is:

Nxx T01 M06

There is no H number selection, and it is not needed.

So, again, if the OP is only using one tool and not using a tool table no H number selection needs to appear in the code.

Julie

[Alan Wood 4Participant @alanwood4]

What happens if you set the maximum tool number to 1 in the Post Properties ?

Otherwise you can edit the Post Processor and rem out this function ?

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