Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: fixittt on May 10, 2012, 08:24:54 AM

Title: funky Z arcs in gcode
Post by: fixittt on May 10, 2012, 08:24:54 AM

am helping a friend try and decode these weird Z arc movements.

There is no A axis rotation, its a flat 3d part.
for some odd reason there are Z arcs that are not making sense.  Maybe someone with a little more knowledge can help shed some light.
Cam software is Mecsofts visual mill if I remember right.

After the first to small pockets the Z moves up, to the from in y in a weird arc, plunges and breaks the tool.
I can see the movements in mach3.  Dont know if its a post processor/G&M code or what.

Any ideas?

Title: Re: funky Z arcs in gcode
Post by: stirling on May 10, 2012, 09:10:05 AM

look at your code. you have loads of "funky" J,K arc moves in the YZ plane. Mach is doing exactly what you've told it to do. Check out "summary of gcodes" for G2,G3 with G17,18,19.

Ian

Title: Re: funky Z arcs in gcode
Post by: fixittt on May 10, 2012, 09:25:20 AM

Stirling,
Thanks for the reply, I knew it was something to do with the arc fitted tool pathing strategy.  We have a call out to mecsoft, I just wanted to see if someone would say "Hey its because of......"

Thanks

Title: Re: funky Z arcs in gcode
Post by: stirling on May 10, 2012, 09:35:57 AM

Quote from: fixittt on May 10, 2012, 09:25:20 AM

We have a call out to mecsoft

I'll resist the temptation to say something smart.... and just wish you luck.

Meanwhile here's your file with the funkyness removed - don't know if it's more like what you wanted/expected.

Ian