Smooth C Axis Motion

Discuss Thermwood 5-axis Machinery, Controller, and Software.

Moderators: Jason Susnjara, Clint Buechlein, Jim Bullis

Alex Munro
New Member
Posts: 4
Joined: Tue, Mar 10 2020, 8:55PM
Company Name: Warringah Plastics
Country: AUSTRALIA

Smooth C Axis Motion

Postby Alex Munro » Thu, Oct 26 2023, 4:57PM

Hi all,

I seem to have an issue where the C-axis motion doesn't move smoothly in conjunction with any X and Y moves. It will hold the initial C Axis position until the last moment, stop, move the C-axis to the new value and then continue with the rest of the travel.

In the Mastercam simulation, it moves smoothly between the two positions whilst moving X and Y, so it's obviously how the post is producing the gcode.

I have attached a sample piece of code that shows the C-axis behaviour. Between lines 1089 and 1599 is where it should be moving C but it does not.

Does anyone know why this would be happening and how to fix it?

Thanks
Alex
Attachments
TOJ001.zip
(16.22 KiB) Downloaded 81 times

Clint Buechlein
Thermwood Team
Posts: 689
Joined: Fri, May 15 2015, 1:21PM
Company Name: Thermwood Corp
Country: UNITED STATES

Re: Smooth C Axis Motion

Postby Clint Buechlein » Mon, Oct 30 2023, 3:27PM

Alex,

You can talk with your reseller to see about something in the post, but likely it isn't something that can be corrected with a flip of the switch. Mastercam doesn't output any transition C motions to posting when the tool is vertical.

-Clint-

Alex Munro
New Member
Posts: 4
Joined: Tue, Mar 10 2020, 8:55PM
Company Name: Warringah Plastics
Country: AUSTRALIA

Re: Smooth C Axis Motion

Postby Alex Munro » Sun, Nov 26 2023, 10:08PM

Thanks Clint.


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