gantry 5axiskins correct joint assignment

More
18 Oct 2021 22:33 #223506 by jgnoss
I'm building a 5 axis XYZBC mill, where Y axis is a gantry. 
I've got my 6 joints moving in joint mode using the XYZBC 5 axis bridge mill as a starting point.
On screen it looks good and is working as it should, but I don't get it, how to configure the second Y joint working together with primary Y joint.
Looking at the example config it looks like joint5 for W axis has the parameters as joint1 for Y axis, but my understanding is that UVW axis are tool movements.
I've build gantry machines before and XYYZ somehow did the trick.
I guess I got confused by the Name "5 axis bridge mill" but this configuration doesn't have a gantry in it.
So, do I have to add another joint for my second Y and how do I include that in the ini file sections in the right order?

Thanks Ju 

File Attachment:

File Name: n01_5axis_test.tgz
File Size:7 KB
Attachments:

Please Log in or Create an account to join the conversation.

More
19 Oct 2021 20:34 #223592 by jgnoss
cleaned up some mess in config files. but still no luck getting the second Y moving in world mode.

 

File Attachment:

File Name: n03_5axis_test.tgz
File Size:6 KB
Attachments:

Please Log in or Create an account to join the conversation.

More
20 Oct 2021 02:16 #223617 by rodw
You need HOME_SEQUENCE = -1 for both Y axs,

also you have more joints defined here
[TRAJ]
COORDINATES = X Y Z B C Y W

than what you have in your ini file

Please Log in or Create an account to join the conversation.

More
20 Oct 2021 11:51 #223659 by andypugh
See the bridgemill INI file for the (well hidden) answer)

github.com/LinuxCNC/linuxcnc/blob/master...gemill/5axis.ini#L72

If you use the line 96 example then your Y axis gantry will be joints 1 and 6.

In the [JOINTS] section of the INI give [JOINT_1] and [JOINT_6] both the HOME_SEQUENCE of -1 and they should gantry-home to their individualk home switches

Please Log in or Create an account to join the conversation.

Time to create page: 0.063 seconds
Powered by Kunena Forum