Very small 4 axis mill for cutting plastic materials

Aciera
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11 Jul 2026 11:21 - 11 Jul 2026 11:34 #347678 by Aciera

Replied by Aciera on topic Very small 4 axis mill for cutting plastic materials

Modified filter script:

File Attachment:

File Name: LinuxCNC_p..._axis.py
File Size:4 KB

Tested with /sim/axis/vismach/5axis/table-rotary-tilting/xyzac-trt.ini with the following modifications to the ini file:

[DISPLAY]
            GEOMETRY = XYZ-CA

NOTE that trt-kins and trt-vismach simulations uses unconventional rotational directions so the tool cone in the preview is on the opposite side of the path.

[FILTER]
PROGRAM_EXTENSION = .pts points file
pts = ./LinuxCNC_pts_filter_4_axis.py

A axis max limits need to be expanded to be able to tilt the table to 90° for the vismach simulation

[AXIS_A]
       MAX_LIMIT =   90

[JOINT_3]
       MAX_LIMIT =   90

Last edit: 11 Jul 2026 11:34 by Aciera.

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Aciera
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11 Jul 2026 12:46 #347681 by Aciera

Replied by Aciera on topic Very small 4 axis mill for cutting plastic materials

Yes of course, already set and configured ( i think), but a bit fuzzy on G53 vs G54 values, as i have G54 X0Y0 at the center of the C axis, but G53 are far from it.

trt-kinematics have parameters to compensate for offsets between the machine reference point and the rotation-point of the table rotary:

See for example 'xyzac-trt.ini':

# not currently supported by xyzac-trt-gui:
HALCMD = setp xyzac-trt-kins.x-rot-point 0
HALCMD = setp xyzac-trt-kins.y-rot-point 0
HALCMD = setp xyzac-trt-kins.z-rot-point 0

Note though that, as indicated, the vismach simulation does not support these.

Yup, know of any good open source one?

I do not.

The following user(s) said Thank You: tommylight

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Very small 4 axis mill for cutting plastic materials

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