Using Sherline Mill as CNC with Head Turned 90 Deg
- Todd Zuercher
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27 Jan 2015 10:51 #55376
by Todd Zuercher
Replied by Todd Zuercher on topic Using Sherline Mill as CNC with Head Turned 90 Deg
If you are only turning the head, and not the z axis, then would it not be effectively a manual B axis?
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27 Jan 2015 18:08 #55381
by andypugh
Yes, and I have considered setting up my tilting-head mill with a 4-axis kinematics that allows direct-entry of the angle that has been set.
But that seems like rather an "advanced" approach in this case and won't actually help with the request to be able to use normal XYZ G-code in the tilted mode.
(I would expect my putative setup to jog in XYZ normally and in the W axis parallel with the spindle)
Replied by andypugh on topic Using Sherline Mill as CNC with Head Turned 90 Deg
If you are only turning the head, and not the z axis, then would it not be effectively a manual B axis?
Yes, and I have considered setting up my tilting-head mill with a 4-axis kinematics that allows direct-entry of the angle that has been set.
But that seems like rather an "advanced" approach in this case and won't actually help with the request to be able to use normal XYZ G-code in the tilted mode.
(I would expect my putative setup to jog in XYZ normally and in the W axis parallel with the spindle)
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27 Jan 2015 21:31 #55383
by johnl2
Replied by johnl2 on topic Using Sherline Mill as CNC with Head Turned 90 Deg
I don't understand your question.
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27 Jan 2015 22:04 #55384
by andypugh
This Video shows a similar machine to yours with CNC-controlled B and C axes.
It is possible to set up LinuxCNC to "understand" such a geometry in terms of tool-tip coordinates and angles so that (for example) a move in the W-axis will actually move the X, Y and Z axes together in proportions depending on the current B and C angles.
You _could_ set up your machine to automatically compensate for whatever B-angle you set the head to. But that won't let you use standard XYZ G-code.
Replied by andypugh on topic Using Sherline Mill as CNC with Head Turned 90 Deg
I don't understand your question.
This Video shows a similar machine to yours with CNC-controlled B and C axes.
It is possible to set up LinuxCNC to "understand" such a geometry in terms of tool-tip coordinates and angles so that (for example) a move in the W-axis will actually move the X, Y and Z axes together in proportions depending on the current B and C angles.
You _could_ set up your machine to automatically compensate for whatever B-angle you set the head to. But that won't let you use standard XYZ G-code.
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27 Jan 2015 22:09 #55385
by johnl2
Replied by johnl2 on topic Using Sherline Mill as CNC with Head Turned 90 Deg
So it cannot be done? Also, I have never heard of these other axis you're naming, like W, B and C
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27 Jan 2015 22:18 #55387
by andypugh
Now I don't understand your question![:-) :-)](/media/kunena/emoticons/smile.png)
Yes, it can be done, but it won't achieve what you seem to want.
LinuxCNC supports up to 9 axes, XYZ, ABC, UVW. ABC are conventionally roatations, and UVW are conventionally a second (rotated) set of cartesian axes.
However, on the basic level all that XYZABCUVW do is pass values from G-code to HAL, and what you do with the numbers is entirely up to the machine builder.
Replied by andypugh on topic Using Sherline Mill as CNC with Head Turned 90 Deg
So it cannot be done?
Now I don't understand your question
![:-) :-)](/media/kunena/emoticons/smile.png)
Yes, it can be done, but it won't achieve what you seem to want.
Also, I have never heard of these other axis you're naming, like W, B and C
LinuxCNC supports up to 9 axes, XYZ, ABC, UVW. ABC are conventionally roatations, and UVW are conventionally a second (rotated) set of cartesian axes.
However, on the basic level all that XYZABCUVW do is pass values from G-code to HAL, and what you do with the numbers is entirely up to the machine builder.
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28 Jan 2015 01:28 #55395
by johnl2
Replied by johnl2 on topic Using Sherline Mill as CNC with Head Turned 90 Deg
Oh okay, I see.
You _could_ set up your machine to automatically compensate for whatever B-angle you set the head to. But that won't let you use standard XYZ G-code.
This was the sentence that made me believe that it cannot be done. B/c what I want is what you said, to use standard xyz g-code with a tilted head making the head x and the x the z .
You _could_ set up your machine to automatically compensate for whatever B-angle you set the head to. But that won't let you use standard XYZ G-code.
This was the sentence that made me believe that it cannot be done. B/c what I want is what you said, to use standard xyz g-code with a tilted head making the head x and the x the z .
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28 Jan 2015 01:51 #55396
by andypugh
Right, so ignore the B-axis and 5-axis kinematics ideas, and just make a config with the axes swapped around.
Replied by andypugh on topic Using Sherline Mill as CNC with Head Turned 90 Deg
B/c what I want is what you said, to use standard xyz g-code with a tilted head making the head x and the x the z .
Right, so ignore the B-axis and 5-axis kinematics ideas, and just make a config with the axes swapped around.
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28 Jan 2015 03:38 #55399
by johnl2
Replied by johnl2 on topic Using Sherline Mill as CNC with Head Turned 90 Deg
Okay, I will try that. So I'm going into the stepconf wizard?
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28 Jan 2015 07:15 #55402
by andypugh
That's one way. Or you can hand-edit a copy of the existing INI and HAL.
Replied by andypugh on topic Using Sherline Mill as CNC with Head Turned 90 Deg
Okay, I will try that. So I'm going into the stepconf wizard?
That's one way. Or you can hand-edit a copy of the existing INI and HAL.
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