Linuxcnc lathe threading problem
- rohit269
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08 Oct 2021 16:12 - 08 Oct 2021 16:13 #222558
by rohit269
Linuxcnc lathe threading problem was created by rohit269
Sir,
I am converted mach3 lathe to linuxcnc lathe and also change spindle rpm sensor disc (16 slot) and this linuxcnc lathe not make threading correctly and the thread has been always damaged and I am also attached files please see files and tell how to solve this problem.
Many thanks,
Rohit Gupta
I am converted mach3 lathe to linuxcnc lathe and also change spindle rpm sensor disc (16 slot) and this linuxcnc lathe not make threading correctly and the thread has been always damaged and I am also attached files please see files and tell how to solve this problem.
Many thanks,
Rohit Gupta
Last edit: 08 Oct 2021 16:13 by rohit269.
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- zz912
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08 Oct 2021 18:15 #222576
by zz912
Replied by zz912 on topic Linuxcnc lathe threading problem
if you want to run LCNC reliably, do not use a parallel port and buy a mesa card. 7i96 or 7i76e for example. However, if you want to find an error on the parallel port at all costs, you need to find out if the steps on the encoder or on the Z axis are lost or both.
Make an empty thread a few times and then measure whether the spindle and axes return to the home position.
Make an empty thread a few times and then measure whether the spindle and axes return to the home position.
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- andypugh
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08 Oct 2021 23:07 #222607
by andypugh
You need a once-per-rev index as well as the 16 pulses. (Or, in the development version, there is an option to use missing-tooth index)
Replied by andypugh on topic Linuxcnc lathe threading problem
I don't see any evidence of an index, you seem to have only one sensor and 16 slots. So the system does not know when to start the threading pass.I am converted mach3 lathe to linuxcnc lathe and also change spindle rpm sensor disc (16 slot) and this linuxcnc lathe not make threading correctly
You need a once-per-rev index as well as the 16 pulses. (Or, in the development version, there is an option to use missing-tooth index)
The following user(s) said Thank You: tommylight
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- rohit269
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09 Oct 2021 04:33 #222623
by rohit269
Replied by rohit269 on topic Linuxcnc lathe threading problem
Many thanks for supporting me,
Sir I am already connected spindle sensor single output into two pin 11 and 12 for index and Spindle phase A but thread always damaged.
Sir I am already connected spindle sensor single output into two pin 11 and 12 for index and Spindle phase A but thread always damaged.
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- Dinuka_Shehan
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09 Oct 2021 20:22 - 09 Oct 2021 20:25 #222683
by Dinuka_Shehan
i used omron quadrature encoder.
It have A,B & Z phases.
Easy to connect.
Replied by Dinuka_Shehan on topic Linuxcnc lathe threading problem
i used omron quadrature encoder.
It have A,B & Z phases.
Easy to connect.
Last edit: 09 Oct 2021 20:25 by Dinuka_Shehan.
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- andypugh
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11 Oct 2021 07:47 #222824
by andypugh
Replied by andypugh on topic Linuxcnc lathe threading problem
The index must be once-per-revolution. My impression is that you have 16 indexes per revolution?Sir I am already connected spindle sensor single output into two pin 11 and 12 for index and Spindle phase A but thread always damaged.
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