why does centroid never remember its coordinate/home

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tblough
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Re: why does centroid never remember its coordinate/home

Post by tblough »

If you had a closed loop system or even an index pulse with a hybrid system, you'd only need to home. Having to take a cut to calibrate the X axis is one of the tradeoffs you make when going with an open-loop control.
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martyscncgarage
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Re: why does centroid never remember its coordinate/home

Post by martyscncgarage »

Homing to an index pulse on a servo motor like a DMM and DYN2 or DYN4 helps with lathes.
There are very few drives that give this output to the user....
putting a very precise proximity sensor over the ballscrew pulley is another method. Emco did this for quite some time on their stepper driven lathes.
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
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ShawnM
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Re: why does centroid never remember its coordinate/home

Post by ShawnM »

martyscncgarage wrote: Wed Jan 19, 2022 5:30 pm Homing to an index pulse on a servo motor like a DMM and DYN2 or DYN4 helps with lathes.
There are very few drives that give this output to the user....
putting a very precise proximity sensor over the ballscrew pulley is another method. Emco did this for quite some time on their stepper driven lathes.
Don't forget the NEW DYN5 drives. :mrgreen:
martyscncgarage
Posts: 9912
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
Location: Mesa, AZ

Re: why does centroid never remember its coordinate/home

Post by martyscncgarage »

ShawnM wrote: Wed Jan 19, 2022 8:33 pm
martyscncgarage wrote: Wed Jan 19, 2022 5:30 pm Homing to an index pulse on a servo motor like a DMM and DYN2 or DYN4 helps with lathes.
There are very few drives that give this output to the user....
putting a very precise proximity sensor over the ballscrew pulley is another method. Emco did this for quite some time on their stepper driven lathes.
Don't forget the NEW DYN5 drives. :mrgreen:
Yeah, but out of stock due to chip shortage, with no ETA
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
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