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Re: why does centroid never remember its coordinate/home
Posted: Wed Jan 19, 2022 5:13 pm
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.
Re: why does centroid never remember its coordinate/home
Posted: Wed Jan 19, 2022 5:30 pm
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.
Re: why does centroid never remember its coordinate/home
Posted: Wed Jan 19, 2022 8:33 pm
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.
Re: why does centroid never remember its coordinate/home
Posted: Wed Jan 19, 2022 8:52 pm
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.
Yeah, but out of stock due to chip shortage, with no ETA