Hello Guest it is May 27, 2019, 05:57:05 AM

Author Topic: Losing Pulses at lower accelerations  (Read 5042 times)

0 Members and 1 Guest are viewing this topic.

Re: Losing Pulses at lower accelerations
« Reply #10 on: April 08, 2013, 11:05:46 AM »
10K,
I may have missed it it your posts, but what are the specs of your lead screws?  Perhaps you are asking for too much rpms trying to get faster ipms with a screw pitch that is not capable of the speeds you seek.
Regards,
John Champlain

Offline Chaoticone

*
  • *
  •  5,496 5,496
  • Precision Chaos
    • View Profile
Re: Losing Pulses at lower accelerations
« Reply #11 on: April 08, 2013, 11:14:48 AM »
10K, in this post you will find a link to a video of a very nice machine running at roughly 758 IPM.

http://www.machsupport.com/forum/index.php/topic,22495.msg170685.html#msg170685

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!

Offline 10k

*
  •  13 13
    • View Profile
Re: Losing Pulses at lower accelerations
« Reply #12 on: April 08, 2013, 11:41:41 AM »
Screw pitch on X and Y is 5 turns per inch.  Steppers are 2000 pulses per rev, so 5 x 2000 = 10,000 pulses per inch.

As I mentioned, I can get the X axis to at least 200ipm with no lost steps if it's running by itself.  The problem comes in when X and Y are running simultaneously, as happens for circles. 

Going from a 4A to a 15A power supply does not make any difference.
Re: Losing Pulses at lower accelerations
« Reply #13 on: April 08, 2013, 05:00:15 PM »
10K,

Sounds like your steppers may be limiting higher, more reliable, rpms past 1000.

John Champlain