Hey Doug. Thanks for the report. Good thoughts all.You might look at www.McMaster.com and search for ball screws. Or attempt to put the link below back together. Their 5/8 screws are about $1.25 an inch and the nuts run $25. I used a single nut to test lash and got between 0.001 and 0.003. I know
Hi Howard
You're right of course. My fault for reading the schematics and not the words.
Forward and reverse pulses are available for essentially open loop moves.
These are available using EMC2 and a parallel port bu I'm with others that
this is a poor substitute for real closed loop servo
Hi Doug,
I've had passable luck on ebay for ball screws. Sometime you look and
there is nothing and other times several good ones. Just depends.
Good hunting.
Dave
On Mar 14, 2008, at 5:24 AM, [EMAIL PROTECTED] wrote:
Hey Doug. Thanks for the report. Good thoughts all.
You might look
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Andy
[EMAIL PROTECTED] wrote:
Hey Doug. Thanks for the report. Good thoughts all.
You might look at www.McMaster.com and search for ball screws. Or
attempt to put the link
Andrew Ayre wrote:
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Assuming the screws are mounted on a machine, you put a dial
indicator (preferably one that reads out in .0001 units -- they
call that a tenths reading indicator)
Hi Andrew, Jon
Sorry I didn't get the post from Andrew. Gonna have to look at why.
Jon's right. I set up a machine in order to test several things. It was an
old Grizzly Sieg. The goal was to retrofit for low cost and reasonably good
benchtop quality. I measured the lash on all three
Thanks Jon for the explanation.
Andy
Jon Elson wrote:
Andrew Ayre wrote:
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Assuming the screws are mounted on a machine, you put a dial
indicator (preferably one that reads out in
I am curious about bigger machines, anybody tried making something with a 40
taper spindle. I am halfway done with my own design, using servos, linear
scales, linear bearings and ballscrews. I am trying to keep the BOM under 20k
and of course I am using EMC. Its work envelope is
