Thanks.
You are spot on about letting the stepper float. I had been turning
that one around in my head to see if that would be an option.
Kirk Wallace wrote:
Here are two other machining sites I know of:
http://www.practicalmachinist.com/
http://www.cnczone.com/
I have 12mm precision round shafting. I need to turn down one end of it
to .25 inches diameter.
I have a four jaw chuck, and center to within .001", but when I hard
couple a stepper motor to this part, it binds due to the .25" boss not
being exactly on center.
The first thing that comes to mind is... can you start with a larger
shaft and create all of your critical features in the first setup?
I do have a spider coupling, but would rather go direct due to the added
size of the coupling.
What about flex mounting the stepper motor with a rigid top link going
lets say right and a bottom link going left? I would think that the
motor bearings would need to be fairly stout and you may need to mount
to the center of the motor, but its a thought.
*
-------
===III===| Stepr |
-------
*
Side View ^
Back View \/
*=====* Link
----
| |
----
*=====* Link
or maybe three equally spaced links and no flex mount.
Is there some "trick" someone could enlighten me with?
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