Re: [CAD_CAM_EDM_DRO] re:Re: My CNC Project

Ballendo,
Only the endcaps were slipped off. I did not slide out the rotor.
The bearings are large ball (1/4" id) with a wave spring washer
to force the rotor to one end and put on a side load. I added
2 thin washers to almost close up the wave washer. Before, it was
very easy to shove the shaft into the motor. All very clean.
As long as the coupling will stay put, ther'es no reason why 2
perfectly good motor bearings shouldn't do the job.
Rich D.

ballendo@... wrote:

>
> Rich D wrote:
> >In the Vexta Motors, there are two ball bearings preloaded with a
> >wave washer spring. I added additional flat washers to tighten up
> >this and take the leadscrew thrust.
>
> Rich,
>
> I hope you didn't disassemble the motors! If so, you may easily have
> lost a LOT of torque. Steppers should NOT be taken apart by novices,
> or in less-than "clean room" conditions... This has been discussed
> before on the list.
>
> You can accomplish the same goal by placing a thrust bearing between
> the stepper body and a SOLID coupling to the screw. Take up
> the 'slack' when fastening the coupling.
>
> >I agree, Sherline could do better on the leadscrew end mounting
> >(bearings?). Rich D.
>
> On the CNC mills (and retrofits), THEY DID! MUCH better than most of
> our homebrew attempts,IMO. Of course, when you designed the machine,
> and own the factory...
>
> Hope this helps.
>
> Ballendo
>
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>
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-==Rich=-=Colorado Midland Railway=-=<http://www.geocities.com/cmsteam/>