Re: [CAD_CAM_EDM_DRO] Re: Surface grinder feed project

Hi Doug:
I very much doubt that you'd have a noticeable problem with the pulses
from the stepper showing up on the workpiece.
If the table is rack and pinion, the humps are far more likely originating
from the gear teeth.
If, on the other hand, its cable drive, you have the damping effect of the
cable to help you.
Regarding the air cylinder, it will have plenty of poop if it's chosen
wisely, but it will be expensive and noisy.
I'd go stepper only if that's cheaper or easier to install.
Lots of hand grinders have the mounting points for a hydraulic rig already
machined into the castings.
If that's the case, it's just a matter of bolting in the guts.
If that's not the case, then a stepper mount is a viable option in my
opinion.
Cheers

Marcus

----- Original Message -----
From: "sleyed" <Sleyed@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, January 26, 2002 11:41 PM
Subject: [CAD_CAM_EDM_DRO] Re: Surface grinder feed project


>
> Thanks for the replies. I had thought about the air cylinder but
> thought that would be compressable in terms of drag during a grinding
> pass. Burning or uneven grind could be an issue.
>
> I had also considered the stepper motor concept. I don't know if the
> pulses at low speed would transfer to the object being ground. It
> should work fine for the Y-axis.
>
> Back to the research board and scrap yard till I find it all laying
> in a pile ready to install. 8~)
>
> Doug