Re: I need a latching relay...or do I?

Dave,

No, I don't think you're being picky.

You're right about a screw being a good way to control feed. For my
work most of the cutting is on round stock. So the ideal would be a
programmable control where you input the stock diameter, also
specified would be parameters about type of material, the blade,
etc. Given those parameters optimum material removal rate per time
would be calculated and the feed would be varied accordingly as the
blade sliced through the material. You'd want a high feedrate as the
blade begins the cut, slowing as the center of the round bar is
reached and speeding up again towards the back of the cut. Hmmmmm....

Come to think about it, a pnuematic or low pressure hydraulic system
almost does the same thing automatically.

Doug

--- In CAD_CAM_EDM_DRO@y..., dave engvall <dengvall@e...> wrote:
> Doug,
>
> Consistent feed rate should come from a motor not
> a hyraulic cylinder which would give consistent
> pressure or force. Not quite the same thing.
> Maybe a dc motor with speed control driving a
> screw or ball-screw.
> Naturally, once you get hydraulics set for a
> given cut it should be OK.
>
> Sorry that I think different or am so picky. Just
> the way it is.
>
> Dave