Re: [CAD_CAM_EDM_DRO] CNC to Power drive
Posted by
Dan Mauch
on 2000-07-11 09:42:58 UTC
All you need is a NE555 timer chip a few resistors and a cap and a
potentiometer to perform the duties of a signal generator. Then you would
need a three position rotary switch to select the axis.
You can then connect this to the controller to replace the pc and simply
select the axis, flip the direction switch and turn up the speed. The
stepper then acts like a power feed. I did this on an earlier version of my
5A drivers. It worked out pretty good. I'll see if I can find my schematic
for this.
Dan
-----Original Message-----
From: Walt & Craig Smith <fom@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Tuesday, July 11, 2000 9:04 AM
Subject: [CAD_CAM_EDM_DRO] CNC to Power drive
potentiometer to perform the duties of a signal generator. Then you would
need a three position rotary switch to select the axis.
You can then connect this to the controller to replace the pc and simply
select the axis, flip the direction switch and turn up the speed. The
stepper then acts like a power feed. I did this on an earlier version of my
5A drivers. It worked out pretty good. I'll see if I can find my schematic
for this.
Dan
-----Original Message-----
From: Walt & Craig Smith <fom@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Tuesday, July 11, 2000 9:04 AM
Subject: [CAD_CAM_EDM_DRO] CNC to Power drive
>I tried posting this before-but I don't think it ever made it-so herediscussion of shop built systems, for CAD, CAM, EDM, and DRO.
>it is again.
>
>I have a Sureline mill and Lathe with the Backtrack CNC conversion.
>I
>find that I often keed to do little jobs that aren't worth firing up
>the PC or switching the leads from the control box. But when doing
>these little jobs, I'd like very much to have a "power feed"
>
>Now I know there are a bunch of you guys out there that build CNC
>controlers. And while I'm not into this stuff (at least YET) I can't
>help thinking it would be fairly simple to build a "manuel" control
>for the CNC motors. Maybe something that has a few set speeds and a
>forward/revirse. I'd prob just as soom have it with a momentaiy
>contact switch (have to hold down to make it feed).
>
>So how about it guys-- any one want to stick something like this
>together?
>
>
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