RE: [CAD_CAM_EDM_DRO] Re: Stepper control w/o a computer?????

Yes the box has an internal pulse generator that could be varied by the
speed control pot. But it also could by flipping a switch use a pc for a
pulse generator also.
dan

-----Original Message-----
From: fozzyber <jerry@...> [mailto:jerry@...]
Sent: Friday, January 03, 2003 8:39 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Stepper control w/o a computer?????


So this device you designed, just replaced the computer.
You would plug your stepper motor driver in to it? correct?

I'm sorry, I'm understanding more about CNC but I'm still lacking. I
just about understand steppers. They are like a regular burshless
motor (coils on outside of shaft). They rotate by the magnetic fields
moving. the field rotates by different coils being turned on and off.
These coils are turned on and off by a "driver". This driver provides
power to the different coils in a specific way as to make the motors
spin.(step dir) These drivers are told what to by a controller. This
controller (normally for us a PC) is reading gcode or a program
running on the controller. Or in this case your "black box"
Is this more are less correct or am I more confused than I think?




Jerry

, "Dan Mauch" <dmauch@s...> wrote:

> Not really. I designed a stepper motor 3 axis power feed for a small
> machine tool company. I just used a 555 timer and a rotary switch to
> select the axis. I used a switch to change directions and it had a

db25

> for parallel port operation. It was selected from a selector

switch. Of

> course there was also a speed control pot. The master module

provided

> pulse train via the selector switch to the stepper motor driver. Dan
>

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