Re: [CAD_CAM_EDM_DRO] small 3-axis micro stepper

OK--one vote so far that the 2.5 amp bipolar drive from xylotex may not be enough (thanks Bob). Anyone have experience converting an Enco mill/drill table to cnc? Anyone pushed their 2.5 amp cnc to the limit and want to share your performance? Any help would be appreciated--just keep in mind that I am on a tight budget and am no E.E. Here are the specs. on the Enco slide table:
*11" X 7-1/2" travel
*10TPI leadscrews
*The y-axis probably moves 35-40lbs with an empty table
Do I have any choice but to buy a high dollar cnc controller (geckos are high dollar to me!)? The ideal system would be able to make cuts with a router or milling head (cutting steel would be nice), have a 60 i.p.m. rapid and cut at around 10 i.p.m. minimum. By the way, xylotex suggested a nema 23 powermax II 253oz-in Bipolar motor (2.3 amps bipolar series). Thanks for any replies.

Robert Campbell wrote:Jared,

First determine what stepper motors you are going to use with them. The
xylotex board is limited to 35 volts.

As a general rule, if you divide the 35 volts by 20 you would get 1.75 volts
as the voltage for the stepper motors.

You can ask others, but I think that 2.5 amps may not be enough.

You may want to save up your money and buy Gecko drives.

Bob Campbell

----- Original Message -----
From: "J"
To:
Sent: Monday, September 16, 2002 12:54 PM
Subject: Re: [CAD_CAM_EDM_DRO] small 3-axis micro stepper


>
> For anyone kind enough to offer 2 cents:
> This stepper driver from xylotex looks like a good setup at a great price.
Before I go out on a limb and buy one, does anyone see anything wrong with
this system for a small cnc? I have an Enco mill/drill table that is
slightly larger and heavier than a Taig's. I don't know what to use as a
spindle yet (I guess just a router for now). Is 2.5 amps bipolar enough? I
would greatly appreciate any help from those more experienced than me
(probably 99% of those reading this right now). My problem is that I can't
afford geckos, and don't want to buy a unipolar driver board and be
disappointed with the performance.
> Thanks,
> Jared
> bsptrades wrote:
> Just spotted this outfit on e-bay looks to be a nice simple package
> using the newer allegro chips. The price seems fair at $90 for small
> projects
>
> http://www.xylotex.com/
>
> Brian
> BSP
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Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/

OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop I consider this as a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........

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