Re: [CAD_CAM_EDM_DRO] I'm curious

Hi, well doesnt sound like you have reviewed Mach3 softwear yet? and it
sounds like you like something that can be obsolete overnight, all these
motors with drive attatched and propietary softwear to run them sounds fine
till it breaks and you need another motor/drive and the company that made
them went under years ago? let's see some pictures of your CNC mill or
lathe? cul brian f.

----- Original Message -----
From: <yahoo@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, July 20, 2005 12:35 AM
Subject: [CAD_CAM_EDM_DRO] I'm curious


> Why don't I see more CNC guys putting together drive system from major
> manufacturers.
> I've been watching this group for the last month and looking in the
archives
> it seems like this hobby is stuck in the late 70's.
>
> I've looked at these "Gecko" type drivers they sell to drive Bi/Uni polar
> motors at best half step for $150 and up, and all this is purely amateur
> hour stuff.
>
> Ridiculous! Seriously this seems really crazy to me. Why on earth would I
> drive several hundreds if not thousands of pound worth of machinery moving
> at high speeds with pulses from a parallel port and using DOS no less.
> When you can talk to an professional industrial grade indexer via serial
or
> device driver and run it under Windows or Linux if you must. These
indexers
> are very intelligent and handle all the I/O, Encoders, drivers, backlash,
> deadband, linked moves, curve interpolation, limit monitoring, and more.
>
> I just did a quick search for Compumotor products (my personal favorite)
and
> here what I found today;
>
> A pair of 50000 Microstep Stepper Drivers starting at $19 with $180 buy it
> now
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532426297
> or other microstepper drivers (Zetas 4 are great)
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7530904583
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7530594973
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7530907082
> Paired up with any S 57 or 83 series motor
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532121199 $25 (low
> torque)
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7531200682 $24 (low)
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7530594904 $10 (high
> 400oz)
> slap some $40 US Digital 2000 line encoders on these and it a closed loop
at
> 8000 ppr.
>
>
> Servo Drivers?
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532283428 $75
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7531003102 $23
> Pair it up with these motors;
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532283649 $45
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7531512855 $35
>
> I see PC-23 and 6000 series indexers for sale for a few hundred all the
> time.
>
> There's a 6K2 with an Expansion i/o module for $780 but that's a bit high.
>
> There are also TWO whole 4 axis system starting at $1000 with indexer,
> drivers, motors!
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7532416649
>
> Whew! Glad I got that off my chest... Guess the reaming is next :)
>
>
>
>
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