Re: [CAD_CAM_EDM_DRO] motor size?

I would think that a 700 oz in stepper would be fine with your set up. I used one on a similar 13X40 retrofit.
usually the X axis isn't turning that fast.
I would estimate that the 700 oz in holding torque motor would provide about 500 oz in at about 40 rpm thus
500X6.28X5.1X2X.9/16 = 1801 lbs of force would give you plenty of power yet good speed
Dan Mauch
economical 3D scanner software and kits
low cost stepper and servo motors.
cases for Gecko drives
kits and assembled 3-4 axis drives
www.camtronics-cnc.com
www.seanet.com/~dmauch

----- Original Message -----
From: bdrmachine
To: CAD_CAM_EDM_DRO@yahoogroups.com
Sent: Wednesday, November 21, 2007 6:04 PM
Subject: [CAD_CAM_EDM_DRO] motor size?


I need some help on a lathe conversion that I started. The machine is a
14.5 by 40" manual lathe. I have a ballscrew with a 5mm pitch installed
in the cross feed. I currently plan on using a 2:1 timing belt
arrangement to couple the motor to the axis. Before I get to involved
with this I would like some input as to what size stepper motor I need?
I realize this will depend on several factors that I have not enclosed.
What I'm looking for would be successes others have had in similar
retrofits.

Thank
Brian





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