RE: [CAD_CAM_EDM_DRO] How do you figure IPM?

Think of it this way. How many turns would the motor have to turn to
move the axis 1" in one minute.Just multiply the leadscrew RPM times the
pitch to get IPM.
For example 120 RPM X .050 pitch (20 TPI)(to find pitch take the number
of threads per inch and divide it into 1" for the pitch or 1/20=.05") to
get IPM. It this case it is 6 IPM
Dan
-----Original Message-----
From: woodknack [mailto:wjdupont@...]
Sent: Friday, December 21, 2001 4:25 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] How do you figure IPM?

I have stepper motors that say 200 step per rev. top speed is 24,000
pulses per minute which equals 120 rpm. My question is how do I
figure IPM? Im going to use 1/4-20 threaded rod. So I figure
20x200=4000 step per inch. So heres where im lost I need to the
formula to figure this out. ( I'm not a math wiz as you can all tell
by now! LOL) Can anyone simplify this for me? I'm sure its simple.
Let me know if you need more info...


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