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### Author Topic: stepper motor dro says 2 inch but actual distance traveled was 3 inch how to cac  (Read 916 times)

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#### gorf23

• 165
##### stepper motor dro says 2 inch but actual distance traveled was 3 inch how to cac
« on: July 30, 2017, 10:22:09 AM »
if the stepper motor dro says 2 inch but actual distance traveled was 3 inch  is the a formula
how to caculate new steps as per real distance traveled.. Sorry but my math isn't top notch..

Thanks gary

#### ger21

• 6,293
##### Re: stepper motor dro says 2 inch but actual distance traveled was 3 inch how to cac
« Reply #1 on: July 30, 2017, 12:53:19 PM »
Gerry

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#### gorf23

• 165
##### Re: stepper motor dro says 2 inch but actual distance traveled was 3 inch how to cac
« Reply #2 on: July 30, 2017, 05:56:08 PM »
so if I am understanding this correct it should be like
DistanceTravled  = 3  Steps unit = 1800
DroDistance  = 2
x = DistanceTravled * Steps unit
new steps unit = DroDistance  / x

Thanks gary

#### mark4

• 167
##### Re: stepper motor dro says 2 inch but actual distance traveled was 3 inch how to cac
« Reply #3 on: August 06, 2017, 12:13:58 AM »
hi there are a few ways to do this. the best and most accurate is the way in the manual complete calculation ie ball screw pulleys motor ect then check with a Gage block or dial indicator. you could just plug in a different number up or down until 1" on dro = 1" traveled this isnt the most accurate but depending upon what machine you are running i am sure it has been done that way before.
mark