I need to calculate Step per for ROTARY AXIS

[Ivano]

Hi everyone, I need to calculate step per for the 4th axis but I`m very confused with all this numbers
How can I do that this is the information that I have I would appreciate if you include step by step to learn how to calculate this

DC Servo Motor Model DCM50207D-1000 (they say that 1000 are 1000 lines)
V 30.3

N.M 0.35

r/m : 2900

TWO PULLEYS

Small Pulley Diameter 31.4 - 20 Teeh on shaft of the motor

large Pulley Diameter 94 - 60 Teeh on shaft of the Chuck

I would appreciate all your help guys and have a wonderful 2018

Ivano

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[ger21]

1000 *3 = 1000
But it may be 4000*3 = 12000

[TomKerekes]

Hi Ivano,

It would be helpful to know what kind of system you have and what software you are using.

But most rotary axes use units of degrees so the answer might be:

1000 lines/rev x (4 counts/line) x 3 x (1rev/360degrees) = 33.33333333 counts/degree

You might just try a number and if it doesn't work measure the factor you are off by and divide the number by that factor.

HTH
Regards

[ger21]

Oops, I forgot to divide by360°.