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Author Topic: How could I calculate the step per revolution?  (Read 5667 times)

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Offline Robhi

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How could I calculate the step per revolution?
« on: April 17, 2013, 12:07:07 PM »
Hello every body.

I have servo motor for my future cnc. I have the following kit servo motor:-
  NEMA 34 Servo Motors 3 Axis CNC Kit:

NEMA34 Servo Motors 3 Axis CNC Kit(115VAC,230VAC):

3 PCS Geckodriver G320X, 80V/20A

3 PCS KL34-180-90 (NEMA 34) Dual Shaft, 1125 oz-in Peak 90V/40A

3PCS US Digital: E5-500-250-N-S-E-G-2 Individually
Packaged Shaft-Mount Optical 1/4" diameter shaft.
Molded mounting ears for 1.812" bolt circle (with
Installation Tool) for NEMA 34 Servo Motor

3PCS CA-FC5-SH-NC-6 Connector for 500 line or
250 line Encoder: 5-pin polarized conductor
shielded round 24 AWG cable. Standard
length is 6FT.

1 PCS KL-7220, 72V, 20A, Unregulated Power Supply, 110V/220V

1 pcs 5V Power Supply, 110V/220V

1 PCS C10 Breakout Board for 6 axis ( E-Stop or Limit Switch can be
wired)
I have a ball screw of 10mm pitch , with a pulley of 60 teeth on the screw. the second pulley which is mounted on the servo motor is 20 teeth, and the belt is T5. I also have Gecko 320x...

How could I calculate the step per revolution please?

I do not know if I give you all the information that you need.

thanks for you in advance for your help.

my unit is in mm.

thanks

Robhi

Offline Chaoticone

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Offline Robhi

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Re: How could I calculate the step per revolution?
« Reply #2 on: April 17, 2013, 12:54:14 PM »
Hello Brett,

thanks for your reply, but I only found a stepper calculator, and nothing about servo motors,
I do not know how to do it with servo motor.
Robhi

Offline Chaoticone

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Re: How could I calculate the step per revolution?
« Reply #3 on: April 17, 2013, 01:01:45 PM »
What is the line count of your encoders?

Brett
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Offline Robhi

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Re: How could I calculate the step per revolution?
« Reply #4 on: April 17, 2013, 01:04:57 PM »
500 lines

Robhi

Offline Chaoticone

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Re: How could I calculate the step per revolution?
« Reply #5 on: April 17, 2013, 01:15:52 PM »
OK your steps per rev on your motor will be 2000 then I'm guessing. (500 x 4 for quadrature)

Brett
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Offline Robhi

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Re: How could I calculate the step per revolution?
« Reply #6 on: April 17, 2013, 01:22:07 PM »
ok I will try it later and let you know, thanks a lot for your great help.

Robhi

Offline Chaoticone

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Re: How could I calculate the step per revolution?
« Reply #7 on: April 17, 2013, 01:28:52 PM »
I get 6000 steps per mm

Brett
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Offline Chaoticone

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Re: How could I calculate the step per revolution?
« Reply #8 on: April 17, 2013, 01:33:51 PM »
Nope, I think 600 steps per.  I just put 10 microsteps out of habit for geckos.

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

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Offline Robhi

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Re: How could I calculate the step per revolution?
« Reply #9 on: April 18, 2013, 07:24:42 AM »
Ok Brett, thanks too much, i will try it, hoping it will be ok...

thanks again
Robhi