554,323 active members*
3,325 visitors online*
Register for free
Login
Results 1 to 4 of 4
  1. #1

    Join Date
    Jul 2020
    Posts
    1

    DDCS V3.1 pulses to mm HELP!

    Trying to setup the correct movements in the DDCS V3.1 Offline controller and I've gotten myself so lost and confused at this point and I could really use some help!

    All 3 drivers are set to 4000 pulses

    My X axis is a rack and pinion setup that's got a reduction of 3.2:1

    My Y and Z axis are both on 1610 Ballscrews.

    I tried searching for a calculator online of some sort to try and figure all of this out but haven't found anything that makes sense.

  2. #2

    Re: DDCS V3.1 pulses to mm HELP!

    Quote Originally Posted by Dgee View Post
    Trying to setup the correct movements in the DDCS V3.1 Offline controller and I've gotten myself so lost and confused at this point and I could really use some help!

    All 3 drivers are set to 4000 pulses

    My X axis is a rack and pinion setup that's got a reduction of 3.2:1

    My Y and Z axis are both on 1610 Ballscrews.

    I tried searching for a calculator online of some sort to try and figure all of this out but haven't found anything that makes sense.
    Link To Calibrator: https://weitling.info/calibrator/#!/S... Select Milling hope this helps

  3. #3

    Join Date
    Jun 2021
    Posts
    67

    Re: DDCS V3.1 pulses to mm HELP!

    What is the diameter of your pinion?
    The following is from AvidCNC, and is based on their 1" (2.54 cm) pinion:

    "MACH Settings for R&P:
    The R&P system is based on a pinion with a 1" pitch circle. The total linear distance traveled per revolution of the pinion is thus 3.14159". With the 3.2:1 reduction, this means that the distance traveled per motor revolution is 3.14159 / 3.2, or 0.9817". If you have a stepper with 200 steps per revolution, this means you have 200 / 0.9817" = 203.718 steps per inch, or 0.004908" per step. With 10x micro-stepping , you would have 2037.18 steps per inch, or 0.0004908" per step."

    You would just need to convert inch to mm.

    For the Y and Z, I believe it is 4000 pulses/steps per revolution, with the ball screw pitch of 10 mm, that would be 4000/10 = 400 pulses per mm. This would give a theoretical resolution of 0.0025mm per pulse/step, which from what I understand matches the limits of the typical stepper motor (+/- 0.0025mm/step).

Similar Threads

  1. 7 by 7 Dropping pulses or ?
    By EWhite in forum Zen Toolworks
    Replies: 9
    Last Post: 03-27-2015, 10:03 PM
  2. driver pulses is low can you know why
    By namso in forum Mach Software (ArtSoft software)
    Replies: 3
    Last Post: 10-18-2010, 07:26 PM
  3. Max pulses and IPM
    By margni74 in forum LinuxCNC (formerly EMC2)
    Replies: 7
    Last Post: 12-05-2008, 06:11 PM
  4. Step Pulses per second?
    By thielert in forum TurboCNC
    Replies: 2
    Last Post: 11-06-2003, 07:35 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •