Lathe Conversion, PM1228 to CNC - Page 3


Page 3 of 3 FirstFirst 123
Results 41 to 44 of 44

Thread: Lathe Conversion, PM1228 to CNC

  1. #41
    Member
    Join Date
    Aug 2012
    Location
    USA
    Posts
    23
    Downloads
    0
    Uploads
    0

    Default Re: Lathe Conversion, PM1228 to CNC

    Very nice CNC conversion.

    On the BLDC motor, I suspect the controller is the main problem. Before changing the motor it might make sense to try a quality BLDC controller. I suspect the motor is capable but the electronics aren't doing a great job with it.



  2. #42
    Member
    Join Date
    Mar 2017
    Location
    United States
    Posts
    395
    Downloads
    0
    Uploads
    0

    Default Re: Lathe Conversion, PM1228 to CNC

    Quote Originally Posted by AlanB243 View Post
    Very nice CNC conversion.

    On the BLDC motor, I suspect the controller is the main problem. Before changing the motor it might make sense to try a quality BLDC controller. I suspect the motor is capable but the electronics aren't doing a great job with it.

    I have looked high and low for a BLDC controller that will work better. I had a thread on it here. https://www.cnczone.com/forums/spind...78956-cnc.html I actually bought a controller from Anaheim Automation (very nice). The only problem was that I lost some RPM because the controller output 170VDC and the motor wanted 230VDC.

    After giving up on that combination, I went back to the Chinesium controller that came with the lathe and got it to work with an interface card. See this thread. https://www.cnczone.com/forums/bench...-sx4-bldc.html This gave me the voltage I needed but the rpm and stability is just not there.

    Any help or suggestions you can provide would be appreciated. Thanks.



  3. #43
    Member
    Join Date
    Aug 2012
    Location
    USA
    Posts
    23
    Downloads
    0
    Uploads
    0

    Default Re: Lathe Conversion, PM1228 to CNC

    Sorry I don't have any specific recommendations, our experience was primarily in industrial and electric bike controllers. There is a wide range of performance and features, and many are well below average. BLDC motors are current driven devices, the voltage determines acceleration and maximum speed, current delivers torque. The really capable controllers can generate speeds higher than the voltage would indicate at reduced torque by timing adjustments. Good luck with your project. I'm considering purchasing one of these lathes, if I come across a better controller I'll check back, but most of my applications are not too demanding.

    Since you got a better controller already, is there a motor that matches the controller that is suitable? I should go look at your other thread, will do that now and stop posting in this thread.



  4. #44
    Member
    Join Date
    Mar 2017
    Location
    United States
    Posts
    395
    Downloads
    0
    Uploads
    0

    Default Re: Lathe Conversion, PM1228 to CNC

    I made another modification to the lathe. I replaced the discrete interface cards with a universal BOB for the ESS controller. Here is the thread for the new BOB.
    https://www.cnczone.com/forums/gener...ml#post2507344



Page 3 of 3 FirstFirst 123

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
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

Lathe Conversion, PM1228 to CNC

Lathe Conversion, PM1228 to CNC