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  1. 13-01-2018 #6
    johnsattuk's Avatar
    Lives in Tamworth, United Kingdom.
    johnsattuk
    Last Activity: 28-09-2023 Has been a member for 9-10 years. Has a total post count of 235. Received thanks 20 times, giving thanks to others 37 times.
    Quote Originally Posted by Bally123 View Post
    Hi John.

    An electromagnetic brake certainly seems to resolve the back drive issue but pushes up cost and control complexity.

    andy
    I have Yaskawa sevo's on my mill with built in brake controlled by the driver. I also am building a router at the moment and using a servo with a brake. I also have Vexta stepper motors with built in brake controlled by the driver. They are industrial stuff but can be aquired relatively cheaply with plenty of Ebay searching.

    Gas struts can be quite a good solution, (need to get one with no built in damping ), c/balance weight can be a bit problematic finding room for it to travel in and also control any bouncing with fast movements. Both solutions are IMO second choice solutions.Click image for larger version.  Name: PICT0421.JPG  Views: 397  Size: 157.5 KB  ID: 23588Click image for larger version.  Name: PICT0422.JPG  Views: 393  Size: 148.1 KB  ID: 23586Click image for larger version.  Name: PICT0420.JPG  Views: 387  Size: 125.6 KB  ID: 23587
    Last edited by johnsattuk; 13-01-2018 at 12:31 PM.
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