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  • How design a multi pulley & belt system that ensures positional accuracy at end?

    Discussion in 'The main mechanical design forum' started by Alyan, Feb 25, 2019.

    1. Alyan

      Alyan New Member

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      How design a multi pulley & belt system that ensures positional accuracy at end?

      I'm designing a SCARA robot. All the servo motors will be placed at base and driving force is transferred thorough pulley mechanism. Each joints are connected by harmonic drive.

      But I'm worried about positional accuracy at end because of the accumulated backlash of timing belt. Could you give me a tip for this problem?
       
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    3. Dana

      Dana Well-Known Member

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      If the harmonic drives are at the joints, increasing the reduction ratio (so the belt moves less for a given amount of joint movement), errors due to belt backlash will be proportionally reduced.
       
    4. Mark_Armstrong

      Mark_Armstrong Active Member

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