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Multi-axis articulatable robot having a weld gun with inverted roller screw actuator

  • US 6,787,729 B2
  • Filed: 10/21/2002
  • Issued: 09/07/2004
  • Est. Priority Date: 01/23/2001
  • Status: Expired due to Term
First Claim
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1. An apparatus for performing a welding operation on a workpiece comprising:

  • a robot having an arm with a plurality of axes of movement;

    a robot controller for moving the arm along a predetermined path;

    a pair of opposing arms, at least one arm movable relative to the opposing arm to apply pressure to the workpiece during a welding operation; and

    an inverted roller screw linear actuator for moving the at least one arm relative to the opposing arm in response to the robot controller as an additional axis of movement.

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