Automation NTH has developed a custom-designed Vision Guided Robotic Wire Insertion Machine, a precision solution that can control movement with less than 0.001 (25 µm) tolerance in all axes. The machine was designed to address the tight-tolerance assembly of two common medical device sub-components: stylets and cannulas. The process requires accuracy of ± 21 µm, angular tolerance of 1.5°, and robot movements with ± 5 µm accuracy. The system uses a Selective Compliance Assembly Robot Arm 4 (SCARA 4) axis robot and two tabletop-mounted servo motors to handle angle variability in the stylets. The robotic gripper picks a cannula from a nest and moves it to an approach position, presenting it to inspection cameras that record and measure offsets.
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