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Ultra-light and ultra-accurate portable coordinate measurement machine

  • US 10,274,298 B2
  • Filed: 10/18/2017
  • Issued: 04/30/2019
  • Est. Priority Date: 04/13/2017
  • Status: Active Grant
First Claim
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1. A portable coordinate measurement machine (CMM) comprising:

  • a manually-positionable articulated arm having first and second ends, the articulated arm including a plurality of arm segments and a plurality of rotary joints, the first end including a connector configured to connect to a measurement probe and the second end including a base;

    wherein at least one of the rotary joints includes;

    first and second bearings;

    a shaft that engages an inner diameter of the first bearing and an inner diameter of the second bearing, the shaft configured to rotate about an axis of rotation of the first bearing and the second bearing;

    a housing having at least one port that engages at least one of an outer diameter of the first bearing and an outer diameter of the second bearing;

    at least one transducer configured to output an angle signal corresponding to an angle of rotation of the shaft relative to the housing about the axis of rotation;

    a rotary damping mechanism configured to provide controlled damping of rotational movement of the shaft about the axis of rotation; and

    a circuit operably connected to the at least one transducer and configured to output a speed signal corresponding to the speed of the rotational movement of the shaft about the axis of rotation.

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