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CMM arm with exoskeleton

  • US 7,591,078 B2
  • Filed: 06/09/2008
  • Issued: 09/22/2009
  • Est. Priority Date: 04/28/2003
  • Status: Active Grant
First Claim
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1. An apparatus for measurement of an object comprising:

  • (a) a robot CMM Arm comprising;

    a movable member having a base end, an opposing probe end and three or more segments separated by two or more rotational axes of movement between said base end and said probe end wherein at least two of the said rotational axes of movement are not parallel;

    a continuous movable position reporting device having a base end, an opposing probe end and three or more stiff segments connected in tandem by mechanical joints separated by two or more rotational axes of movement between said base end and said probe end wherein at least two of the said rotational axes of movement are not parallel; and

    a transmission in contact with both said movable member and said movable position reporting device, wherein the contact of said transmission with said movable member is located anywhere between said probe end and the rotational axis of movement closest to said base end;

    such that movement of said movable member causes movement of said movable position reporting device;

    wherein said transmission comprises a plurality of discrete transmissions and at least one of said discrete transmissions is not rigid; and

    (b) a movable structure configured to translate and/or orientate the robot CMM Arm, wherein the robot CMM Arm is mounted on the movable structure, and/or(c) an object displacing means configured to translate and/or orientate the object being measured.

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