Apparatus and method for calibrating a probe assembly of a measuring machine
First Claim
Patent Images
1. A measuring machine comprising:
- a frame;
a probe assembly movably coupled to said frame, said probe assembly having a probe tip; and
,a calibration object coupled to said frame in fixed relation to said probe assembly to move therewith, with said calibration object being adapted to be probed by said probe tip for calibrating said probe assembly.
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Abstract
A precision measuring machine, such as a coordinate measuring machine, includes a probe assembly fixed to a movable member of the machine. The probe assembly includes a probe tip. A calibration object is detachably secured to the movable member in fixed relation to the probe assembly. The probe assembly articulates into a position such that the calibration object may be probed by the probe tip to recalibrate the probe assembly.
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Citations
56 Claims
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1. A measuring machine comprising:
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a frame; a probe assembly movably coupled to said frame, said probe assembly having a probe tip; and
,a calibration object coupled to said frame in fixed relation to said probe assembly to move therewith, with said calibration object being adapted to be probed by said probe tip for calibrating said probe assembly.
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2. A measuring machine comprising:
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a frame defining a measurement volume; a movable member movably attached to said frame; a probe assembly attached to said movable member for probing measurements of a workpiece placed in said measurement volume, said probe assembly having a probe tip; and
,a calibration object detachably secured to said movable member in fixed relation to said probe assembly, with said calibration object being adapted to be probed by said probe tip for calibrating said probe assembly. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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- 24. A calibration surface for calibrating a probe assembly of a measuring machine, the probe assembly being mounted on a movable arm of the machine and having a probe tip, with said calibration surface being positioned on the movable arm in fixed relation to the probe assembly.
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32. A method of calibrating a probe assembly of a measuring machine, the measuring machine having a frame, a movable arm mounted to the frame, and the probe assembly fixed to the movable arm, the probe assembly having a probe tip, with said method comprising the steps of:
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coupling a calibration object to the movable arm in fixed relation to the probe assembly; probing said calibration object with the probe tip, to obtain a measurement; comparing said measurement to a stored measurement; and
,calibrating the probe assembly based on said comparison. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A coordinate measuring machine comprising:
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a frame defining a measurement volume; a movable member movably attached to said frame; a probe assembly attached to said movable member for probing measurements of a workpiece placed in said measurement volume, said probe assembly having a probe tip; a calibration object detachably secured to said movable member to move therewith and being in fixed relation to said probe assembly, with said calibration object defining a surface having a predetermined geometric form, with said probe assembly being adapted to articulate relative to said movable member about at least two axes such that said surface of said calibration object may be probed by said probe tip; and
,a computer for causing said machine to enter a recalibration mode based a comparison between a sensed condition and a predetermined threshold and further causing said probe assembly to articulate. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification