Double cone stylus, touch probe, and method of calibrating double cone stylus
First Claim
1. A method of calibrating a double cone stylus included in at least one of a coordinate measuring machine and a contour measuring machine including a touch probe having the double cone stylus attached to a tip end thereof, the method comprising, when dimensions of a stylus tip of the double cone stylus are calibrated:
- disposing a master ball with a calibration value in the at least one of the coordinate measuring machine and the contour measuring machine;
performing touch measurement on the master ball using the touch probe to acquire a center position and a radius of the master ball;
computing a radius of the stylus tip in a horizontal direction;
performing touch measurement to determine a position of an apex of the master ball using the touch probe to acquire a height of the apex of the master ball; and
computing a radius of the stylus tip in a height direction.
1 Assignment
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Accused Products
Abstract
A double cone stylus includes a shank and a double cone-shaped tip attached to the tip end of the shank, the double cone-shaped tip being a rotationally symmetric body obtained by rotating a triangle having a base extending along the shank around the shank as the symmetric rotation axis. The double cone stylus allows the shape of an inner wall surface of a measurement object with the inner wall surface retracted from an upper reference plane to be measured from above.
16 Citations
6 Claims
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1. A method of calibrating a double cone stylus included in at least one of a coordinate measuring machine and a contour measuring machine including a touch probe having the double cone stylus attached to a tip end thereof, the method comprising, when dimensions of a stylus tip of the double cone stylus are calibrated:
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disposing a master ball with a calibration value in the at least one of the coordinate measuring machine and the contour measuring machine; performing touch measurement on the master ball using the touch probe to acquire a center position and a radius of the master ball; computing a radius of the stylus tip in a horizontal direction; performing touch measurement to determine a position of an apex of the master ball using the touch probe to acquire a height of the apex of the master ball; and computing a radius of the stylus tip in a height direction. - View Dependent Claims (2)
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3. A method of calibrating a double cone stylus included in at least one of a coordinate measuring machine and a contour measuring machine including a vision probe and a touch probe having the double cone stylus attached to a tip end thereof, the method comprising, when dimensions of a stylus tip of the double cone stylus and an offset between the touch probe and the vision probe are calibrated:
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disposing a master ball with a calibration value and a ring gauge on the at least one of the coordinate measuring machine and the contour measuring machine; and performing measurement sequentially on the master ball and the ring gauge using the touch probe and the vision probe to calibrate the dimensions of the stylus tip and the offset between the touch probe and the vision probe. - View Dependent Claims (4, 5, 6)
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Specification