Testing device and method of determining the uncertainty of measurement of coordinate-measuring instruments
First Claim
1. A testing device for determining the uncertainty of measurement of a coordinate-measuring instrument having a work-contacting measurement probe, comprising a support (1) adapted for placement on the measurement table (40) of the coordinate-measuring instrument (13), said support containing a plurality of clamping elements (3a-c, 33a-c) which are adapted to receive a test standard in different orientations within the measurement range of the coordinate-measuring machine, characterized by the fact that the test standard is a ball rod consisting of two balls (11, 12) fastened to the ends of an elongate body (22), and that one end of the ball rod is mounted on the support (1) in a pivot/swivel bearing (5/16) which permits measuring-probe access to contact the ball (11) at said end.
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Abstract
A testing device for use in determining the uncertainty of measurement of a coordinate-measuring instrument comprises a support which can be placed on the measurement table of the coordinate-measuring instrument; the support contains a plurality of locating fastening elements which receive a test standard in different orientations within the measurement range of the coordinate-measuring instrument. The test standard is a ball rod which has a ball fixed to the opposite ends of an elongate body. One end of the ball rod is mounted to the support in a pivot/swivel bearing that is so structured as to permit free measuring-probe access to contact the ball at the thus-mounted end of the ball rod.
39 Citations
19 Claims
- 1. A testing device for determining the uncertainty of measurement of a coordinate-measuring instrument having a work-contacting measurement probe, comprising a support (1) adapted for placement on the measurement table (40) of the coordinate-measuring instrument (13), said support containing a plurality of clamping elements (3a-c, 33a-c) which are adapted to receive a test standard in different orientations within the measurement range of the coordinate-measuring machine, characterized by the fact that the test standard is a ball rod consisting of two balls (11, 12) fastened to the ends of an elongate body (22), and that one end of the ball rod is mounted on the support (1) in a pivot/swivel bearing (5/16) which permits measuring-probe access to contact the ball (11) at said end.
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12. In a testing device for performing ball-rod measurements on a coordinate-measuring instrument having a measurement table and a probe holder for a work-contacting probe,
a test body (2) in the form of a ball rod having two balls (11, 12) each of which is fixed to one of the respective ends of an elongate body (22), a support (1) adapted for placement on the measurement table of the coordinate-measuring instrument, a plurality of clamping elements (3a-c, 33a-c) on said support (1) to receive said test body in different selected orientations in space, and a pivot/swivel joint (5/16) on said support (1), said joint being configured for inserted reception of one end of said test body.
Specification