Geometrical instruments – Gauge – Coordinate movable probe or machine
Patent
1996-05-14
1998-06-02
Will, Thomas B.
Geometrical instruments
Gauge
Coordinate movable probe or machine
33 1MP, G01B 5008
Patent
active
057584290
ABSTRACT:
A positioning method and apparatus is disclosed in the form of a coordinate measurement machine for transmitting movement in three degrees of freedom, where two degrees of freedom are achieved by translational motion and the third degree of freedom is achieved by rotational motion. The coordinate measurement machine includes a base plate mounted on top of a base support, a pair of carriages rotatably mounted around base plate and supporting a bridge assembly. The bridge assembly supports a saddle assembly which suitably mounts a z-axis beam therein. Mounted to the end of the z-axis beam is a probe for measuring and inspecting the workpiece. The z-axis beam moves in an x-direction along an x-axis beam and in a z-direction within the saddle while the bridge assembly rotates about a c-axis. Reader heads mounted in the carriages electronically read a c-axis scale mounted about the base plate. A drive system including a belt and pulleys located in each carriage frictionally rotate the bridge assembly and carriages about the base plate.
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An American National Standard--ANSI/ASME B89.1 12M-1985, pp. 9-13.
Epstein Jack
Farzan Farshad
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