Geometrical instruments – Gauge – Coordinate movable probe or machine
Patent
1993-01-29
1994-08-23
Will, Thomas B.
Geometrical instruments
Gauge
Coordinate movable probe or machine
33 1M, G01B 503
Patent
active
053395310
ABSTRACT:
A coordinate measuring machine wherein an X carriage and a Y carriage are rendered light in weight, and the center of gravity of the Y carriage including the X carriage and a Z carriage is disposed close to a driving source, to thereby smoothen the movements of the X carriage and the Y carriage. Driving roller portions and a pair of distributing rollers are provided on the X carriage. A first and second rollers are provided at one end portion and the other end portion of an X-axis guide, so that the wire distributed by the distributing rollers can be guided around the first and second rollers. Then, a third roller is rotatably provided at one end portion of the X-axis guide, so that the wire guided around the second roller can be guided therearound. Further, the Z carriage is connected to one end portion and the other end portion of the wire guided around the driving roller portions and a balance weight is suspended from the wire guided around the first and third rollers to thereby offset the gravity of the Z carriage. With these arrangements, the wire for suspending the Z carriage is disposed along the X-axis guide, so that the Z column can be dispensed with.
REFERENCES:
patent: 3774311 (1973-11-01), Stemple
patent: 4007544 (1977-02-01), Kirby et al.
patent: 4651426 (1987-03-01), Band et al.
patent: 4805314 (1989-02-01), Hayashi et al.
patent: 4924598 (1990-05-01), Gruhler
patent: 4964221 (1990-10-01), Breyer et al.
patent: 5072522 (1991-12-01), Stott et al.
Tokyo Seimitsu Co. Ltd.
Will Thomas B.
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