Base assembly for coordinate measuring machine

Details Base assembly for coordinate measuring machine Base assembly for coordinate measuring machine

1987-10-06

1988-08-16

Martin, Jr., William D.

Geometrical instruments

Gauge

Coordinate movable probe or machine

33 1M, 33567, 33125T, G01B 503, B23B 3500

Patent

active

047634200

ABSTRACT:
A base assembly for a machine tool includes a support arrangement between a metal base and a granite worktable which eliminates distortion caused by differential thermal expansion and contraction and which isolates the base from deformation due to the weight of a workpiece. The support arrangement preferably includes three spaced-apart blocks, each with a V-groove track, attached to the bottom of the granite worktable. The axes of the V-groove tracks intersect at a common point. The metal base includes three spherical projections located for engagement in each of the V-groove tracks. The support arrangement permits the granite worktable and the base to expand, contract and distort separately, while providing vertical support and lateral and rotational restraint. Several configurations of tracks and projections are disclosed.

REFERENCES:
patent: 3774311 (1973-11-01), Stemple
patent: 3813789 (1974-06-01), Shelton
patent: 4255862 (1981-03-01), Nakamura
patent: 4360974 (1982-11-01), de Cuissart
patent: 4594791 (1986-06-01), Brandstetter
patent: 4630374 (1986-12-01), Raleigh
patent: 4682418 (1987-07-01), Tuss et al.

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