Way bearing arrangement for a horizontal arm coordinate...

Details Way bearing arrangement for a horizontal arm coordinate... Way bearing arrangement for a horizontal arm coordinate...

G - Physics

01

D

33/112, 308/1.2

G01D 11/02 (2006.01) G01B 5/008 (2006.01) G01B 7/28 (2006.01)

Patent

CA 2000494

Abstract WAY BEARING ARRANGEMENT FOR A HORIZONTAL ARM COORDINATE MEASURING MACHINE A bearing arrangement for a coordinate measuring machine having a horizontal probe arm assembly (16) extending to the front of the machine and supported for movement along X,Y, and Z orthogonal axes. The bearing arrangement comprised of opposing sets of supporting or guiding and preloading air bearings (48a,b; 46a,b; 66a,b; 64a,b; 76a,b; 78a,b) for the X carriage (40), the YZ carriage (17) (178a,b; 180a,b; 182a,b; 184a,b; 204a,b), and for the probe shaft (186) (188a,b; l90a,b; 192a,b; 194a,b). The air bearings each ride on way surfaces formed on the base (12) a column member 160, and the probe shaft (186) and are arranged to most efficiently distribute the load and minimize the effects of inaccuracies in the way surfaces, and make more efficient the accurate machining of the way surfaces.

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