Patent ID: 6202316
Filing Date: 2001-03-20
Classification: G01B,Y10S

Abstract:
A coordinate measuring machine comprising:a) a support structure joined with a plurality of trusses, the support structure comprising a guideway, the guideway comprising:1. an elongate spaceframe comprising a metallic material; and2. a first stiffener having a first elongate bearing surface facing in a first direction and a second bearing surface disposed upon said elongate spaceframe, the first stiffener comprising a first fiber reinforced composite material; andb) a probe attached to a carriage that houses a first bearing, such that the first bearing engages the first bearing surface to support the carriage and allow the carriage to move along the guideway, wherein the elongate spaceframe and the first stiffener each have a coefficient of thermal expansion (CTE) less than or equal to 6.1.times.10.sup.-6 cm/cm/.degree. C. and a modulus of elasticity greater than 140 GPa in all directions.