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精度规范的目的 CMMA—座标测量机制造业协会(Coordinate Measuring Machines Manufacturers Association)是座标测量机制造业的国际组织。除了促进座标测量机在世界上推广应用的主要目的外,这个协会也涉及到座标测量机有关知识的发展和传播。由于没有任何国际公认的精度定义标准和质量验收试验标准,促使CMMA发表这份精度规范。这一文件使得用户能以一种格式来鉴定座标测量机的性能,从而使用户能将一家供货厂商提供的产品和另一家的产品相比较。
Purpose of Precision Specification The CMMA Coordinate Measuring Machines Manufacturers Association is an international organization for CMM manufacturing. In addition to its main purpose of promoting CMM applications around the world, the association also involves the development and dissemination of knowledge about CMMs. The lack of any internationally accepted standard for definition of accuracy and quality acceptance testing has prompted CMMA to publish this specification. This document enables users to validate the performance of CMMs in a format that allows users to compare products offered by one supplier with those of another.