产品几何量技术规范(GPS).一般概念.第1部分:几何规范和检定模型

[中文适用范围]： 本部分 ISO 17450 提供了几何产品规范（GPS）的模型和验证模型，并定义了相应的概念。它还解释了与该模型相关的概念的数学基础，并定义了工件几何特征的一般术语。本部分 ISO 17450 定义了 GPS 系统的基本概念，旨在： - 提供用于设计、制造和验证的无歧义 GPS 语言； - 识别特征、特性和规则，为规范提供基础； - 提供完整的符号语言以指示 GPS 规范； - 通过定义默认规则提供简化的符号； - 提供一致的验证规则。 [外文原描述]： ISO 17450-1:2011 provides a model for geometrical specification and verification and defines the corresponding concepts. It also explains the mathematical basis of the concepts associated with the model and defines general terms for geometrical features of workpieces. ISO 17450-1:2011 defines the fundamental concepts for the GPS system in order to provide nonambiguous GPS language to be used in design, manufacturing and verification, to identify features, characteristics and rules to provide the basis for specifications, to provide a complete symbology language to indicate GPS specifications, to provide simplified symbology by defining default rules, and to provide consistent rules for verification.