Forword
This document is drafted in accordance with GB/T 1.1-2020 Guidelines for Standardization - Part 1: Structure and Drafting Rules of Standardization Documents.
This document is the first part of GB/T 18779 Geometrical Product Specifications (GPS) Measurement Inspection of Workpieces and Measuring Equipment. GB/T 18779 has issued the following parts:
Part 1: Judgment rules for qualified or unqualified verification according to specifications;
Part 2: Guide to the evaluation of measurement uncertainty in the calibration of GPS measurement equipment and product verification;
Part 3: Guidelines for reaching consensus on the expression of measurement uncertainty;
Part 4: Basis of functional limit and normative limit in decision rules;
Part 5: Test uncertainty of indicating measuring instruments;
Part 6: General rules for acceptance/rejection of instruments and workpieces.
This document replaces Part 1 of GB/T 18779.1-2002 Geometrical Product Specifications (GPS), Measurement Inspection of Workpieces and Measuring Equipment; The main technical changes are as follows, except for structural adjustment and editorial changes, compared with GB/T 18779.1-2002.
a) Changed the scope of the document (see Chapter 1, meaning 6 of the 2002 edition)
b) Deleted term:
Tolerance limit, tolerance, tolerance zone, maximum allowable error, gauge range, specification limit, upper specification limit, lower specification limit, measured, measurement result, nominal value, measurement uncertainty, standard uncertainty composite standard uncertainty, expanded uncertainty, inclusion factor, complete statement, qualified, qualified zone, unqualified, unqualified zone of measurement result (see 3.1~3.8, 3.10~3.22 of 2002 edition).
c) Added terms:
The acceptance probability limit, the default acceptance probability limit, the lower failure probability, the upper failure probability, the failure probability limit, the default failure probability limit receiving area, the default receiving area, the default rejection area, and the default rejection area (see 3.2~3.11).
d) The determination method has been changed, and the determination focus has been converted from the inclusion probability to the pass (or fail) probability (see 4.1
5.1)。
e) Replace the original default coverage factor k=2 with 95% of the default pass (or fail) probability, so as to ensure the judgment risk of pass judgment
Constant (see 4.2, 4.3, Chapter 4 of 2002 edition).
This document is equivalent to ISO 14253-1:2017 Geometrical Product Specifications (GPS) - Measurement and Inspection of Workpieces and Measuring Equipment - Part 1: Rules for Determining Conformity or Nonconformity in Verification according to Specifications.
Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume the responsibility of identifying the patent. This document is proposed and under the jurisdiction of the National Technical Committee for Standardization of Geometrical Product Specifications (SAC/TC 240).
Introduction
In order to reduce disputes between suppliers and customers in the acceptance process of workpieces and measuring equipment, reduce the cost of acceptance, improve the economic benefits of products, and better integrate with international trade rules, the acceptance strategy of workpieces and measuring equipment in China and the rules for determining whether they are qualified need to be studied and formulated urgently.
In order to adapt to China's reform and opening up situation and meet the needs of international trade, technology and economic exchanges, GB/T 18779 is equivalent to ISO 14253.
GB/T 18779 is a general standard for Geometrical Product Specifications (GPS) (see GB/T 20308), which affects the four links in the GPS standard matrix model link, namely, conformity and non conformity, measurement, measuring equipment and calibration.
GB/T 18779 is applicable to the basic rules of GPS given in GB/T 4249; Unless otherwise specified, the default decision rules given in this document apply to all GPS files.
GB/T 18779 mainly describes the acceptance strategy and acceptance judgment rules of tools and measuring equipment when measurement uncertainty is considered. For the convenience of readers, GB/T 18779 is divided into six parts. These six parts are both interrelated and independent, and together constitute the acceptance strategy and qualification determination rules of workpieces and measuring equipment.
Part 1: Judgment rules for qualified or unqualified verification according to specifications. The strategy of workpiece or measuring equipment qualification verification is given; gauge
The default judgment rule is set to consider the measurement uncertainty of the measured value and verify whether it is qualified according to the GPS specification of the workpiece or measuring equipment; According to the GPS specification, verify the possible handling conditions that can neither be determined as qualified nor unqualified—— Part 2: Guide to the evaluation of measurement uncertainty in GPS measurement, measurement equipment calibration and product verification. It is based on measurement
GPS Guide for Uncertainty Evaluation of Measurement (GUM); It provides the uncertainty management procedure (PUMA) and the practical method of measurement uncertainty evaluation, as well as the measurement uncertainty U. Meet the specified target uncertainty U, requirements (i.e. U:
Forword
Introduction
1 Scope
2 Normative References
3 Terms and definitions
4 Default Decision Rules
5 Qualified or unqualified according to the specification
6 Application in the relationship between suppliers and customers
Appendix A (informative) Relationship between this edition and the previous edition
Appendix B (Informative) Relationship with GPS Matrix Model
Bibliography
前言
本文件按照GB/T 1.1-2020《标准化工作导则第1部分:标准化文件的结构和起草规则》的规定起草。
本文件为GB/T 18779《产品几何技术规范(GPS)工件与测量设备的测量检验》的第1部分。GB/T 18779已经发布了以下部分:
第1部分:按规范验证合格或不合格的判定规则;
第2部分:GPS测量 测量设备校准和产品验证中的测量不确定度评估指南;
第3部分:关于测量不确定度表述达成共识的指南;
第4部分:判定规则中功能限与规范限的基础;
第5部分:指示式测量仪器的检验不确定度;
第6部分:仪器和工件接受/拒收的通用判定规则。
本文件代替GB/T 18779.1-2002产品几何量技术规范(GPS)工件与测量设备的测量检验﹑第1部分;按规范检验合格或不合格的判定规则》,与GB/T 18779.1-2002相比,除结构调整和编辑性改动外,主要技术变化如下。
a)更改了文件的范围(见第1章,2002年版的第1意六
b)删除了术语:
公差限、公差、公差区、最大允许误差,规.范、规范限、上规范限、下规范限,被测量,测量结果、公称值,测量不确定度,标准不确定度合成标准不确定度,扩展不确定度,包含因子,测量结果的完整表述、合格、合格区、不合格,不合格区(见2002年版的3.1~3.8,3.10~3.22)。
c)增加了术语:
合格概率限﹑默认合格概率限、下不合格概率、上不合格概率、不合格概率限,默认不合格概率限接收区、默认接收区、拒收区、默认拒收区(见3.2~3.11)。
d)更改了判定方法,判定的关注点由包含概率转换为合格(或不合格)概率(见4.1,2002年版的
5.1)。
e)以95%的默认合格(或不合格)概率替换原默认覆盖因子k=2,从而保证合格判定的判定风险
恒定(见4.2、4.3,2002年版的第4章)。
本文件等同采用ISO 14253-1:2017《产品几何技术规范(GPS)工件与测量设备的测量检验第1部分:按规范验证合格或不合格的判定规则》。
请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。本文件由全国产品几何技术规范标准化技术委员会(SAC/TC 240)提出并归口。
引言
为减少工件与测量设备在验收过程中出现供方与顾客的纠纷,降低验收的成本,提高产品的经济效益,与国际贸易规则更好的接轨,我国工件与测量设备的验收策略和验收合格与否的判定规则亟需研究制定。
为适应我国的改革开放形势和满足国际贸易,技术以及经济交流需要, GB/T 18779等同采用ISO 14253。
GB/T 18779是产品几何技术规范(GPS)通用标准(见GB/T 20308),影响GPS标准矩阵模型链环中的符合与不符合、测量、测量设备和校准四个链环。
GB/T 18779适用GB/T 4249中给出的GPS基本规则;除非另有说明,本文件给出的默认判定规则适用于所有GPS文件。
GB/T 18779主要阐述了考虑测量不确定度的情况下,工.件与测量设备的验收策略及合格与否的验收判定规则,为了方便读者使用,GB/T 18779分为6个部分编写。这6部分内容既相互关联又相互独立,共同构成工件与测量设备的验收策略和合格判定规则的内容。
第1部分:按规范验证合格或不合格的判定规则。给出了工件或测量设备合格验证的策略;规
定了考虑测得值的测量不确定度,按工件或测量设备的GPS规范验证是否合格的默认判定规则;按GPS规范验证可能出现的既不能判定合格也不能判定不合格的处理情况等内容。——第2部分:GPS测量,测量设备校准和产品验征中的测量不确定度评估指南。它是基于测量
不确定度表示指南(GUM)的GPS领斌测量不确定度评估指南;提供了不确定度管理程序(PUMA)和测量不确定度评估的实闲讼代方法,以及依据测量不确定度U。满足指定目标不确定度U，要求(即U:
GB/T 18779.1-2022 引用如下标准： |
GB/T 18779.1-2022被如下标准引用：
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