GB/T 24630.1-2024 English PDFUS$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 24630.1-2024: Geometrical product specifications(GPS) - Flatness - Part 1: Vocabulary and parameters of flatness Status: Valid GB/T 24630.1: Historical versions
Basic dataStandard ID: GB/T 24630.1-2024 (GB/T24630.1-2024)Description (Translated English): Geometrical product specifications(GPS) - Flatness - Part 1: Vocabulary and parameters of flatness Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J04 Classification of International Standard: 17.040.20; 01.040.17 Word Count Estimation: 18,130 Date of Issue: 2024-09-29 Date of Implementation: 2024-09-29 Older Standard (superseded by this standard): GB/T 24630.1-2009 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 24630.1-2024: Geometrical product specifications(GPS) - Flatness - Part 1: Vocabulary and parameters of flatness---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Geometrical product specifications(GPS) - Flatness - Part 1.Vocabulary and parameters of flatness Geometric Product Specification (GPS) Flatness Part 1.Vocabulary and parameters Geometrical product specifications (GPS)-Flatness- Part 1：Vocabulary and parameters of flatness (ISO 12781-1.2011, MOD) ICS 17.040.20;01.040.17 CCS J 04 National Standard of the People's Republic of China Replaces GB/T 24630.1-2009 Released on 2024-09-29 2024-09-29 implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface ... Ⅲ Introduction Ⅳ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions ... 1 3.1 Basic terminology 1 3.2 Terms related to surfaces 1 3.3 Terminology related to reference planes 3 3.4 Terms related to parameters 4 4 Straightness deviation ... 5 Appendix A (Informative) Mathematical definition of nominal component flatness tolerance ... 6 Appendix B (Informative) Comparison table of terms, parameters and abbreviations ... 7 Appendix C (Informative) Relationship with GPS Matrix Model ... 9 C.1 Overview 9 C.2 Information about the standard and its use 9 C.3 Position in the GPS matrix model 9 C.4 Related standards 9 References ... 10ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is Part 1 of GB/T 24630 "Geometrical Specification for Products (GPS) Flatness". GB/T 24630 has been issued. The following parts were published. Part 1.Vocabulary and parameters;- Part 2.Specification of Operation Sets. - This document replaces GB/T 24630.1-2009 "Geometrical Product Specification (GPS) Flatness Part 1.Vocabulary and References" Compared with GB/T 24630.1-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows. The scope statement has been changed (see Chapter 1, Chapter 1 of the.2009 edition); a) The introduction to terms and definitions has been changed (see Chapter 3, Chapter 3 of the.2009 edition); b) The term and definition of “actual surface of workpiece” have been deleted (see 3.2.1 of the.2009 edition); c) The term and definition of “straightness profile” have been deleted (see 3.2.5 of the.2009 edition); d) The terms related to filter functions have been deleted (see 3.4 of the.2009 edition). e) This document is modified to adopt ISO 12781﹘1.2011 "Geometrical Product Specifications (GPS) Flatness Part 1.Vocabulary and parameter". The technical differences between this document and ISO 12781﹘1.2011 and their reasons are as follows. ISO 14660﹘1 and ISO 14660﹘2 (see Chapter 3) have been deleted to adapt to the current situation that the standards have been abolished. - The following editorial changes were made to this document. Add a note to 3.1.1 to introduce Appendix A; - Deleted ISO 14660﹘1 in the note of 3.2.1; - Add a note to 3.3.1.1 to introduce Appendix B. - Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Product Geometry Technical Specifications (SAC/TC 240). This document was drafted by. Zhejiang University, Zhongyuan University of Technology, Beijing Great Wall Metrology and Testing Technology Research Institute of China Aviation Industry Corporation, Zhengzhou University, Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, China Machinery Productivity Promotion Center Co., Ltd., Yantai Nanshan University, Huazhong University of Science and Technology, China University of Metrology, Harbin Institute of Technology, China Science (Anhui) Smart Health Innovation Research Institute Co., Ltd., Shanghai University College of Engineering, Chengdu Aircraft Design and Research Institute of Aviation Industry Corporation of China, and China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd. The main drafters of this document are. Cao Yanlong, Zhao Zexiang, Sun Yujiu, Zheng Peng, Zhao Qijian, Zhang Zongzheng, Zhu Yue, Li Dongxing, Lu Wenlong, Kong Ming, Huang Jingzhi, Yang Xianjun, Chen Yanyan, Wei Qingyue, Dong Jiang. This document was first published in.2009 and this is the first revision.IntroductionFlatness is one of the common shape tolerances in product geometry specifications and is also one of the key indicators for evaluating product geometry accuracy. It is one of the essential technical elements in the modern production process. Flatness is the most basic item in geometric error and is very important for ensuring zero The precise positioning and matching of components plays an important role in improving the accuracy and reliability of products and optimizing the manufacturing process. The precision specification can not only reduce the errors and losses in the manufacturing process, but also significantly reduce the failure rate of the product and extend its service life, making the product With the development of digital measurement technology and product geometry specifications, the relevant definitions in the original standard are different from the current national The GPS standard is not commensurate, and the technical requirements lag behind the current production needs, and can no longer effectively regulate and guide the market production status. Standards can better regulate and guide product geometric elements, provide technical support for enterprises in the design, manufacturing, inspection and other processes, and guide my country's high The development of high-end equipment manufacturing industry. GB/T 24630 aims to specify the flatness specification of a single component and consists of two parts. Part 1.Vocabulary and parameters. The purpose is to define the terms and concepts related to the flatness of single components. Part 2.Set of specification operations. The purpose is to define a complete set of specification operations for the flatness of a single component. The flatness specification must specify the set of specification operations to ensure that they are unique, otherwise it will lead to ambiguity in the interpretation of the specification (see ISO 17450﹘2). For example, filtering is necessary for data extraction operations, and when extracting data, additional filtering may be used, or Additional filtering may be mean line filtering (Gaussian filtering, spline filtering, wavelet filtering, etc.) or nonlinear filtering (such as morphological filtering). Wave), the filter type affects the definition of cylindricality and the set of specification operations, so it needs to be clearly stated. This document defines the terms and concepts required for the set of single component flatness specification operations (as defined in ISO 12781﹘2) and does not cover specific Method for measuring the flatness of a body. Geometric Product Specification (GPS) Flatness Part 1.Vocabulary and parameters1 ScopeThis document defines the terms and concepts related to the flatness of single components. This document applies only to the complete flatness profile of a single component.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. ISO 17450﹘1 Geometrical product specifications (GPS) General concepts Part 1.Models for geometrical specifications and verification [Geo﹘ metrical product specifications (GPS)-General concepts-Part 1.Model for geometrical specifica﹘ tion and verification］ Note. GB/T 24637.1 - 2020 Geometrical Product Specification (GPS) General concepts Part 1.Models for geometrical specifications and inspection (ISO 17450﹘1.2011, MOD)3 Terms and definitionsFor the purpose of this document, the terms and definitions defined in ISO 17450﹘1 and the following apply. 3.1 Basic terminology 3.1.1 Flatness Characteristics of the plane. Note. The mathematical definition of the flatness tolerance of nominal components is given in Appendix A. 3.1.2 Nominal plane A mathematical plane defined by design. 3.2 Surface-related terms 3.2.1 extracted surface 〈Flatness〉The actual surface expressed numerically. Note 1.The flatness extraction rules are specified by ISO 12781﹘2, and the extracted surface is a type of extracted component. Note 2.See Figure 1 for a schematic diagram. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 24630.1-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 24630.1-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 24630.1-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 24630.1-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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