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GB/T 38762.2-2020: Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2: Dimensions other than linear or angular sizes
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Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2: Dimensions other than linear or angular sizes
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GB/T 38762.2-2020
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Basic data | Standard ID | GB/T 38762.2-2020 (GB/T38762.2-2020) | | Description (Translated English) | Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2: Dimensions other than linear or angular sizes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L55 | | Classification of International Standard | 17.040.10 | | Word Count Estimation | 22,245 | | Date of Issue | 2020-04-28 | | Date of Implementation | 2020-11-01 | | Quoted Standard | GB/T 1182; GB/T 4249; GB/T 19096; GB/T 24637.1; GB/T 24637.2; GB/T 24637.3; GB/T 38762.1; GB/T 38762.3; ISO 129-1 | | Adopted Standard | ISO 14405-2-2018, MOD | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the uncertainty arising from the application of dimensional specifications to control dimensions other than linear and angular dimensions, and the benefits of using geometric specifications to control these dimensions. Dimensional tolerances can be marked with �� tolerances or geometric specifications. For dimensions other than linear dimensions, the uncertainty arising from the use of �� tolerances (for example, the independent tolerances and general tolerances mentioned in GB/T 1804 and GB/T 6414), are explained in Appendix A. | GB/T 38762.2-2020: Geometrical product specifications (GPS) - Dimensional tolerancing - Part 2: Dimensions other than linear or angular sizes
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Geometrical product specifications (GPS)-Dimensional tolerancing--Part 2. Dimensions other than linear or angular sizes
ICS 17.040.10
L55
National Standards of People's Republic of China
Product Geometric Technical Specification (GPS) Dimensional Tolerance
Part 2. Dimensions other than linear and angular dimensions
(ISO 14405-2..2018, MOD)
2020-04-28 release
2020-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Principles and regulations for dimensioning and related tolerance marking 2
5 Dimensions in the drawing 3
6 Tolerance of linear and angular dimensions 3
7 Uncertainty ± Tolerance labeling and illustration of the determined geometric specifications 3
8 Angle tolerance 8
Appendix A (informative appendix) Explanations and examples of the use of ± tolerances to cause uncertain dimensions other than linear and angular dimensions
Appendix B (informative appendix) Relationship with GPS matrix model 16
Reference 17
Foreword
GB/T 38762 "Geometric Technical Specifications (GPS) Dimensional Tolerance" is divided into 3 parts.
--- Part 1. Linear dimensions;
--- Part 2. Dimensions other than linear and angular dimensions;
--- Part 3. Angle dimensions.
This part is Part 2 of GB/T 38762.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This section uses the redrafting method to modify and adopt ISO 14405-2..2018
Part 2. Dimensions other than linear and angular dimensions.
The technical differences between this part and ISO 14405-2..2018 and the reasons are as follows.
--- With regard to normative quotation documents, this part has been adjusted with technical differences to adapt to China's technical conditions and adjustments
The situation is reflected in Chapter 2 "Regulatory Reference Documents", with specific adjustments as follows.
● Replaced ISO 1101 with GB/T 1182 modified to adopt international standards;
● Replaced ISO 8015 with GB/T 4249 modified to adopt international standards;
● Replace ISO 13715 with GB/T 19096 equivalent to international standards;
● Replaced ISO 17450-1 with GB/T 24637.1 modified to adopt international standards;
● Replaced ISO 17450-2 with GB/T 24637.2 modified to adopt international standards;
● Replaced ISO 17450-3 with GB/T 24637.3 modified to adopt international standards;
● Replaced ISO 14405-1 with GB/T 38762.1 modified to adopt international standards;
● Replaced ISO 14405-3 with GB/T 38762.3 modified to adopt international standards.
This part is proposed and managed by the National Product Geometry Technical Standardization Technical Committee (SAC/TC240).
This section was drafted. China Aviation Development Xi'an Aero Engine Co., Ltd., China Machine Productivity Promotion Center, Xi'an Jiaotong University, Shaanxi
Metrology Research Institute, Beijing Automobile Co., Ltd., Zhongyuan Institute of Technology.
The main drafters of this section. Ming Cuixin, Jing Weixuan, Zhang Li, Liu Ying, Zhu Yue, Zhao Zexiang, Liu Pengcheng, Gao Weizhuo, Teng Lijing.
Product Geometric Technical Specification (GPS) Dimensional Tolerance
Part 2. Dimensions other than linear and angular dimensions
1 Scope
This part of GB/T 38762 describes the uncertainty caused by the application of dimensional specifications to control dimensions other than linear and angular dimensions,
And the benefits of using geometric specifications to control the above dimensions.
Dimensional tolerances can be marked with ± tolerances or geometric specifications.
Dimensions other than linear dimensions use uncertainty due to ± tolerance (e.g., the uniqueness mentioned in GB/T 1804 and GB/T 6414
Vertical tolerance and general tolerance), an explanation is given in Appendix A.
Note 1. The legend in this section is simplified, only to explain the content of the text, does not reflect the actual use. Therefore, the legend is only a simplified
化 Callouts.
Note 2. For the labeling of dimensional tolerances, see the following.
--- GB/T 38762.1 linear size;
--- GB/T 38762.3 angle size;
--- ISO 2538-1 and ISO 2538-2 wedge;
--- GB/T 15754 cone.
Note 3. The rules of geometric specifications are given in GB/T 1182.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 1182 Product Geometric Technical Specification (GPS) Geometric Tolerance Shape, Orientation, Position and Runout Tolerance Marking (GB/T 1182-
2018, ISO 1101..2017, MOD)
GB/T 4249 Product Geometrical Technical Specifications (GPS) Basic concepts, principles and rules (GB/T 4249-2018, ISO 8015.
2011, MOD)
GB/T 19096 Technical drawing pattern drawing method does not define the terms and annotations of shape edges (GB/T 19096-2003,
(ISO 13715..2000, IDT)
GB/T 24637.1 Geometrical Product Specification (GPS) General Concept Part 1. Geometric Specification and Inspection Model
(GB/T 24637.1-2020, ISO 17450-1..2011, MOD)
GB/T 24637.2 Product Geometric Technical Specifications (GPS) General Concept Part 2. Basic Principles, Specifications, Operation Sets and Inaccuracies
Rating (GB/T 24637.2-2020, ISO 17450-2..2012, MOD)
GB/T 24637.3 Product Geometric Technical Specifications (GPS) General Concept Part 3. Tested Elements (GB/T 24637.3-2020,
ISO 17450-3..2016, MOD)
GB/T 38762.1 Product Geometric Technical Specifications (GPS) Dimensional Tolerance Part 1. Linear Dimensions (GB/T 38762.1-2020,
(ISO 14405-1..2016, MOD)
GB/T 38762.3 Geometrical Product Specifications (GPS) Dimensional Tolerance Part 3. Angle Dimensions (GB/T 38762.3-2020,
ISO 14405-3..2016, MOD)
ISO 129-1 Technical drawing representation of dimensions and tolerances Part 1. General guidelines [Technicalproductdocumentation
(TPD) -Presentationofdimensionsandtolerances-Part 1. Generalprinciples]
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