GB/T 46849.7-2025Technical product documentation - Requirements for model based definition - Part 7: Data organization (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This document is Part 7 of GB/T 46849 "Technical Product Documentation Requirements Based on Model Definition". GB/T 46849 has been published. The following parts were included.

1.General Provisions;

---Part 2.3D Annotation;

5.Detection Data;

7.Data Organization;

8.Data Inspection;

9.Data Release. Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Technical Product Documentation (SAC/TC146). This document was drafted by: the 38th Research Institute of China Electronics Technology Group Corporation, Wanxiang Qianchao Co., Ltd., and CRRC Qishuyan Locomotive Co., Ltd. CRRC Corporation Limited, China Aero Engine Corporation Xi'an Power Control Technology Co., Ltd., CRRC Dalian Locomotive & Rolling Stock Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd. China Machinery Productivity Promotion Center Co., Ltd., and China Machinery Research Institute of Standards and Technology (Beijing) Co., Ltd. The main drafters of this document are. Cheng Wusi, Zhang Hongqi, Shi Bomei, Xing Yingying, Wang Yu, Zhang Lichen, Li Junping, Wang Yunfeng, and Luo Haipeng. Gao Hongwei.

With the gradual application and promotion of 3D computer-aided design (CAD) technology, and the application of model-defined design (MBD) technology in manufacturing... The implementation within enterprises has brought about significant changes in the development model and process of mechanical products, with three-dimensional digital models replacing two-dimensional drawings. Paper gradually became the sole basis for product development, which was a huge change in terms of technology, management, and mindset. To adapt to this change, systematically address the bottlenecks in product 3D design and manufacturing, and promote the popularization of model-based definition technology... Engineering applications support the digital transformation and upgrading of my country's manufacturing industry, and have led to the formulation of GB/T 46849 "Technical Product Documentation Based on Model Definition". The requirements are as follows: GB/T 46849 is based on the definition and application process of the three-dimensional model of the entire product life cycle, and is proposed to consist of 9 parts.

1.General Provisions. The purpose is to define the general, detailed, and management requirements based on the model definition, serving as a framework for the entire system. The foundation and framework of the standards.

---Part 2.3D Annotation. The purpose is to define the classification and composition of 3D annotation, and its application in 3D digital models of products. General and detailed requirements for 3D annotation are provided to ensure that the annotation information is clear, complete, and understandable.

3.Design Data. The purpose is to define the classification and composition of design data based on the model definition, and to define the design data... General and detailed requirements for design and management are required to ensure the accuracy and sufficiency of design data as the sole data source.

4.Process Data. The purpose is to define the classification and composition of model-based process data, as well as the definition of process data. General and detailed requirements for management and control are established to ensure effective coordination between process design and manufacturing processes.

5.Detection Data. The purpose is to define the classification and composition of detection data based on the model definition, and its relationship with the geometric model. The requirements, as well as the general and detailed requirements for the definition and management of test data, ensure the accurate implementation of quality control.

1 Scope

GB/T 46849.7-2025 is the Chinese national standard covering how a model based definition dataset is organised - the model, its annotations, the attributes and the supplementary documents, their identification and versioning, and the structure in which they are released to manufacturing. Part 7 of the series, first edition, with Part 2 on annotation. It was issued on 31 December 2025 and has been in force since 1 April 2026, as a first edition. The document is under the responsibility of the Standardization Administration of China. This page is published from the official record of the 2025 edition; the clause text of a standard this recent is not yet in circulation, and the figures, limits and tables it contains are those of the document itself, delivered in full with the English translation.

This document specifies the organizational principles, requirements, forms, annotation set display requirements, and data filtering for model-defined data organization. Select requirements. This document applies to data organization and management based on model definitions.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document.

GB/T 4458.4-2003 Dimensioning in Mechanical Drawing

GB/T 18617.1-2002 Organization and Naming of CAD Layers in Technical Product Documentation - Part

1.Overview and Principles GB /Z 19098-2003 Data Content and Organization for the Digital Definition of Mechanical Products

GB/T 24734.1-2009 Technical Product Documentation - Digital Product Definition Data - Part

3 Terms and Definitions

The terms and definitions defined in GB/T 24734.1-2009 and GB/T 46849.1, as well as the following terms and definitions, apply to this document.

3.1 annotation set A dataset based on model definition information expressed through 3D annotation.

3.2 SavedViewSet Saves a collection of views containing 3D annotation information based on the model definition.

4 Organizational Principles

4.1 Relevance It should have the functionality to maintain associated data elements.

5 General Product Definition Data Require

GB/T 46849.1 Technical Product Documentation - Requirements Based on Model Definition - Part