GB/T 38368-2019 in English
VALIDGeometrical product specifications (GPS) -- Requirements of digital model-based measurement
- Issued on:2019-12-31
- Implemented on:2020-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | GB/T 38368-2019 |
| Document status: | VALID |
| Title in English: | Geometrical product specifications (GPS) -- Requirements of digital model-based measurement |
| Title in Chinese: | 产品几何技术规范（GPS） 基于数字化模型的测量通用要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-12-31 |
| Implemented on: | 2020-07-01 |
| ICS Classification: | 01.100.01-Technical drawings in general |
| Chinese Classification: | J04-Basic standards and general methods |
| Professional Classification: | GB-National Standard |
| Related Keywords: | measurement operation information measurement model construction
digital model-based measurement introduction digital model-based measurement technology measurement process standardized measurement model |
| Related Topics: | Digitizing
Product Geometry Technology Measurement process "Digitizing GBT38368 Product Geometric Specification (GPS) Geometric Tolerance Testing and Verification |
《GB/T 38368-2019产品几何技术规范（GPS） 基于数字化模型的测量通用要求》由TC240（全国产品几何技术规范标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
1. Background of standard formulation and analysis of technological evolution
With the increasing precision requirements of modern manufacturing, digital model-based measurement technology plays an increasingly important role in the field of mechanical manufacturing. The formulation of GB/T 38368-2019 aims to unify and standardize the measurement process based on digital models to ensure the accuracy and reliability of measurement results. This standard combines the product geometry technical specification (GPS) system and the development trend of international measurement technology, reflecting the current technical needs and technological progress in the field of mechanical manufacturing.
2. Comparison table of standard frameworks
| Standard dimensions | GB/T 38368—2019 | Related international standards | Technical differences |
|---|---|---|---|
| Digital model requirements | Complies with GB/T26099, GB/T24734 | ISO 10303-2 | Expanded the integrity requirements for measurement operation information |
| Measurement model construction | Includes front-end data and process design data | ISO 10306-2 | Introduced the annotation card form to associate the measured elements |
| Measurement process design | PUMA method based on target uncertainty | ISO 10307-2 | Optimized measurement equipment selection and environmental conditions control |
3. Implementation suggestions and case analysis
Implementation suggestions:
- Give priority to the original format digital model to ensure the accuracy of the measurement information
- Perform sufficient equipment calibration and environmental monitoring before measurement
- Select appropriate measurement methods and technical routes based on specific application scenarios
- Establish a measurement process design verification mechanism to ensure the validity of the measurement results
Case analysis:
A certain automobile manufacturer adopted the measurement process specified in this standard in the measurement of the digital model of its engine cylinder block. By establishing a standardized measurement model and performing uncertainty assessment based on the PUMA method, the measurement efficiency and accuracy are significantly improved, and the measurement errors caused by environmental fluctuations are reduced.
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