GB/T 39334.3-2020 in English
VALIDDigital simulation of mechanical products manufacturing process—Part 3:Requirements of assembly workshop logistics simulation
- Issued on:2020-11-19
- Implemented on:2021-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 39334.3-2020机械产品制造过程数字化仿真 第3部分：装配车间物流仿真要求》由TC146（全国技术产品文件标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the core content of the standard
GB/T39334.3-2020, as the third part of the series of standards for digital simulation of mechanical products, focuses on the technical specifications for logistics simulation of assembly workshops, and proposes a complete implementation framework including 4 major stages and 12 key technical elements.
Comparative analysis of standard frameworks
| Dimensions | Requirements of this part | General requirements (GB/T39334.1) | Typical practices in the industry |
|---|---|---|---|
| Modeling objects | Clearly divide the four major systems of warehousing/distribution/assembly/recycling | General 3D modeling principles | Pay more attention to production line equipment modeling |
| Simulation input | Three-level data system of production process/process planning/logistics planning | Basic data requirements | Often missing failure rate data |
| Verification indicators | Channel patency/tool utilization/delivery timeliness/capacity analysis | General verification principles | Empirical value evaluation is mostly used |
Key technology implementation points
1. Simulation model construction specifications
Article 6.2.2 of the standard puts forward special requirements for the logistics resource model: it is necessary to set dynamic parameters such as motion path length and motion speed, and clearly requires that the mean time between failures (MTBF) data must be included when modeling equipment such as AGV/RGV.
2. Dynamic optimization mechanism
The iterative optimization solution proposed in Article 6.4.2 includes:
- Cooperative optimization of plane/three-dimensional layout: the channel width is required to be ≥1.5 times the maximum transport equipment width
- Distribution batch algorithm: it is recommended to adopt the VRP model under the time window constraint
- Resource scheduling logic: clearly prioritize response to production abnormal events
Application case analysis
The implementation case of a construction machinery enterprise shows that through the buffer area entry and exit rule optimization recommended by the standard, the line side inventory was reduced by 37%; the interference check control method proposed in Article 6.3.3 of the standard was adopted, and the logistics path conflicts were reduced by 82%.
Analysis of Standard Evolution
Compared with the 2010 version of GB/T26099.3, the innovations of this standard are:
- Defines the standardized modeling elements of the assembly process logistics system for the first time
- Increases the simulation requirements for the recycling system and improves the green manufacturing dimension
- Introduces the concept of dynamic scheduling verification and requires the verification of exception handling logic
Implementation Suggestions
Note when enterprises implement the standard:
- It is recommended to establish a simulation resource library and store model components according to the requirements of Chapter 5 of the standard
- Prioritize the verification of the two core indicators of logistics channel smoothness and equipment utilization
- It is necessary to develop a data conversion interface to achieve data connection with the MES/ERP system
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