GB/T 39129-2020 in English
VALIDNumerical control system of machine tool—Fault diagnosis and correction specification
- Issued on:2020-10-11
- Implemented on:2021-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 39129-2020机床数控系统 故障诊断与维修规范》由TC367（全国机床数控系统标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
Interpretation of the core content of the standard
As an important technical standard in the field of machine tool CNC systems in my country, GB/T39129-2020 systematically constructs a technical framework for fault diagnosis and maintenance for the first time. The standard highlights the following three major technical features:
1. Multi-dimensional fault classification system
| Classification dimensions | Main types | Judgment criteria |
|---|---|---|
| Correlation | Correlated faults/non-correlated faults | Design defects, component failures and other 6 categories are listed as correlated faults |
| Life cycle | Early/stable/late faults | Fault stages are divided according to the bathtub curve theory |
| Severity | Fatal/serious/minor faults | Set quantitative boundaries with reference to GB/T7826 |
II. Diagnostic Technology System
The practice of Huazhong Type 8 CNC System shows that the three-level self-diagnosis system recommended by the standard can improve the fault location efficiency by more than 30%:
- Power-on self-diagnosis: complete the detection of core components such as CPU and memory
- Operation self-diagnosis: real-time monitoring of the status of modules such as PLC and servo drive
- Offline diagnosis: in-depth analysis of complex faults through external diagnostic programs
III. Maintenance Management Requirements
The standard innovatively proposes the concept of full life cycle management of faults, and requires the establishment of a management system including the following elements:
- Dynamic management of spare parts inventory (including specification matching analysis)
- Maintenance personnel qualification certification system
- Fault data closed-loop feedback mechanism
Implementation suggestions
For high-end manufacturing fields such as aerospace, it is recommended to focus on:
- Establish a fault knowledge base and accumulate typical fault cases
- Configure a remote diagnosis module to achieve expert resource sharing
- Regularly conduct FMEA analysis to prevent potential faults
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