GB/T 39266-2020 in English

Overview of the core content of the standard

GB/T 39266-2020 specifies the reliability requirements and test methods for industrial robots in mechanical environments, and is applicable to various types of industrial robot bodies and control systems. The standard mainly includes:

• Mechanical environment requirements: 9 types of environmental stress indicators such as vibration, impact, tilt, etc.
• Reliability indicators: MTBF verification scheme and failure judgment rules
• Test methods: two verification methods: laboratory and on-site

Key indicators of mechanical environmental test

Reliability Verification Implementation Plan

MTBF Verification Method

The standard recommends the use of a timed truncation test plan, with the following main parameters:

• Discrimination ratio: 1.5-3.0 (default value 2.0)
• Manufacturer riskα: 10%-30%
• User riskβ: 10%-30%

Fault classification principles

Analysis of standard technology evolution

Compared with previous industry specifications, the main breakthroughs of this standard are:

1. Comprehensive environmental stress: For the first time, multi-factor coupling tests such as vibration, temperature, and humidity are written into the national standard
2. Quantitative reliability indicators: Clarify the statistical scheme and acceptance criteria for MTBF verification
3. Transport simulation innovation: Introduce the three-level random vibration spectrum (road transport spectrum)

Appendix Application Guide

In the example of the comprehensive environmental stress profile provided in Appendix A:

• Temperature cycle range: -40℃~+60℃
• Vibration spectrum: 5-500Hz broadband random vibration
• Typical cycle: 480 minutes (including 4 temperature change cycles)

It is recommended that enterprises adjust stress parameters according to the actual use environment. For example, the tilt test (≥22.5°) should be strengthened for AGV robots used in ports.