GB/T 40731-2021 English PDF

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GB/T 40731-2021: Method of test and evaluation for lost motion of precision reducer
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Basic data

Standard ID: GB/T 40731-2021 (GB/T40731-2021)
Description (Translated English): Method of test and evaluation for lost motion of precision reducer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J17
Word Count Estimation: 16,173
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40731-2021: Method of test and evaluation for lost motion of precision reducer

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Method of test and evaluation for lost motion of precision reducer ICS 21.200 CCSJ17 National Standards of People's Republic of China Test and Evaluation Method of Backlash of Precision Reducer Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbols, descriptions and units 2 5 Test equipment 4 6 Test piece and installation 4 7 Test condition 5 8 Static testing and data processing 5 8.1 Installation type 5 8.2 Test Step 5 8.3 Data processing 6 8.4 Number of test positions 8 9 Dynamic Testing and Data Processing 8 9.1 Installation form 8 9.2 Test speed 8 9.3 Test Step 8 9.4 Data processing 9 10 Evaluation method 10 10.1 General 10 10.2 Method 10 Reference 12

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Gear Standardization Technical Committee (SAC/TC52). Drafting organizations of this document. Beijing University of Technology, Ningbo Zhongdali De Intelligent Transmission Co., Ltd., Shaanxi Weihe Precision Transmission Co., Ltd. Division, Hubei Kefeng Intelligent Drive Co., Ltd., Suzhou Green Harmonic Drive Technology Co., Ltd., Zhengzhou Machinery Research Institute Co., Ltd., Shenzhen Zhaowei Electromechanical Co., Ltd., Guangdong Jinli Transmission Technology Co., Ltd., Harbin Jingda Measuring Instrument Co., Ltd., Zhejiang Huandong Robot Joint Technology Co., Ltd., Shenzhen Sanduo Le Intelligent Transmission Co., Ltd., Wanxin Precision (Hunan) Co., Ltd., Zibo Newstar Planetary Reducer Co., Ltd., Jimei University, Zhongyuan Institute of Technology. The main drafters of this document. Shi Zhaoyao, Xu Hang, Yu Bo, Wang Zhigang, Cen Guojian, Li Jianmin, Wu Junfeng, Li Qian, Li Ping, Li Dongyang, Zhou Guangcai, Zhang Jing, Yang Dongping, Zhou Qingquan, Amway Book, Luo Shanming, Luo Limin, Zhang Yanjun, Shu Weiming, Xin Dong, Wang Xiaoyi, Liu Lixue, Zhu Zhonggang, Chen Bin, Tian Lianming, Li Wen, Xu Jianmin, Ding Hongyu, Yu Yong. Test and Evaluation Method of Backlash of Precision Reducer

1 Scope

This document specifies the test equipment, test piece and installation, test conditions, as well as static test, dynamic test, and data of precision reducer. According to processing and evaluation methods. This document is applicable to planetary, planetary cycloid, harmonic gear and other types of precision reducers (hereinafter referred to as "precision "Reducer") return difference test and evaluation method.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 35089-2018 Test method of precision gear transmission for robots

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Back difference lostmotion After the movement direction of the input end of the precision reducer changes to the movement direction of the output end changes, the lag of the output end on the angle of rotation. Note. When k=3 in 8.3.3, the value of "static test geometric hysteresis" is equal to the value of "hysteresis" in GB/T 35089-2018 and GB/T 36491-2018. 3.2 Lostmotioncurve The output end of the precision reducer is in the range of 360° angle of rotation, and the curve formed by the return difference value of each angle of rotation. 3.3 Average return difference meanlostmotion The arithmetic mean value of the return difference of each angle position at the output end of the precision reducer in the 360° angle range. 3.4 Geometric return difference geometriclostmotion The return difference of precision reducer due to geometric factors (design, processing, assembly, etc.). 3.5 Elastic loss motion The hysteresis of the precision reducer due to elastic deformation under the rated torque. 3.6 Total return difference totallostmotion The hysteresis of the precision reducer due to the combined effect of geometric factors and elastic deformation under the rated torque. 3.7 Hysteresiscurve The input terminal is fixed, the output terminal is gradually loaded to the rated torque and then unloaded, and then gradually loaded to the rated torque in the reverse direction, and then unloaded, record multiple groups ......

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