GB/T 33923-2017 English PDF

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GB/T 33923-2017: Design methods for planetary gear drives
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33923-2017	2679	Add to Cart	15 days	Design methods for planetary gear drives	Valid

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Basic data

Standard ID: GB/T 33923-2017 (GB/T33923-2017)
Description (Translated English): Design methods for planetary gear drives
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J19
Classification of International Standard: 21.120
Word Count Estimation: 134,159
Date of Issue: 2017-07-12
Date of Implementation: 2018-02-01
Quoted Standard: GB/T 3141; GB/T 3480; GB/T 9239.1; GB/T 10095.1; GB/T 10095.2; GB/T 19073; GB/Z 19414; ISO 76; ISO 281-2007; ISO 4406; ISO 6336-1; ISO 6336-2; ISO 6336-3; ISO 6336-5; ISO 6336-6; ISO 9084; ISO 9085; ISO 15312; ISO/TS 16281
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the symbols for the planetary gear drive design, the type and transmission ratio of the planetary gear drive, the assembly requirements and the matching method, the system characteristics and special requirements, gear design, load bearing, component design, thermal power calculation and lubrication Design guidelines and specifications. This standard applies to industrial, vehicle and machine tools with single or multi-stage involute planetary gear reducer and gearbox design, the gear can be spur gear, it can be helical gear, carrier speed less than 1 800 r / min, the maximum speed of the gear does not exceed 4 500 r / min, the pitch of the gear is not greater than 35 m / s. If there are the following circumstances beyond the conventional design, you should conduct a more detailed analysis: 1. Light weight; 2. High power; 2. Large torque; 3. Low speed;

GB/T 33923-2017: Design methods for planetary gear drives

---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.
Design methods for planetary gear drives ICS 21.120 J19 National Standards of People's Republic of China Planetary gear transmission design method 2017-07-12 released 2018-02-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by China National Standardization Administration

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Symbol 2 4 Types of planetary gear transmission and calculation of transmission ratio 9 4.1 Overview 9 4.2 Fixing elements 10 4.3 Type 10 4.4 Transmission ratio of planetary gear drive 11 4.5 Relative speed 20 5 Assembly requirements and tooth matching method 20 5.1 Assembly and tooth matching requirements 20 5.2 Neighboring conditions 20 5.3 The concentric condition 22 5.4 Assembly conditions 22 5.5 Gear matching and assembly of compound planetary gear transmission 25 5.6 Theoretical effects of non-factoring and chasing 27 5.7 Practical tooth matching procedures and design examples 30 5.8 Determination of the installation angle θ when the planetary gears are arranged in unequal divisions 30 6 System characteristics and special requirements 31 6.1 Meshing power flow 31 6.2 System dynamic characteristics 35 6.3 Noise 36 6.4 Speed limit 37 6.5 Anti-fretting wear design 38 7 Gear Design 39 7.1 Gear geometry parameter design 39 7.2 Gear strength calculation 40 7.3 Tooth modification 42 8 Average load 43 8.1 Average load factor 43 8.2 Floating and degrees of freedom 44 8.3 Common load sharing method 44 9 Component design 45 9.1 Bearing 45 9.2 Gear coupling 47 9.3 Threaded fasteners 53 9.4 Key connection 56 9.5 Planet carrier 56 9.6 Box 57 9.7 Axis 57 9.8 Planetary pin shaft 57 9.9 Calculation of the moment of inertia of planetary gear transmission 58 9.10 Balance 58 9.11 Installation 59 10 Thermal power calculation 60 10.1 Allowable heating power 60 10.2 Standard conditions for the determination of allowable heating power 60 10.3 Method A-Test Method 60 10.4 Method B-Calculation Method 62 10.5 Amendment rules for non-standard conditions 73 10.6 Efficiency 75 11 Lubrication 75 11.1 Overview 75 11.2 Selection of lubricant 76 11.3 Lubrication method 76 11.4 Lubrication Maintenance 78 Appendix A (Normative Appendix) Design of Two Types of Planetary Gear Transmission 80 Appendix B (informative appendix) Design example of special planetary gear transmission 86 Appendix C (informative appendix) Design calculation example of compound planetary gear transmission and example of special tooth arrangement 93 Appendix D (Normative Appendix) Bearing configuration design and size specification selection 99 Appendix E (informative appendix) Calculation of bearing radial working clearance 115 Appendix F (informative appendix) Coordination between shaft, housing and bearing 121 Appendix G (informative appendix) Permissible heating power calculation example 124

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by China Machinery Industry Federation. This standard is organized by the National Standardization Technical Committee for Reducers (SAC/TC357), the National Standardization Technical Committee for Metallurgical Equipment (SAC/ TC409) Centralized. Drafting organizations of this standard. Tianjin Huajian Tianheng Transmission Co., Ltd., Jiangsu Tailong Reducer Co., Ltd., China Heavy Machinery Research Institute Joint Stock Company, Jiangsu Shangya Group Co., Ltd., Zhengzhou Machinery Research Institute, Taiyuan University of Technology, SKF (China) Co., Ltd., North Beijing Crane and Transportation Machinery Design and Research Institute. The main drafters of this standard. Li Zhaogang, Zhang Shaoming, Kong Xia, Xu Weimin, Zhang Guorui, Zhu Xiaolu, Zhang Zhan, Liu Shijun, Wang Tie, Wang Xihui, Hakan Lindgren, Li Peng, Wu Zhifei, Zhao Ying, Zeng Jianfeng, Su Jing, Yin Ping, Cai Yunlong, Zhang Yusheng. Planetary gear transmission design method

1 Scope

This standard gives the symbols of planetary gear transmission design, the type and transmission ratio calculation of planetary gear transmission, assembly requirements and gear allocation Design guidelines and specifications for methods, system characteristics and special requirements, gear design, load sharing, component design, thermal power calculation and lubrication. This standard applies to the design of single-stage or multi-stage involute planetary gear reducers and speed increasers for industry, vehicles and machine tools. The gears can be Spur gears, or helical gears, the planet carrier speed is lower than 1800r/min, the maximum speed of the gear does not exceed 4500r/min, the pitch of the gear The linear velocity is not more than 35m/s. If there are the following conditions beyond the conventional design, more detailed analysis and research should be carried out. ---Light weight; ---High Power; ---High torque; ---Low speed; ---Space is restricted; ---Use the lubrication method outside this standard; ---Adopt double helical gear; ---Extreme ambient temperature; ---Magnetic field or vacuum environment. Appendix A gives the specific application of this standard in the design of two types of planetary gear transmissions.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 3141 ISO viscosity classification of industrial liquid lubricants GB/T 3480 Involute cylindrical gear load capacity calculation method (GB/T 3480-1997, eqvISO 6336-1~6336-3. 1996) GB/T 9239.1 Mechanical vibration constant state (rigid) rotor balance quality requirements Part 1.Specification and balance tolerance inspection (ISO 1940-1.2003, IDT) GB/T 10095.1 Cylindrical gear accuracy system Part 1.Definition and allowable value of the deviation of the tooth on the same side GB/T 10095.2 Cylindrical gear accuracy system Part 2.The definition and allowable values of radial integrated deviation and radial runout GB/T 19073 Gearbox for wind turbine GB /Z 19414 Closed gear transmission for industrial use (GB /Z 19414-2003, ISO /T R13593.1999, IDT) ISO 76 Rolling bearing static load rating (Rolingbearings-Staticloadratings) ISO 281.2007 Rolling bearing dynamic load rating and rating life (Rolingbearings-Dynamicloadratingsand ratinglife) ISO 4406 Hydraulic fluid power-Fluids-Method (Hydraulicfluidpower-Fluids-Method) forcodinglevelofcontaminationbysolidparticles) ISO 6336-1 Calculation of load-carrying capacity of spur gears and helical gears Part 1.Basic principles, introduction and general influence coefficient (Cal- ......

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