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Bevel and hypoid gear geometry
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Basic data | Standard ID | GB/T 43146-2023 (GB/T43146-2023) | | Description (Translated English) | Bevel and hypoid gear geometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J17 | | Classification of International Standard | 21.200 | | Word Count Estimation | 114,115 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 43146-2023: Bevel and hypoid gear geometry---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.
ICS 21.200
CCSJ17
National Standards of People's Republic of China
Bevel and hypoid gear geometry
(ISO 23509.2016,IDT)
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative reference documents 1
3 Terms, definitions and symbols 1
3.1 Terms and Definitions 4
3.2 Symbol 7
4 Design basis 10
4.1 Overview10
4.2 Bevel gear types10
4.3 Transmission ratio 12
4.4 Gear tooth rotation direction 12
4.5 Gear initial parameters 12
5 Factors affecting gear tooth geometry and cutting gear 12
5.1 Manufacturing factors12
5.2 Gear tooth shrinkage 12
5.3 Tooth height profile 14
5.4 Tooth root angle correction 16
5.5 Cutterhead radius 16
5.6 Midpoint radius of curvature 16
5.7 Hypoid gear design 17
5.8 Common types of gear transmission17
5.9 Hypoid gear geometry 17
6-section cone parameters 19
6.1 Initial data of pitch cone parameters 19
6.2 Pitch cone parameters of bevel gears and hypoid gears 19
7 Gear geometry dimensions 27
7.1 Initial data of tooth profile parameters 27
7.2 Basic data 28
7.3 Calculate the point tooth height 30
7.4 Root cone angle and top cone angle 30
7.5 Pinion tooth width (b1) 31
7.6 Helix angle 32
7.7 Tooth height 34
7.8 Other dimensions 35
8 Undercut inspection 36
8.1 Ferry 36
8.2 Big Wheel 37
Appendix A (informative) Framework of ISO calculation formulas for geometric parameters of bevel gears and hypoid gears 39
Appendix B (Informative) Pitch cone parameters 44
Appendix C (informative) Gear geometric dimensions 52
Appendix D (Informative) Force Analysis 58
Appendix E (informative) Machine tool data 60
Appendix F (informative) Four calculation examples 61
Reference 108
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document is equivalent to ISO 23509.2016 "Bevel and hypoid gear geometry".
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Gear Standardization Technical Committee (SAC/TC52).
This document was drafted by. Zhengzhou Machinery Research Institute Co., Ltd., Henan University of Science and Technology, Beijing University of Aeronautics and Astronautics, CITIC Heavy Industry Machinery Co., Ltd.
Co., Ltd., Dongguan Xinghuo Gear Co., Ltd., Jienuo Transmission System (Changzhou) Co., Ltd., Xi'an Fast Automobile Transmission Co., Ltd., Xi'an Fast Automobile Transmission Co., Ltd.
Beijing University of Technology, Jinhua Xintian Gear Co., Ltd., Hunan Zhongda Chuangyuan CNC Equipment Co., Ltd., Chongqing University, Zhejiang Xiaxia Precision Manufacturing Co., Ltd.
Co., Ltd., Chongqing Gearbox Co., Ltd., Zhejiang Shuanghuan Transmission Machinery Co., Ltd., and Luoyang University of Science and Technology Geer Transmission Research Institute.
Co., Ltd., China Machinery Productivity Promotion Center Co., Ltd., Zhengjisuo (Zhengzhou) Transmission Technology Co., Ltd., and Sote Transmission Equipment Co., Ltd.
The main drafters of this document. Wei Bingyang, Wang Zhigang, Wang Yanzhong, Qu Tie, Fan Ruili, Hou Shengwen, Tong Aijun, Zhao Ning, Yu Wentao, Wang Xuewu,
Huang Yaohuang, Lu Shiping, Zou Wenyi, Song Chaosheng, Jiang Chuang, Xia Ting, Zhang Liwei, Li Haixia, Li Jinfeng, Dong Meizhu, Wang Mingkang, Wang Li, Zhang Wei,
Yan Yaolong, Ren Jihua, Yang Wenbo, Xiao Junbao, Liu Huaiju, Xin Wen, Li Tianxing, Deng Xiaozhong, Guo Qingqing, Guan Hongjie, Yao Shuan, Xu Wenbo.
Introduction
For decades, gear machining machine tool manufacturers have developed and disclosed the geometric properties of bevel and hypoid gears. well known
It is known that the relevant calculation formulas are based on specific machine tools and auxiliary tools and are deduced using the generation method. Generally, these formulas do not apply
For all types of bevel gears. But with the advent of general-purpose, multi-axis, CNC machine tools, the situation has changed. These machine tools can theoretically
Machining of almost all types of bevel gears. Therefore, manufacturers of bevel gear processing machines need to consider different cutting methods for their products.
The corresponding geometric principles are matched with CNC programs.
This document integrates the design methods of spur bevel gears and three spiral bevel gears into a complete set of calculation formulas. only in special circumstances
Certain formulas are required. Through these formula sets, users can directly program calculations and compare different bevel gear designs.
The three design methods of spiral bevel gears are based on the general calculation formula of hypoid gears. The calculation of spiral bevel gears only requires the calculation of hypoid gears.
The offset distance can be set to zero. For the bevel gear pair in the geometric sense, the large wheel does not need to consider the offset and is processed by the generation or non-generation method.
to; while the small wheel is added to the total offset of the hypoid gear pair and processed through the generation method.
Another purpose of this document is to establish a standard for ISO hypoid gears in the future based on the comprehensive geometry of bevel gears.
Rating system.
Bevel and hypoid gear geometry
1 Scope
This document gives bevel gear geometry.
The term "bevel gear" is used for the designs of straight bevel gears, spiral bevel gears, zero-degree bevel gears, and hypoid gears. If in this document
The content only involves one or more (but not all) of the forms, and there will be special instructions.
The target tooth profile described in this document can be processed by various methods and is universal and does not imply a specific process.
This document also covers the geometric relationships for the calculation of evaluation factors for bevel gears, eg ISO 10300 (all parts).
This document is intended for experienced gear designers who can rely on their knowledge and background to make reasonable choices for the required values.
This document is not intended for general technical personnel.
This document gives the framework of the calculation method, see Appendix A.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
Note. GB/T 3374.1-2010 Gear terms and definitions Part 1.Geometric definition (ISO 1122-1.1998, IDT)
3 Terms, definitions and symbols
Note 1.The symbols, terms and definitions used in this document have been consistent with other international standards as far as possible. Due to certain application limitations, some symbols, terms and definitions
The meaning is different from the expression of bevel gear in related literature.
Note 2.The geometric terms of bevel gears in this document are illustrated in Figures 1 to 3.Figure 1 is an axis cross-section, Figure 2 is a midpoint cross-section, and Figure 3 shows the quasi-sectional view.
Hyperboloid gear geometry terminology.
The symbols in this document have subscript 1 for small wheels and subscript 2 for large wheels.
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