GB/T 10095.2-2023 PDF English
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Cylindrical gears - ISO system of flank tolerance classification - Part 2: Definitions and allowable values of double flank radial composite deviations
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| GB/T 10095.2-2008 | English | 145 |
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Cylindrical gears -- System of accuracy -- Part 2: Definitions and allowable values of deviations relevant to radial composite deviations and runout information
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| GB/T 10095.2-2001 | English | 639 |
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Cylindrical gears-system of accuracy -- Part 2: Definitions and allowable values of deviations relevant to radial composite deviations and runout information
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GB/T 10095.2-2023: Cylindrical gears - ISO system of flank tolerance classification - Part 2: Definitions and allowable values of double flank radial composite deviations
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GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.200
CCS J 17
GB/T 10095.2-2023 / ISO 1328-2.2020
Replacing GB/T 10095.2-2008
Cylindrical Gears – ISO System of Flank Tolerance
Classification – Part 2.Definitions and Allowable Values of
Double Flank Radial Composite Deviations
(ISO 1328-2.2020, IDT)
Issued on. AUGUST 6, 2023
Implemented on. MARCH 1, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
Introduction... 5
1 Scope... 6
2 Normative References... 6
3 Terms, Definitions and Symbols... 7
3.1 Terms and definitions... 7
3.2 Symbols... 9
4 Application of the ISO Double Flank Radial Composite Tolerance Classification
System... 9
4.1 General... 9
4.2 Gear tooth tolerance class... 10
4.3 Specification of datum surfaces... 11
4.4 Application of the ISO flank classification standard... 11
4.5 Acceptance criteria... 12
4.6 Correlation of double flank radial composite and element deviations... 12
4.7 Designation of the double flank radial composite tolerance class or tolerances... 12
5 Tolerance Values... 12
5.1 General... 12
5.2 Use of formulae... 13
5.3 Tooth-to-tooth radial composite tolerance, fidT... 13
5.4 Total radial composite tolerance, FidT... 13
Annex A (Informative) Graph of Tolerance Values for Class R34, R44, and R50 for
Spur Gears with Module = 1.0 mm... 15
Annex B (Informative) Double Flank Radial Composite Deviation over Segments of k
Teeth... 17
Annex C (Informative) Reasons for Changing Double Flank Composite Tolerances 19
Annex D (Informative) Conversion from Another Double Flank Composite Tolerance
Specification... 21
Annex E (Informative) Calculation Examples... 23
Bibliography... 32
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for
Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This Document is Part 2 of GB/T 10095 Cylindrical Gears – ISO System of Flank Tolerance
Classification. GB/T 10095 consists of the following parts.
--- Part 1.Definitions and Allowable Values of Deviations Relevant to Corresponding
Flanks of Gear Teeth;
--- Part 2.Definitions and Allowable Values of Double Flank Radial Composite Deviations.
This Document replaced GB/T 10095.2-2008 Cylindrical Gears - System of Accuracy - Part 2.
Definitions and Allowable Values of Deviations Relevant to Radial Composite Deviations and
Runout Information. Compared with GB/T 10095.2-2008, the major technical changes are as
follows, besides the structural adjustments and editorial modifications.
a) Change the scope of application, which contains a sector gear (see Clause 1 of this Edition;
Clause 1 of the 2008 Edition);
b) Change the terms, definitions, and symbols (see Clause 3 of this Edition; Clause 4 and
Clause 5 of the 2008 Edition);
c) Change the system of flank tolerance classification (see Clause 4 of this Edition; Clause
6 of the 2008 Edition);
d) Change the calculation formula of the radial comprehensive tolerance (see Clause 5 of
this Edition; Clause 7 of the 2008 Edition);
e) Delete the radial runout (see Annex B of the 2008 Edition).
This Document equivalently adopted ISO 1328-2.2020 Cylindrical Gears – ISO System of
Flank Tolerance Classification – Part 2.Definitions and Allowable Values of Double Flank
Radial Composite Deviations.
Please note some contents of this Document may involve patents. The issuing agency of this
Document shall not assume the responsibility to identify these patents.
This Document was proposed by and under the jurisdiction of National Technical Committee
on Gear of Standardization Administration of China (SAC/TC 52).
Drafting organizations of this Document. Zhengzhou Research Institute of Mechanical
Engineering Co., Ltd.; Beijing University of Technology; Zhejiang Shuanghuan Driveline Co.,
Ltd.; Ningbo ZhongDa Leader Intelligent Transmission Co., Ltd.; Xi’an Fast Auto Drive Co.,
Ltd.; Nanjing High Speed & Accurate Gear Co., Ltd.; Jiangsu Guomao Reducer Co., Ltd.;
Harbin Jingda Measuring Instrument Co., Ltd.; Zhejiang FORE Intelligent Technology Co.,
Ltd.; Shenzhen Zhaowei Machinery & Electronics Co., Ltd.; Zhejiang XiaSha Precision
Manufacturing Co., Ltd.; Henan University of Science and Technology; Chongqing University;
Hunan Pangu Transmission Technology Co., Ltd.; Dongguan Xinghuo Gear Co., Ltd.; Wenling
Minghua Gear Co., Ltd.; and Zhengji Institute (Zhengzhou) Transmission Technology Co., Ltd.
Chief drafting staffs of this Document. Shi Zhaoyao, Wang Zhigang, Wang Wei, Tang Jie, Wu
Changhong, Li Haixia, Cen Guojian, Kou Zhida, Zhao Zefang, Tang Zhisheng, Liu Lixue,
Wang Youli, Fan Ruili, Xin Dong, Xie Guiping, Wang Xiaoyi, Chen Yonghong, Guo Qingqing,
Zhou Changjiang, Tong Aijun, He Benyi, Jing Daiyun, Xu Jiake, Jin Weifeng, Wei Bingyang,
Guang Hongjie, and Ji Xieru.
The historical editions replaced by this Standard are as follows.
--- GB/T 10095-1988 was first-time published in 1988;
--- When revising for the first-time in 2001, it is divided into 2 parts; this Document
corresponds to GB/T 10095.2-2001 Cylindrical Gears - System of Accuracy - Part 2.
Definitions and Allowable Values of Deviations Relevant to Radial Composite Deviations
and Runout Information;
--- It was revised second-time in 2008;
--- This is third-time revision.
1 Scope
This Document establishes a gear tooth classification system relevant to double flank radial
composite deviations of individual cylindrical involute gears and sector gears. It specifies the
appropriate definitions of gear tooth deviations, the structure of the gear tooth flank
classification system, and the allowable values of the gear tooth deviations.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
3 Terms, Definitions and Symbols
Method to measure elemental deviations (3.1.2).
Difference between the maximum and minimum values of center distance found after
evaluating all the teeth of a product gear (3.1.5) in a double flank test (3.1.1) with a master gear
(3.1.4).
4 Application of the ISO Double Flank Radial Composite Tolerance Classification System
Specification of radial composite tolerances requires the definition of datum surfaces to be used
for double flank inspection. See ISO/TR 10064-3.
5 Tolerance Values
For gears with more than 200 teeth, except for sector gears, a default value of 200 shall be used
for the number of teeth.
This subclause applies only to sector gears whose teeth occupy two-thirds of a full circle or less.
If │zk/z│ >2/3, Formula (4) shall be used for the total radial composite tolerance, FidT, of the
sector gear as though it is equivalent to a full circle gear.
Annex A
(Informative)
Graph of Tolerance Values for Class R34, R44, and R50 for
Spur Gears with Module = 1.0 mm
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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