GB/T 10086-2018 English PDF (GB/T10086-2018)

GB/T 10086-2018: Symbols for cylindrical worm and worm wheel
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GB/T 10086-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.200
J 17
Replacing GB/T 10086-1988
Symbols for cylindrical worm and wormwheel
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. DECEMBER 1, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Basic symbols for worm and wormwheel ... 5 
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 10086-1988 “Terminology and symbols for
cylindrical worm and wormwheel”.
As compared with GB/T 10086-1988, the main changes of this Standard are as
follows.
- CHANGE the standard’s name to “Symbols for cylindrical worm and
wormwheel”;
- ADD the “Foreword” of the standard;
- DELETE the content concerning the “requirements” in the scope of the
former standard (SEE Clause 1; Clause 1 of the 1988 edition);
- REFER to the latest edition of the relevant standards (SEE Clause 2;
Clause 2 of the 1988 edition);
- ADD “Combination rules for basic symbols” (SEE Clause 3);
- LIST the basic symbols in tabular form (SEE Clause 3; Clause 3 of the 1988
edition);
- DELETE the contents concerning terms (SEE Clauses 4, 5, and 6 of the
1988 edition).
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. The issuing authority of this document shall
not be held responsible for identifying any or all such patent rights.
This Standard was proposed by and shall be under the jurisdiction of National
Technical Committee 52 on Gears of Standardization Administration of China
(SAC/TC 52).
Drafting organizations of this Standard. Chongqing Machine Tool (Group) Co.,
Ltd., Zhengzhou Research Institute of Mechanical Engineering Co., Ltd., Beijing
University of Technology.
Main drafters of this Standard. Li Xianguang, Yu Kebin, Li Yi, Zhang Yuanguo,
Shi Zhaoyao, Long Lin, Zhang Liang, Li Mingyu, Xie Xiaoqing, Wang Zhigang,
Lu Jun.
The previous editions of the standard replaced by this Standard were released
Symbols for cylindrical worm and wormwheel
1 Scope
This Standard specifies the symbols for cylindrical worm and wormwheel.
This Standard is applicable to the cylindrical worm gearing with a shaft angle
∑=90°, and its worm and wormwheel.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the versions with the dates indicated are
applicable to this document. For the undated references, the latest version
(including all the amendments) are applicable to this document.
GB/T 2821-2003 Gear - Symbols for geometrical data
3 Basic symbols for worm and wormwheel
3.1 Combination rules for basic symbols
The basic symbols for worm and wormwheel follow the requirements of 2.1 of
GB/T 2821-2003. The main rules are as follows.
a) The symbol consists of a main symbol or a main symbol plus one or more
subscripts or a superscript;
b) The main symbol can be a separate uppercase or lowercase letter. The
letters shall be italic Roman or Greek letters;
c) The subscript shall be a Roman letter or an Arabic numeral or a
combination of both;
d) All subscripts shall be marked on the same line and lower than the main
symbol;
e) Symbols with lines drawn (drawn above or below), superscripts other than
indices, pre-subscripts, pre-superscripts, secondary subscripts,
secondary superscripts, and dashes shall be avoided.
3.2 Main symbols
GB/T 10086-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 21.200
J 17
Replacing GB/T 10086-1988
Symbols for cylindrical worm and wormwheel
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. DECEMBER 1, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Basic symbols for worm and wormwheel ... 5 
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 10086-1988 “Terminology and symbols for
cylindrical worm and wormwheel”.
As compared with GB/T 10086-1988, the main changes of this Standard are as
follows.
- CHANGE the standard’s name to “Symbols for cylindrical worm and
wormwheel”;
- ADD the “Foreword” of the standard;
- DELETE the content concerning the “requirements” in the scope of the
former standard (SEE Clause 1; Clause 1 of the 1988 edition);
- REFER to the latest edition of the relevant standards (SEE Clause 2;
Clause 2 of the 1988 edition);
- ADD “Combination rules for basic symbols” (SEE Clause 3);
- LIST the basic symbols in tabular form (SEE Clause 3; Clause 3 of the 1988
edition);
- DELETE the contents concerning terms (SEE Clauses 4, 5, and 6 of the
1988 edition).
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. The issuing authority of this document shall
not be held responsible for identifying any or all such patent rights.
This Standard was proposed by and shall be under the jurisdiction of National
Technical Committee 52 on Gears of Standardization Administration of China
(SAC/TC 52).
Drafting organizations of this Standard. Chongqing Machine Tool (Group) Co.,
Ltd., Zhengzhou Research Institute of Mechanical Engineering Co., Ltd., Beijing
University of Technology.
Main drafters of this Standard. Li Xianguang, Yu Kebin, Li Yi, Zhang Yuanguo,
Shi Zhaoyao, Long Lin, Zhang Liang, Li Mingyu, Xie Xiaoqing, Wang Zhigang,
Lu Jun.
The previous editions of the standard replaced by this Standard were released
Symbols for cylindrical worm and wormwheel
1 Scope
This Standard specifies the symbols for cylindrical worm and wormwheel.
This Standard is applicable to the cylindrical worm gearing with a shaft angle
∑=90°, and its worm and wormwheel.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the versions with the dates indicated are
applicable to this document. For the undated references, the latest version
(including all the amendments) are applicable to this document.
GB/T 2821-2003 Gear - Symbols for geometrical data
3 Basic symbols for worm and wormwheel
3.1 Combination rules for basic symbols
The basic symbols for worm and wormwheel follow the requirements of 2.1 of
GB/T 2821-2003. The main rules are as follows.
a) The symbol consists of a main symbol or a main symbol plus one or more
subscripts or a superscript;
b) The main symbol can be a separate uppercase or lowercase letter. The
letters shall be italic Roman or Greek letters;
c) The subscript shall be a Roman letter or an Arabic numeral or a
combination of both;
d) All subscripts shall be marked on the same line and lower than the main
symbol;
e) Symbols with lines drawn (drawn above or below), superscripts other than
indices, pre-subscripts, pre-superscripts, secondary subscripts,
secondary superscripts, and dashes shall be avoided.
3.2 Main symbols