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GB/T 1184-1996 (GB/T1184-1996)

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GB/T 1184-1996: PDF in English (GBT 1184-1996)

GB/T 1184-1996
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Eqv ISO 2768-2.1989
Replacing GB 1184-80
Geometrical tolerancing - Geometrical tolerance
for features without individual tolerance indication
ISSUED ON. DECEMBER 18, 1996
IMPLEMENTED ON. JULY 01, 1997
Issued by. China State Bureau of Technical Supervision
Table of Contents
Foreword ... 3 
ISO Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Definitions ... 5 
4 General ... 5 
5 Without individual tolerance indication ... 6 
6 Indications on drawings ... 8 
7 Noted tolerance ... 9 
8 Rejection ... 9 
Annex A (informative) Concepts and explanation of geometrical tolerancing
feature without individual tolerance indications ... 10 
Annex B (informative) Stipulation for the noted tolerance on the drawing ... 16 
Foreword 
This Standard is an amendment of GB 1184-80 Geometrical tolerance --
Geometrical tolerance for features without individual tolerance indications,
according to international standard ISO 2768-2.1989 General geometrical
tolerance - Part II. Geometrical tolerances for features without individual
tolerance indications. This Standard is equivalent to ISO 2768-2 technically.
This Standard is equivalent to ISO 2768-2, and at the same time, keeps the
stipulation of GB 1184 about noted tolerance value considering the
practicability of the standard as annex B; it is combining two annexes of ISO
2768-2 as one annex A.
Compared with the year-1980 standard, this Standard has significant
difference. all the listed items without individual tolerance indications,
classification of the tolerance grade AND tolerance for features without
individual tolerance indications are conforming to ISO 2768-2; so it is
completely different to the previous GB 1184-80 value system.
This Standard mainly contains definition, geometrical tolerance -- geometrical
tolerance for features without individual tolerance indications, indications on
drawings, tolerance for features without individual tolerance indications in
special occasions AND geometrical tolerance with individual tolerance
indication.
This Standard shall be implemented from July 01, 1997, at the same time, it
replaces GB 1184-80.
The Annex A and Annex B are for information only.
This Standard was proposed by Ministry of Machinery Industry of P. R. China.
This Standard shall be under the jurisdiction of National Tolerance and Fits
Standardization Technical Commission.
Drafting organization of this Standard. Mechanical Standardization Institute of
Ministry of Machinery Industry of P. R. China.
Drafters of this Standard. Zhou Zhong and Wang Kai.
National Standard of the People’s Republic of China
Geometrical tolerancing - Geometrical tolerance GB/T 1184-1996
for features without individual tolerance indication eqv ISO 2768-2.1989
Replacing GB 1184-80
1    Scope 
This Standard mainly applies to features which are produced by removal of
material. Its application to features manufactured by other processes is
possible; however, special examination is required to ascertain whether the
customary workshop accuracy lies within the without individual tolerance
indications specified in this Standard.
2    Normative references 
The following standards contain the provisions which, through the reference in
this text, constitute the provisions of this Standard. At the time of publication,
the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this Standard are encouraged to investigate
the possibility of applying the most recent editions of the standards indicated
below.
GB/T 1182-1996 Geometrical tolerancing - Generalities, definitions, symbols,
indications on drawings
GB/T 1804-92 General tolerances - Tolerances for linear dimensions without
individual tolerance indications
GB/T 4249-1996 Tolerancing principle
3    Definitions   
For the purposes of this Standard, the definitions for geometrical tolerances
given in GB/T 1182 apply.
4    General 
When selecting the tolerance class, the respective customary workshop
accuracy has to be taken into consideration. If smaller geometrical tolerances
are required or larger geometrical tolerances are permissible and more
......
 
(Above excerpt was released on 2016-10-01, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GBT1184-1996