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GB/T 1184-1996 PDF EnglishSearch result: GB/T 1184-1996_English: PDF (GB/T1184-1996)
GB/T1184-1996 (GBT1184-1996): PDF in EnglishGB/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 .......Source: https://www.ChineseStandard.net/PDF.aspx/GBT1184-1996 |