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GB/T 15055-2021 PDF EnglishUS$155.00 · In stock · Download in 9 seconds
GB/T 15055-2021: Permissible stamping variations in dimensions without tolerance indication Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 15055: Evolution and historical versions
Excerpted PDFsFull copy of true-PDF will be delivered in 9 seconds upon purchase: GB/T 15055-2021Similar standardsGB/T 13916 GB/T 13914 GB/T 15825.5 GB/T 32151.18GB/T 15055-2021: Permissible stamping variations in dimensions without tolerance indication---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT15055-2021NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.020 CCS J 32 Replacing GB/T 15055-2007 Permissible stamping variations in dimensions without tolerance indication Issued on. OCTOBER 11, 2021 Implemented on. MAY 01, 2022 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Tolerance grades... 9 5 Limit deviation of dimensions without tolerance indication... 9 6 Representation method for grades of tolerances without indication... 101 ScopeThis document specifies linear and angular dimension tolerance grades and limit deviations of stamping pieces without tolerance indication. This document applies to metal stamping pieces. Non-metal stamping pieces may refer to this document. The limit deviations specified in this document apply to non-fitted dimensions.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 8541, Terminology of forging and stamping3 Terms and definitionsFor the purposes of this document, the terms and definitions defined in GB/T 8541 as well as the followings apply. 3.1 blanking size The linear dimensions of stamping pieces processed by blanking, punching and other separation processes (see D, d, s1, s2 in Figure 1). 3.2 forming size The linear dimensions of stamping pieces processed by bending, deep drawing and other forming processes (see l1, l2, d1, h, h1 in Figure 2 and Figure 3). 3.3 blanking corner radius The linear dimension of the corner radius of the stamping piece processed by blanking, punching and other separation processes (see R in Figure 4). 3.4 forming corner radius The linear dimension of the corner radius of the stamping part processed by bending, deep drawing and other forming processes (see r, r1, r2, r3 in Figure 2 and Figure 3). 3.5 blanking angle At the plane of the flat or formed piece, the angular dimension formed by blanking (see α in Figure 4)4 Tolerance gradesThe limit deviation of blanking size without tolerance indication, forming size without tolerance indication, blanking corner radius size without tolerance indication, blanking angle size without tolerance indication and bending angle size without tolerance indication are divided into f, m, c, v, four descending tolerance grades.5 Limit deviation of dimensions without tolerance indication5.1 Limit deviation of blanking size without tolerance indication The limit deviation of blanking size without tolerance indication shall be specified in Table 1. 5.2 Limit deviation of forming size without tolerance indication The limit deviation of forming size without tolerance indication shall be specified in Table 2. 5.3 Limit deviation of corner radius size without tolerance indication 5.4 Limit deviation of angular size without tolerance indication6 Representation method for grades of tolerances without indicationUse the limit deviation of the size without tolerance indication specified in this document. In the corresponding drawings, technical documents or files, this document's number and tolerance grade symbol are used. For example, when selecting the level-m tolerance grade in this document, it is expressed as. GB/T 15055-m. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Photos/Images: Iamge 1 Iamge 2 Iamge 3 |
