GB/T 971-2008 English PDF

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GB/T 971-2008: thread rolling cylindrical dies
Status: Valid

GB/T 971: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 971-2008	259	Add to Cart	3 days	thread rolling cylindrical dies	Valid
GB/T 971-1994	439	Add to Cart	4 days	Thread rolling cylindrical dies	Obsolete
GB 971-1983	279	Add to Cart	3 days	Thread rolling cylindrical dies	Obsolete

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Basic data

Standard ID: GB/T 971-2008 (GB/T971-2008)
Description (Translated English): thread rolling cylindrical dies
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J41
Classification of International Standard: 25.100.50
Word Count Estimation: 11,119
Date of Issue: 2008-06-03
Date of Implementation: 2009-01-01
Older Standard (superseded by this standard): GB/T 971-1994
Quoted Standard: GB/T 192; GB/T 193; GB/T 196; GB/T 197
Regulation (derived from): National Standard Approval Announcement 2008 No.9 (Total No.122)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the general type of silk thread with rolling wheels, basic requirements for marking and packaging, etc., dimensions and deviations, technical requirements. This standard applies to processing the common thread (GB/T 192 ~ 193, GB/T 196 ~ 197) of the rolling wheel. Rolling wheel is divided into three Accuracy class: 1, 2 and 3. A suitable machining tolerance class 4, external thread 5 of, 2 suitable for machining tolerance class 5, external thread class 6, 3 suitable for machining tolerance class 6, external thread 7 of.

GB/T 971-2008: thread rolling cylindrical dies

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
thread rolling cylindrical dies ICS 25.100.50 J41 National Standards of People's Republic of China Replacing GB/T 971-1994 Rolling round Posted 2008-06-03 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 971-1994 "rolling wheel." The standards and GB/T 971-1994 difference compared to the following. --- Increasing the foreword; 0.7,0.75,0.8; --- Deleted 3.4 Note ①, note ②, ③ Note contents. The standard proposed by China Machinery Industry Federation. This standard tool by the National Standardization Technical Committee (SAC/TC91) centralized. This standard was drafted. Chengdu Tool Institute. The main drafters of this standard. Deng Zhiguang, Nie Ke stars. This standard replaces the standards previously issued as follows. --- GB 971-1967, GB 971-1983, GB/T 971-1994. Rolling round

1 Scope

This standard specifies the basic requirements common thread with roller type wire wheels, dimensions and tolerances, technical requirements, marking and packaging and the like. This standard applies to the processing of common screw (GB/T 192 ~ 193, GB/T 196 ~ 197) of the rolling wheel. Rolling wheel is divided into three accuracy Level. Level 1, Level 2 and Level 3. Level 1 is for processing tolerance class 4, 5 of the external thread; Level 2 is suitable for machining tolerance class 5, 6 external threads; Level 3 is suitable for machining tolerance class 6, 7 of the external thread.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 192 ordinary screw threads - Basic model (GB/T 192-2003, ISO 68-1.1998, MOD) GB/T 193 series ordinary thread diameter and pitch (GB/T 193-2003, ISO 261.1998, MOD) GB/T 196 common thread basic size (GB/T 196-2003, ISO 724.1993, MOD) GB/T 197 common thread tolerance (GB/T 197-2003, ISO 965-1.1998, MOD)

3 rolling wheel types and dimensions

3.1 roller type wire wheel provisions in Figure 1 and Table 1. Note. The rolling wheels divided with a boss and without boss two kinds. Figure 1 Table 1 Type of rolling wheel in millimeters Type Hole keyway Type 45 45 0.025 0 + Model 54 54 0.030 0 + 12 + 0.36 + 0.12 47.9 + 0 0.62 57.5 + 0 0.74 Type 75 + 75 0.030 020 +0.42 +0.14 + 0.74 79.3 0 ......

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