GB/T 34632-2017 English PDF

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GB/T 34632-2017: The blank diameters for rolling unified screw threads
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34632-2017	199	Add to Cart	3 days	The blank diameters for rolling unified screw threads	Valid

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Basic data

Standard ID: GB/T 34632-2017 (GB/T34632-2017)
Description (Translated English): The blank diameters for rolling unified screw threads
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 21.040.01
Word Count Estimation: 10,194
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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

GB/T 34632-2017: The blank diameters for rolling unified screw threads

---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.
The blank diameters for rolling unified screw threads ICS 21.040.01 J04 National Standards of People's Republic of China Uniform thread rubbing and roughing before the rough diameter 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard by the National Standardization Technical Committee threaded (SAC/TC108) and focal point. This standard was drafted unit. Binke Precision Components (China) Co., Ltd., machine Productivity Promotion Center, Guangdong Institute of Metrology, Ning Boning High Strength Fastener Co., Ltd. The main drafters of this standard. Dapeng, Li Xiaobin, Liang Ping, Xu Yong. Uniform thread rubbing and roughing before the rough diameter

1 Scope

This standard specifies the uniform thread rubbing and rolling before the blank diameter size. Unified thread nominal diameter range of 0.0600in ~ 2.0000in (1/4in after only the first series of diameter; teeth series have UNC, UNF, UNEF, 8UN, 12UN and 16UN six Species, the minimum number of teeth is 6 teeth); thread tolerance with 2A and 3A two. This standard applies to the whole tooth extrusion process of carbon steel and alloy steel material uniform thread. Note. "All-tooth extrusion process" refers to the processing of a thread-forming material that completely fills the underside of the cutter tooth space during thread extrusion.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14791 thread terminology JB/T 8824.6-2012 Uniform thread cutting tools Part 6. Thread rolling plate JB/T 8824.7-2012 Uniform thread cutting tools - Part 7 - Thread rolling wheels Unified Thread Gauges and Testing Type and size of ASMEB 47.1-2007 gauges

3 Terms and definitions

GB/T 14791 defined terms and definitions apply to this document.

4 blank diameter formula

The formulas for calculating the diameter of rubbing and rolling thread blanks shall comply with the provisions of Appendix A.

5 rough diameter diameter size

Uniform thread rolling and rolling before the rough diameter diameter size should be consistent with the provisions of Table 1.

6 thread tool accuracy grade

A uniform thread of 2A and 3A tolerance should be machined with a class 1 precision tool. Unified thread rolling plate and rolling wheel size should be consistent with the provisions of JB/T 8824.6-2012 and JB/T 8824.7-2012.

7 rough diameter adjustment

7.1 Recommended drawing or grinding process rough diameter. When using turning technology processing rough, the blank diameter should be specified in Table 1 ......

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