GB/T 16770.2-2008 English PDF

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GB/T 16770.2-2008: Solid hardmetal end mills with parallel shank -- Part 2: Technical specifications
Status: Valid

GB/T 16770.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 16770.2-2008	149	Add to Cart	2 days	Solid hardmetal end mills with parallel shank -- Part 2: Technical specifications	Valid
GB/T 16770.2-1997	199	Add to Cart	3 days	Solid hardmetal end mills with parallel shank. Part 2: Technical specifications	Obsolete

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Basic data

Standard ID: GB/T 16770.2-2008 (GB/T16770.2-2008)
Description (Translated English): Solid hardmetal end mills with parallel shank -- Part 2: Technical specifications
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J41
Classification of International Standard: 25.100.20
Word Count Estimation: 5,532
Date of Issue: 2008-06-03
Date of Implementation: 2009-01-01
Older Standard (superseded by this standard): GB/T 16770.2-1997
Quoted Standard: GB/T 2075; GB/T 6118-1996
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 solid carbide straight shank end mill dimensions, materials, appearance and surface roughness, logo and packaging of technical conditions. This section applies to a diameter of 1 mm to 20 mm straight shank cutter.

GB/T 16770.2-2008: Solid hardmetal end mills with parallel shank -- Part 2: Technical specifications

---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.
Solid hardmetal end mills with parallel shank Part 2. Technical specifications ICS 25.100.20 J41 National Standards of People's Republic of China Replacing GB/T 16770.2-1997 Solid carbide straight shank end mill Part 2. Technical requirements 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

GB/T 16770 "Solid carbide straight shank end mill" is divided into two parts. --- Part 1. Dimensions; --- Part 2. Technical requirements. This section GB/T 16770 Part 2. This part is GB/T 16770.2-1997 "Solid carbide straight shank end mills - Part 2. Technical Specifications" amendments. Section compared with the GB/T 16770.2-1997 The main changes are as follows. --- The technical specification to technical conditions; --- Modify the normative references; --- Job to work part of the cylindrical portion of the inverted taper; --- Material selection code is not specified in detail; --- Made some changes to the appearance of the requirements; --- Canceled the performance test. This part is proposed by China Machinery Industry Federation. This part of the tool by the National Standardization Technical Committee (SAC/TC91) centralized. This section is drafted. Shanghai Tool Works Co., Ltd. The main drafters of this section. Zhang, Li Zheng Wei. This part of the standard replaces the previous editions are. --- GB/T 16770.2-1997. Solid carbide straight shank end mill Part 2. Technical requirements

1 Scope

This section GB/T 16770 specifies the solid carbide straight shank end mill (hereinafter referred to as end mills) the size, material, appearance, and tables Surface roughness, marking and packaging of technical conditions. This section applies to a diameter of 1mm ~ 20mm straight shank cutter.

2 Normative references

The following documents contain provisions which, through reference GB/T 16770 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 2075 Classification and use of cutting large groups and groups of application of hard cutting materials classification code (GB/T 2075- 2007, ISO 513.2004, IDT) GB/T 6118-1996 mills technical specifications

3 Dimensions

End mill according to the shape and position tolerances specified in Table 1. Table 1 millimeters Radial circumferential edge of the shank axis runout End edge of the end face runout working portion axis inverted taper shank ~ 6 0.012 0.006 > 6-12 > 12 ~ 20 0.020 0.010 0.020 0.010 0.011 0.015 NOTE. runout detection method according to GB/T 6118-1996 the provisions of Appendix A.

4 Materials

Carbide material according to GB/T 2075 selection.

5 appearance and surface roughness

5.1 milling cutter cutting edge should be sharp and should not have an impact chipping, microcracks and other performance deficiencies. 5.2 the upper limit of the surface roughness of the end mill according to the following provisions. --- Tooth front and rear. Rz3.2μm; --- Cylindrical shank. Ra0.4μm. ......

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