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GB/T 17984-2010 English PDF

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GB/T 17984-2010: Twist drills -- Technical specifications
Status: Valid

GB/T 17984: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 17984-2010English329 Add to Cart 3 days [Need to translate] Twist drills -- Technical specifications Valid GB/T 17984-2010
GB/T 17984-2000English519 Add to Cart 4 days [Need to translate] Twist drills-Technical specifications Obsolete GB/T 17984-2000

PDF similar to GB/T 17984-2010


Standard similar to GB/T 17984-2010

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Basic data

Standard ID GB/T 17984-2010 (GB/T17984-2010)
Description (Translated English) Twist drills -- Technical specifications
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J41
Classification of International Standard 25.100.30
Word Count Estimation 14,165
Date of Issue 2010-11-10
Date of Implementation 2011-03-01
Older Standard (superseded by this standard) GB/T 17984-2000
Quoted Standard GB/T 1438.1; GB/T 1438.2; GB/T 1438.3; GB/T 1438.4; GB/T 1443; GB/T 1804; GB/T 6135.1; GB/T 6135.2; GB/T 6135.3; GB/T 6135.4
Regulation (derived from) National Standard Approval Announcement 2010 No.8 (Total No.163)
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 level of precision twist and twist dimensions, material and hardness, appearance and surface roughness, logo and packaging technology requirements. This standard applies by GB/T 6135. 1 ~ 6135. 4 and GB/T 1438. 1 ~ 1438. 4 twist manufactured by various processes (rolling process is not suitable for the manufacture of precision grade twist). According to the agreement between the twist can also refer to other uses. This standard does not apply to self -occupied and twist drills.

GB/T 17984-2010: Twist drills -- 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.
Twist drills. Technical specifications ICS 25.100.30 J41 National Standards of People's Republic of China Replacing GB/T 17984-2000 Twist technical conditions Issued on. 2010-11-10 2011-03-01 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 17984-2000 "Twist technical conditions." This standard and GB/T 17984-2000 compared to the main changes are as follows. --- Modify the normative references, cancel the normative references cited in the standard year; --- Revised 4.2 twist drill diameter working part taper down. To "0.02mm ~ 0.08mm" every length to 100mm "0.02mm ~ 0.12mm"; --- Revised 4.3, "its shank diameter tolerance f11" be replaced by "its shank diameter tolerance allowed for the f11"; --- Revised 4.5, "on the next adjacent basic dimensions twist length" with the words "on the basic scale within the next adjacent twist length Inch"; --- Modify the general level 4.9.1 twist groove indexing error in Figure 6; --- Revised 4.11, twist drill core allowed increment "Allow" to "should"; --- Amend 4.12, increasing the general level of twist blade width of 9 and notes, and an increase in the formula in Appendix B. will Precision Twist Drill primary blade width of 9 to 10; --- Revised 5.1, high speed steel does not set specific grade; --- 5.3.2 revised working part hardness, 5.3.3 whole twist drill shank hardness, hardness 5.3.4 taper flat tail, the original HV Increased hardness HRC hardness basis; --- Added Appendix B, all the charts and formulas under all moved to Appendix B in the formula and unified index is a decimal Three significant number of points. According to GB/T 17984-2000 "Twist technical conditions" amendments No. 1, to read as follows. --- 5.3.2, "790HV ~ 900HV" to "780HV ~ 900HV"; --- Appendix A, Table A.1 No. 3, "the central contact against the cutting edge," to "close contact against the cutting corner Edge on. " The Standard Appendix A, Appendix B are informative appendices. The standard proposed by China Machinery Industry Federation. This standard tool by the National Standardization Technical Committee (SAC/TC91) centralized. This standard is drafted by. Shanghai Tool Works Co., Ltd., Chengdu Tool Research Institute, Chengdu into a tool Group Co., Ltd., a Henan Tools Co., Ltd., Beijing Capital Industrial Logistics Limited. The main drafters of this standard. Li Zheng Wei, Chen Liping, Chen Shichang, Zhao Jianmin, Chen Lun, Fan Yingjie. This standard replaces the standards previously issued as follows. --- GB/T 17984-2000. Twist technical conditions

1 Scope

This standard specifies the general level of precision twist and twist size, material and hardness, appearance and surface roughness, marking and packaging Technical requirements. This standard applies to press GB/T 6135.1 ~ 6135.4 and twist GB/T 1438.1 ~ 1438.4 with a variety of manufacturing process (rolling Molding process suitable for manufacturing precision twist), according to the agreement between, can also refer to the use of other twist. This standard does not apply to wood Workers drilling and homemade own twist.

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 1438.1 taper shank twist drills - Part 1. Morse taper shank twist types and dimensions GB/T 1438.2 taper shank twist drills - Part 2. Morse taper shank long series twist types and dimensions GB/T 1438.3 taper shank twist drills - Part 3. Morse taper shank twist drills lengthened types and dimensions GB/T 1438.4 taper shank twist drills - Part 4. Morse taper shank long twist types and dimensions GB/T 1443 used machine tools and tool shank taper from folder GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance GB/T 6135.1 straight shank twist drills - Part 1. coarse straight shank types and dimensions small twist GB/T 6135.2 straight shank twist drills - Part 2. Straight shank twist drill short and straight shank twist types and dimensions GB/T 6135.3 straight shank twist drills - Part 3. shank long twist drill types and dimensions GB/T 6135.4 straight shank twist drills - Part 4. Straight shank long twist drill types and dimensions

3 Symbol

d twist drill diameter Total length l l1 length of the channel Radial δr working part of the shank axis runout δk core drilling on the symmetry axis of the working part δh oblique cutting edge runout of the working portion axis δd trench indexing error Kmin minimum web thickness Recommended values \u200b\u200bof the land width fG Upper limit fU blade width of Lower limit fL width of the blade

4 Dimensions

4.1 twist drill diameter tolerance according to GB/T 6135.1 ~ 6135.4 and GB/T 1438.1 - 1438.4 of the regulations.

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