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GB/T 1438.4: Historical versions
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| GB/T 1438.4-2008 | English | 139 |
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Taper shank twist drills -- Part 4: The types and dimensions extra-long for Morse taper shank twist drills
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| GB/T 1438.4-1996 | English | 199 |
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Taper shank twist drills--Part 4: The types and dimensions for extra-long Morse taper shank twist drills
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Basic data
| Standard ID | GB/T 1438.4-2008 (GB/T1438.4-2008) |
| Description (Translated English) | Taper shank twist drills -- Part 4: The types and dimensions extra-long for Morse taper shank twist drills |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J41 |
| Classification of International Standard | 25.100.30 |
| Word Count Estimation | 6,684 |
| Date of Issue | 2008-11-04 |
| Date of Implementation | 2009-04-01 |
| Older Standard (superseded by this standard) | GB/T 1438.4-1996 |
| Quoted Standard | GB/T 1443 |
| Adopted Standard | ISO 3291-1995, MOD |
| Regulation (derived from) | National Standard Approval Announcement 2008 No.18 (Total No.131) |
| 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 Morse taper shank long twist types and dimensions. This section applies to a diameter of 6. 00 mm ~ 50. 00 mm and a total length of 200. 00 mm ~ 630. 00 mm long with Morse taper shank twist. |
GB/T 1438.4-2008: Taper shank twist drills -- Part 4: The types and dimensions extra-long for Morse taper shank twist drills
---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.
Taper shank twist drills Part 4. The types and dimensions extra-long for Morse taper shank twist drills
ICS 25.100.30
J41
National Standards of People's Republic of China
Replacing GB/T 1438.4-1996
Taper shank twist drill
Part 4. Morse taper shank long twist drill
The type and size
(ISO 3291.1995, Extra-longMorsetapershankdrils, MOD)
Posted 2009-04-01 2008-11-04 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 1438 "taper shank twist" is divided into four parts.
--- Part 1. Morse taper shank twist type and size;
--- Part 2. Morse taper shank long series twist types and dimensions;
--- Part 3. Morse taper shank twist drills lengthened types and dimensions;
--- Part 4. Morse taper shank long twist types and dimensions.
This section GB/T 1438 Part 4.
The partial modification of the use of ISO 3291.1995 "Morse taper shank long twist" (in English).
This section according to ISO 3291.1995 re-drafted.
This part of ISO 3291.1995 compared to the following technical differences and editorial changes.
--- Remove the foreword to international standards;
--- Used instead of using decimal comma ",". ",";
--- "This International Standard" by "this section";
--- To Tables 1 and 2 were synthesized in a table;
--- Increase the marked sample;
--- Remove Appendix A.
This Part replaces GB/T 1438.4-1996 "taper shank twist drills - Part 4. Morse taper shank long twist types and dimensions."
This portion of the GB/T 1438.4-1996 compared to the following technical corrections.
--- Increasing the foreword;
--- "This standard" to "this Part";
--- Increasing the overall length of 200.00mm ~ 630.00mm requirements in scope;
--- Figure 1, increasing the horizontal edge line;
--- Table 1 diameter size range were modified;
--- The 4.3 "high performance" to "precision."
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. Chengdu Tool Research Institute, Chengdu into a tool Limited Group.
The main drafters of this section. Deng Zhiguang, Zeng Yu ring, Wu Rong.
This part of the standard replaces the previous editions are.
--- GB 6137-1985, GB/T 1438.4-1996.
Taper shank twist drill
Part 4. Morse taper shank long twist drill
The type and size
1 Scope
GB/T 1438 provisions of this part of the Morse taper shank long twist types and dimensions.
This section applies to a diameter of 6.00mm ~ 50.00mm and an overall length of 200.00mm ~ 630.00mm Morse taper shank long hemp
Flowers diamond.
2 Normative references
The following documents contain provisions which, through reference to GB/T 1438 to the present, 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 1443 from machine tools and tool handles with clip cone (GB/T 1443-1996, eqv ISO 296.1991)
3 Symbol
4 type and size
4.1 Morse taper shank long twist type, size according to Figure 1 and Table 1 of the regulations.
Figure 1
...
