GB/T 4247-2017 English PDFUS$114.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 4247-2017: Machine bridge reamers with Morse taper shanks Status: Valid GB/T 4247: Historical versions
Basic dataStandard ID: GB/T 4247-2017 (GB/T4247-2017)Description (Translated English): Machine bridge reamers with Morse taper shanks Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J41 Classification of International Standard: 25.100.30 Word Count Estimation: 6,672 Date of Issue: 2017-12-29 Date of Implementation: 2018-07-01 Older Standard (superseded by this standard): GB/T 4247-2004 Regulation (derived from): National Standards Bulletin 2017 No. 32 Issuing agency(ies): General Administration of Quality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 4247-2017: Machine bridge reamers with Morse taper shanks---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.Machine bridge reamers with Morse taper shanks ICS 25.100.30 J41 National Standards of People's Republic of China Replacing GB/T 4247-2004 Morse taper machine bridge reamer (ISO 2238.2011, Machinebridge registries, IDT) 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 4247-2004 "Morse taper shank bridge reamer." Compared with GB/T 4247-2004, except editorial repair Change the main technical changes are as follows. --- Modify the normative references; --- text symbols Reamer diameter d, total length L, the blade length l by the standard symbols d1, l3, l2 instead; --- Deleted in Table 1 in inch size. This standard uses the translation method identical with ISO 2238.2011 "Machine Bridge Reamer." The documents of our country that are consistent with the corresponding international documents that are normative references in this standard are as follows. Self - clamping cones for machine tools and tools shanks (ISO 296.1991, MOD). This standard made the following editorial changes. --- Change the standard name; --- Corrected ISO 2238.2011 Table 1 Note l1 and l2 editing errors, "l1 and l2 tolerance" to "l2 and l3 of the public Poor ", after the corresponding letters have been modified. This standard is proposed by the China Machinery Industry Federation. This standard by the National Standardization Technical Committee Tool (SAC/TC91) centralized. This standard was drafted by Chengdu Institute of Tool Co., Ltd. The main drafters of this standard. Zeng Yuhuan, Deng Zhiguang. This standard replaces the standards previously issued as. --- GB/T 4247-1984, GB/T 4247-2004. Morse taper machine bridge reamer1 ScopeThis standard specifies the type and size of Morse taper shank bridge reamers. This standard is given in millimeters diameter range d1 from 6mm to 50.8mm bridge reamer the following dimensions. --- Total length l3; --- Total cutting edge length l2; --- Taper cutting edge length l1. Unless otherwise specified, these reamers are made right-cut.2 Normative referencesThe 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. ISO 296 machine tools and tool shanks with self-clamping cone (Machinetools-Self-holdingtapersfortoolshanks)3 type and size3.1 General provisions Morse taper shank bridge reamer type and size shown in Figure 1 and Table 1. Description. 1 --- taper 1.10; 2 --- Morse taper shank according to ISO 296; a --- taper 1.10, approximately equivalent to the open angle of 5 ° 45 '. Figure 1 Morse taper shank bridge reamer dimensions ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4247-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 4247-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 4247-2017_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4247-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
