BS 1660-7-1988 Machine tapers - Specification for extension adaptors with external 7 24 tapers for tools with Morse taper shanks《机用圆锥 第7部分 莫氏锥柄刀具用7 24外锥度的加长适配器规范》.pdf

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BS 1660-7-1988 Machine tapers - Specification for extension adaptors with external 7 24 tapers for tools with Morse taper shanks《机用圆锥 第7部分 莫氏锥柄刀具用7 24外锥度的加长适配器规范》.pdf_第1页
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1、BRITISH STANDARD BS 1660-7: 1988 Machine tapers Part 7: Specification for extension adaptors with external 7/24 tapers for tools with Morse taper shanks UDC621.9 229.22.224.322BS1660-7:1988 This British Standard, having been prepared under the directionof the Machine, Engineers and Hand Tools Standa

2、rds Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 30 September 1988 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference MTE/7 Draft for comment 87/77517 DC ISBN 0 580 16633 3 Committees responsible for this Briti

3、sh Standard The preparation of this British Standard was entrusted by the Machine, Engineers and Hand Tools Standards Committee (MTE/-) to Technical Committee MTE/7, upon which the following bodies were represented: Gauge and Tool Makers Association Institution of Production Engineers Milling Cutter

4、 Association Twist Drill and Reamer Association Advanced Manufacturing Technology Research Institute Amendments issued since publication Amd. No. Date of issue CommentsBS1660-7:1988 BSI 07-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 General 1 Figure 1 Exten

5、sion adaptor 2 Table 1 Dimensions of extension adaptors 2 Publications referred to Inside back coverBS1660-7:1988 ii BSI 07-1999 Foreword This Part of BS 1660 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Committee. Other Parts of BS 1660 currently publishe

6、d are as follows. Part 1: Specification for shanks and sockets with self-holding tapers (Morse and metric 5 %); Part 2: Specification for reduction sleeves and extension sockets for tools with Morse taper shanks; Part 3: Specification for turret sockets and reduction sleeves with tapped ends for too

7、ls with Morse taper shanks; Part 4: Specification for spindle noses and tool shanks with self-release 7/24 tapers; Part 5: Specification for adaptors with 7/24 internal and external tapers; Part 6: Specification for adaptors with external 7/24 tapers for tools with Morse taper shanks; Part 8: Specif

8、ication for collar dimensions for 7/24 taper tool shanks and equipment; Part 9: Specification for cotter slots; Part 10: Specification for drill chuck tapers (Jacob and short Morse). BS 1660-1 to BS 1660-10 collectively supersede BS 1660:1972 which is withdrawn. A British Standard does not purport t

9、o include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover,

10、 pagesi andii, pages1 and2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS1660-7:1988 BSI 07-1999 1 1 Scope This Part of BS 1660 specifies

11、dimensions and tolerances for extension adaptors (collets) with external 7/24 tapers for sizes 30, 40, 45, 50, 55 and60 and internal Morse taper sizes 1 to 5. NOTE 1Size 55 tapers are non-preferred. NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover

12、. 2 General 2.1 General dimensions and tolerances 2.1.1 The general dimensions of extension adaptors shall be in accordance with Table 1. 2.1.2 The dimensions and tolerances for the Morse taper shall be identical with those given in BS 1660-1 for the appropriate Morse taper. 2.1.3 The dimensions and

13、 tolerances for the 7/24 taper shall be identical with those given in BS 1660-4 for the appropriate 7/24 taper. 2.2 Tolerance on concentricity The tolerance on the concentricity of the axis of the bore with the external taper shall be 0.025 mm FIM. 2.3 Designation An adaptor shall be designated by i

14、ts external taper and internal taper, in that order. Example. The designation of an adaptor with external 7/24 taper 40 and internal Morse taper 2 is as follows: 7 24 -40M.T.2 BS1660-7:1988 2 BSI 07-1999 Table 1 Dimensions of extension adaptors (see Figure 1) Figure 1 Extension adaptor 1 2 3 4 5 6 7

15、 8 7/24 taper no. Length L D D 1 D 2 Extension E d Morse taper size mm mm mm mm mm mm 30 157 31.75 31.75 23 90 12.062 1 170 25 102 17.78 2 40 179 44.45 44.45 23 90 12.062 1 193 25 103 17.78 2 212 30 122 23.825 3 45 219 57.15 57.15 25 118 17.78 2 238 35 138 23.825 3 256 40 153 31.267 4 50 259 69.85 6

16、9.85 35 132 23.825 3 284 40 148 31.267 4 (55) 326 88.9 88.9 40 161 31.267 4 359 56 194 44.399 5 60 368 107.95 107.95 40 161 31.267 4 400 56 193 44.399 5 NOTEThe size in parenthesis is non-preferred.BS1660-7:1988 BSI 07-1999 Publications referred to BS 1660, Machine tapers. BS 1660-1, Specification f

17、or shanks and sockets with self-holding tapers (Morse and metric 5 %). BS 1660-4, Specification for spindle noses and tool shanks with self-release 7/24 tapers. BS 1660-7: 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible fo

18、r preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or edi

19、tions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the in

20、side front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be add

21、ressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of

22、 information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:020

23、89967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all

24、BSI publications. BSI also holds the copyright, in the UK, of the publications of the internationalstandardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means elect

25、ronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.

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