BS 1660-1-1992 ISO 296-1991.pdf

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1、BRITISH STANDARD BS 1660-1: 1992 ISO 296:1991 Machine tapers Part 1: Specification for shanks and sockets with self-holding tapers (Morse and metric 5 %) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 This British Standard, h

2、aving been prepared under the direction of the Machine Engineers and Hand Tools Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 31 January 1992 BSI 08-1999 First published September 1988 Second edition January 1992 The following BSI refer

3、ences relate to the work on this standard: Committee reference MTE/7 Special announcement in BSI News October 1991 ISBN 0 580 20362 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Machine Engineers and Hand Tools Standards Policy Commi

4、ttee (MTE/-) to Technical Committee MTE/7, upon which the following bodies were represented: Advanced Manufacturing Technology Research Institute Federation of British Engineers Tool Manufacturers Gauge and Tool Makers Association Milling Cutter Association Twist Drill and Reamer Association Amendme

5、nts issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 BSI 08-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normative reference1 3Conicity

6、tolerances1 4Dimensions2 Figure 12 Figure 23 Table 1 Tapers1 Table 2 Nos. 0 to 6 Morse tapers and 5 % metric tapers4 Table 3 Nos. 1 to 6 Morse tapers and Nos. 1 to 3 Brown and Sharpe tapers5 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 G

7、MT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 ii BSI 08-1999 National foreword This Part of BS 1660 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee and implements agreements of the International Organization for Standardization (IS

8、O). It is identical with ISO 296:1991 “Machine tools Self-holding tapers for tool shanks” prepared by Technical Committee ISO/TC 39, Machine Tools. It is a revision of BS 1660-1:1988 to harmonize requirements with the current International Standard. It supersedes BS 1660-1:1988 which is withdrawn. A

9、 British Standard does not purport to 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. Cross-reference International StandardCorr

10、esponding British Standard ISO 1947:1973BS 4500 ISO limits and fits Part 5:1988 Specification for system of cone tolerances for conical work pieces from c = 1 : 3 to 1 : 500 and lengths from 6 mm to 630 mm (Identical) Summary of pages This document comprises a front cover, an inside front cover, pag

11、es i and ii, pages 1 to 6, 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. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT

12、+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 BSI 08-19991 1 Scope This International Standard specifies the dimensions of self-holding tapers for tool shanks with a small taper of about 4 % to 5 %, classified, according to their use, into the three following catergories: a) tapers for gene

13、ral use; b) smaller tapers; c) larger tapers. For the first category, tapers recommended by ISO are Nos. 1 to 6 Morse tapers. Their standard sizes in millimetres are given in Table 2, and the corresponding sizes in inches are given in Table 3. For smaller and larger tapers, those recommended by ISO

14、are, on the one hand, Nos. 4 and 6 metric 5 % tapers and No. 0 Morse taper, and on the other hand, Nos. 80 to 200 metric 5 % tapers, the sizes of which, in millimetres only, are given in Table 2. However, it was agreed to include in parallel, in the category of small tapers, Nos. 1 to 3 Brown b) for

15、 sizes below No. 1 Morse taper, two solutions, i.e. either Nos. 4 and 6 metric tapers and No. 0 Morse taper (without corresponding tapers in inches in Table 3) or, alternatively, Nos. 1 to 3 Brown c) for sizes above No. 6 Morse taper, only Nos. 80 to 200 metric tapers (without corresponding tapers i

16、n inches in Table 3). Table 1 Tapers This International Standard provides, for those elements which are threaded, two entirely distinct types of product according to the type of thread, M or UNC. In order to distinguish between those two types, it is important that the element itself be marked with

17、the corresponding thread symbol and the type of taper symbol, as shown in the figures in clause 4. Lastly, this International Standard specifies the dimensions of grooves and holes necessary for the design of tapers for applications where coolant supply is required. 2 Normative reference The followi

18、ng standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encourag

19、ed to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1947:1973, System of cone tolerances for conical workpieces from C = 1 : 3 to 1 : 500 and lengths from 6 to

20、 630 mm. 3 Conicity tolerances The cone angle tolerances shall be those given in ISO 1947 for quality AT5, and shall be positive on the external taper and negative on the internal taper. For special applications, other cone angle tolerances in accordance with ISO 1947 may be chosen. Designation Size

21、s in millimetres Sizes in inches Small tapers Nos. 4 and 6 metric and No. 0 Morse Nos. 1 to 3 Brown & Sharpe Tapers for general use Nos. 1 to 6 Morsea Large tapers Nos. 80 to 200 metric a Except for threads, Nos. 1 to 6 Morse tapers, manufactured either to metric values or to inch values, are strict

22、ly interchangeable, though not absolutely identical. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 2 BSI 08-1999 4 Dimensions Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrol

23、led Copy, (c) BSI BS 1660-1:1992 BSI 08-19993 Figure 2 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 4 BSI 08-1999 Table 2 Nos. 0 to 6 Morse tapers and 5 % metric tapers Dimensions in millimetres Designation Metric tapers Mo

24、rse tapersMetric tapers 46012345680100120160200 Taper ratio1 : 20 = 0,05 0,624 6 : 12 = 1 : 19,212 = 0,052 05 0,598 58 : 12 = 1 : 20,047 = 0,049 88 0,599 41 : 12 = 1 : 20,02 = 0,049 95 0,602 35 : 12 = 1 : 19,922 = 0,050 2 0,623 26 : 12 = 1 : 19,254 = 0,051 94 0,631 51 : 12 = 1 : 19,002 = 0,052 63 0,

25、625 65 : 12 = 1 : 19,18 = 0,052 14 1 : 20 = 0,05 External taper D a D1 D2 d d1 d2 d3 d4 d8 d9 d10 l1 l2 l3 l4 l7 l8 l11 l12 p b c e i R r t a a b a max. max. max. max. max. max. h13 c max. min. max. max. 4 2 4,1 2,9 2,5 23 25 2 6 3 6,2 4,4 4 32 35 3 9,045 3 9,2 6,4 6,1 6 6 50 53 56,5 59,5 3,9 6,5 10

26、,5 4 1 4 12,065 3,5 12,2 9,4 M6 9 8,7 9 6,4 8 8,5 53,5 57 62 65,5 4 3,3 5,2 8,5 13,5 16 5 1,2 5 17,78 5 18 15 14,6 M10 14 13,5 14 10,5 12,5 13,2 64 69 75 80 20 34 5 27 4,2 6,3 10 16 24 6 1,6 5 23,825 5 24,1 21 19,8 M12 19,1 18,5 19 13 15 17 81 86 94 99 29 43 5,5 36 5 7,9 13 20 24 7 2 7 31,267 6,5 31

27、,6 26 25,9 M16 25,2 24,5 25 17 20 22 102,5 109 117,5 124 39 55 8,2 47 6,8 11,9 16 24 32 8 2,5 9 44,399 6,5 44,7 40 37,6 M20 36,5 35,7 35,7 21 26 30 129,5 136 149,5 156 51 69 10 60 8,5 15,9 19 29 40 12 3 10 63,348 8 63,8 56 53,9 M24 52,4 51 51 26 31 11,5 182 190 210 218 81 99 11,5 90 10,2 19 27 40 47

28、 18 4 16 80 8 80,4 70,2 M30 69 67 67 196 204 220 228 26 24 48 59 24 5 24 100 10 100,5 88,4 M36 87 85 85 232 242 260 270 32 28 58 70 30 5 30 120 12 120,6 106,6 M36 105 102 102 268 280 300 312 38 32 68 70 36 6 36 160 16 160,8 143 M48 141 138 138 340 356 380 396 50 40 88 92 48 8 48 200 20 201 179,4 M48

29、 177 174 174 412 432 460 480 62 48 108 92 60 10 60 Internal taper d5 d6 d7 l5 l6 l9 l10 l13 g h p z H11 min. min. A13 d 3 25 21 2,2 8 0,5 4,6 34 29 3,2 12 0,5 6,7 52 49 3,9 15 1 9,7 7 56 52 5,2 19 1 14,9 11,5 19,5 67 62 22 32 27 6,3 22 4,2 1 20,2 14 24,5 84 78 31 41 36 7,9 27 5 1 26,5 18 32 107 98 4

30、1 53 47 11,9 32 6,8 1 38,2 23 44 135 125 53 67 60 15,9 38 8,5 1 54,8 27 63 188 177 83 97 90 19 47 10,2 1 71,5 33 202 186 26 52 1,5 90 39 240 220 32 60 1,5 108,5 39 276 254 38 70 1,5 145,5 52 350 321 50 90 2 182,5 52 424 388 62 110 2 a For D1 and d or d2, approximate values are given for guidance. (T

31、he actual values result from the actual values of a and l1 or l3 respectively, taking into account the taper ratio and the basic size D.) b d 1 is the nominal thread diameter: either a metric thread M with standard pitch or, if expressly stated, a UNC thread (seeTable 3 for inch sizes). In every cas

32、e, the appropriate symbol M or UNC shall be marked on the component. c It is permissible to increase the length c over which the tenon is turned to diameter d3, but without exceeding e. d z is the maximum permissible deviation, outwards only, of the position of the gauge plane related to the basic s

33、ize D from the nominal position of coincidence with the leading face. 0 0.1 0 0.1 0 0.1 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1:1992 BSI 08-19995 Table 3 Nos. 1 to 6 Morse tapers and Nos. 1 to 3 Brown & Sharpe tapers Dimens

34、ions in inches Designation Brown & Sharpe tapersMorse tapers 123123456 Taper ratio 0,502 : 12 = 1 : 23,904 = 0,041 83 0,502 : 12 = 1 : 23,904 = 0,041 83 0,502 : 12 = 1 : 23,904 = 0,041 83 0,598 58 : 12 = 1 : 20,047 = 0,049 88 0,589 41 : 12 = 1 : 20,02 = 0,049 95 0,602 35 : 12 = 1 : 19,922 = 0,050 2

35、0,623 26 : 12 = 1 : 19,254 = 0,051 94 0,631 51 : 12 = 1 : 19,002 = 0,052 63 0,625 65 : 12 = 1 : 19,18 = 0,052 14 External taper D a D1 D2 d d1 d2 d3 d4 d8 d9 d10 l1 l2 l3 l4 l7 l8 l11 l12 p b c e i R r t a a b a max. max. max. max. max. max. h12 c max. min. max. max. 0,239 22 3/32 0,243 14 0,2 0,189

36、 54 11/64 11/64 15/16 1 1/32 1 3/16 1 9/32 0,125 1/4 0,381 3/16 1/32 1/8 0,299 68 3/32 0,303 6 0,25 0,236 93 7/32 7/32 1 3/16 1 9/32 1 1/2 1 19/32 0,156 2 5/16 0,455 3/16 1/32 1/8 0,375 25 3/32 0,379 17 0,312 5 0,296 81 9/32 9/32 1 1/2 1 19/32 1 7/8 1 31/32 0,187 5 3/8 0,532 3/16 3/64 1/8 0,475 1/8

37、0,481 2 0,393 7 0,369 UNC 1/4 0,353 4 11/32 11/32 0,251 97 0,314 96 0,334 64 2 1/8 2 1/4 2 7/16 2 9/16 19/32 1 3/16 0,157 48 1/8 0,203 1 11/32 0,52 1/2 3/16 3/64 3/16 0,7 3/16 0,709 4 0,590 6 0,572 UNC 3/8 0,553 3 17/32 17/32 0,413 38 0,492 12 0,519 68 2 9/16 2 3/4 2 15/16 3 1/8 25/32 1 11/32 0,196

38、85 1,062 99 11/64 0,25 13/32 0,66 3/4 1/4 1/16 3/16 0,938 3/16 0,947 4 0,826 8 0,778 UNC 1/2 0,752 9 23/32 23/32 0,511 81 0,590 55 0,689 29 3 3/16 3 3/8 3 11/16 3 7/8 1 9/64 1 19/64 0,216 53 1,417 32 13/64 0,312 5 17/32 0,83 0,944 88 9/32 5/64 1/4 1,231 1/4 1,244 1,102 4 1,02 UNC 5/8 0,990 8 31/32 3

39、1/32 0,669 29 0,787 4 0,866 14 4 1/16 4 5/16 4 5/8 4 7/8 1 17/32 2 3/16 0,322 83 1,850 39 9/32 0,468 7 5/8 0,96 1 1/4 5/16 3/32 1/4 1,748 1/4 1,761 2 1,574 8 1,475 UNC 5/8 1,438 8 1 13/32 1 13/32 0,826 77 1,023 62 1,181 1 5 3/16 5 7/16 5 7/8 6 1/8 2 2 23/32 0,393 7 2,362 2 21/64 0,625 3/4 1,15 1 1/4

40、 0,472 44 1/8 5/16 2,494 1/16 2,510 3 2,204 7 2,116 UNC 1 2,063 9 2 2 1,023 62 1,220 47 1,417 32 7 1/4 7 9/16 8 1/4 8 9/16 3 3/16 3 29/32 0,452 75 3,543 3 13/32 0,75 1 1/16 1,58 1,850 4 0,708 66 5/32 3/8 Internal taper d5 d6 d7 l5 l8 l9 l10 l13 g h p z H11 min. min. H12 d 0,203 1 29/32 0,141 13/32 0

41、,04 0,255 1 1/4 1 1/8 0,172 9/16 0,04 0,319 1 9/16 1 13/32 0,203 23/32 0,04 0,378 9/32 17/32 2 3/16 2 1/16 43/64 1 1/16 0,223 3/4 1/8 0,039 3 0,588 7/16 49/64 2 21/32 2 1/2 7/8 1 17/64 1,062 99 0,27 7/8 11/64 0,0393 0,797 9/16 31/32 3 9/32 3 1/16 17/32 1 39/64 1,417 32 0,333 1 1/8 13/64 0,039 3 1,04

42、4 11/16 1 17/64 4 5/32 3 7/8 1 39/64 2 3/32 1,850 39 0,493 1 1/4 9/32 0,039 3 1,502 11/16 1 47/64 5 5/16 4 15/16 2 3/32 2 41/64 2,362 2 0,65 1 1/2 21/64 0,039 3 2,157 48 1 1/18 2 31/64 7 3/8 7 3 17/64 3 13/16 3,543 3 0,78 1 7/8 13/32 0,039 3 a For D 1 and d or d2, approximate values are given for gu

43、idance. (The actual values result from the actual values of a and l1 or l3 respectively, taking into account the taper ratio and the basic size D.) b d1 is the nominal thread diameter: either a UNC thread or, if expressly stated, a metric thread M with standard pitch (seeTable 2 for metric sizes). I

44、n every case, the appropriate symbol UNC or M shall be marked on the component. c It is permissible to increase the length c over which the tenon is turned to diameter d 3, but without exceeding e. d z is the maximum permissible deviation, outwards only, of the position of the gauge plane related to

45、 the basic size D from the nominal position of coincidence with the leading face. 0 0.004 0 0.004 0 0.004 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006,

46、 Uncontrolled Copy, (c) BSI BS 1660-1:1992 BSI 08-1999 Publication(s) referred to See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 06:15:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1660-1: 1992 ISO 296:1991 BSI 389 Chiswick High Road London W4 4AL BSI British Standa

47、rds Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Sta

48、ndards should make sure that they possess the latest amendments or editions. 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 British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an ind