1、BRITISH STANDARD BS 6607-3: 1993 ISO 9270:1992 Tool shanks with 7/24 taper for automatic tool changers Part 3: Specification for tapers for spindle noses UDC 621.9.022-229.2BS6607-3:1993 This British Standard, having been prepared under the directionof the Machine, Engineers and Hand Tools Standards
2、 Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15July1993 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference MTE/7 Draft for comment 87/74986 DC ISBN 0 580 22413 9 Committees responsible for this Britis
3、h Standard The preparation of this British Standard was entrusted by the Machine, Engineers and Hand Tools Standards Policy Committee (MTE/-) to Technical Committee MTE/7, upon which the following bodies were represented: Advanced Manufacturing Technology Research Institute British Engineers Cutting
4、 Tools Association Gauge and Tool Makers Association Coopted members Amendments issued since publication Amd. No. Date CommentsBS6607-3:1993 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Conicity toleran
5、ces 1 Annex A (informative) Bibliography 4 Figure 1 2 Table 1 3 List of references Inside back coverBS6607-3:1993 ii BSI 08-1999 National foreword This Part of BS 6607 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee, and is identical with ISO
6、9270:1992 7/24 tapers for tool shanks for automatic changing Tapers for spindle noses published by the International Organization for Standardization (ISO). ISO 9270 was prepared by ISO Technical Committee39, Machine Tools. It is a third Part of an intended new series of Parts of BS6607. The Technic
7、al Committee has reviewed the provisions of ISO 898-1:1988, ISO7338-3 1)and ISO 9524:1992 to which reference is made in the text and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contra
8、ct. 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, pages i and ii, pages1 to 4, an inside back cover
9、 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. Cross-references International Standard Corresponding British Standard ISO 297:1988 BS 1660 Machine tapers Part 4:
10、1989 Specification for spindle noses and tool shanks with self-release 7/24 tapers (Identical) ISO 1947:1973 BS 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 from6mm to 630mm (Identical) ISO 4762:1989 BS 4
11、168 Hexagon socket screws and wrench keys: metric series Part 1:1981 Specification for hexagon socket head cap screws (Technically equivalent) BS 6607 Toolshanks with 7/24 taper for automatic tool changers ISO 7388-1:1983 Part 1. Specification for shanks Nos. 40, 45 and 50 (Identical) ISO 7388-2:198
12、4 Part 2. Specification for retention knobs for shanks Nos.40, 45 and 50 (Identical) 1) In preparation.BS6607-3:1993 BSI 08-1999 1 1 Scope This International Standard specifies the dimensions and tolerances of tenons and 7/24 tapers for machine-tool spindle noses for automatic changing, intended for
13、 use with the corresponding tool shanks specified in ISO7388-1 and ISO7388-3. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid.
14、All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standa
15、rds. ISO 297:1988, 7/24 tapers for tool shanks for manual changing. ISO 898-1:1988, Mechanical properties of fasteners Part 1: Bolts, screws and studs. ISO 1947:1973, System of cone tolerances for conical workpieces from C = 1 : 3 to 1 : 500 and lengths from 6 to 630 mm. ISO 4762:1989, Hexagon socke
16、t head cap screws Product grade A. ISO 7388-1:1983, Tool shanks with 7/24 taper for automatic tool changers Part 1: Shanks Nos. 40, 45 and 50 Dimensions. ISO 7388-3:, Tool shanks with 7/24 taper for automatic tool changers Part 3: Retention knobs for shank No. 30 Dimensions, conicity tolerances and
17、mechanical characteristics 2) . ISO 9524:1992, Machine tools Front faces of spindle holders for machining centres Functional dimensions 2) . 3 Dimensions SeeFigure 1 andTable 1. 4 Conicity tolerances The conicity tolerances shall conform with the cone angle tolerance grade AT4 specified in ISO1947.
18、These values shall be negative. 2) To be published.BS6607-3:1993 2 BSI 08-1999 Figure 1 BS6607-3:1993 BSI 08-1999 3 Table 1 Dimensions in millimetres Taper a,b Tenon slot Designation No. D 1 z l 1 D 2 m u b 1 v c O 1 O 2 e g 2 l 4 l 6 c min. d min. 0,2 30 31,75 0,2 47,4 12,5 2 15,9 0,06 8 17 19,5 25
19、 M6 7 9 40 44,45 0,2 64,4 16 2 15,9 0,06 8 23,5 26 33 M6 7 9 45 57,15 0,2 81,8 18 2 19 0,06 9,5 30 32,5 40 M8 7 12 50 69,85 0,2 100,8 19 2 25,4 0,08 12,5 36,5 38,5 49,5 M12 7 18 a When cutter mounting on the spindle is required, the tolerance on D 2should be h5. For mounting dimensions, D 2 , m and
20、u, seeISO 297. b When connecting blocks in accordance with ISO 9524 are used, the maximum values for D 2shall be 100 for taper shank No. 40 and 130 for taper shanks Nos. 45 and 50. c D 1is the basic diameter contained in the gauge plane. d b 1is the dimension of the tenon assembly in the slot: fit,
21、M6-h5. Tenon slot Tenon a Designation No. r a 1 a 2 a 3 n k h d 4 d 5 d 6 q s l 2 l 3 l 5 Fixing screw max. b max. max. min. 0,1 c 30 1,6 2,5 30,6 19,4 16,5 13,5 24,5 10,4 6,4 2,6 6,2 1,6 11,1 4 5,5 M6 25 40 1,6 2,5 39,35 26,65 16,5 16,5 24,5 10,4 6,4 2,6 6,2 1,6 13,35 4 7 M6 25 45 1,6 2,5 47,1 32,9
22、 16,5 17,5 26 13,4 8,4 2,6 10 1,6 14,6 4 7,5 M8 25 50 2 2,5 59,25 39,75 16,5 24 29 19 13 2,6 12,3 2 20,75 4 11 M12 30 a Tenon hardness (58 2) HRC. b Stop pins of diameter a 1 , and dimensions a 2 , a 3 , l 2 , l 3 , l 4and d 6 , are optional. c Screws conform with both ISO 4762 and ISO 898-1, class8
23、.8. 0 0,2BS6607-3:1993 4 BSI 08-1999 Annex A (informative) Bibliography 1 ISO 7388-2:1984, Tool shanks with7/24 taper for automatic tool changers Part 2: Retention knobs for shanks Nos.40, 45 and50 Dimensions and mechanical characteristics.BS6607-3:1993 BSI 08-1999 List of references See national fo
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