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1、BRITISH STANDARD BS ISO 7388-1:2007 Tool shanks with 7/24 taper for automatic tool changers Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF ICS 25.060.20 ? Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Unc
2、ontrolled Copy, (c) BSI BS ISO 7388-1:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2007 ISBN 978 0 580 56721 6 National foreword This British Standard is the UK implementation of ISO 7388-1:2007. It supersedes BS
3、 6607-1:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provis
4、ions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:
5、31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 7388-1:2007(E) INTERNATIONAL STANDARD ISO 7388-1 Second edition 2007-08-01 Tool shanks with 7/24 taper for automatic tool changers Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF Queues doutils conici
6、t 7/24 pour changement automatique doutils Partie 1: Dimensions et dsignation des queues de formes A, AD, AF, U, UD et UF BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: Lon
7、don South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internationa
8、l Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO,
9、also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical commi
10、ttees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the po
11、ssibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7388-1 was prepared by Technical Committee ISO/TC 29, Small tools. This second edition cancels and replaces the first edition
12、 (ISO 7388-1:1983), which has been technically revised. It also incorporates the Addendum ISO 7388-1:1983/Add. 1:1984. ISO 7388 consists of the following parts, under the general title Tool shanks with 7/24 taper for automatic tool changers: Part 1: Dimensions and designation of shanks of forms A, A
13、D, AF, U, UD and UF Part 2: Dimensions and designation of shanks of forms J, JD and JF Part 3: Retention knobs for shanks of forms AC, AD, AF, UC, UD, UF, JD and JF BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncon
14、trolled Copy, (c) BSI iv Introduction The aim of ISO 7388 is to integrate existing standards which are most commonly used as an industrial standard. In addition, the different developments for cooling and data chip have been taken into account. BS ISO 7388-1:2007 Licensed Copy: London South Bank Uni
15、versity, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Tool shanks with 7/24 taper for automatic tool changers Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF 1 Scope This part of ISO 7388 specifies the dimensions of tool
16、 shanks with a 7/24 taper, of shank forms A, AD, AF, U, UD and UF (with two possible additions for each), for automatic tool changers, used on machines having an automatic gripping system for feeding tools from the magazine to the spindle and vice-versa. These tools are designed with the most import
17、ant dimensions for use in spindle noses according to ISO 9270. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
18、 (including any amendments) applies. ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications ISO 2768-2, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indications ISO 8015, Technical dr
19、awings Fundamental tolerancing principle 3 Dimensions 3.1 General All dimensions and tolerances are given in millimetres; tolerancing is according to ISO 8015. Tolerances not specified shall be of tolerance class “m” in accordance with ISO 2768-1 and of class “k” in accordance with ISO 2768-2. 3.2 S
20、hank forms A and U See Figure 1 and Table 1. BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 Key 1 cutting edge 2 transition between taper and flange a Position of the cutting edge for righ
21、t hand tools with single cutting edge. b At the option of the manufacturer (radius or chamfer). c At the manufacturers discretion. d Scale: 2:1. e Not convex. f Depth. 0,4. Figure 1 Shank forms A and U BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri
22、Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 Table 1 Dimensions of shanks of forms A and U Shank number 30 40 45 50 60 Form Dimension A U A U A U A U A U b 0,2 0 + 16,1 19,3 25,7 d1 a 31,75 44,45 57,15 69,85 107,95 d2 H7 13 17 21 25 32 d3 45 31,75 50 44,45 63 57,15 80 69,95 130 107,9
23、5 d3 tol. Max. 0,15 0,15 + Max. 0,15 0,15 + Max. 0,15 0,15 + Max. 0,15 0,15 + Max. 0,15 0,15 + d4 0 0,5 44,3 39,15 56,25 75,25 91,25 147,7 132,8 d5 0 0,1 50 46,05 63,55 82,55 97,5 98,5 155 139,75 d6 0,05 59,3 54,85 72,3 91,35 107,25 108,25 164,75 149,5 d7 6H M12 M16 M20 M24 M30 d11 max. 14,5 19 23,5
24、 28 36 d12 9,52 9,52 9,52 9,52 9,52 e min. 35 38 f b 15,9 j 0 0,3 15 18,5 24 30 49 l1 0 0,3 47,8 68,4 82,7 101,75 161,9 l2 min. 24 32 40 47 59 l3 min. 33,5 42,5 52,5 61,5 76 l4 0,5 0 + 5,5 8,2 10 11,5 14 l5 16,3 22,7 29,1 35,5 54,5 l5 tol. 0 0,3 0 0,4 l6 18,8 25 31,3 37,7 59,3 56,8 l6 tol. 0 0,3 0 0
25、,4 l7 0 0,5 1,6 2 r1 0,6 1,2 2 2,5 3,5 r1 tol. 0 0,3 0 0,5 r2 c 0 0,5 0,8 1 1,2 1,5 2 r3 0 0,5 1,6 2 t1 0,001 0,002 0,003 t2 0,002 0,003 0,004 t3 0,12 0,2 u 0 0,1 19,1 v 0,1 11,1 x 0,15 0 + 3,75 y 0,1 3,2 81750“ tol. 4“ 0 + a d1: basic diameter enclosed in a gauge plane. b For information only. c Ch
26、amfer or radius type of counterbore entrance are possible and limited by diameter d11. BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 3.3 Shank forms AD and UD As a complement to Forms A a
27、nd U, it is possible to add a through hole, e.g. for centric inner coolant supply, as indicated in Figure 2. Those forms are called AD (if provided on Form A) and UD (if provided with Form U). The condition is that d10 shall be less or equal to the core diameter of the thread receiving the retention
28、 knob. Figure 2 Shank forms AD and UD 3.4 Shanks forms AF and UF As a complement to shank forms A and U, it is possible to add two holes at the back of the flange for inner coolant supply, the dimensions of which are indicated in Figure 3 and Table 2. Those forms are called AF (if provided with Form
29、 A) and UF (if provided with Form U). For Forms AF and UF, if an auxiliary connecting bore is needed, it shall be sealed to withstand an operating pressure of up to 5 MPa, of a design that is at the manufacturers discretion. Figure 3 Shank forms AF and UF BS ISO 7388-1:2007 Licensed Copy: London Sou
30、th Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 Table 2 Supplementary dimensions of shanks of forms AF and UF Shank no. d9 max. e1 30 4 21 40 4 27 45 5 35 50 6 42 60 8 66 3.5 Shanks with data medium For the six forms specified in 3.2
31、 to 3.4, a data medium can be added, the dimensions of which are indicated in Figure 4 and Table 3. a Fitting position of the data medium: same position as the cutting edge for right-hand tools with a single cutting edge. b Other diameters and depth according to the data medium used. Figure 4 Fittin
32、g position of data medium Table 3 Supplementary dimensions for fitting of data medium cmax 0,3 45 or r 0,3 a d13 10 0,09 0 + l8 4,6 0,2 0 + a At the discretion of the manufacturer. 4 Information on material and heat treatment Tool shanks with a 7/24 taper should be heat treated with considerations f
33、or strength, hardness, case depth (if not through hardened). Toughness and wear requirements are to be taken into account. BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 6 5 Designation A to
34、ol shank with 7/24 taper in accordance with this part of ISO 7388 shall be designated as follows: a) “Tool shank”; b) reference to this part of ISO 7388, i.e. “ISO 7388-1”; c) a dash; d) Form A, U, AD, UD, AF or UF; e) the size; f) in the case of a design with data medium, a dash and the letter D. E
35、XAMPLE Designation of a tool shank with 7/24 in accordance with ISO 7388-1, Form A, shank no. 40 with fitting position for a data medium D: Tool shank ISO 7388-1 A 40 D BS ISO 7388-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, U
36、ncontrolled Copy, (c) BSI 7 Bibliography 1 ISO 9270 1), 7/24 tapers for tool shanks for automatic changing Tapers for spindle noses 1) It is intended that at the next revision, shanks of forms U, UD, UF, J, JD and LF will also be covered. BS ISO 7388-1:2007 Licensed Copy: London South Bank Universit
37、y, London South Bank University, Fri Oct 05 02:31:13 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS ISO 7388-1:2007 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on s
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