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 BS ISO 7388-1:2007 This British Standard was published under the authority of the Standards Policy and Strategy Comm
2、ittee 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 It supersedes BS 6607-1:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools. A list o
3、f organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal
4、obligations. Amendments issued since publication Amd. No. Date Comments 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
5、 Queues doutils conicit 7/24 pour changement automatique doutils Partie 1: Dimensions et dsignation des queues de formes A, AD, AF, U, UD et UF BS ISO 7388-1:2007ii iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO membe
6、r bodies). The work of preparing International 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, governmenta
7、l and non-governmental, in liaison with ISO, 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 Directi
8、ves, Part 2. The main task of technical committees 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
9、 casting a vote. Attention is drawn to the possibility 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 e
10、dition cancels and replaces the first edition (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: Dimen
11、sions and designation of shanks of forms A, AD, 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 7388-1:2007iv Introduction The aim of ISO 7388 is to integrate existing standards w
12、hich 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 7388-1:20071 Tool shanks with 7/24 taper for automatic tool changers Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD an
13、d UF 1 Scope This part of ISO 7388 specifies the dimensions of tool 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 sp
14、indle and vice-versa. These tools are designed with the most important 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. Fo
15、r undated references, the latest edition of the referenced document (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 featu
16、res without individual tolerance indications ISO 8015, Technical drawings 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 wi
17、th ISO 2768-1 and of class “k” in accordance with ISO 2768-2. 3.2 Shank forms A and U See Figure 1 and Table 1. BS ISO 7388-1:20072 Key 1 cutting edge 2 transition between taper and flange aPosition of the cutting edge for right hand tools with single cutting edge. bAt the option of the manufacturer
18、 (radius or chamfer). cAt the manufacturers discretion. dScale: 2:1. eNot convex. fDepth. 0,4. Figure 1 Shank forms A and U BS ISO 7388-1:20073 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 d 1a31,75 44,45 57,15 6
19、9,85 107,95 d 2H7 13 17 21 25 32 d 345 31,75 50 44,45 63 57,15 80 69,95 130 107,95 d 3tol. 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 + d 4 0 0,5 44,3 39,15 56,25 75,25 91,25 147,7 132,8 d 5 0 0,1 50 46,05 63,55 82,55 97,5 98,5 155 139,75 d 6 0,05 59,3 54,85 7
20、2,3 91,35 107,25 108,25 164,75 149,5 d 76H M12 M16 M20 M24 M30 d 11max. 14,5 19 23,5 28 36 d 12 9,52 9,52 9,52 9,52 9,52 e min. 35 38 fb15,9 j 0 0,3 15 18,5 24 30 49 l 1 0 0,3 47,8 68,4 82,7 101,75 161,9 l 2min. 24 32 40 47 59 l 3min. 33,5 42,5 52,5 61,5 76 l 4 0,5 0 +5,5 8,2 10 11,5 14 l 516,3 22,7
21、 29,1 35,5 54,5 l 5tol. 0 0,3 0 0,4 l 618,8 25 31,3 37,7 59,3 56,8 l 6tol. 0 0,3 0 0,4 l 7 0 0,5 1,6 2 r 1 0,6 1,2 2 2,5 3,5 r 1tol. 0 0,3 0 0,5 r 2c 0 0,5 0,8 1 1,2 1,5 2 r 3 0 0,5 1,6 2 t 10,001 0,002 0,003 t 20,002 0,003 0,004 t 30,12 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“ to
22、l. 4“ 0 +ad 1 : basic diameter enclosed in a gauge plane. bFor information only. cChamfer or radius type of counterbore entrance are possible and limited by diameter d 11 . BS ISO 7388-1:20074 3.3 Shank forms AD and UD As a complement to Forms A and U, it is possible to add a through hole, e.g. for
23、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 d 10shall be less or equal to the core diameter of the thread receiving the retention knob. Figure 2 Shank forms AD and UD 3.4 Shanks form
24、s 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 A) and UF (if provided with Form U). For Forms AF an
25、d 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 7388-1:20075 Table 2 Supplementary dimensions of shanks of forms AF and UF Shank no. d 9ma
26、x. e 130 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 to 3.4, a data medium can be added, the dimensions of which are indicated in Figure 4 and Table 3. aFitting position of the data medium: same position as the cutting edge for right-hand tools
27、 with a single cutting edge. bOther diameters and depth according to the data medium used. Figure 4 Fitting position of data medium Table 3 Supplementary dimensions for fitting of data medium c max0,3 45 or r 0,3 ad 1310 0,09 0 +l 84,6 0,2 0 +a At the discretion of the manufacturer.4 Information on
28、material and heat treatment Tool shanks with a 7/24 taper should be heat treated with considerations for strength, hardness, case depth (if not through hardened). Toughness and wear requirements are to be taken into account. BS ISO 7388-1:20076 5 Designation A tool shank with 7/24 taper in accordanc
29、e 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. EXAMPLE Designation of a tool shank wi
30、th 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 7388-1:20077 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
31、, shanks of forms U, UD, UF, J, JD and LF will also be covered. BS ISO 7388-1:2007BS 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 standards in Eu
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