1、BRITISH STANDARD BS 5326:1976 Internal broaching tools and pull chuck locations UDC 621.919.3.025BS5326:1976 This British Standard, having been prepared under the directionof the Mechanical Engineering Industry Standards Committee was published underthe authority of the Executive Board on 30 April 1
2、976 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference MEE/6 Draft for comment 74/75822 DC ISBN 0 580 09095 7 Co-operating organizations The Mechanical Engineering Industry Standards Committee, under whose supervision this British Standard was prepared,
3、 consists of representatives from the following Government departments and professional and industrial organizations: The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British St
4、andard. Associated Offices Technical Committee Federation of Manufacturers of Association of Consulting Engineers Construction Equipment and Cranes Association of Hydraulic Equipment Health and Safety Executive (HM Factory Manufacturers Ltd Inspectorate) Association of Mining Electrical and Institut
5、ion of Gas Engineers Mechanical Engineers Institution of Heating and Ventilating British Compressed Air Society Engineers British Electrical and Allied Manufacturers Institution of Mechanical Engineers* Association Institution of Plant Engineers British Gas Corporation Institution of Production Engi
6、neers British Gear Manufacturers Association London Transport Executive British Internal Combustion Engine Machine Tool Trades Association* Manufacturers Association Ministry of Defence* British Mechanical Engineering National Coal Board Confederation National Engineering Laboratory British Pump Man
7、ufacturers Association Department of Industry British Steel Corporation Process Plant Association British Steel Industry Railway Industry Association of Department of the Environment* Great Britain Department of Industry* Royal Institute of British Architects Department of Trade Society of Motor Man
8、ufacturers Electricity Supply Industry in England and Traders* and Wales Telecommunication Engineering and Engineering Equipment Users Association Manufacturing Association Association of Scientific Technical and National Federation of Engineers Tool Managerial Staffs Manufacturers Ball and Roller B
9、earing Manufacturers University of Manchester Institute of Association Science and Technology Gauge and Tool Makers Association Individual experts Machine Tool Industry Research Association Amendments issued since publication Amd. No. Date of issue CommentsBS5326:1976 BSI 12-1999 i Contents Page Co-
10、operating organizations Inside front cover Foreword ii 1 Scope 1 2 Reference 1 3 Pull and tail ends of internal broaches 1 4 Pull chuck locations 1 Figure 1 Broach shank 1 Figure 2 Dimensions for pull chuck locations 3 Table 1 Dimensions of shanks of internal broaches 2 Publication referred to Insid
11、e back coverBS5326:1976 ii BSI 12-1999 Foreword This British Standard has been prepared under the authority of the Mechanical Engineering Industry Standards Committee. It is based on proposals submitted by the Machine Tool Trades Association. It should be noted that broaching machines are dealt with
12、 in the BS4656 “The accuracy of machine tools and methods of test” series of standards. A 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
13、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 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be
14、 indicated in the amendment table on the inside front cover.BS5326:1976 BSI 12-1999 1 1 Scope This standard specifies a range of nominal shank dimensions for both the pull and tail ends of internal broaches for use on broaching machines, vertical type. The standard specifies certain dimensions for l
15、ocating the pull chuck in the pull block of broaching machines, vertical internal type. The constant dimension between the top of the pull block and the platen surface is also given. The standard is particularly applicable to automatic handling of broaching tools. 2 Reference The title of the Britis
16、h Standard referred to in this standard is given on inside back cover. 3 Pull and tail ends of internal broaches 3.1 Dimensions. The shanks of both the pull and tail ends of broaches shall be of the form indicated inFigure 1 and conform to the dimensions given inTable 1. The overall length of the br
17、oach shall depend on the particular application. The flat machined to dimension “G” is only used when the radial position of broach to workpiece is important. 3.2 Material and surface texture. The material of the broach and the surface texture of the shanks are left to the discretion of the manufact
18、urer, but shall be consistent with the safe and efficient use of the broach. 3.3 Designation. Broach shanks complying with the requirements of this standard shall be designated by the number of the standard and the nominal shank diameter, e.g. BS5326-20. 4 Pull chuck locations 4.1 Dimensions. The di
19、mensions for the location of the pull chuck in the pull block and the relationship of the pull block to the platen shall be in accordance withFigure 2. 4.1.1 Platen. The upper face of the machine platen forms the fixture location face. To obtain interchangeability of the tooling between various mach
20、ines, the height from the top of the platen to the end of the broach should be common. This upper face, therefore, forms the datum face for dimensions given in this standard. The thickness of the platen may vary with the capacity of the machines but sufficient space shall be provided to allow adequa
21、te swarf clearance between chuck and platen. If necessary the platen shall be relieved to provide this clearance. 4.1.2 Pull block. The pull block houses the pull chuck. The dimensions, given inFigure 2, between the platen and pull block are the constant distances with the ram at the top of its stro
22、ke. The thickness of the pull block may vary with the capacity of the machine. Spacing collars should be used to accommodate the variations in thickness. 4.1.3 Radial location of the pull chuck. A positive method of radially locating the pull chuck shall be provided. This feature is utilized when th
23、e radial position of broach to workpiece is important. The location shall be from the flat machined on the pull chuck shank. NOTEThe method of location is not specified in this standard, but a typical method is illustrated inFigure 2. Pull block, pull chuck and broach location flats (ifprovided) sha
24、ll be positioned to face the front of the machine as shown inFigure 2. *Before flat is machined. Figure 1 Broach shankBS5326:1976 2 BSI 12-1999 Table 1 Dimensions of shanks of internal broaches All dimensions are in millimetres 1 2 3 4 5 6 7 8 9 10 A B C D E F G H J K tol.h11 a tol.g7 a tol.g7 a 6 7
25、 8 9 10 11 12 14 16 18 20 22 25 28 32 36 40 45 50 56 63 70 4.5 5.0 5.5 6.5 7.5 8.0 9.0 10.0 11.0 13.0 15.0 16.5 19.0 21.0 24.0 27.0 30.0 34.0 38.0 42.0 48.0 53.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 22.0 22.0 22.0 22.0 30.0 30.0 30.0 30.0 30.0 28.0 28.0 28.0 28.0 28.0 28.
26、0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 32.0 32.0 32.0 32.0 38.0 38.0 38.0 38.0 38.0 1.00 1.00 1.00 1.00 2.00 2.00 2.00 3.00 3.00 3.00 3.00 3.00 3.00 3.50 3.50 3.50 3.50 8.00 8.00 8.00 8.00 8.00 110 110 110 110 110 110 110 110 110 110 110 110 110 115 115 115 115 140 140 140 140 140 5.25 6.00 6.75 7.75
27、8.75 9.50 10.50 12.00 13.50 15.50 17.50 19.25 22.00 24.50 28.00 31.50 35.00 39.50 44.00 49.00 55.50 61.50 95 95 95 95 95 95 95 95 95 95 95 95 95 100 100 100 100 125 125 125 125 125 5.8 6.8 7.8 8.8 9.8 10.8 11.5 13.5 15.5 17.5 19.5 21.5 24.5 27.5 31.5 35.5 39.5 44.5 49.5 55.5 62.5 69.5 1 1 1 1 1 1 1
28、1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 a Tolerance to BS 4500.BS5326:1976 BSI 12-1999 3 Figure 2 Dimensions for pull chuck locations4 blankBS5326:1976 BSI 12-1999 Publication referred to This standard makes reference to the following British Standard: BS 4500, ISO limits and fits. BS 5326:1976 BSI 389 Chiswi
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