1、BRITISH STANDARD BS1089:1973 Specification for Workhead spindle noses for grinding machines: cylindrical external, internal and universal types UDC621.924-229.33BS1089:1973 This BritishStandard, having been approved by the MechanicalEngineering IndustryStandards Committee,was published underthe auth
2、ority of the Executive Board on 17 October1973 BSI12-1999 First published December1942 First revision October1973 The following BSI references relate to the work on this standard: Committee reference MEE/6, MEE/6/11 Draft for comment71/35606 ISBN 0 580 07535 4 Co-operating organizations The Mechanic
3、al Engineering Industry Standards Committee, under whose supervision this BritishStandard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: The Government departments and scientific and industrial organizations marked wit
4、h an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this BritishStandard: Associated Offices Technical Committee Engineering Equipment Users Association Association of Consulting Engineers Gas Council Association
5、of Hydraulic Equipment Institution of Civil Engineers Manufacturers Ltd. Institution of Gas Engineers Association of Mining Electrical and Institution of Heating and Ventilating Mechanical Engineers Engineers British Compressed Air Society Institution of Mechanical Engineers* British Electrical and
6、Allied Manufacturers Institution of Mechanical Engineers Association (Automobile Division) British Gear Manufacturers Association Institution of Plant Engineers British Internal Combustion Engine Institution of Production Engineers* Manufacturers Association London Transport Executive British Mechan
7、ical Engineering Confederation Machine Tool Trades Association* British Pump Manufacturers Association Ministry of Defence British Steel Industry Ministry of Defence, Army Department* Crown Agents for Oversea Governments and National Coal Board Administrations National Physical Laboratory (Departmen
8、t Department of Employment (H.M. Factory of Trade and Industry) Inspectorate) Process Plant Association Department of the Environment* Railway Industry Association of Great Britain Department of Trade and Industry Royal Institute of British Architects Department of Trade and Industry National Teleco
9、mmunications Engineering Engineering Laboratory* Manufacturing Association Electricity Council, the Central Electricity Generating Board and the Area Boards in England and Wales Association of Scientific, Technical and Society of Motor Manufacturers and Traders Managerial Staffs Trades Union Congres
10、s Gauge and Toolmakers Association University of Aston in Birmingham Machine Tool Industry Research Association University of Manchester, Institute of Science Ministry of Defence, Air Force Department and Technology National Federation of Engineers Tool Individual experts Manufacturers Amendments is
11、sued since publication Amd. No. Date of issue CommentsBS1089:1973 BSI 12-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 Dimensions 1 Figure 1 Screwed spindle nose 1 Figure 2 Flanged spindle nose 3 Table 1 Dimensions of screwed spindle noses 1 Table 2 Screw
12、 thread limits and tolerances based on ISO metric screw threads 2 Table 3 Dimensions of flanged spindle nose 4 Publications referred to Inside back coverBS1089:1973 ii BSI 12-1999 Foreword This BritishStandard has been prepared under the authority of the Mechanical Engineering Industry Standards Com
13、mittee. This second edition provides for two types of spindle noses, namely screwed and flanged. Certain features of the flanged spindle noses have been based on BS4442, “Lathe spindle noses and face plates”, Part1, “Types “A” and “Camlock” which itself is based on ISO/R702, “Spindle noses and face
14、plates. Type A and camlock. Sizes for interchangeability”. However, because of the accuracy requirements of grinding machines, a parallel register has been adopted in place of the taper register in BS4442. It is considered essential that the face plate should have a definite location against the spi
15、ndle flange thus avoiding the possibility of swash, which can occur when tightening a face plate onto a cone. In addition, this facilitates the final adjustment necessary to obtain the desired degree of concentricity on assembly. A flanged type of nose is being adopted down to the smallest size whic
16、h will permit the front fixing of chucks. For the smaller sizes, screwed spindle noses have been adopted. 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 Sta
17、ndard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporate
18、d. This will be indicated in the amendment table on the inside front cover.BS1089:1973 BSI 12-1999 1 1 Scope This BritishStandard specifies dimensions for spindle noses for grinding machines of cylindrical external, internal and universal types including plain grinding machines with live spindles. T
19、wo types of spindle noses are specified. These are screwed spindle noses, and flanged spindle noses with parallel register diameters. NOTEThe titles of the BritishStandards referred to in this standard are listed on the inside back cover. 2 Dimensions Spindle noses shall conform to the dimensions gi
20、ven in Table 1, Table 2 or Table 3, whichever is appropriate. Table 1 Dimensions of screwed spindle noses (seeFigure 1) Figure 1 Screwed spindle nose 1 2 3 4 5 6 7 8 9 10 11 12 Spindle nose size no. Morse taper no. A B Tolerance h4 a D Tolerance h4 a E F G H J K L At45 mm mm mm mm mm mm mm mm mm mm
21、1 1 60 35.000 34.993 25.000 24.994 10 10 3 10 12 3 2 2 2 65 40.000 39.993 30.000 29.994 12 10 4 16 20 3 2 3 3 75 50.000 49.992 40.000 39.992 12 10 4 16 20 3 2 4 4 100 75.000 74.990 65.000 64.992 16 16 5 25 25 3 3 NOTE 1The run-out of diameters B and D with respect to the axis of rotation shall not e
22、xceed0.0025mm FIM (full indicator movement). NOTE 2The run-out of the taper bore with respect to the axis of rotation shall not exceed0.0025mm FIM. NOTE 3The axial run-out of face M with respect to the axis of rotation shall not exceed0.0025mm FIM. NOTE 4The error in squareness of face M with respec
23、t to the axis of rotation shall not exceed0.0013 over its annular width. a SeeBS4500BS1089:1973 2 BSI 12-1999 Table 2 Screw thread limits and tolerances based on ISO metric screw threads BS3643-3:1967, Tolerance class6g (to mate with internal threads tolerance class6H) (seeFigure 1) 1 2 3 4 5 6 7 8
24、9 Spindle nose size no. Nominal diameter of thread C Pitch Major diameter Effective diameter Minor diameter Max. Min. Max. Min. Max. Min. 1 mm 30 mm 2 mm 29.962 mm 29.682 mm 28.663 mm 28.493 mm 27.508 mm 27.194 2 36 3 35.952 35.577 34.003 33.803 32.271 31.855 3 48 3 47.952 47.577 46.003 45.791 44.27
25、1 43.843 4 72 4 71.940 71.465 69.342 69.106 67.033 66.509 NOTE 1The screw threads will be right handed unless specially ordered otherwise. NOTE 2The slack fitting thread is intentional in order to allow the mating member to sit on the double registers without interference from distorted or inaccurat
26、e threads.BS 1089:1973 BSI 12-1999 3 Figure 2 Flanged spindle noseBS 1089:1973 4 BSI 12-1999 Table 3 Dimensions of flanged spindle nose (seeFigure 2) 1 2 3 4 5 6 7 8 9 10 Size no. Flange Initial Register (seeNote5) Radius of outer bolt hole circle Radius of inner bolt hole circle Thread diameter Dia
27、meter Width Diameter Tolerance on diameter Width Max. 45 Chamfer A B C g6 a D E F G H J mm mm mm mm mm mm mm mm mm 3 92 16 53.0 0.010 0.029 11 35.3 M10 14 1.0 4 108 20 63.0 0.010 0.029 11 41.3 M10 17 1.0 5 133 22 82.0 0.012 0.034 14 52.4 30.95 M10 19 1.5 6 165 25 106.0 0.012 0.034 15 66.7 41.3 M12 2
28、2 1.5 8 210 28 140.0 0.014 0.039 17 85.7 55.55 M16 25 1.5 11 280 35 200.0 0.015 0.044 19 117.5 82.55 M20 32 1.5 15 380 42 285.0 0.017 0.049 20 165.1 123.8 M22 37 3 NOTE 1The run-out of register diameter C with respect to the axis of rotation shall not exceed0.0025mm FIM. NOTE 2The radial and circumf
29、erential positions of the threaded holes shall be within 0.015 of nominal. NOTE 3The axial run-out of flange face M with respect to the axis of rotation shall not exceed0.0025 FIM. NOTE 4The error in squareness of flange face M with respect to the axis of rotation shall not exceed0.0013 over its ann
30、ular width. NOTE 5This is to facilitate assembly onto the machine. The final register is achieved by checking with a dial indicator and tightening up against the flange. a See BS4500.BS1089:1973 BSI 12-1999 Publications referred to This standard makes reference to the following BritishStandards: BS3
31、643, ISO metric screw threads. BS3643-3, Limits and tolerances for fine pitch threads (constant pitch series). BS4500, ISO limits and fits. BSI Certification Trade Mark The Kitemark The BritishStandards Institution is the owner of a registered certification trade mark. It is usually associated with
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