BS 978-1-1968 Fine pitch gears
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ID： |
82FAAC8F47194F0C96E60071AC796334 |
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文件大小(MB)： |
0.81 |
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页数： |
36 |
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文件格式： |
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日期： |
2010-10-4 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BRITISH STANDARD,CONFIRMED,AUGUST 1990,BS 978-1:1968,Incorporating,Amendment No. 1,Specification for,Fine pitch gears —,Part 1: Involute Spur and Helical Gears,UDC 621.833.1,BS 978-1:1968,This British Standard, having,been approved by the,Mechanical Engineering,Industry Standards,Committee and endorsed by,the Chairman of the,Engineering Divisional,Council, was published under,the authority of the General,Council on,31 January 1968,. BSI 10-1999,First published October 1941,First revision January 1952,Second revision November 1962,Third revision January 1968,The following BSI references,relate to the work on this,standard:,Committee reference MEE/17,MEE/17/4,Draft for comment 66/14936,ISBN 580 00028 1,Co-operating organizations,The Mechanical Engineering Industry Standards Committee, under whose,supervision this British Standard was prepared, consists of representatives,from the following Government departments and scientific and industrial,organizations:,The Government department and scientific and industrial 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,standard:,Associated Offices’ Technical Committee Institution of Civil Engineers,Association of Consulting Engineers* Institution of Gas Engineers,Association of Mining Electrical and Institution of Heating and Ventilating,Mechanical Engineers* Engineers,Board of Trade Institution of Mechanical Engineers,British Chemical Plant Manufacturers’ Institution of Mechanical Engineers,Association (Automobile Division),British Compressed Air Society Institution of Production Engineers*,British Electrical and Allied Manufacturers’ Locomotive and Allied Manufacturers’,Association* Association of Great Britain,British Gear Manufacturers’ Association* London Transport Board,British Internal Combustion Engine Machine Tool Trades Association*,Manufacturers’ Association Ministry of Defence,British Iron and Steel Federation Ministry of Labour (H.M. Factory Inspectorate),British Mechanical Engineering Federation Ministry of Power,British Pump Manufacturers’ Association Ministry of Public Building and Works,Crown Agents for Oversea Governments and Ministry of Technology — National,Administrations Engineering Laboratory*,Electricity Council, the Central Electricity Ministry of Transport,Generating Board and the Area Boards National Coal Board,in England and Wales National Physical Laboratory (Ministry of,Engineering Equipment Users’ Association Technology),Gas Council Radio Industry Council,Institute of Marine Engineers* Royal Institute of British Architects,British Horological Institute Ministry of Technology,Electronic Engineering Association Navy and Vickers Gearing Research,Institute of British Foundrymen Association,Institution of Engineering Inspection North-East Coast Institution of Engineers,Institution of Engineers and Shipbuilders in and Shipbuilders,Scotland Society of Motor Manufacturers and Traders,Milling Cutter and Reamer Association Ltd.,Ministry of Defence, Army Department University of Sheffield,Ministry of Defence, Navy Department Manufacturers of fine pitch gears,Amendments issued since publication,Amd. No. Date of issue Comments,3305 May 1980 Indicated by a sideline in the margin,BS 978-1:1968,. BSI 10-1999 i,Contents,Page,Co-operating organizations Inside front cover,Foreword iii,1 General,1.1 Scope 1,1.2 Terminology and notation 1,1.3 Preferred range of normal diametral pitches 2,1.4 Basic rack tooth profile 2,2 Design details,2.1 Outside diameter and centre distance 3,2.2 Modification of addendum and centre distance 3,3 Accuracy of gear blanks and gears,3.1 General 13,3.2 Dual flank composite testing 14,3.3 Limits of tolerance on blanks and gear elements 15,4 Limits and tolerances of assembly,4.1 Centre distance 17,4.2 Depth of engagement 18,5 Information to be given on drawings,Appendix A Centre distance and addendum modification 21,Appendix B Examples of calculations 23,Appendix C Comparable diametral pitches and metric modules 29,Appendix D Single flank composite testing: Limits of tolerance 29,Appendix E Calculation of measuring pin dimensions for external and,internal spur gears 29,Figure 1 — Basic rack tooth profile for unit normal diametral pitch 2,Figure 2 — Basic rack tooth profile for unit normal diametral pitch with,backlash allowance 2,Figure 3 — Limiting values of addendum modification coefficient 5,Figure 4 — Minimum permissible addendum modification coefficient for,helical pinions (!n = 20°) 6,Figure 5 — Tolerance zone for profile error 15,Figure 6 — Example of information to be given ……
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