BS-6101-1-1981.pdf
《BS-6101-1-1981.pdf》由会员分享,可在线阅读,更多相关《BS-6101-1-1981.pdf(10页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS 6101-1: 1981 Machine tool ball screws Part 1: Methods of calculating dynamic and static load and life ratings UDC 621.9.022 233.1:621.882.082.6 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:52:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6101-1:1981 This British S
2、tandard, having been prepared under the direction of the Mechanical Engineering Standards Committee, was published under the authority of the Executive Board and comes into effect on 31 July 1981 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference MEE/6
3、Draft for comment 80/75332 DC ISBN 0 580 12153 4 Cooperating organizations The Mechanical Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: The organizations marked with an asterisk in the above list, together w
4、ith the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Associated Offices Technical CommitteeDepartment of Trade (Marine Division) Association of Consulting EngineersDepartment of Transport Association of Hydraulic Equipment E
5、lectricity Supply Industry in England and ManufacturersWales Association of Mining Electrical and Engineering Equipment Users Association Mechanical EngineersFederation of Manufacturers of Construction British Compressed Air SocietyEquipment and Cranes British Electrical and Allied Manufacturers Hea
6、lth and Safety Executive Association (BEAMA)Institution of Gas Engineers British Gas CorporationInstitution of Mechanical Engineers* British Gear Manufacturers AssociationInstitution of Plant Engineers British Internal Combustion Engine Institution of Production Engineers* Manufacturers AssociationL
7、loyds Register of Shipping British Pump Manufacturers AssociationLondon Transport Executive British Steel CorporationMachine Tool Industry Research Association* British Steel IndustryMinistry of Defence* British Valve Manufacturers AssociationNational Coal Board CbmpeOil Companies Materials Associat
8、ion Chartered Institution of Building ServicesProcess Plant Association Crown Agents for Oversea Governments and Railway Industry Association of Great Britain AdministrationsSociety of Motor Manufacturers and Department of the Environment (PSA)*Traders Limited Department of Industry (Mechanical Tele
9、communication Engineering and Engineering)*Manufacturing Association (TEMA) Department of Industry (National Engineering Water-tube Boilermakers Association Laboratory) Ball and Roller Bearing Manufacturers University of Aston in Birmingham AssociationUniversity of Manchester, Institute of Science F
10、ederation of Engineers Tool Manufacturersand Technology Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:52:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6101-1:1981 BSI 10-1999i Contents Page Cooperating organizationsInsi
11、de front cover Forewordii 1Scope1 2References1 3Definitions and notation1 4Thrust ball screw assemblies2 5Rated life3 Figure 1 Section through ball screw drive1 Table 1 Values of constant (K)2 Table 2 Values of constant (K2)2 Publications referred toInside back cover Licensed Copy: sheffieldun sheff
12、ieldun, na, Tue Dec 05 05:52:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6101-1:1981 ii BSI 10-1999 Foreword This British Standard has been prepared under the direction of the Mechanical Engineering Standards Committee. The principles adopted in this standard for dynamic load and life ratings a
13、re based on rolling bearing practice specified in BS 5512 with some modification to suit conditions applicable to ball screw assemblies. The principles adopted for static load ratings are taken from BS 5645 and have also been modified for similar reasons. The definitions used in this standard are ad
14、apted from those given in BS 5512-1 and BS 5645, except for the addition of the conformity factor. 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 d
15、oes not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated.
16、This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:52:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6101-1:1981 BSI 10-19991 1 Scope This Part of this British Standard gives methods of calculating the basic dynamic an
17、d static load and life ratings of re-circulating ball screws for use in machine tool applications. It is applicable to re-circulating ball screw assemblies having the shaft and nuts manufactured from hardened steel. 2 References The titles of the publications referred to in this standard are listed
18、on the inside back cover. 3 Definitions and notation (see Figure 1) For the purposes of this British Standard the following definitions and notation apply. 3.1 Definitions 3.1.1 life for an individual ballscrew assembly, the number of revolutions that the shaft makes in relation to the nut before th
19、e first evidence of fatigue develops in the material of one of them or in the rolling elements 3.1.2 basic rating life (L10) for an individual ballscrew, or group of apparently identical ballscrews operating under the same conditions, the life associated with 90 % probability of achieving the stated
20、 life 3.1.3 basic dynamic axial load rating (Ca) the constant centric axial load that a ballscrew can theoretically endure for a basic rating life of one million revolutions 3.1.4 basic static axial load rating (Coa) the static centric axial load that corresponds to a total permanent deformation of
21、ball and ball track at the most heavily stressed ball/ball track contact of 0.0001 of the ball diameter 3.1.5 conformity factor (fs) the ratio of the ball track radius (rs) divided by the ball diameter (Dw) 3.1.6 pitch circle diameter (Dpw) applicable in the calculation of load ratings the diameter
22、at the centre of the ball 3.1.7 nominal contact angle () the angle between a plane perpendicular to the screw axis and the nominal line of action of the resultant of the forces transmitted by a balltrack to a rolling element 3.2 Notation Figure 1 Section through ball screw drive Cais the basic dynam
23、ic axial load rating in N Coais the basic static axial load rating in N Dwis the ball diameter in mm Dpwis the pitch circle diameter of balls in mm L10is the basic rating life, 106 revolutions Yis the axial load factor Zis the number of load carrying balls contained in one turn of balltrack fcis a f
24、actor which depends on the geometry of the bearing components, the accuracy to which the various components are made, and the material fsis the conformity factor iis the number of rows of balls rsis the ball track radius xrepresents the revised hardness number (see 5.4) is the nominal contact angle
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS 6101 1981
链接地址:https://www.31doc.com/p-3772459.html