BS-6861-1-1987 ISO-1940-1-1986.pdf
《BS-6861-1-1987 ISO-1940-1-1986.pdf》由会员分享,可在线阅读,更多相关《BS-6861-1-1987 ISO-1940-1-1986.pdf(24页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS 6861-1: 1987 ISO 1940/1-1986 Reprinted, incorporating Amendment No. 1 Balance quality requirements of rigid rotors Part 1: Method for determination of permissible residual unbalance ISO title: Mechanical vibration Balance quality requirements of rigid rotors Part 1: Determination
2、 of permissible residual unbalance UDC 62253:62755 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:25:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6861-1:1987 This British Standard, having been prepared under the direction of the General Mechanical Engineering Standards Committee, was
3、published under the authority of the Board of BSI and comes into effect on 30 June 1987 BSI 12-1998 The following BSI references relate to the work on this standard Committee reference GME/21 Draft (ref. 86/77850) announced in BSI News February 1987 ISBN 0 580 15982 5 Committees responsible for this
4、 British Standard The preparation of this British Standard was entrusted by the General Mechanical Engineering Standards Committee (GME/-) to Technical Committee GME/21 upon which the following bodies were represented: British Engine Group of SMMT British Maritime Technology British Steel Corporatio
5、n Department of Trade and Industry (National Engineering Laboratory) Electricity Supply Industry in England and Wales Institute of Sound and Vibration Research Institution of Electronic and Radio Engineers Institution of Mechanical Engineers Lloyds Register of Shipping Ministry of Defence Motor Indu
6、stry Research Association Power Generation Association (BEAMA Ltd.) Society of British Aerospace Companies Limited Society of Environmental Engineers United Kingdom Atomic Energy Authority The following bodies were also represented in the drafting of the standard, through subcommittees and panels: E
7、ngineering Equipment and Materials Users Association Coopted member Amendments issued since publication Amd. No.Date of issueComments 6365June 1991Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:25:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6861-
8、1:1987 BSI 12-1998i Contents Page Committees responsibleInside front cover National forewordii 0Introduction1 1Scope and field of application1 2References1 3Pertinent aspects of the balancing problem1 4Permissible unbalance related to rotor mass2 5Quality grades relating service speed and permissibl
9、e residual specific unbalance4 6Determination of balance quality requirements4 7Allocation of permissible residual unbalance to each correction plane on the basis of Uper5 8Determination of the residual unbalances11 9Sources of errors in balancing12 Annex Example for the general method described in
10、7.3.3.1for two-plane balancing15 Figure 1 Different representations of the same state of unbalance of a rigid rotor3 Figure 2 Maximum permissible residual specific unbalance value corresponding to various balance quality grades7 Figure 3 Rotor dimensions to be used for simplified method8 Figure 4 Ro
11、tor with overhung discs at both ends9 Figure 5 Rotors with couple correction planes I and II at a distance b less than one-third of the bearing span l10 Figure 6 Rotor dimensions to be used for general method calculations10 Figure 7 Determination of the response of the permissible residual unbalance
12、 to a trial mass12 Figure 8 Test procedure for determining the residual unbalance in one plane13 Figure 9 Error sources in end-drive elements14 Figure 10 Rotor dimensions15 Table 1 Balance quality grades for various groups of representative rigid rotors6 Table 2 Typical examples of recommended devia
13、tions12 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:25:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6861-1:1987 ii BSI 12-1998 National foreword This Part of BS 6861 has been prepared under the direction of the General Mechanical Engineerin
14、g Standards Committee. It is identical with ISO 1940/1-1986 “Mechanical vibration Balance quality requirements of rigid motors Part 1: Determination of permissible residual unbalance” which was prepared by Technical Committee ISO/TC 108 of the International Organization for Standardization (ISO) and
15、 in the development of which the United Kingdom played an active part. A further Part of this British Standard, concerned with errors associated with the determination of residual unbalance, is to be published in due course. BS 6861-1 supersedes BS 5265-1, which has been withdrawn. Terminology and c
16、onventions. The text of the international standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has bee
17、n used as the decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “International Standard” or “part of ISO 1940” appear, referring to this standard, they should be read as “British Standard” or “Part of BS 6861” re
18、spectively. The Technical Committee has reviewed the provisions of ISO 2371 and ISO 2953, to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A related British Standard to ISO 2371-1974 is BS 4924:1973 “Specification. Descriptio
19、n and evaluation of field balancing equipment”. A related British Standard to ISO 2953-1985 is BS 3852 “Balancing machines” Part 1:1979 “Method of description and evaluation”. Textual errors. When adopting the text of the international standard, the textual errors listed below were discovered. They
20、have been marked in the text and have been reported to ISO in a proposal to amend the text of the international standard. a) In 3.1, paragraph 2, line 2, 3.15 gmm should read 3.16 gmm. b) In Figure 1(a) the value 3.15 should read 3.16. c) In 7.3.3.1, line 12, h should be read b. Cross-references Int
21、ernational standardCorresponding British Standard ISO 1925-1981BS 3851:1982 Glossary of terms used in the mechanical balancing of rotating machinery (Identical) BS 5265 Mechanical balancing of rotating bodies ISO 5343-1983Part 3:1984 Recommendations for criteria for evaluating flexible rotor balance
22、 (Identical) ISO 5406-1980Part 2:1981 Methods for the mechanical balancing of flexible rotors (Identical) Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:25:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6861-1:1987 BSI 12-1998iii A British Standard does not purport to include all the ne
23、cessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, page
24、s 1 to 16, 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 indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 05:25:49 GMT+00:00 2006, Unc
- 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-6861-1-1987 ISO-1940-1-1986 BS 6861 1987 ISO 1940 1986
链接地址:https://www.31doc.com/p-3772845.html