1、BSI BS*:465b PART*L4 83 m Lh24669 00bL364 4 m BS4656:Part14: 1983 IS0 6779-1981 UDC 621.9.01-187.001.4:621.919.3 O British Standards institution. No part of this publication may be photocopied or otherwise reproduced without the prior permission in writing of BSI. British Standard Accuracy of machin
2、e tools and methods of test Part 14. Specification for broaching machines, vertical internal type IS0 title : Acceptance conditions for broaching machines of vertical internal type - Testing of accuracy Prcision des machines-outils et mthodes dessai Partie 14. Machines verticales brocher les intrieu
3、rs - Spcifications Genauigkeit von Werkzeugmaschinen und Prfverfahren Teil 14. Senkrechtinnenraummaschinen British Standards Institution BSI BS*465b PARTr14 83 m lb24664 0061365 6 m BS 4656 : Part 14 : 1983 Con tents National foreword Committees responsible Page Inside front cover Back cover Specif
4、cat ion 1, Scope and field of application 2. Reference 3. Preliminary remarks 4, Terminology 5, Acceptance conditions and permissible deviations 3 Annex 7 National foreword This British Standard has been prepared under the direction of the Mechanical Engineering Standards Committee and implements ag
5、reements of the International Organization for Standardization (ISO). It is identical with IS0 6779-1 981 Acceptance conditions for broaching machines of vertical internal type - Testing of accuracy. This British Standard supersedes BS 4656 : Part 14 : 1973, which is withdrawn. Inch dimensions, In a
6、ccordance with the UK policy of metrication, inch dimensions given in this standard are not valid and are included for information purposes only. Abbreviations. For the purposes of this standard, various methods of expressing permissible deviations are employed, each having a particular type of appl
7、ication. The methods employed are as follows. .I.-. This type of expression applies to deviations of perpendicularity that are ratios. - - - for any This type of expression applies to deviations length of - - - of straightness and parallelism, and is used in fact for local permissible deviations, th
8、e measurement length being obligatory. This type of expression applies to deviations of straightness and parallelism and is used to recommend a measurement length, but in this case the proportionality rule comes into operation if the measurement length differs from that indicated. - -. per - - - Dia
9、grams. For reasons of simplicity the diagrams in this standard illustrate only one type of machine. Terminology and conventions. 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
10、not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a 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 appear, re
11、ferring to this standard, they should be read as British Standard. Cross-reference International standard Corresponding British Standard ISO/R 230-1961 BS 3800 : 1964 Methods for testing the accuracy of machine tools (Technically equivalent) Compliance with a British Standard does not of itself conf
12、er immunity from legal obligations. v- BSI BS*K465b PART*:/q 83 = 162qbb 00bL3bb 8 BS 4656 : Part 14 : 1983 British Standard Accuracy of machine tools and methods of test Part 14. Specification for broaching machines, vertical internal type 1 This International Standard specifies, with reference to
13、ISO/R 230, both preliminary levelling operations and geometri- cal tests on general purpose and normal accuracy machines, and gives the corresponding permissible deviations which apply. This International Standard also gives the terminology used for the main elements of the machine. 1) Scope and fie
14、ld of application It deals only with the verification of accuracy of the machine. It does not apply to the testing of the running of the machine (vibrations, abnormal noises, stick-slip motion of components, etc.), or to its characteristics (speeds, feeds, etc.) which should generally be checked bef
15、ore testing accuracy. 2 Reference ISO/R 230, Machine tool test code. 3 Preliminary remarks before acceptance, warming up of moving parts, description of measuring methods, and recommended accuracy of testing equipment. 3.3 The sequence in which the geometrical tests are given is related to the sub-a
16、ssemblies of the machine and this in no way defines the practical order of testing. In order to make the mounting of instruments or gauging easier, tests may be ap- plied in any order. 3.4 When inspecting a machine, it is not always necessary to carry out all the tests given in this International St
17、andard. It is up to the user to choose, in agreement with the manufacturer, those tests relating to the properties which are of interest to him, but these tests are to be clearly stated when ordering a machine. 3.5 Because of the diversity of shape of the pieces, the prac- tical tests have not been
18、given. If the user wishes to carry out a practical test, this one has to be stated in agreement with the manufacturer. 3.1 In this International Standard, all the dimensions and per- missible deviations are expressed in millimetres and in inches. 3.2 To apply this International Standard, reference s
19、hould be made to ISO/R 230, especially for installation of the machine 3.6 When establishing the tolerance for a measuring range different from that given in this Standard (see clause 2.311 in ISO/R 2301, it should be taken into considera- tion that the minimum value of tolerance, for geometrical te
20、sts as well as for practical tests, is 0,Ol mm (0,ooO 4 in). 1) In additionto terms used in the three official IS0 languages (English, French and Russian), this International Standard gives the equivalent terms in German; these have been included at the request of IS0 Technical Committee TC 39 and a
21、re published under the responsibility of the Member Body for Germany, F.R. However, only the terms and definitions given in the official languages can be considered as IS0 terms and definitions. 1 BSI BS*VbSb PART*ltY 83 16,24669 00613b7 T BS 4656 : Part 14 : 1983 45 E : Details 4 and 5 represented
22、at a larger scale F : Dtails 4 et 5 reprsents agrandis R : YeenbIreHHoe 306paxewe 4eTanen 4 M 5 D: Einzelheit 4 und 5 vergrjert dargestellt 4 Terminology HX cana30 Retriever slide guide 2 BSI BS*4656 PART*L4 83 W L624bb ClObi1368 Ir W ss4 . b) transverse verification. Checking of flatness of the wor
23、k table. Checking of squareness of the retriever chuck movement to the work table : a) longitudinal verification; b) transverse verification. 3 BSI BSU4bSb PARTUIL1 83 Ih2Ybb bI3h 3 = Permissible deviation a) and b) 0,0511000 in a) and b) 0.002/40 ,o4 up to loo0 a) and b) 0,05/300 0.0016 up to 40 a)
24、 and 6) 0.002112 Measuring instruments Level Level or straightedge and gauge blocks Dial gauge Square Observations ind references to the test code ISOIR 230 Clause 3.11 The level shall be placed on the work table in the longitudinal and transverse direc- tions and the deviation observed. This test s
25、hall be carried out in accordance with the manufacturers instructions. Clauses 5.322 and 5.323 The level shall be placed on the work table successively in the longitudinal and transverse directions a) and b) and the deviation observed. Clause 5.522.2 The dial gauge shall be fixed on the retriever ch
26、uck hole. The square shall be placed against the work table. The retriever chuck shall be moved downwards, and the deviation shall be observed in positions a) and b). This test is not applicable to machines with a floating retriever chuck. BS 4656 : Part 14 : 1983 I NO. - G3 - G4 - G5 - Diagram a) O
27、bject Checking of squareness of the pull chuck rnwernent to the work table : a) longitudinal verification; 6) transverse verification. Checking of coincidence of the pull chuck hole axis with the central hole axis of the work table. Checking of the alignment of the pull chuck hole and the retriever
28、chuck hole axes : a) longitudinal verification; 6) transverse verification. 5 BSI BS*4b5b PARTmL4 83 9 Zb24bb ClOb1371 L W Permissible deviation mm a) and b) 0,03/3 0,05 a) and b) Oto6 easuring length of - in a) and b) 0.0012/12 0.002 a) and 6) 0.0024 for a measuring length of 20. Measuring instrume
29、nts Dial gauge Square Dial gauge Tesf mandrel Dial gauge Test mandrel The length of the mandrel = 1000mm - Observations and references to the test code ISO/R 2 Clause 5.522.2 The dial gauge shall be fixed on the pull chuck hole. The square shall be placed against the work table. The pull chuck shall
30、 be moved downwards, and the deviation shall be observed in positions a) and 6). Clause 5.44 The dial gauge shall be set swivelling on the test mandrel, and the test mandrel shall be fixed on the pull chuck, The dial gauge shall be rotated through Wo around the central hole and any deviation observe
31、d. The variation in the readings represents twice the error of co- incidence. Clause 5.44 The test mandrel shall be fixed in the pull chuck hole and in the retriever chuck hole. The stylus of the dial gauge shall touch the test mandrel. The test mandrel shall be moved downwards, and the deviation sh
32、all be observed in positions al and bl. NOTE - For machines whose retriever chuck does not follow through the spindle during broaching, it is impossible to carry out the check over the 500 mm stroke required in the test. This test is not applicable to machines with a floating retriever chuck. 3m BS4
33、656 : Part 14 : 1983 7 BSI BS*4656 PART*L4 3 1624bb 0063373 5 W Publication referred to see national foreword. For information about BSI services relating to third party certification to suitable British Standard product specifications, schemes . for the registration of firms of assessed capability,
34、 testing and inspection facilities, please contact the Director, Quality Assurance Division, BSI, Mavlands Avenue, Hemel HemDstead, Herts HP2 4SQ Tel. Hemel Hempstead 31 1 1. BSI BS*465b PART*L4 83 W lb24bb bL379 7 BS4656:Par-t 14: 1983 IS0 6779-1981 This British Standard, having been prepared under
35、 the direction of the Mechanical Engineering Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 November 1983. O British Standards Institution, 1983 First published September 1973 . First revision 30 November 1983. ISBN O 580 13516 O British Standa
36、rds Institution Incorporated by Royal Charter, BSI is the independent national body for the preparation of British Standards. It is the UK member of the International Organization for Standardization and UK sponsor of the British National Committee of the International Electrotechnical Commission. C
37、opyright Users of British Standards are reminded that copyright subsists in a11 BSI publications, No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of implementing the standard, of necessary de
38、tails such as symbols and size, type or grade designations. Enquiries by post should be addressed to the Publications Manager, British Standards Institution, Linford Wood, Milton Keynes MK14 6LE. The number for telephone enquiries is 01-837 8801 and for telex 23218. Contract requirements A British S
39、tandard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Revision of British Standards British Standards are revised, when necessary, by the issue either of amendments or of revised editions. It is impor
40、tant that users of British Standards should ascertain that they are in possession of the latest amendments or editions. Information on all BSI publications is in the BS Yearbook, supplemented each month by BSI News which is available to subscribing members of the Institution and gives details of new
41、 publications, revisions, amendments and withdrawn standards. Any person who, when making use of a British Standard, encounters an inaccuracy or ambiguity, is requested to notify BSI without delay in order that the matter may be investigated and appropriate action taken. The following BSI references
42、 relate to the work on this standard: Committee reference MEE/6 Draft for comment 79/79572 DC Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Mechanical Engineering Standards Committee (MEE/ - ) to Technical Committee MEE/6 upon which th
43、e following bodies were represented: Ball and Roller Bearing Manufacturers Association Control and Automation Manufacturers Association (BEAMA) Department of I ndustry (Mechanical Engineering) Federation of British Engineers Tool Manufacturers Health and Safety Executive Institution of Production En
44、gineers Machine Tool Industry Research Association Ministry of Defence University of Aston in Birmingham University of Manchester (Institute of Science and Technology) A mend ment s issued si nce pub I i cat ion Amd. No. Date of issue Text affected British Standards Institution . 2 Park Street London W1A 2BS . Telephone 01-629 9000 . Telex 266933 831 1 -6-1 .Sk-JWD F ME E16
