JIS-B-7141-2003-ENG.pdf
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1、J IS JAPANESE I NDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Microscope-Screw thread for object ives ICs 21.060.10; 37.020 Reference number : JIS B 7141 : 2003 (E) PROTECTED BY COPYRIGHT 7s Copyright Japanese Standards Association Provided by IHS under license with J
2、SALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 20:38:57 MDTNo reproduction or networking permitted without license from IHS -,-,- B 7141 : 2003 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of Eco
3、nomy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee, as the result of proposal for revision of Japanese Industrial Standard submitted by the Japan Microscope Manufacturers Association (JMMA)/ the Japanese Standards Association (JSA) with the draft being atta
4、ched, based on the provision of Article 12 Clause 1 of the Industrial Standardization Law applicable to the case of revision by the provision of Article 14. Consequently JIS B 7141 : 1994 is replaced with this Standard. This revision has been made based on IS0 8038-1 : 1997 Optics and optical instru
5、ments-Microscopes-Screw threads for objectives and related nosepieces-Part 1 : Screw thread type RMS (4/5 in x 1 I36 in) and IS0 8038-2 : 200 1 Optics and optical instruments-Screw threads for microscope objectives and related nosepieces-Part 2 : Screw thread type M25 x O. 75 mm for the purposes of
6、making it easier to compare this Standard with International Standards; to prepare Japanese Industrial Standard conforming with International Standards; and to propose a draft of an International Standard which is based on Japanese Industrial Standard. Date of Establishment: 1951-12-27 Date of Revis
7、ion: 2003-03-20 Date of Public Notice in Official Gazette: 2003-03-20 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Testing and Measurement Technology JIS B 7141 : 2003, First English edition published in 2003-10 Translated and published by: Japanese
8、 Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any
9、form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
10、 Bernie Not for Resale, 03/12/2007 20:38:57 MDTNo reproduction or networking permitted without license from IHS -,-,- B 7141 : 2003 Contents Page 1 1 1 1 1 4 7 Introduction . 1 Scope 2 Classification 3 Basic dimensions and tolerances 3.1 RMS type . 3.2 M25 x 0.75 type . Annex 1 (informative) Compari
11、son table between JIS and corresponding International Standards . PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 20:38:57 MDTNo reproduction or networking permitted
12、without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 7141 : 2003 Microscope-Screw thread for objectives Introduction This Japanese Industrial Standard has been made based on IS0 8038-1 Optics and optical instruments-Microscopes-Screw threads for objectives and re- lated nosepieces-Part
13、1 : Screw thread type RMS (415 in x 1 136 in) published in 1997 as the first edition and IS0 8038-2 Optics and optical instruments-Screw threads for microscope objectives and related nosepieces-Part 2 : Screw thread type M25 x 0.75 mm published in 2001 as the first edition with modifying some techni
14、cal con- tents. The portions given sidelines or dotted underlines in this Standard are the modi- fied parts of the contents of the original International Standards. The list of the modified parts are given in Annex 1 together with the explanation. 1 Scope This Standard specifies the threaded part an
15、d screw thread for the ob- jective, revolver, etc. of microscope (hereafter referred to as 36 I 0.706 Roundness of crest and root of thread R (mm) 0.097 External thread I Internal thread I D mm) D 2 (mm) DI mm) 20.320 19.868 19.416 3.1.3 Formula The formula for calculating the basic profile of the R
16、MS type screw thread for objective is as follows: d = D 25.4 p=- n H = 0.960 5P di=d - 2Hi =Di R = 0.137 3P where, n : the number of threads per 25.4 mm; H : height of fundamental triangle; HI : height of basic profile. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS
17、under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 20:38:57 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 B 7141 : 2003 Limit of size Permissible dimensional tolerance 3.1.4 Profile, limits of size and permissible dimen
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