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1、. . . UDC 621.753.1 :621.965:621.98 O JIS JAPANESE INDUSTRIAL STANDARD General tolerances for parts formed by shear from metal plates Translated and Published by Japanese Standards Association Printed in Japan 4 s I Copyright Japanese Standards Association Provided by IHS under license with JSALicen
2、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,- In the event of any doubt arising, the original Standard in Japanese is to be final authority. Copyright Japanese Standards Association Provid
3、ed by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S BU0410 91 4933608 O083364 4 1 UDC 621.753.1:621.965:621.98 JAPANESE INDUSTRIAL STANDARD J I S Gener
4、al tolerances for parts formed by B 0410-1991 shear from metal plates 1, Scope on cut width and general tolerances on straightness and rectangularity of metal plates of 12 mm or under in thickness which have been cut by plate shearing machines such as the gap shear and square shear. This Japanese In
5、dustrial Standard specifies the general dimensional tolerances Remarks: The applicable Standards to this Standard are given in the following: JIS B O111 Glossary of Terms for the Presswork Machinery JIS B 0621 JIS Z 8114 Definitions and Designations of Geometrical Deviations Glossary of Technical Dr
6、awing Terms 2, Definitions (4) For the purposes of this Standard definitions in JIS B 0111, JIS B 0621 and 8114 apply, and others are in accordance with the following: cut width cutting edge of a shear and its opposite side ( b of Fig. i). The distance between the side which has been cut by the cut
7、length mr (t of Fig. i). The length of the side which has been cut by the cutting edge Fig. 1 been cut Side which has been cut straightness The magnitude of deviation from the geometrically correct straight line at the portion of the side which has been cut being touched with the cutting edge (f of
8、Fig. 2). rectangularity magnitude of deviation of the portion of the short side which has been touched with the cutting edge from a vertical geometrical plane in respect to the datum shape body (f of Fig, 3). Taking the long side as the datum shape body, the In the case where the two sides are equal
9、 in length, any one side may also be taken as the datum shape body. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from
10、IHS -,-,- J I S B*04LO 91 4933606 0083365 6 S j 2 B 0410-1991 Fig, 2 Product . . . . ,Product Product Fig. 3 portion which has been touched with cutting edge Datum shape body 3. General Dimensional Tolerances on Cut Width The general dimensional tolerances on cut width shall be classified into two g
11、rades of grade A and grade B according to plate width divisions, respectively, and respective dimensional tolerances shall be in accordance with Table 1. Table 1. General Dimensional Tolerances on Cut Widths Unit: mm I .Divisions of plate thickness (t) tS1.6 1.6t3 3t56 6 t512 Division of basic dimen
12、sion 30 max. Over 30 up to and incl. 120 Over 120 up to and incl. 400 Over 400 up to and incl. 1000 Over 1000 up to and incl. 2000 Over 2000 up to and incl. 4000 I ; c i . ; 1 k0.3 k0.8 k0.8 I -11.5 -11.2 I k 2 Grades Grade A Grade B Grade A Grade B Grade A Grade B - I- l- I- l- I- k1.5 +2 k2.5 k1.5
13、 c Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,- JIS B*04LO 91 111 4933608 0883366 8 W - - 3 B 0410-1991
14、 4 . General Tolerances on Straightness 0 The general tolerances on straightness shall be classified into the two grades of grade A and grade B, and the respective tolerances shall be in accordance with Table 2. Table 2. General Tolerances on Straightness Unit: mm 30 max. Division of nominal size of
15、 cut length Over 30 up to and incl. 120 Over 120 up to and incl. 400 Over 400 up to and incl. 1000 Over 1000 up to and incl. 2000 Over 2000 up to and incl. 4000 Division of plate thickness (t) t91.6 I 1.6tS3 1 . 3tS6 I 6t512 Grades 5. General Tolerances on Rectangularity The general tolerances on re
16、ctangularity shall be classified into the two grades of grade A and grade B, and the respective tolerances shall be in accordance with Table 3. Table 3. General Tolerances on Rectangularity Unit: mm I Divisions of plate thickness (t) Division of nominal length of short side Copyright Japanese Standa
17、rds Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,- J I S B*041iO 91 O 4933b08 0083367 T O I 4, B 0410-1991 6. Designations on Drawings
18、 On the drawings or associated documents, the number of Standard of this Standard and grade shall be designated. Example: JIS B 0410-B IT Number of Standard of this S t a n d a r d 2 Grade B of grade in accordance with JIS B 0410 Furthermore, in the case where the general dimensional tolerances on c
19、ut width and the general tolerances on straightness or rectangularity are designated by different grades, it shall be clearly stated to that effect. Example: General dimensional tolerances on cut width JIS B 0410-A General tolerances on straightness and rectangularity JIS B 0410-B a b Copyright Japa
20、nese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,- B 0410-1991 Edition 1 Japanese Text Established by Minister of Internati
21、onal Trade and Industry Date of Establishment: 1963-02-01 Date of Revision: 1991-02-01 Date of Public Notice in Official Gazette: 1991-02-26 Investigated by: Japanese Industrial Standards Committee Divisional Council on Machine Elements This English translation is published by: Japanese Standards As
22、sociation 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1991 Printed i n Tokyo by Hohbunsha Co., Ltd. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/10/2007 19:16:00 MSTNo reproduction or networking permitted without license from IHS -,-,-