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1、J I S B*3402 89 4933608 0012bb8 T -; F - - JIS JAPANESE INDUSTRIAL STANDARD Technical Drawing - Drawing by CAD Translated and Published by Japanese Standards Association UDC 744.4:681.3.06 Printed in Japan 7s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS
2、 Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- I J I S BX3402 89 4933608 0012bb I In the event of any doubt arising, the original Standard in Japanese is to be final authority. Copyright Japanese
3、Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*3402 89 4933608 0032670 B I UDC 744.4: 681.3.06 JAPANESE INDUSTRIAL STA
4、NDARD J I S Technical Drawing - Drawing by CAD B 3402-1989 1. Scope This Japanese Industrial Standard specifies the technical drawing carried out by using CAD mainly in mechanical industry, in accordance with JIS Z 8310 and respective Japanese Industrial Standards which specify technical drawing oth
5、erwise. Further, relating to the items not specified in this Standard shall be 2. Definitions For the purpose of this Standard main definitions are in accordance with JIS Z 8114. 3. Lines to Be Used for Technical Drawing-Drawing by CAD 3.1 Classification of Lines 3.1.1 Classification by Intermittent
6、 Style Lines shall be classified into following four classes according to the intermittent style (Fig. 1). (1) Continuous line: The line which continues (2) Dashed line: The reference of ratio of length of line to interval shall be 2:l. (3) Chain line: The reference of ratio of length of long line t
7、o interval and to length of short line shall be 9: 1: 1. (4) Chain double-dashed line: The reference of ratio of length of long line to interval to length of short line to interval t short line shall be 15: 1: 1: 1: 1. The chain line and chain double-dashed line shall be drawn so that these start at
8、 the element of longer line and ended also. A- Further, when the dashed line, chain line and chain double-dashed line intersect mutually with other line, it should preferably indicate the intersecting point by the elements of longer line (Fig. 2). Applicable Standards and Reference Standard: See pag
9、e 9, o Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 B 3402-1989 J I S Ba3402 89 4933b08 OOL267L T = F
10、ig. 1. Classes of Lines Continuous Line Dashed Line Chain Line Chain Double-Dashed Line Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted w
11、ithout license from IHS -,-,- c J I S B*3402 89 4933688 00L2672 L 3 B 3402-1989 Fig. 2. Intersection of Intermittent Lines Dashed Line (a) In the Case of Intersecting (b) In the Case of Intersecting at Corner Good example Bad example Good example Bad example r- I I I 1 I I I I I - r- I -+- I I I 1 1
12、 1 Chain Double-Dashed Line (a) In the Case of Intersecting (b) In the Case of Intersecting at Corner Good example Bad example Good example Bad example 3.1.2 Classification by Ratio of Thickness The classification by ratio of thicknesses of lines shail be as follows: (1) According to the thickness r
13、atio of lines, lines shall be classified into three classes as shown in Table 1. Table 1. Ratio of Thickness of Lines Classification of line I Thickness ratio Thin line Thick line Thicker line 1 2.5 5 (2) In the same drawing, lines shall be arranged in same thickness for each class. The minimum thic
14、kness of line shail be 0.18 mm. (3) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*3402 89 H 4933
15、608 00L2bi3 3 0 Classification of line 4 B 3402-1989 Use of line 3.1.3 Classification of Lines by Colour In the case where understanding of content of drawing is to be made easy and misunderstanding of content is not given, colour line other than black may be used. lines having main meaning such as
16、visible outlines, black lines shall be used. However, as to the Line of shape of digit 8 Further, for expression and the like for auxiliary part, it is desirable to use effective colour lines. Line of limit of partial or interrupted view and section when a cylindrical shape matter is broken perpendi
17、cularly to axis. 3.2 Using Method of Lines The using method of lines shali be in accordance with 5. (except line of limit of partial or interrupted view and section) of JIS Z 8312, and in addition, the line of limit of partial or interrupted view and section shall be drawn in three class shown in Ta
18、ble 2 according to the thin continuous lines (Fig. 3). Table 2. Classification of Lines of Limit of Partial or Interrupted View and Section Line of waveform Zigzag line Line of limit of partial or interrupted view and section of the part removed of a part for explanation of internal part. Line of li
19、mit of partial or interrupted view and section to be used in the case where the fact that a part is omitted on the drawing is clear. Fig. 3. Classes of Lines of Limit of Partial or Interrupted View and Section (Line of waveform) (Zigzag line) / Copyright Japanese Standards Association Provided by IH
20、S under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*3402 89 4933608 80L2b74 5 I Fig. 3 (Continued) (Line of shape of digit 8) 5 B 3402-1989 4. Letters to Be
21、Used for Drawing: bv CAD Letters to be used for drawing by CAD shall be in accordance with JIS Z 8313 (except the following specifications) and for others, with the following: (1) Styles of digits and English letters shall be, as a rule, B type oblique style. However, except where specially required
22、. (2) Take for decimal point of numerical value the space for one letter and write at the middle lower part. (3) The ratio of sizes of letters to be used in a series of description in drawing should preferably be as follows: KANJI: KANA and digits and English letter = 1:0.83 5. Projection Method to
23、Be Used for Drawing by CAD The projection method to be used for drawing by CAD shall be in accordance with JIS Z 8315 (except the following specifications) and for - others, with the following: (1) The projection method to be used for drawing by CAD, unless special reason does not exist, shall be in
24、 accordance with the parallel pro- jection, and, among it, be of four classes of orthographic projection, perspective projection, oblique projeciton and trimetric projection. For view for explanation or the like to draw so as to be easily under- standable to the object by a view, it shall be the pro
25、jection view from the angle where the effect becomes highest and the trimetric pro- jection view, be used. In this case, the scale for each part should, preferably, be of correct right projection of object. (2) 6. Expression of Shape in Drawing by CAD The expression of shape in drawing by CAD shall
26、be in accordance with JIS Z 8316 (except the following specifications) and for others, with the following. The line of limit of partial or interrupted view and section of cut end part of cylindrical shape matters (round bar and the like) shall be as shown in Fig. 4. Copyright Japanese Standards Asso
27、ciation Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*3402 89 H 4933b08 0032675 7 E 6 B 3402-1989 In the case where shrinkage of view acc
28、ording to omission of intermediate part, as to the shaft, round bar, circular pipe, etc. , the line of limit of style of digit of 8 shall be used so as it can be understood easily. The circular arc to constitute the line of limit of it shall be of radius of 3/4 objective radius. The part correspondi
29、ng to sectional view shall be applied with hatching or the like. Fig. 4. Line of Limit of Partial or Interrupted View and Section of Circular Cylindrical Matter 7. Dimensioning in Drawing by CAD The dimensioning in drawing by CAD shall be in accordance with JIS Z 8317 (except the following specifica
30、tions) and for others, with the following: Dimension Line The top opening angle of arrow mark of dimension line shali be 30 degrees as the reference, and the end may be either opened or closed and painted out (Fig. 5). Dimensions For entering dimensions, the method to interrupt the dimension line (m
31、ethod 2 of JIS Z 8317) shall not be used (Fig. 6). Expression of Curve not Composed of Circular Arc The dimension of curve not composed of circular arc shall be expressed by coordinate dimension at an arbitrary point on a curve generally, but in the case where the curved surface is specified by data
32、 in CAD, the effect shall be indicated on the drawing and the range should preferably be made clear by dimension. Dimensioning in Axonometric Projection View mension line, dimension, etc. are entered in perspective projection view, trimetric projection view, etc. , the projection line, dimension lin
33、e, etc. are drawn by those which are drawn in orthographic projection view, for object as those are projected as they are, but letters for dimension and the like or graphic symbols or the like are entered along the dimension line or the like according to the specifications in orthographic projection
34、 view, as appropriate, without distortion at directly above its middle part (Fig. 7). In the case where di- Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or ne
35、tworking permitted without license from IHS -,-,- e . c 3 4 m I J I S BM3402 89 4933608 0012676 9 7 B 3402-1989 Fig. 5. Dimension Line 1 I Good Example Bad Example Fig. 7. Dimensioning in Axonometric Projection View Copyright Japanese Standards Association Provided by IHS under license with JSALicen
36、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- 8 B 3402-1989 8. Graphic Symbols in Drawing by CAD In drawing by CAD, the graphic symbols (icon) shown in Fig. 8 may be used. Fig. 8. Graphic
37、Symbols Turning U (c Drilling (Perforating) Boring 1 7 i Reaming Milling Tapping Planing Grinding 4 : , : . . . . Shaping Shear cut 9. Material-Quality Marking Pattern in Drawing by CAD In drawing by CAD, the quality of material constituting the parts may be expressed in hatching part indicating the
38、 section by the material-quality marking patterns shown in the following (Fig. 9). (1) In the case of metallic system materials, thin lines shall be applied at equal intervals in 45 degrees relative to the centre line to be main of the part or to the visible outline to be main of the sectional view.
39、 (2) In the case of polymer system materials, thin lines shall be applied at equal intervals similarly at O degree, 90 degrees or to net apertures by those. (3) In the case of ceramic system materials, continuous patterns drawn by thin lines shall be applied. o Copyright Japanese Standards Associati
40、on Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- - JIS B*3402 89 4933608 0012678 2 H Example of metaliic system 9, B 3402-1989 Example of polymer
41、 system Fig. 9. Material-Quality Marking Pattern Example of ceramic system 10. Application of Common-Use Drawing Method to Drawing by CAD In the case where the method of hand-writing drawing has become the d better understanding measures (for example in the view of large type structure the graphic i
42、ndication of flange thickness of angle steel, or the like) it is desirable to express by the similar graphic method also in drawing by CAD. In this case, it is desirable to indicate this effect the fact that a certain part is nut scale view (the view where the dimension is not proportional to the nu
43、merical value), and the like. Applicable Standards: JIS Z 8114-Glossary of Drawing Terms JIS Z 8310-Technical Drawing- General Code of Drawing Practice JIS Z 8312-Technical Drawing-Line Conventions JIS Z 8313-Technical Drawing-Lettering JIS Z 8315-Technical Drawing-Projection Methods JIS Z 8316-Tech
44、nical Drawing-Presentation of Views and Sections JIS Z 8317-Technical Drawing-Dimensioning Reference Standard: IS0 7000 Graphical symbols for use on equipment-Index and synopsis Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Win
45、g, Bernie Not for Resale, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,- B 3402-1989 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishement: 1989- 03-01 Date of Public Notice in Official Gazette: Inves
46、tigated by: 1989-03-03 Japanese Industrial Standards Committee Divisional Council on FA This English translation is published by: Japanese Standards Association 1- 24, Akasaka 4, Minato-ku , Tokyo 1 O 7 Japan O JSA, 1989 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, 03/12/2007 09:14:56 MDTNo reproduction or networking permitted without license from IHS -,-,-