JIS-B-0614-1987-ENG.pdf
《JIS-B-0614-1987-ENG.pdf》由会员分享,可在线阅读,更多相关《JIS-B-0614-1987-ENG.pdf(14页珍藏版)》请在三一文库上搜索。
1、J I S Ba0614 87 4933608 0008430 I I .JI$ 0 I UDC 62-434 : 621.753.1 / Y JAPANESE INDUSTRIAL STANDARD System of Cone Tolerances JIS B 0 6 1 4 - 1 9 8 7 Translated and Published bY Japanese Standards Association Printed in Japan 8s Copyright Japanese Standards Association Provided by IHS under license
2、 with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:05:38 MDTNo reproduction or networking permitted without license from IHS -,-,- _ J I S B*Ob34 87 m 4933b08 0008433 3 m In the event of any doubt arising, the original Standard in Japanese is to be final auth
3、ority. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:05:38 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*ObL4 87 4933b08 0008432 5 UDC 62-434:621.75
4、3.1 JAPANESE INDUSTRIAL STANDARD J I S System of Cone Tolerances B 0614-1987 1 . Scope applicable to rigid conical workpieces of 1/3 to 1/500 in taper ratio and over 6 mm up to 630 mm in cone length. applicable to the cone tolerances for rolling bearings. This Japanese Industrial Standard specifies
5、the cone tolerances system This Standard, however, is not Furthermore, the taper angle tolerances specified in this Standard are also applicable to the prism workpieces. Remark: This Standard is in accordance with the conical tolerances system specified in IS0 1947-1973 (System of cone tolerances fo
6、r conical workpieces from c = l : 3 to 1 : 500 and lengths from 6 to 630 mm). 2. Definitions For the purposes of this Standard, the definitions in JIS B 0154 and JIS B 0021 apply. 3. Quantitative Symbols For the purposes of this Standard, the following quantitative symbols apply AT: Taper angle tole
7、rances Remark: The symbol AT is also used for expressing the grade of taper angle tolerance. In that case, a digit expressing the grade shall be suffixed to the symbol AT. ATD: AT,: Taper angle tolerance expressed in unit of length. Taper angle tolerance expressed in unit of angle. c : Basic taper r
8、atio D : Basic largest diameter Dm, : Dmin : Maximum permissible largest diameter Minimum permissible largest diameter d: Basic smallest diameter Applicable Standards, Corresponding International Standard and Reference Standards: See page 11. Copyright Japanese Standards Association Provided by IHS
9、under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:05:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ._ J I S B*ObL4 87 4933608 0008433 7 W 2 B 0614-1987 Maximum permissible smallest diameter Minimum permissible smal
10、lest diameter Basic cone diameter at specified axial position Actual cone diameter at specified axial position Maximum permissible cone diameter at specified axial direction Minimum permissible cone diameter at specified axial direction Basic cone length Cone diameter tolerance Cone section diameter
11、 tolerance Conical shape tolerance Basic taper angle Maximum permissible taper angle Minimum permissible taper angle Maximum taper resulting from cone section diameter tolerance TD 4. Cone Tolerance System 4.1 Basis of Cone Tolerance System The cone tolerance system shall be based on the cone diamet
12、er tolerance, taper angle tolerance, cone form tolerance and cone section diameter tolerance. 4.2 Cone Diameter Tolerance The cone diameter tolerance T D is applicable to all the actual cone diameters within the cone length L , and is generally selected from the standard tolerances based on J I S B
13、0401 according to the largest diameter D of the cone. Remark: The cone diameter tolerance T takes a fixed value for all sections normal to axis. 4.3 Taper Angle Tolerances The taper angle tolerances shall be in ac- cordance with the following: (1) Grades of Taper Angle Tolerance shall be classified
14、into 12 grades of AT 1 to AT 12 corresponding The taper angle tolerance AT to the steps of cone lengtgs (see Attached Table). grades AT O, AT O1 or AT 13 may be used, as required. Values of Taper Angle Tolerance The values of the taper angle tolerances AT, and ATn for respective grades corresponding
15、 to the steps of cone length L shall be in accordance with Attached Table. However, - (2) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 03:05:38 MDTNo reproduction or networking permitted
16、 without license from IHS -,-,- J I S Ba0614 87 4933608 0008434 9 3 B 0614-1987 ATn shall be the value in pm unit calculated from the constant AT, within the steps of one cone length, and it shall be applied to the difference A(D-d) between the diametral difference of both ends normal to a cone and
17、the basic value D-d. Remarks 1. The value of AT, (p rad unit) for the grade ATn shall be the preferred number R 10 nearest to the value calculated from the following formula: where Le: geometrical mean of two cone length values dividing the steps of cone length L (in accordance with preferred number
18、 R 5.) (mm) n: digit expressing grade 2 . There shall be the following relation between ATD (pm unit) and AT, (mrad unit) ( L in mm unit). ATD= AT, X L The values of ATn corresponding to cone lengths Li and LZ dividing the step of a cone length shall vary as given in Fig. 1. Variation of ATD within
19、Steps ( LI to Lz.) of a Cone Length Fig. 1. L2 Furthermore, the values of grade AT O and grade AT O 1 shall be 1/10 of the values of AT 5 and AT 4, respectively. Also, the values of respective grades AT 13 to AT 17 shail be 10 times the values of respective grades AT 8 to AT 12. (3) Tolerances for T
20、aper Angle be expressed by the one side tolerance of plus or minus in respect to the basic taper angle, or both side tolerances of plus and minus. The tolerances for taper angle shall Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, Us
21、er=Wing, Bernie Not for Resale, 03/14/2007 03:05:38 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*ObL4 87 4933608 0008435 0 4 B 0614-1987 $.AT O AT For example, o -AT or f shall be given. However, in the case of both side tolerances of plus and minus, the values of
22、plus and minus shall be permitted to differ. (4) Tolerance Zone of Taper Angle From the basic taper angle and the position and magnitude of the taper angle tolerances, shall be determsined the taper angle tolerance zone (namely, the fan shaped region between the maximum permissible taper angle and t
23、he minimum permissible taper angle). Remark: The taper angle tolerance zone shall be applicable to the angle between the 2 pairs of straight lines of which interval becomes minimum, and which include the straightness of two generating lines of an actual cone, within an arbitrary axial section of an
24、actual taper angle, namely a cone. 4.4 Cone Form Tolerances The cone form tolerance TF shall consist of the straightness tolerances of generator and circularity tolerances of section normal to axis (see Figs. 2 and 3). By the designation of the cone form tolerances, the straightness tolerance zone a
- 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:
- JIS 0614 1987 ENG
链接地址:https://www.31doc.com/p-3782136.html