JIS-B-0671-2-2002-ENG.pdf

J IS JAPANESE I NDUSTRIAL STANDARD Translated and Published by Japanese Standards Association JIS B 0671-2 :2002 (IS0 13565-2 :1996) Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stratified functional properties - Part 2: Height characterization using the linear material ratio curve ICs 17.040.20; 17.040.30 Reference number : JIS B 0671-2 : 2002 (E) PROTECTED BY COPYRIGHT 6s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- B 0671-2 2002 (IS0 13565-2 : 1996) Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee according to the proposal of establishing a Japanese Industrial Standard from the Japanese Standards Association (JSA), with a draft of Industrial Standard based on the provision of Article 12 Clause 1 of the Industrial Standardization Law. This Standard has been made based on IS0 13565-21996 Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stratified functional properties - Part 2: Height characterization using the linear material ratio curve for the purposes of making easy to compare this Standard with International Standard; to prepare Japanese Industrial Standard conforming with International Standard; and to propose a draft of International Standard which is based on Japanese Industrial Standard. JIS B 0671 group consists of the following three parts with the general title Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stratified functional properties. Part 1: Filtering and general measurement conditions Part 2: Height characterization using the linear material ratio curve Part 3: Height characterization using the material probability curve Date of Establishment: 2002-03-20 Date of Public Notice in Official Gazette: 2002-03-20 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Machine Elements JIS B 0671-2: 2002, First English edition published in 2003-04 Translated and published by: Japanese 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 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, Bernie Not for Resale, 03/12/2007 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 0671-2 : 2002 (IS0 13565-2 : 1996) Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stratified functional properties - Part 2: Height characterization using the linear material ratio curve Introduction This part of JIS B 0671 has been prepared based on the first edition of IS0 13565-2 Geometrical Product specifications (GPS) - Surface texture : Profile method ; Surfaces having stratified functional properties -Part 2 : Height characteriza- tion using the linear material ratio curve published in 1996 without modifying the tech- nical contents. This part of JIS B 0671 is a Geometrical Product Specification (GPS) standard and It influences chain link is to be regarded as a General GPS standard (see TR B 0007). 2 of the chain of standards for roughness profile. For more detailed information of the relation of this part of JIS B 0671 to other standards and the GPS matrix model, see annex A. This part of JIS B 0671 defines a set of parameters, based on the linear material ra- tio curve, to be used for the evaluation of the valley suppressed roughness profile de- fined in JIS B 0671-1. It is based on a three-layer surface model, evaluating the peaks, the core and the valleys separately. “Informations” underlined with dots in this Standard are the matters not included in the original International Standard. Remarks : TR B 0007 is identical with ISO/TR 14638 : 1995 Geometrical Product Specifications (GPS) - Masterplan. Information : A triple stratified surface model is a profile model that the profile con- sists of three independent random processes of a protruding peak to the height direction, a core and a reduced valley. _L_-. 1 Scope This part of JIS B 0671 describes the evaluation process for determining parameters from the linear representation of the material ratio curve (also referred to as the Abbott curve) which describe the increase of the material portion of the surface with increasing depth of the roughness profile. They are intended to aid in assessing the operational behaviour of highly mechanically stressed surfaces. Remarks : The International Standard corresponding to this Standard is as follows. In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21. IS0 13565-2 : 1996 Geometrical Product specifications (GPS) -Surface 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 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 B 0671-2 : 2002 (IS0 13565-2 : 1996) texture : Profile method ; Surfaces having strati- fied functional properties - Part 2 : Height charac- terization using the linear material ratio curve (IDT) 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. If the indication of the year of coming into effect is given to these referred standards, only the edition of in- dicated year constitutes the provision of this Standard but the revision and amendment made thereafter are not applied. The normative references without the indication of the year of coming into effect apply limiting only to the most recent edition (including amendments). JIS B 0601 Geometrical Product Specification (GPS) -Surface texture : Profile method - Terms, definitions and surface texture parameters Remarks : IS0 4287 : 1997 Geometrical Product Specifications (GPS) - Surface tex- ture : Profile method - Terms, definitions and surface texture parameters is identical with the said standard. Geometrical Product Specifications (GPS) -Surface texture : Profile method ; Surfaces having stratified functional properties -Part 1 : Fil tering and general measurement conditions JIS B 0671-1 Remarks : IS0 13565-1 : 1996 Geometrical Product Specifications (GPS) - Surface texture : Profile method ; Surfaces having stratified functional properties - Part 1 : Filtering and gener- al measurement conditions is identical with the said standard. IS0 1302 : 1992 Technical drawings -Method of indicating surface texture 3 B 0601, 3.1, and the following definitions apply. Definitions For the purposes of this part of JIS B 0671, the definitions given in JIS 3 . 1 deep valleys (see figure i). roughness core profde Roughness profile excluding the protruding peaks and 3 . 1 . 1 core roughness depth, Rk Depth of the roughness core profile (see figure i ) . 3 . 1 . 2 material portion, Mrl which separates the protruding peaks from the roughness core profile. Level, in percent, determined for the intersection line 3.1.3 which separates the deep valleys from the roughness core profile. material portion, Mr2 Level, in percent, determined for the intersection line 3.2 roughness core profile. reduced peak height, Rpk Average height of the protruding peaks above the 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 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 B 0671-2 : 2002 (IS0 13565-2 : 1996) Note : The averaging process in clause 4 reduces the effect of outlier values on this parameter. Information : “Protruding peak” which protrudes above the core is discriminated _-*- from “profile peak defined in JIS B 0601. 3.3 reduced valley depths, Rvk through the roughness core profile. Average depth of the profile valleys projecting Note : The averaging process in clause 4 reduces the effect of outlier values on this parameter. 4 Determination of parameters 4 . 1 Roughness profile The roughness profile used for determining the parameters which are the subject of this part of JIS B 0671 shall be calculated according to JIS B 0671 - 1. 4 . 2 Calculating the parameters Rk, Mrl, Mr2 The equivalent straight line, calculat- ed according to 4.3, intersects the abscissae Mr = O % and Mr = 100 % (see figure 1). From these points two lines are plotted to the x-axis, which determine the roughness core profile by separating the protruding peaks and valleys. O 20 40 60 80 100 M o I 20 40 60 801 100 Mr 1 # r 2 Material ratio hlr % Figure 1 Calculation of Rk, Mrl and Mr2 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 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 B 0671-2 : 2002 (IS0 13565-2 : 1996) The vertical distance between these intersection lines is the core roughness depth Their intersections with the material ratio curve defines the material ratios Mrl Rk. and Mr2. 4 . 3 Calculating the equivalent straight line The equivalent straight line is calculat- ed for the central region of the material ratio curve which includes 40 % of the measured profile points. This “central region” lies where the secant of the material ratio curve over 40 % of the material ratio shows the smallest gradient (see figure i). This is de- termined by moving the secant line for AMr = 40 % along the material ratio curve, starting at the Mr = O % position as in figure 1. The secant line for dMr = 40 % which has the smallest gradient establishes the “central region” of the material ratio curve for the equivalence calculation. If there are multiple regions which have equivalent minimum gradient, then the one region that is first encountered is the region of choice. A straight line is then calculated for this “central region” which gives the least square deviation in the direction of the profile ordinates. Note : To ensure the validity of the material ratio curve, the class widths of ordinates of the roughness profile should be selected to be small enough for at least 10 classes to fall within the “central region”. With surfaces having very small roughness or having an almost ideal geometrical plateau, such a fine classifi- cation may no longer be meaningful, because of the limited resolution of the measuring system. In this case the number of classes used in the calculation of the equivalent straight line should be stated in the test results. Information : “Secant line” is a straight line which intersects a curve at two or more The difference between the material ratio curves (%) is positions. “AMY. - _-_. 4.4 Calculating the parameters Rpk and Rvk The areas aböve and below the region of the material ratio curve which delimits the core roughness Rk are shown hatched in figure 1. These correspond to the cross-sectional area of the profile peaks and valleys which protrude out of the roughness core profile. The parameters Rpk and Rvk are each calculated as the height of the right-angle triangle which is constructed to have the same area as the “peak area” or “valley area” respectively (see figure 2). The right-angle triangle corresponding to the “peak area Al” has Mrl as its base, and that corresponding to the “valley area A2” has 100 %-Mr2 as its base. Note : The parameters according to this part of JIS B 0671 should only be calculated if the material ratio curve is “S” shaped as shown in figures 1 and 2 and thus has only one single point of inflection. Experience has shown that this is al- ways the case for lapped, ground or honed surfaces. PROTECTEDBYCOPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 2002 (IS0 13565-2 : 1996) B 0671-2 Conversion of “peak area” and “valley area into equivalent area right-angle triangle O 20 40 60 80 100 1 o 1 20 40 60 84 100 Mf 1 Mr 2 Material ratio Mr % Figure 2 Calculation of Rpk and Rvk 5 Parameter specification on drawings The parameters in this part of JIS B 0671 shall be specified on engineering drawings according to IS0 1302. 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 01:51:23 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 B 0671-2 : 2002 (IS0 13565-2 : 1996) Annex A (informative) Relation to the GPS matrix model For full details about the GPS matrix model, see TR B 0007 A.l Information about this part of JIS B 0671 and its use This part of JIS B 0671 de- fines a set of parameters, based on the linear material ratio curve, to be used for the evaluation of the valley suppressed roughness profile defined in JIS B 0671-1. It is based on a three-layer surface model, evaluating the peaks, the core and the valleys separately. The parameters are intended to aid in assessing the operational behaviour of highly mechanically stressed surfaces. The roughness profile used for determining these parameters shall be calculated according to JIS B 0671-1. A.2 Position i n the GPS matrix model This part of JIS B 0671 is a General GPS standard, which influences the chain link 2 of the chain of standards for