1、DEUTSCHE NORM Auaust 2000 GPS - Surface texture: Profile method Surfaces having stratified functional properties Part 3: Height characterization using the material probability curve English version of DIN EN IS0 13565-3 (IS0 13565-3 : 1998) DIN EN IS0 13565-3 ICs 17.040.20 Geometrische Produktspezif
2、ikationen (GPS) - Oberflchenbeschaffenheit: Tastschnittverfahren - Ober- flchen mit plateauartigen funktionsrelevanten Eigenschaften - Teil 3: Beschreibung der Hhe von Ober- flchen mit der Wahrscheinlichkeitsdichtekurve (IS0 13565-3 : 1998) European Standard EN IS0 13565-3 : 2000 has the status of a
3、 DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/TC 290 to adopt, without alteration, International Standard IS0 13565-3 as a European Standard. The responsible German body involved in its preparation
4、was the Normenausschuss Technische Grund- lagen (Fundamentals in Technology Standards Committee). The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 1302 DIN IS0 1302 IS0 3274 IS0 4287 DIN EN IS0 3274 DIN EN
5、IS0 4287 IS0 13565-1 IS0 13565-2 DIN EN IS0 13565-1 DIN EN IS0 13565-2 National Annex NA Standards referred to (and not included in Normative references, Bibliography and Annex ZA) DIN EN IS0 3274 DIN EN IS0 4287 DIN EN IS0 13565-1 DIN EN IS0 13565-2 GPS - Surface texture: Profile method - Nominal c
6、haracteristics of contact (stylus) instruments (IS0 3274 : 1996) GPS - Surface texture: Profile method - Terms, definitions and surface texture parameters (IS0 4287 : 1997) GPS - Surface texture: Profile method - Surfaces having stratified functional properties - Part 1 : Filtering and general measu
7、rement conditions GPS - Surface texture: Profile method - Surfaces having stratified functional properties - Part 2: Height characterization using the linear material ratio (IS0 13565-1 : 1996) (IS0 13565-2 : 1996) EN comprises 20 pages. No pari of this standard may be reproduced without the prior p
8、ermission of Ref. No. DIN EN IS0 13565-3 : 2000-0 V Deutsches Institut fur Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). English pricegroup 13 Sales No. 1113 12.00 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
9、 IS0 13565-3 May 2000 ICs 17.040.20 English version Geometrical product specifications (GPS) Surface texture: Profile method - Surfaces having stratified functional properties Part 3: Height characterization using the material probability curve (IS0 13565-3 : 1998) Spcification gomtrique des produit
10、s (GPS) - Etat de surface: Mthode du profil - Surfaces ayant des proprits fonctionnelles diffrentes suivant les niveaux - Partie 3: Caractrisation des hauteurs par la courbe de probabilit de matire (IS0 13565-3 : 1998) Geometrische Produktspezifikationen (GPS) - Oberflchenbeschaffenheit: Tastschnitt
11、verfahren - Oberflchen mit plateauartigen funktions- relevanten Eigenschaften - Teil 3: Beschreibung der Hhe von Oberfl- chen mit der Wahrscheinlichkeits- dichtekurve (IS0 13565-3 : 1998) This European Standard was approved by CEN on 2000-04-1 3. CEN members are bound to comply with the CENKENELEC I
12、nternal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN me
13、mber. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN member
14、s are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen
15、 de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 2000. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 13565-3 : 2000 E Page 2 EN IS0 13565-3 : 2000 Foreword Internat
16、ional Standard IS0 13565-3 : 1998 Geometrical product specifications (GPS) - Surface texture: Profile method - Surfaces having stratified functional properties - Part 3: Height characterization using the material probability curve, which was prepared by ISO/TC 21 3 Dimensional and geometrical produc
17、t specifications and verification of the International Organization for Standardization, has been adopted by Technical Committee CEN/TC 290 Dimensional and geometrical product specifications and verification, the Secretariat of which is held by DIN, as a European Standard. This European Standard sha
18、ll be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by November 2000 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standards organizations of the following cou
19、ntries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Endorsement notice The text of the Intern
20、ational Standard IS0 13565-3 : 1998 was approved by CEN as a European Standard without any modification. NOTE: Normative references to international publications are listed in Annex ZA (normative) Con tents Page 1 Scope 3 2 Normative references . 3 3 Definitions 3 4 4 Procedure , 5 Measurement proce
21、ss requirements 5 6 Drawing indications 5 Annex A (normative) Procedures for determining the limits of the linear regions . 6 Annex B (informative) Background information 1 1 Annex C (informative) Determination of UPL and LVL via second derivatives . 15 Annex D (informative) Normalization of the bou
22、nded material probability curve . 17 19 Annex E (informative) Relation to the GPS matrix model Annex F (informative) Bibliography 20 . Annex ZA (normative) Normative references to international publications with their relevant European publications 20 Page 3 EN IS0 13565-3 : 2000 Introduction This p
23、ari of IS0 13565 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISORR 14638). It influences the chain link 2 of the chains of standards on roughness profile and primary profile. For more detailed information on the relation of this standard
24、 to the GPS matrix model see annex E This part of IS0 13565 provides a numerical characterization of surfaces consisting of two vertical random components, namely, a relatively coarse “valley“ texture and a finer “plateau“ texture. This type of surface is used for lubricated, sliding contact, for ex
25、ample in cylinder liners and fuel injectors. The calculations necessary to determine the parameters Kpq, Rvq, and Rmq (Ppq, Pvq, and Pmq) used to characterize these two components separately involves the generation of the material probability curve, the determination of its linear regions, and the l
26、inear regressions through these regions. The parameters are undefined for surfaces not consisting of two such components 1 Scope This part of IS0 13565 establishes the evaluation process for determining parameters from the linear regions of the material probability curve, which is the Gaussian repre
27、sentation of the material ratio curve. The parameters are intended to aid in assessing tribological behaviour, for example of lubricated, sliding surfaces, and to control the manufacturing process. 2 Normative references The following standards contain provisions which, through reference in this tex
28、t, constitute provisions of this part of IS0 13565. At the time of publication, the editions indicated were valid. All Standards are subject to revision, and parties to agreements based on this part of IS0 13565 are encouraged to investigate the possibility of applying the most recent editions of th
29、e standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 1302:1992, Technical drawings - Methods of indicating surface texture. IS0 3274:1996, Geometrical Product Specifications (GPS) - Surface texture: Profile method - Nominal characteri
30、stics of contact (stylus) instruments. IS0 4287: 1 997, Geometrical Product Specifications (GPS) - Surface texture: Profile method - Terms, definitions and surface texture parameters. IS0 13565-1 :i 996, Geometrical Product Specifications (GPS) - Surface texture: Profile method; Surfaces having stra
31、tified functional properties - Part 1: Filtering and general measurement conditions. IS0 13565-2:1996, Geometrical Product Specifications (GPS) - Surface Texture: Profile method; Surfaces having stratified functional properties - Pari 2: Height characterization using the linear material ratio curve.
32、 3 Definitions For the purposes of this pari of IS0 13565, the definitions given in IS0 3274, IS0 4287, IS0 13565-2 and the following apply. 3.1 material probability curve a representation of the material ratio curve in which the profile material length ratio is expressed as Gaussian probability in
33、standard deviation values, plotted linearly on the horizontal axis NOTE - This scale is expressed linearly in standard deviations according to the Gaussian distribution. In this scale the material ratio curve of a Gaussian distribution becomes a straight line. For stratified surfaces composed of two
34、 Gaussian distributions, the material probability curve will exhibit two linear regions (see 1 and 2 in figure 1). Page 4 EN IS0 13565-3 : 2000 0.5 O E, -0.5 -1 -1.5 -2 - - - - - -3s -2s -5 o s 25 3s Key 1 Plateau region 2 Valley region 3 4 5 Debris or outlying peaks in the data (profile) Deep scrat
35、ches or outlying valleys in the data (profile) Unstable region (curvature) introduced at the plateau to valley transition point based on the combination of two distributions Figure 1 - Material probability curve 3.2 Rpq (Ppq) parameter slope of a linear regression performed through the plateau regio
36、n See figure 2. NOTE - Rpq (Ppq) can thus be interpreted as the Rq (Pq)-value (in micrometres) of the random process that generated the plateau component of the profile. 3.3 Rvq (Pvq) parameter slope of a linear regression performed through the valley region See figure 2. NOTE - Rvq (Pvq) can thus b
37、e interpreted as the Rq (Pq)-value (in micrometres) of the random process that generated the valley component o the profile. 3.4 Rmq (Pmq) parameter relative material ratio at the plateau to valley intersection See figure 2. 4 Procedure The roughness profile used for determining the parameters Rpq,
38、Rvq and Rmq shall be calculated in accordance with IS0 13565-1. This roughness profile is different from that in IS0 4287. The profile for determining the parameters Ppq, Pvq and Pmq shall be the primary profile. Three non-linear effects can be present in the material probability curve as shown in f
39、igure 1 for measured surface data from a two-process surface. These effects shall be eliminated by limiting the fitted portions of the material probability curve, using only the statistically sound, Gaussian portions of the material probability curve excluding a nu mber of influences. Page 5 EN IS0
40、13565-3 : 2000 In figure 1 the non-linear effects originate from: - debris or outlying peaks in the data (profile) (labelled 3); - deep scratches or outlying valleys in the data (profile) (labelled 4); and - unstable region (curvature) introduced at the plateau to valley transition point basedon the
41、 combination of two distributions (labelled 5). These exclusions are intended keep the parameters more stable for repeated measurements of a given surface. Figure 2 shows a profile with its corresponding material probability curve and its platettu and valley regions and the parts of the surface that
42、 defines the two regions. The profile has a peak that is outtyirrgctnd the figureshows how it does not influence the parameters. Figure 2 also shows how the bottom parts of thedeepest graves, which will vary significantly depending on where the measurements are made on a surface, are disrepded when
43、determining the parameters. 0.5 li -2 I I -3s -2s -5 o s 2s 3s UPL LPL UVL LVL II 1 0.1 1 10 3050fO 90 99 99.9 % Figure 2 - Roughness profile with its corresponding material probabii cweanci the regions used in the definitions of the parameters Rpq, Rvq, and Rnlq 5 Measurement process requirements T
44、he following criteria are designed to ensure that the profile represents a proper two-process surface and that the measuring process is adequate for calculating a stable material probability curve resulting in reliable parameter values. These criteria shall be met in order for the parameters Rpq, Rv
45、q, and Rmq (Pp4, Pvq, and Pmq) to bedefined: - The instrument shall be capable of measuring a value of Ry from an optical flat that is less than 30 % of the nominal value of Rpq (Ppq). - The vertical resolution of the material probability curve shall be such that at least40 dasses fall within the li
46、near plateau and linear valley regions respectively. - The digital data density of the material probability curve shall be such that at least 100 profile ordinates fall within the linear plateau and linear valley regions respectively. - The ratio Rvq: Rpq (Pq Ppq) shall be at least 5. - The conic se
47、ction regressions result in a hyperbolic solution (see annex A). If the profile does not satisfy the above criteria, a suitable warning message shall give the reason for the failure. 6 Drawing indications The parameters specified in this part of IS0 13565 shall be indicated on drawings in accordance
48、 with IS0 1302. Page 6 EN IS0 13565-3 : 2000 Annex A (norm ative) Procedures for determining the limits of the linear regions Clauses A.l through A.3 specify the procedures for determining the upper plateau limit, UPL, and the lower valley limit, LVL. Clauses A.4 through A.6 specify the procedures f
49、or determining the lower plateau limit, LPL, and the upper valley limit, UVL . Clause A.7 specifies the procedure for determining the calculation of parameters. A.l Initial conic fit A conic section is initially fitted through the material probability curve since it is a very good approximation of the expected form of the material probability curve of surfaces consisting of two vertical random components. This initial conic fit provides a framework for subsequent operations on the material probability curve. Fit a conic section z = Ax2 + Bxz + Cz2 + Dx -+ E where
