Source: https://www.scribd.com/document/156321213/213N159
Timestamp: 2016-10-27 01:09:19
Document Index: 89545287

Matched Legal Cases: ['art 3', 'art 2', 'art 1', 'arts3', 'art 1', 'art 2', 'art 1', 'art 3', 'art 1', 'art 2', 'art 1', 'art 1']

213N159
BrowseBrowseInterestsBiography & MemoirBusiness & LeadershipFiction & LiteraturePolitics & EconomyHealth & WellnessSociety & CultureHappiness & Self-HelpMystery, Thriller & CrimeHistoryYoung AdultBrowse byBooksAudiobooksComicsSheet MusicBrowse allUploadSign inJoinBooksAudiobooksComicsSheet MusicISO/TC 213 N159
ISO/CD 1302 (E)
ISO/TC 213/WG 8 Secretariat: Danish Standard Association
Geometrical product specifications (GPS) — Indication of surface texture
WARNING This document is not an ISO standard. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an International Standard.
© ISO 1997 - All rights reserved
Document type: Document subtype: Document stage: Document language:
International Standard Not applicable (20) Preparatory E
ISO/CD 1302(E)
Page 1 2 3 4 5 6 7 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Graphical symbols for the indication of surface texture . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Indication of surface texture requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Interpretation of indications of surface texture requirements and their values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Indication on drawings and other technical product documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Annexes A Proportions and dimensions of graphical symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B Synoptic tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D Necessary indications in order to ensure unambiguous control of surface functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E Exhaustive explanation on consequences of the new ISO surface texture standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F Relation to the GPS matrix model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copyright notice This ISO document is a working draft and is copyright protected by ISO. While the reproduction of working drafts or committee drafts in any form for use by participants in the ISO standards development process is permitted without prior permission from ISO, neither this document nor any extract from it may be reproduced, stored or transmitted in any form for any other purpose without written permission from ISO. Requests for permission to reproduce this document for the purpose of selling it should be addressed as shown below or to ISO's member body in the country of the requester: Secretariat of ISO/TC 10/SC 1 Norsk Teknologistandardisering Oscars gate 20, Postboks 7072, N-0306 Oslo, Norway Att.: Mr. Jan F. Ulvås Tel. +47 22 59 67 30 FAX +47 22 59 67 33 e-mail: jan.ulvaas@nts.no Secretariat of ISO/TC 213 Danish Standards Association Kollegievej 6, DK-2920 Charlottenlund, Denmark Att.: Mr. Hans Henrik Køster Tel. +45 39 96 61 01 Fax +45 39 96 61 02 e-mail: hhk@ds.dk
21 23 26 29 32 34 35
Reproduction for sales purposes may be subject to royalty payments or a licensing agreement. Violators may be prosecuted.
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental or non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote ISO 1302 was prepared jointly by the Technical Committee ISO/TC 10 Technical drawings, product definition and related documentation, SC 1 Basic conventions and ISO/TC 213, Dimensional and geometrical product specifications and verification. This International standard cancels and replaces ISO 1302:1994 of which it constitutes a technical revision. Annex A forms an integral part of this International Standard. Annexes B, C, D, E, F and G are for information only.
For more detailed information of the relation of this standard to other standards and the GPS matrix model see annex F.All rights reserved
This International Standard is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638).ISO/CD 1302(E)
© ISO 1997 . [TO BE FINALIZED]
. It influences link 1 of the chain of standards on roughness profile. waviness profile and primary profile.
reference is made to ISO 8785 which covers surface imperfections. and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standard indicated below. which cannot be specified using surface texture parameters.Committee Draft © ISO 1997 . definitions. Members of IEC and ISO maintain registers of currently valid International Standards. This International Standard does not provide rules for the choice of surface texture parameters or values of surface texture parameters.
For the indication of requirements for surface imperfections (pores.g.All rights reserved
This International Standard specifies the rules for the indication of surface texture in technical product documentation (e. It facilitates the possibilities of expressing requirements for surfaces by means of: profile parameters related to the R-profile (roughness parameters). Geometrical product specifications (GPS) — Surface texture: Profile method — Terms. the editions indicated were valid. definitions and surface texture parameters
. constitute provisions of this International Standard. ISO 129:1985. reports) by means of graphical symbols and textual indications. General principles for the creation of graphical symbols — Part 2: Graphical symbols for use in technical product documentation ISO 4287:1997. scratches etc. parameters related to the material ratio curve according to ISO 13565-2 and ISO 13565-3. the W-profile (waviness parameters) and the P-profile (structural parameters) according to ISO 4287. At the time of publication.). All standards are subject to revision. Technical drawings — Dimensioning — General principles. contracts. Electrodeposited coatings of nickel plus chromium and of copper plus nickel plus chromium ISO 3274:1996.
The following standards contain provisions which. through reference in this text. specifications. drawings. motif parameters (roughness motif and waviness motif) according to ISO 12085. methods of execution and special indications1 ISO 1456:1988. Geometrical Product Specifications (GPS) — Surface texture: Profile method — Nominal characteristics of contact stylus instruments ISO 3461-2:1987.
Under preparation Under revision
.1 fundamental graphical symbol (for surface texture) graphical symbol indicating that a requirement for surface texture exists NOTE . ISO 4288.Geometrical tolerancing . symbols. Technical drawings .Tolerancing of form. ISO 10209-1. the terms and definitions given in ISO 3274.All rights reserved
ISO 4288:1996.Generalities. Geometrical Product Specifications (GPS) — Surface texture: Profile method. ISO 4287.Geometric features — Part 1: General terms and definitions2
For the purpose of this International Standard. cast and forged parts3 ISO 10209-1:1992. Geometrical product specifications (GPS) — Surface texture: Profile method — Rules and the procedures for the assessment of surface texture ISO 8785:—. orientation. Technical drawings . Geometrical Product Specifications (GPS) — Surface texture: Profile method. Geometrical Product Specifications (GPS) — Surface texture: Profile method — Metrological characteristics of phase correct filters ISO 12085:1996.Simplified representation of moulded. Technical product documentation — Vocabulary — Part 1: Terms relating to technical drawings: general and types of drawings ISO 11562:1996. ISO 11562. Geometrical Product Specifications (GPS) . Surfaces having stratified functional properties — Part 2: Height Characterization using the linear material ratio curve ISO 13565-3:—.See figure 1.ISO/CD 1302(E)
© ISO 1997 . indications on drawings3 ISO 10135:1994. definitions. Geometrical Product Specifications (GPS) — Inspection by measurement of workpieces and measuring equipment — Part 1: Decision rules for proving conformance or non-conformance with specification2 ISO 14660-1:—. Geometrical product specifications (GPS) — Surface texture: Profile method — Motif parameters ISO 13565-1:1996. Surfaces having stratified functional properties — Part 3: Height Characterization using the material probability curve2 ISO 14253-1:—. Geometrical product specifications (GPS) — Surface imperfections — Terms. location and run-out . Geometrical Product Specifications (GPS) — Surface texture: Profile method. definitions and parameters2 ISO 1101:1983. ISO 14660-1 and the following apply. 3. Surfaces having stratified functional properties — Part 1: Filtering and general measurement conditions ISO 13565-2:1996.
3).The parameter symbols are consisting of letters and numerical values e.2 basic graphical symbol (for surface texture) expanded basic graphical symbol indicating that material is to be either removed or not removed in order to obtain the specific surface texture NOTE . The fundamental graphical symbol on figure 1 used alone (without complementary information) are not a requirement. These graphical symbols shall usually be supplemented with complementary surface texture requirements in the form of numerical values and text (see 5).2). a bar shall be added to the fundamental graphical symbol. etc.4 surface (texture) parameter parameter expressing a micro geometrical property of a surface 3. 4. The basic graphical symbol on figure 2 used alone (without complementary information) are not a requirement. 4. as shown i figure 2. or whether it is not allowed to remove material for obtaining the specified surface (see 4. then no decision is taken as to whether removal of material is necessary for obtaining the specified surface (see 4. AR.5 (surface) parameter symbol symbol indicating the type of surface texture parameter NOTE .3 complete graphical symbol (for surface texture) fundamental or basic graphical symbol expanded in order to facilitate the addition of complementary surface texture requirements 3. Wz. 3.2 Basic graphical symbol for removal of material
If removal of material by machining is required for obtaining the specified surface. but it shall be recognized that the graphical symbols used alone in some instances can have a special meaning on the technical drawing (see 7). Ramax.1 Fundamental graphical symbols for surface texture
The fundamental graphical symbols consist of two straight lines of unequal length inclined at approximately 60E to the line representing the considered surface.g. Wz1max.See figures 2 and 3.: Ra. Rpk.© ISO 1997 .All rights reserved
3. Rpq.
Figure 1: Fundamental graphical symbol for surface texture If the fundamental graphical symbol is used with complementary supplementing information (see 5).
Graphical symbols for the indication of surface texture
Requirements for surface texture are indicated on technical drawings by several variants of graphical symbols each having their significant meaning.
. as shown in figure 1.
a circle is added to the complete graphical symbol illustrated in figure 4. represented on the drawing by a closed outline of the workpiece. as shown in figure 4. b) material shall be removed.All rights reserved
Figure 2: Basic graphical symbol indicating that removal of material is required 4.4 Complete graphical symbol
When complementary requirements for surface texture characteristics have to be indicated (see clause 5).ISO/CD 1302(E)
© ISO 1997 . a circle shall be added to the fundamental graphical symbol.
a) any manufacturing process permitted.3 Basic graphical symbol when removal of material is not permitted
If removal of material is not permitted for obtaining the specified surface. as shown in figure 5.5 Graphical symbol for "all surfaces around a workpiece outline"
When the same surface texture is required on all surfaces around a workpiece (integral features). a line is added to the longer arm of any of the graphical symbols illustrated in figures 1 to 3. For special use of this basic graphical symbol see 6. as shown in figure 3.
Figure 3: Basic graphical symbol when removal of material is not permitted 4.
NOTE: The outline on the drawing represent the six surfaces shown on the 3D-representation of the workpiece
Figure 5: Example of a surface texture requirement applying to all (six) surfaces represented by the outline on the drawing
. c) removal of material not permitted
Figure 4: Complete graphical symbol 4.
1. manufacturing process.position x is former practice and is no longer endorsed 5. filter window or sampling length. followed by the surface texture parameter denomination followed by its numerical value located at position "a" (see figure 7) using one text string.All rights reserved
4.1 Position of complementary surface texture requirements in the complete graphical symbol
The positions of the various surface texture requirements in the complete graphical symbol are shown in figure 7 and will be detailed in the following. 0. /. is to be indicated in the complete graphical symbol.1.e) for the location of complementary requirements .1 One single surface texture requirement
If only one single surface texture requirement. e. It may be necessary to set up requirements for several different surface texture parameters in order that the surface requirements ensure unambiguous functional properties of the surface.g.1. a circle is added to the complete graphical symbol illustrated in figure 4. it shall be located in the complete graphical symbol in position "a" (figure 7): Filter window or sampling length followed by an oblique stroke.
Figure 6: Surface texture requirement applies to any surface of the workpiece
Indication of surface texture requirements
In order to ensure unambiguity of a surface texture requirement in relation to the function of the particular surface.8 / Rz 6. Only use positions "a" through "e". The use of position "x" is no longer endorsed. the numerical value and the filter window/sampling length.6
Graphical symbolization for surface texture requirement for any surface
When the same surface texture is required on any surface of a workpiece (integral features) on a technical drawing. surface lay and its orientation and a possible machining allowances.2 and 5. numerical values and filter window/sampling length can be located at different positions in the complete graphical symbol with the same meaning: 5. it is always necessary. and the symbol shall be placed near the title block of the drawing.1 Surface texture parameter. as shown in figure 6. consisting of the surface texture parameter.
. in addition to the indication of both a surface texture parameter and the requirement(s) for its numerical value.3). to indicate other requirement e.
Figure 7: Positions (a .0025-0. numerical value and filter window/sampling length Surface texture parameters. 5.© ISO 1997 .8 (see 5.g.
1. e. of the surface lay. it shall be indicated as follows: The first surface texture requirement is located at position a (as stated in 5. etc.3 Surface lay and orientation The symbol of the required surface lay and the orientation. ISO 12085. plated. e.1) How many sampling lengths make up the evaluation length (if relevant.7 and ISO 10135. ISO 13565-2 and ISO 13565-3 respectively. etc. implying that this was a specification limit of the Ra parameter.2.6.g. Previously.2. see also 5. are located at position "d" (see figure 7).1).1. the graphical symbol is enlarged accordingly in the vertical direction.2. Indication of surface texture requirement on the "x" position and filter on the a position (as given in former editions of ISO 1302 shall be avoided on new drawings. 5.1.g.1.1. 5.All rights reserved
Indication of surface texture requirement on the "x" position and filter on the "a" position (as given in former editions of ISO 1302 shall be avoided on new drawings and a surface texture requirement shall always include both the parameter denomination and the related numerical value of the specification limit. "X". Their parameter denominations are presented in tabular form below.1 Indication of profile and parameter types Three principal groups of surface texture parameters have been standardized for use in connection with the complete symbol. see also 5. to make room for more lines. 5.2 Indication of profile type.3). 5. when the symbol is enlarged (see 5.2. parameter type and requirements for parameter values
The parameter denomination and the associated numerical value include four items of information which are essential for the interpretation of the requirement: Which of the three surface profiles (R. "M". it was common practice that at position "x" it was adequate to indicate only the numerical value of the specification limit. shall be located at position "c" (see figure 7).ISO/CD 1302(E)
© ISO 1997 .1. to produce the surface. W or P) is indicated Which characteristic of the profile is indicated (see 5.2) How the indicated specification limit shall be interpreted (see 5.1. 5.3). The position a and b is moving upwards. If a third or more requirements are to be indicated.2 Manufacturing method The manufacturing method. "=". if any. see 5.
The indication of a surface texture requirement shall therefore include both the parameter denomination and the numerical value of the specification limit. 5. treatment.4 Machining allowance The required machining allowance is indicated as a numerical value using the unit mm at position "e" (see figure 7).2 and 5. see also 5. ground.5. coatings or other requirements for the manufacturing process etc.
. The second surface texture requirement shall be located at position b.2 Two or more surface texture requirements
If one complete graphical symbol is used to indicate two or more surface texture requirements. The definitions of the parameters can be found in ISO 4287. turned.
3 for indication of the "max-rule" for the interpretation of the specification limit.2
Motif parameters (ISO 12085)
Table 2 indicates the parameter denominations of the surface parameters defined in ISO 12085.
. The parameters in ISO 12085 are only defined for the R. NOTE .1. ISO 13565-3 and ISO 12085)
Two different parameter systems are associated with the material ratio curve.Attention is drawn to the fact that the R. See 5.and W-profiles in ISO 12085 are defined by means of another filtering method (motifs) than the one used for other parameter systems defined in ISO 4287.and W-profiles. 5.and P -profiles).All rights reserved
NOTE .2. Table 3 indicates the parameter denominations related to the linear material ratio curve.© ISO 1997 . Table 4 indicates the parameter denominations related to the probability material ratio curve (ISO 13565-3). Table 2: Motif parameter denominations according to ISO 12085 Parameters Roughness profile Roughness motif parameters Waviness profile Waviness motif parameters 5.valley R-profile parameters Rp Rv Rz Roughness parameters W-profile parameters Waviness parameters P-profile parameters Structure parameters Rc Rt mean value Ra Rq Rsk Rku Distance parameters RSm WSm PSm Hybrid parameters R)q W)q P)q Curves and related parameters
Rmr Wmr Pmr
Wp Wv Wz Wc Wt Wa Wq Wsk Wku Pp Pv Pz Pc Pt Pa Pq Psk Pku
Wmr(c) W*c Pmr(c) P*c
5. The parameters are defined by two different filtering processes.If the parameter denominations are used as indicated in this clause 5.1. Profile parameters are defined with Gauss filtering according to ISO 11562. These parameters are defined both for the R-profile and the P-profile.1 Profile parameters (ISO 4287)
Table 1 indicates the parameter denominations of the surface parameters defined in ISO 4287.1.3 R W Rx Wx AR AW Wte
Parameters based on the material ratio curve . ISO 13565-1 and ISO 12085 respectively. Table 1: Denomination of profile parameters according to ISO 4287
Amplitude parameter top .2. ISO 13565-2 and ISO 13565-3. it means that the default definition or the default interpretation of the specification limit ("16%-rule") is required.2.2. W. These parameters are only defined for the R-profile.(ISO 13565-2.1. The profile parameters in ISO 4287 are defined for three surface profiles (R-.2.
.. Rt3. consists of five sampling lengths. RSm. 5. the following symbol is used: Rp3.2. the number of sampling lengths constituting the evaluation length is of decisive importance..ln The surface texture requirement on the drawing applies to the evaluation length. are defined in ISO 4288: R-profile . lr: ln = 5 × lr This means that the parameter denominations of Rp. it is necessary to include the number of sampling lengths in the parameter denomination in order to obtain an unambiguous surface texture requirement. it means that the requirement is the default evaluation length. Certain parameters are defined on the basis of the sampling length. If the number of sampling lengths within the evaluation length is to differ from the default number of five.2..2. Rz.. Rv. When the parameter is defined on the basis of the sampling length. it shall be indicated in the symbol. Rz3. Rc. NOTE .
. Rt. .4 of ISO 4288.. ISO 13565-2 and ISO 13565-3). The default evaluation length. ISO 12085..1.In those cases where no default definition exists for the number of sampling lengths within the evaluation length.2. . If e. If the parameter denomination is indicated as shown in 5. if it is defined in the pertinent standards. Ra.1 Profile parameters (ISO 4287)
The default evaluation lengths for the profile parameters defined in ISO 4287. as shown in table 1 indicate that the evaluation length is equal to five sampling lengths.3.number of sampling lengths within the evaluation length .. .. Rc3. the evaluation length is to consist of three sampling lengths. Ra3.g. others on the basis of the evaluation length (See ISO 4287. Table 4: Denominations of parameters based on the probability material ratio curve according to ISO 13565-3 Parameters Roughness profiles Filtering according to ISO 13565-1 Structure profiles Filtering 8s Rpq Ppq Rvq Pvq Rmq Pmq Rk Rke Rpk Rpke Rvk Rvke Mr1 Mr1e Mr2 Mr2e
5. Rv3.ISO/CD 1302(E)
© ISO 1997 . see 5.The default evaluation lengths of the roughness parameters are defined in 4.2 Evaluation length .. and 7. For sampling lengths.. . RSm3.All rights reserved
Table 3: Denominations of parameters based on the linear material ratio curve Parameters Roughness profile parameters according to ISO 13565-2 Filtering according to ISO 13565-1 Roughness profile parameters according to ISO 13565-2 Filtering according to ISO 12085 according to ISO 13565-2 and ISO 12085. ln.
2. indication of the number of sampling lengths in the parameter denomination of structure parameters is not relevant. Rpq8. Consequently. P-profile . NOTE .© ISO 1997 .g. ISO 13565-3)
R-profile . Rvk.2.2. Wz5. At present. etc. 5.The sampling length concept is not relevant in connection with P parameters. NOTE . Rvk8.2. If the number of sampling lengths within the evaluation length is to differ from the default number of five.4 of ISO 4288 as the entire length of the feature. Rmq as shown in tables 3 and 4 indicates that the evaluation length is equal to five sampling lengths. indication of the number of sampling lengths in the parameter denomination of motif parameters is not relevant.The default evaluation lengths for R parameters related to the material ratio curve are defined in 7 of ISO 13565-1 to be five sampling lengths: ln = 5 × lr This means that the parameter denominations of Rk. it shall be indicated in the symbol.Structure parameters. Consequently. the same comments as above for the motif parameters apply. Rpk. Rpq.
The number of default evaluation lengths for waviness parameters is under consideration by ISO/TC 213. The default evaluation length for structure parameters is defined in 4. Wa3.The sampling length concept is not relevant in connection with P parameters.Waviness parameters. etc.3 Parameters based on the material ratio curve . Under consideration in ISO/TC 213. no standardized default evaluation lengths exist for the waviness parameters4. Rvke.g.4 of ISO 4288 as the entire length of the feature. Rvq. If e. It has not yet been established how motif parameters with another evaluation length than the default evaluation length are to be indicated in the complete symbol 5. 5. Rvq8.All rights reserved
W-profile . Rpk8..2 of ISO 12085 and are indicated to be 16 mm.(ISO 13565-2. Rpke. NOTE . e. the following symbol is used: Rk8.2 Motif parameters (ISO 12085)
The default evaluation lengths of motif parameters are given in 5.
. the evaluation length is to consist of eight sampling lengths. P-profile . Rmq8 NOTE . Consequently.The default evaluation length of P-profile parameters is defined in 4. indication of the number of sampling lengths in the parameter denomination of structure parameters is not relevant. The number of sampling lengths shall always be included in the parameter denomination of waviness in order to obtain an unambiguous surface texture requirement.For the parameters Rke.Attention is drawn to the fact that the evaluation length concept in the case of motif parameters has another meaning that of other surface texture parameters in that the sampling length concept does not exist.
a) in text
b) in drawings
Figure 8: Parameter denomination where the 16% rule applies (default filter window)
Figure 9: Parameter denomination where the max rule applies (default filter window) 5.
. surface texture is defined in a filter window . The filter window is limited by one filter which cuts off short wavelengths (short wave filter) and by another filter which cuts off long wavelengths of the surface (long wave filter). This means that the filter window is the wavelength range which is included in the evaluation.3. 5.The "16%-rule" is defined as the default rule for all indications of surface texture requirements.3. If the max rule is to apply to a surface texture requirement. The filters and their transmission characteristics are defined in ISO 11562.3.3 Parameters based on the material ratio curve .ISO/CD 1302(E)
© ISO 1997 .(ISO 13565-2.3. This means that the "16%-rule" applies to a surface texture requirement when the parameter denomination as shown in 5. "max" is added to the parameter (see figure 9).2.3 Indication of filter window and sampling length for the parameter
As a main rule. an additional.3 of ISO 4288 respectively.2.1 is applied (see figure 8).All rights reserved
5. NOTE . special form of filtering is used (see 5. the "16% rule" and the "maxrule" respectively.2.2).2.the wavelength range between two defined filters (see ISO 3274 and ISO 11562). see 5.4 of ISO 12085). 5.2.The cut-off value of the long wave filter is also designated the sampling length.3 Tolerance limits for numerical values of surface texture parameters Two different ways exist of interpreting the specification limits of surface texture. The filters are characterized by the so-called cut-off value.1 Profile parameters (ISO 4287)
The "16%-rule" and the "max-rule" are both applicable to the profile parameters defined in ISO 4287.2 Motif parameters (ISO 12085)
The motif parameters are defined using only the "16%-rule" (see 5. For motif parameters.2 and 5. NOTE . ISO 13565-3)
The "16%-rule" as well as the "max-rule" apply to all parameters related to the material ratio curve defined in ISO 13565-2 and ISO 13565-3.
4 of ISO 3274.© ISO 1997 . 0. e. 0.4 of ISO 3274.Roughness parameters
The cut-off value designations of the R-profile filter window is 8s (short wave filter) and 8c. -0.3.g. See e. if it exists.1.8. Default filter windows of the roughness parameters are defined in combination by 7 of ISO 4288 and 4. e.
Figure 10: Indication of filter window in connection with a surface texture requirement In some cases it may be relevant to indicate only one of the two filters in the filter window. NOTES 1 Certain surface texture parameters do not have a defined default filter window or a default short wave filter or a default sampling length (long wave filter).Waviness parameters
The cut-off value designations of the W-profile filter window is 8c (short wave filter) and 8f. e. The second filter then has its default value. 2 To provide assurance that the surface is controlled unambiguously by the surface texture requirement. the sampling length (long wave filter). The filter window is indicated by indicating the cut-off values of the filters (in millimeters). 5.3 for the definition of default filter windows). the hyphen is maintained to indicate whether the indication is of the short wave or the long wave filter. In these cases the surface texture indication shall specify filter window.g.3. short wave filter or long wave filter to ensure that the surface texture requirement is unambiguous. 5.2 W-profile . the filter window shall be indicated in connection with the parameter denomination in all cases. ISO 4288 defines the default long wave filter 8c. ISO 3274 defining the default short wave filter 8s related to 8c.1 Profile parameters (ISO 4287) 5.g.3. 5. the long wave filter being indicated second.008.1 R-profile . The short wave filter is indicated first.3.1.008-0. it may only be necessary to indicate the long wave filter 8c.All rights reserved
Where no filter window is indicated in connection with the parameter denomination.g. the surface texture requirements in figures 8 and 9 where no filter window is indicated. In the event of the filter window being indicated. If control of both the short wave filter and the long wave filter in the filter window for roughness parameters is required. both shall be indicated in connection with the parameter symbol.2 and 5. See figure 10. If only one filter is indicated.8.25 (long wave filter indication).1. separated by a hyphen ("-"). the default filter window applies to the surface texture requirement (see 5.(short wave filter indication) or -0. the sampling length (long wave filter). The short wave filter 8s will then be as specified in 4.3.3.
3. P-parameters do not have any long wave filter. A long wave filter (sampling length) can be indicated for P-parameters if required for the function of the workpiece. The long wave filter having the cut-off value 8c = 0. Therefore. P-parameters do not have any long wave filters (sampling lengths). 5. the parameter value and the filter window are indicated.unilateral or bilateral
The surface texture requirement can be indicated as unilateral or bilateral specifications. ISO 13565-3) ISO 13565-1 only anticipates the use of two different sampling lengths (long wave filter) for the R-profile. the parameter value and the filter window as described in 5.Structure parameter
The cut-off value designations of the P-profile of the filter window is 8c (short wave filter) and no designation of the long wave filter has been standardized (8p as proposal).3. The specification limits are expressed by indication of the parameter denomination. as there is no default definition of 8s in this case.ISO/CD 1302(E)
© ISO 1997 . then the parameter denomination shall be preceded by the letter L.008-2. default values of the cut-off values of the short wave filter 8s have been defined as a function of the applicable evaluation length (see 5. the short wave filter 8s shall be indicated in connection with the parameter denomination to ensure an unambiguous requirement. the cut-off value of the short wave filter 8s shall always be indicated to ensure an unambiguous requirement. nor is the ratio between 8f and 8c. they are to be understood as a unilateral upper specification limit of the parameter in question ("16%-rule" or "max-rule" limit).4. In the default case. 5. NOTE . The second standardized filter window (special definition). If P-parameters are indicated according to ISO 13565-3. If the parameter denomination. 5.008 mm 5.All rights reserved
No default values of the filter window of the W-profile is defined.3.8 mm is the default filter having 8s = 0. L Ra 0.4 Tolerance types .0025 mm as the related cut-off value of the short wave filter. which is given in ISO 13565-1 as 0.For the default evaluation length of 16 mm. In the default case. 8s = 0.g.
. is a standard filter window specified in ISO 3274.32. Therefore.2 Motif parameters (ISO 12085) For motif parameters.3. A long wave filter can be indicated for P-parameters if required for the function of the workpiece.3 P-profile . this filter window applies to Rparameters related to the material ratio curve.3 Parameters based on the material ratio curve .2 and 5. e.5 mm.1. Where no filter window is indicated. the filter window shall always be indicated by both cut-off values to ensure an unambiguous requirement.1 Unilateral tolerance of a surface parameter When the parameter denomination. the parameter value and the filter window indicated are to be interpreted as a unilateral lower specification limit of the parameter in question (16% or max limit). No default value of the cut-off value of the short wave filter of the P-profile 8s 4 has been defined.(ISO 13565-2. 5.2 of ISO 12085).
© ISO 1997 .
a) in text drawings
Figure 12: Indication of a machining process and the requirement for the roughness of the resulting surface
a) in text in drawings
Figure 13: Indication of a coating and the roughness requirement The manufacturing process of the specified surface can be presented as a text and be added to the complete symbol as shown in figures 12 and 13. coating types.4. It is consequently necessary in almost all cases to state the manufacturing process.5 Indication of manufacturing method or other information regarding the method
The surface texture parameter value of an actual surface is strongly influenced by the detailed form of the profile curve. The addition to the complete symbol can be used only as information . parameter value and filter window . etc. coating thickness.also in addition to the information of importance to the geometrical properties of the surface.g. NOTE . the upper specification limit ("16%-rule" or "max rule" limit) preceded by U being indicated over the lower specification limit preceded by L (see figure 11).2 Bilateral tolerance of a surface parameter A bilateral tolerance is indicated in the complete symbol by placing the requirement for the two tolerance limits above each other.
.do therefore not necessarily result in unambiguous function of the surface. e.In addition to ISO 1456. Metallic and other non-organic coatings.indicated solely as a surface texture requirement . The coating in figure 13 is as an example indicated using the symbolic presentation in ISO 1456. There may also be other reasons for finding it appropriate to indicate the process. as this process to some extent results in a particular detailed form of the profile curve. 5. A parameter denomination. The upper and lower specification limits are not necessarily expressed by means of the same parameter denomination and filter window. ISO/TC 107.All rights reserved
Figure 11: Bilateral surface specification 5. has issued a number of standards dealing with issues such as methods of indication coatings.
5.7 Indication of machining allowance
The machining allowance is generally indicated only in those cases where more process stages are shown in the same drawing.6
Indication of the surface lay
The surface lay and direction of the lay emanating from the machining process (e.
Figure 14: Direction of lay of the surface pattern indicated as being perpendicular to the drawing plane NOTE .The direction of lay is the direction of the prevailing surface pattern which is usually determined by the manufacturing process used. traces left by tools) can be indicated in the complete symbol by using the symbols shown in table 5 and illustrated by the example in figure 14.ISO/CD 1302(E)
© ISO 1997 . 5. Machining allowances are therefore found e. The machining allowance may also be indicated in connection with a normal surface texture requirement (see figure 15). For the definition and application of requirements for machining allowances.
. it may occur that the requirement for the machining allowance is the only requirement added to the total or complete symbol. The indication of machining allowance by the defined symbol is not applicable to textual indications. The indication of surface lay by the defined symbols is not applicable to textual indications.g. including a requirement for a machining allowance of 3 mm When the machining allowance is indicated.g.
Figure 15: Indication of surface texture requirements for the "final" workpiece shown on the casting drawing. in drawings of raw cast and forged workpieces with the final workpiece being shown in the raw workpiece. see ISO 10135. The symbols in table 5 indicate the lay and direction of lay in relation to the drawing plane containing the surface texture requirement.
© ISO 1997 .All rights reserved
1. the indicated surface texture requirements are applicable for the surface after machining.
Indication on drawings and other technical product documentation
Surface texture requirements shall be indicated only once for a given surface and. coating etc.ISO/CD 1302(E)
© ISO 1997 . or the basic graphical symbol. in conformity with ISO 129 (see figure 16). the interpretation rules of this standard and the content the relevant surface texture standards shall be taken into account. if possible. 7.1 On an outline or by a leader line The surface texture requirement (graphical symbol) shall touch the surface or be connected to it by means of a leader line terminating in an arrowhead. the interpretation is: The specified surface shall be left in the state resulting a preceding manufacturing process regardless the condition was obtained by removal of material or by other means.1 Position and orientation of the graphical symbol and its annotation
The general rule is that the graphical symbol together with the complementary information shall be oriented so that they can be read from the bottom or right-hand side of the drawing.All rights reserved
Interpretation of indications of surface texture requirements and their values
Surface texture requirements on a technical drawing shall as a principle consist of at least one of the symbols shown in figures 1 to 6 and the supplementary annotations described in 5. In this case. Unless otherwise specified. shown in figure 3. is used on a drawing concerning a manufacturing process. (see also Annex C).2.
. or the leader line terminating in an arrowhead. Graphical symbols used alone have only a meaning as a surface texture requirement when: used according to 7. shall point at the surface from outside the material of the workpiece either to the outline (representing the surface) or the extension of it (see figure 17 and 18). Verification of whether a particular surface is in conformance or non-conformance with a given surface texture requirement shall be in accordance to the rules and principles given in ISO 14253-1.
Figure 16: Direction of reading of surface texture requirements 7. Furthermore. on the same view where the size and/or location are indicated and toleranced. As a general rule the graphical symbol shall.
as shown in figure 20.© ISO 1997 .1.
.3 On the tolerance frame for geometrical tolerances The surface texture requirement may be placed on top of the tolerance frame for geometrical tolerances (according ISO 1101).1.2 On the dimension line in connection with the dimension of a size feature If there is no risk of misinterpretation.All rights reserved
Figure 17: Surface texture requirements on the contour line that represents the surface
Figure 18: Alternative use of leader lines 7.
Figure 19: Surface texture requirement in connection with the dimension of a feature of size 7. the surface texture requirement may be indicated in connection with the dimensions given. as shown in figure 19.
.5 Cylindrical and prismatic surfaces Cylindrical as well as prismatic surfaces need only be specified once if indicated by a centreline and if each prismatic surface have the same surface texture requirement (see figure 21).1.ISO/CD 1302(E)
© ISO 1997 .2 Simplified drawing indications of surface texture requirements
7. 7. each prismatic surface needs to be indicated separately if different surface textures are required on the individual prismatic surfaces (see figure 22). this surface texture requirement may be placed close to the title block of the drawing. as shown in figures 17 and 21.4 On extension lines The surface texture requirement may be directly placed on extension lines or be connected to it by a leader line terminating in an arrowhead.1 Majority of surfaces having the same surface texture requirement If the same surface texture is required on the majority of the surfaces of a workpiece.2.1.
Figure 21: Surface texture requirements on extension lines of cylindrical features
Figure 22: Surface texture requirements for cylindrical and prismatic surfaces 7.All rights reserved
Figure 20: Surface texture requirement connected to indication of geometrical tolerances 7. However.
2 Use of reference indication in case of minimal drawing space To avoid the necessity of repeating a complicated indication a number of times.
in order to indicate that there exist other surface texture requirements that deviates from the general surface texture requirement.All rights reserved
This general graphical symbol corresponding to this surface texture shall be followed by: a basic symbol in parenthesis without any other indication (see figure 23). near the title block or in the space devoted to general notes (see figure 25). or the special deviating surface texture requirement(s) in parenthesis (see figure 24).2. 7. a simplified reference indication may be used on the surface provided that its meaning is explained near the workpiece in question. or where space is limited.
Figure 23: Simplified indication when a majority of surfaces have the same required surface texture
Figure 24: Simplified indication when a majority of surfaces have the same required surface texture Surface texture requirements that deviates from the general surface texture requirement is indicated directly on the drawing in the same view of the particular surfaces in question (see figure 23 and 24).
Figure 25: Reference indication in case of minimal drawing space
.© ISO 1997 .
in figures 26 to 28.ISO/CD 1302(E)
© ISO 1997 .3
Indication of 2 processes
If it is necessary to define surface texture both before and after treatment. 2 or 3 may be used on the appropriate surface and its meaning given on the drawing as shown.
Figure 26: Simplified indication of surface texture requirements (manufacturing process not specified)
Figure 27: Simplified indication of surface texture requirement (removal of material)
Figure 28: Simplified indication of surface texture requirement (removal of material not permitted)
Figure 29: Indication of surface texture requirement before and after treatment (in this case coating)
. the corresponding graphical symbol shown i figures 1. this shall be explained in a note or in accordance with figure 29.All rights reserved
7.3 Special use of reference indication If the same surface texture is required on a large number of surfaces of the workpiece.2.
3 shall be equal to h.2 Proportions
The basic graphical symbol and its complements (see 4) shall be drawn in accordance with figures A.© ISO 1997 .
A.All rights reserved Annex A
Proportions and dimensions of graphical symbols A. Only the positions "a" and "b" shall be used for indication of surface texture parameters. filter window and numerical parameter value.2 NOTE . The height of all lettering in areas "a". geometrical tolerances.2 g) is the same as that of the corresponding capital letter in ISO 3098-1 (lettering B. see figures 7 to 15. "b". vertical).3).1
Figure A. The length of the horizontal stroke of the symbol in figure A. The shape of the symbols in figure A.3 shall be avoided on new technical drawings and be regarded as former practice.Use of the positions "x1" and "x2" of figure A. "d" and "e" of figure A. etc.2 c) to A. For dimensions.1 General requirements
In order to harmonize the size of the symbols specified in the International Standard with those of other inscriptions on technical drawings (dimensions.3.
Figure A. Important .) the rules given in ISO 34612 shall be applied.
.3 and B.1 b) depends on the indication associated with it (see 6.3.1 to A.For the placing of surface texture specifications in positions "a" to "e". see A.
25 Line width for lettering.All rights reserved
c x1 x2 e d a b
Figure A.1 Dimensions in millimetres
Height of numerals and letters. may comprise capital and/or lower-case letters.1. d Height. d' 0.5 0.3.3 As the lettering in area c. h (see ISO 3098-1) Line width for symbols.5 5 7 10 14 20
. the height of this area may be greater than h to allow for tails of lower case-case letters
A. figure A.5 3. H1 Height. H2 3.4 2 2.7 1 1.35 0.3 Dimensions
The dimensions of the graphical symbols and additional indications shall be as specified in table A.ISO/CD 1302(E)
© ISO 1997 .5 8 5 11 7 15 10 21 14 30 20 42 28 60 0. Tabel A.
.1. A surface from which removal of material is prohibited.
B.1 Symbol Meaning Fundamental graphical symbol. Basic graphical symbol.1.2
B. It may only be used in isolation when its meaning is "the surface under consideration" or explained by a note (see 7. This basic graphical symbol may also be used in a drawing relating to a manufacturing process to indicate that a surface is to be left in the state resulting from a preceding manufacturing process. regardless whether this state was achieved by removal of material or otherwise. B.2).1 Graphical symbols with no inscription
Reference no.All rights reserved Annex B
Synoptic tables B. Basic graphical symbol. A machining surface with no indication of other details.© ISO 1997 . Used in isolation this basic graphical symbol may be used only when its meaning is "a surface to be machined".
default filter window. filter windows/sampling lengths and parameter values and choice of symbols are given as examples only.0025 Fm) according to ISO 3274. upper limit: arithmetic mean deviation 3. evaluation length of 5 sampling lengths (default).ISO/CD 1302(E)
© ISO 1997 .2 Fm.2.1 Symbol Meaning/Explanation The process is not permitted to remove material. evaluation length of 3 sampling lengths.2. default filter window.8 Fm.2. unilateral upper specification limit. filter window 0.2 Graphical symbols with indication of surface texture
Reference no. R-profile. Wprofile.6
B. lower limit: arithmetic mean deviation 0.8 .4 Fm. filter window 0.2
B. filter window: sampling length 0. filter window 8s = 0. maximum height of waviness 12 Fm.25 mm. arithmetic mean deviation 3. R-profile. evaluation length equal workpiece length (default). "16%-rule" (default) The process shall remove material.008 mm no long wave filter. unilateral upper specification limit.4 Fm.5
B. "max-rule" The process shall remove material. evaluation length of 5 sampling lengths (default).008-0. total profile height 25 Fm. "max-rule"
B. P-profile. unilateral upper specification limit. R-profile. "max-rule".Surface texture parameters.
. "16%-rule" (default) The process shall remove material. evaluation length of 3 sampling lengths (default).7
NOTE . default filter window for both limits.2.2. evaluation length of 5 sampling lengths (default).2 Fm. arithmetic mean deviation 0. R-profile. Rprofile. "16%-rule" (default) The process shall remove material. unilateral upper specification limit. evaluation length of 5 sampling lengths (default). evaluation length of 5 sampling lengths (default).2 Fm.4
B. maximum height of roughness 0. unilateral upper specification limit.All rights reserved
B. "16%-rule" (default) The process is not permitted to remove material.2. maximum height of roughness 0. B. "16%-rule" (default) The process shall remove material. unilateral upper specification limit.2.8 mm (8s default 0. double-sided upper and lower specification limits.8 mm.
surface pattern.7)
B.© ISO 1997 .6) Surface texture requirement applies to complete closed outline of the projection view (see 4.1 Symbol Meaning The meaning is defined by text added to the drawing (see 7.5)
B.The manufacturing method. and machining allowance are given as examples only.
B.4. B.3.3.3.4.1 and 7.1 Symbol Meaning Manufacturing method: milled (see 5.2) Reference no.2).3.3
B.3 Symbols with supplementary information
(These indications may be used in combination with the appropriate graphical symbols from B.4 Simplified symbols
Reference no.All rights reserved B.2.2.4
NOTE .5) Machining allowance 3 mm (see 5. B.2
Surface pattern: direction of lay perpendicular to the plane of projection of the view (see 5.
surface lay approximately perpendicular on the projection plane.default filter window (determined by ISO 4288 and ISO 3274). . filter window default (ISO 4288/3274). .The surface requirement are valid for all surfaces represented by the closed outline
. no requirement.one single.bilateral specification .5 mm).4 Ra = 1. max. grinding
Surface roughness: .surface lay. .both "16%-rule". unilateral/upper specification limits C. evaluation length default (5 × 8c). .evaluation length default (5 × 4 mm = 20 mm).both filter window 0. . "16%-rule".3 Fm.surface lay. . default. Rzmax = 6.manufacturing process shall remove material The surface with a different requirement. . .lower specification limit Ra = 6. . .All rights reserved Annex C
Reference no.Rz = 6. milling Surface roughness on all surfaces except one: .3 Fm. evaluation length default (5 × 2. C.ISO/CD 1302(E)
© ISO 1997 .manufacturing process. has a surface roughness: . . . . Example
C. .5 mm (ISO 3274).8 Fm. . default. unilateral/upper specification limit.two.one single. .1 Requirement Surface roughness: .3 Surface roughness: . . default.one single.default filter window (determined by ISO 4288 and ISO 3274). . unilateral/upper specification limit.filter window default (ISO 4288 and ISO 3274).default evaluation length (5 × 8c)."16%-rule". no requirement. filter window -2. . no requirement.Ra = 0.surface treatment: nickel/chromium plating."16%-rule" default.upper specification limit Ra = 50 Fm.3 Fm. .manufacturing process shall remove material C. unilateral/upper specification limit .6 Fm.Rz = 1 Fm.surface lay approximately circular around the centre . .surface lay.008-4 mm.rule. . . Manufacturing process.default evaluation length (5 × 8c)."16%-rule".evaluation length default (5 × 8c).
default (5 × 8c).surface lay. Surface roughness on side surfaces of keyway .Ra = 25 Fm .6 Fm. .© ISO 1997 . Rz = 50 Fm. "16%-rule". unilateral upper specification limit. unilateral/upper specification limit.evaluation length."16%-rule".8 mm (8s according to ISO 3274). or separated on the respective projection line and dimension line
the three surface roughness requirements on the example are all: . .7
Surface texture and dimensioning may be indicated together on an extended dimension line. default (ISO 4288 and IS 3274). . both: evaluation length 5 × 2.evaluation length. Ra = 6.one unilateral upper and one bilateral specification.5 mm (8s according to ISO 3274). . no requirement. C. . default (5 × 8c).manufacturing process shall remove material Surface roughness on the chamfer: .3 Fm. . . no requirement. default (ISO 4288 and ISO 3274). both: filter window -2.5 mm. bilateral: upper specification limit Rz = 16 Fm.6 unilateral Ra = 1.manufacturing process shall remove material
C.5 = 12.surface lay.3 Fm. default (5 × 8c). surface lay."16%-rule".one single.5 Requirement Surface roughness: . . .evaluation length.surface lay.one single. . lower specification limit Rz = 6. . evaluation length 5 × 0. . unilateral/upper specification limit. surface treatment: nickel/chromium plating. .8 = 4 mm.All rights reserved
Reference no. .Ra = 6.respectively: Ra = 1.6 Fm.manufacturing process shall remove material
."16%-rule".one single. default (ISO 4288 and ISO 3274). no requirement. filter window -0.3 Fm.
ISO/CD 1302(E) Example
Indication of surface texture and dimensioning may be combined using the same dimension line. C. no requirement.
unilateral/upper specification limit. default (5 × 8c). default (5 × 8c). . .Rz = 6."16%-rule".manufacturing process shall remove material.evaluation length. .chromium plating 3. stage: . unilateral/upper specification limit.6 Fm.one single.2 Fm.Rz = 1. only valid for the first 50 mm of the cylinder surface. . . C. . . dimensioning and treatment. default (ISO 4288 and ISO 3274).one single.surface lay.evaluation length.8 Requirement
© ISO 1997 . no requirement.surface lay. stage: No surface texture requirement.All rights reserved
Indication of surface texture. no requirement. .manufacturing process grinding
. . default (ISO 4288 and ISO 3274). stage: . 2. .ISO/CD 1302(E) Reference no."16%-rule". The example is illustrating three successive manufacturing processes or stages 1. except: .
but an indication of filter name as proposed here is unambiguous. In the future other filter types may be standardized. The elements are the following (see also figure D. Filter window is indicated as short wave . This is not standardized.All rights reserved Annex D
Necessary indications in order to ensure unambiguous control of surface functions
A surface texture requirement is built of several different control elements. The standardized filter is the Gauss filter (ISO 11562).2. W or P) .see 5.1: Control elements in indication of surface texture requirements on engineering drawings a) b) Indication of upper (U) or lower (L) specification limit .2 for details
. Filter type may be indicated as "Gauss" or "2RC".see 5.3 for details Profile (R.see 5.see 5.2.© ISO 1997 .2.long wave filter . The former standardized filter was the 2RC-filter. which can be part of the indication on the drawing or the specification given in other documents.1 for details Characteristic/parameter . In the transition period it may be convenient for some companies to indicate the filter type on drawings.1 for details Evaluation length as the number of sampling lengths .see 5.4 for details Filter type "X".1):
It is only in very few cases that some of the elements can be omitted in an unambiguous requirement. f). Two main groups of surface texture parameters exist for use for two main types of surfaces: Single process surfaces Surfaces which are the result of one manufacturing process (e. In cases where no default definitions exist. Two process surfaces Surfaces which are the result of two manufacturing processes.5 for details Experience is that all these elements are necessary to form an unambiguous relation between the surface texture requirement and the function of the surface.8 have a partly unambiguous meaning. The parameters for these surfaces are defined in ISO 13565-2 and ISO 13565-3. plating.use only a simplified indication on the drawing.4 for details Surface texture lay . The individual standards comprise information about default definitions . Parameters useful for these surfaces are defined in ISO 4287 and ISO 12085. In some cases the parameters in ISO 13565-2 may be useful for single process surfaces. a number of default conditions are defined: e. e.
.g. turning.3 for details Limit value in micrometers Type of manufacturing process . When a default definition exist for a surface texture parameter. c. In some cases it is necessary to indicate requirements for more than one surface texture parameter (profile and/or characteristic) to establish an unambiguous relation between the requirement on the drawing and the function of the surface. which are partially lapped.3 and 4. superfinished or honed).g. painting.see 5. shall be given in the indication of the surface texture requirement on the drawing to make the requirement unambiguous .if any. filter window and evaluation length. interpretation of specification limit(s).6 for details
m) Manufacturing process . filter window and evaluation length.see 5.see 4.g. shall be taken from literature or known by experience. two possibilities exist for the indication: 1) Use the total (existing) default definitions (as given in the standards) . ground surfaces. The rest is necessary to evaluate unambiguously the result of measurement and comparison with the limit(s) required.2.All rights reserved
Interpretation of the specification limit ("16%-rule" or "max-rule") .
How strong the correlation between the surface texture parameter and the function of the surface is. Ra 1. and where part of the two surface textures are present in and influencing the function of the resulting surface (e. the full informations about e. that even simplified surface texture indications. The default definitions result in. etc.). and which parameters are the appropriate for the control of a special function of a surface. e. 4. Parameters intended for single process surfaces will usually not give meaningful results used on two process surfaces. grinding. milling. and still maintain the unambiguity of the relation between indication on the drawing and the function of the surface. This principle about default definitions is not yet finalized for all parameters.g.see 5. The majority of the elements are also necessary to set the measuring instrument (b. Some parameters are highly specialized in relation to the type of surface and/or type of function of the surface.6 and Rz 6.g. To simplify the indication of surface texture requirements. Interpretation of the specification limit(s).and meaningful. Not all surface texture parameters have a strong and universal correlation with the function of a surface.ISO/CD 1302(E) g) h) i) k)
© ISO 1997 . d.2.
2) Indicate all the possible requirements and details in the requirement on the drawing. that the filter window . The rules for choosing the default filter window may have major influence on the measured parameter value from a surface.because of the rules in ISO 4288 . The detailed requirement chosen on the basis of objective known relations between the surface texture requirement and the function of the surface. Special attention shall be given to the choice of default filter window as given in ISO 4288. Small . Two different manufacturing processes usually have "surface texture scales" of there own to relate to the same function of the surface. This fact point to. when the surfaces are manufactured with two different processes. As a general rule it is stated that: Surfaces which are important for the function of a workpiece. when the individual values have the same basis. In such cases the default filter should never be used.e. i. filter window. Possibility number 1 have the advantage of reducing the annotations necessary and is saving space on the drawing. To obtain the same function of a surface. On the other hand does not ensure that the choices made by the standardized default definitions are suitable for the specific task of controlling the function of the surface.changes in the surface may .© ISO 1997 . evaluation length and manufacturing process.g. where the surface texture is of critical for the function.
.or at least the sampling length should always be stated in the symbol on the drawing. for surfaces where the surface texture are of importance for the function of the workpiece. usually there may be a difference of more than 100% in the measured parameter values for the two surfaces. possibility number 2 shall always be used. The manufacturing process and in some cases also the surface lay are of major importance for an unambiguous relation between the surface texture requirement on the drawing and the function of the surface. One consequence of the above mentioned facts is.result in differences in the measured parameter value of up to 50%.and nearly insignificant . e. that the comparison of two or more surface texture parameter values only make sense.
(waviness) and P-profile) additional to the already existing Rprofile or roughness profile. Ry and Rz). ISO 13565-3 (see 2). Three new groups/types of surface texture parameters is defined and standardized (ISO 12085.2. ISO 11562. ISO 13565-2. ISO 2632-3 and ISO 4287/2. ISO 4287. ISO/WD 5436-2 and ISO/CD 12179).g. Skidded instruments are no longer standardized. ISO 13565-2 and ISO 13565-3). ISO 2632-2. ISO 13565-1. New filters are defined with a different filter characteristic (ISO 11562. which have a default definition for interpretation of specification limit(s). Ra and Rz is not used any more. ISO 4287 and ISO 11562. digital phase correct Gaussian filter). Each of now three surface texture profiles can be the basis of nearly all surface texture parameters (characteristics). The "true" value of a surface texture parameter is defined by an absolute measuring instrument. ISO 1879. The parameter symbol is now written on the line. e. The most important changes and consequences are: The measuring instrument for surface texture is redefined (ISO 3274). ISO 4288. See especially 5. Almost all surface texture denominations and names of existing parameters are changed (ISO 4287). are heavily increased from the existing three (Ra. Ra. e. ISO 1878. filtering and evaluation length. ISO 12085 and ISO 13565-1.ISO/CD 1302(E)
.g. ISO 2632-1. Surface texture (all three profiles) is now defined by a filter window (short wave and long wave filter) and not only by a single "cut-off filter" (long wave filter) . e. Nearly all W. ISO 12085. A number of surface texture standards are withdrawn: ISO 468. Companies shall make decisions how to make the shift from old to new standards.see 5. The former analogue 2RC filter is no longer standardized. Ra and Rz. The former surface roughness parameter Rz (Ten point height) is not standardized in ISO any more.
The changes from the former standards to the new editions of 1996 and 1997 are so many and so important.All rights reserved Annex E
Exhaustive explanation on consequences of the new ISO surface texture standards
This edition of ISO 1302 is developed for use together with the new editions of the surface texture standards issued in 1996 and 1997.and P-parameters have no default definitions. Wa and Pa.1. Rz is now the symbol for the former Ry. These new surface texture parameters have partly their own filtering system (ISO 12085 and ISO 13565-1). A special standard for surface imperfections is ISO 8785.g. The new editions of surface texture standards are ISO 3274. Two new surface texture profiles are defined (W. See ISO 4288. Three new standards which are not yet issued are listed in Annex G (ISO/CD 5436-1. The use of subscript. The new 1996 and 1997 editions of surface texture standards have resulted in many and major changes compared with the content of the former standards issued in the 1980s. that it is problematic to evaluate "old" surface requirements according to the new standards. ISO 1880. The number of parameters. ISO 4287 and 13565-3. The typography of surface texture parameters are changed.3 and ISO 3274.
Cases exist.All rights reserved
One of the most important changes is the Gaussian filter instead of the 2RC-filter. the dependency of the tip radius and the difference between instruments of different make is heavily reduced. The new filter is intended to have an effect very near to the former 2RC. The advantage of the filter window is. In most cases the use of filter window (instead of cut-off filter only) result in a small reduction of the measured value. that the uncertainty of measurement. This is not fully possible.
. The Gaussian filter have been available on instruments for several years. where the Gaussian filter reduce the measured value more than 50% compared with the value from the same surface measured with 2RC-filtering.© ISO 1997 . In most cases the change of filters result in changes of measured values much smaller (differences less than 5-10%). especially for smooth surfaces.
waviness profile and primary profile in the general GPS matrix.1.1.1
F.All rights reserved Annex F
Relation to the GPS matrix model
For full details about the GPS matrix model see ISO/TR 14638. which influences the chain link 1 of the chain of standards on roughness profile.3
The related standards are those of the chains of standards indicated in figure F. GLOBAL GPS STANDARDS GENERAL GPS MATRIX
Chain link number Size Distance Radius Angle Form of line independent of datum Form of line dependent of datum Form of surface independent of datum Form of surface dependent of datum Orientation Location Circular run-out Total run-out Datums Roughness profile Waviness profile Primary profile Surface imperfections Edges 1 2 3 4 5 6
Position in the GPS matrix model
This International standard is a general GPS standard.ISO/CD 1302(E)
© ISO 1997 .1
Information about the standard and its use
[TO BE FINALIZED]
F. as graphically illustrated on figure F.
Part 2: Soft gauges1 [5] ISO/CD 12179.Calibration of contact (stylus) instruments1
.Surface texture: Profile method Calibration . Technical drawings . Geometrical Product Specifications (GPS) .Lettering .Surface texture: Profile method Calibration .Profile method . Geometrical Product Specifications (GPS) .All rights reserved Annex G
[1] ISO/TR 14638:1995.© ISO 1997 . Geometrical Product Specifications (GPS) .Part 1: Measurement standards6 [4] ISO/WD 5436-2:-. Geometrical Product Specifications (GPS) .Surface texture .part 1: Currently used characters [3] ISO/CD 5436-1:-.Masterplan [2] ISO 3098-1:1974.
AboutBrowse booksSite directoryAbout ScribdMeet the teamOur blogJoin our team!Contact UsPartnersPublishersDevelopers / APILegalTermsPrivacyCopyrightSupportHelpFAQAccessibilityPressPurchase helpAdChoicesMembershipsJoin todayInvite FriendsGiftsCopyright © 2016 Scribd Inc. .Terms of service.Accessibility.Privacy.Mobile Site.Site Language: English中文EspañolالعربيةPortuguês日本語DeutschFrançaisTurkceРусский языкTiếng việtJęzyk polskiBahasa indonesia213N159 by ilyaskureshi14 viewsEmbedRelated interestsInternational Organization For Standardization, Surface, Texture Mapping, Parameter (Computer Programming)DownloadDescriptionsfsdfsfsfsdfsfRead on Scribd mobile: iPhone, iPad and Android.Copyright: Attribution Non-Commercial (BY-NC)List price: $0.00Download as PDF, TXT or read online from ScribdFlag for inappropriate contentShow moreShow less
Documents similar to 213N159The Measurement of Surface texture by NPL Labby N.PalaniappanInternanional Standardsby pktienIso by Ghazalby orkide_ghazalBooks similar to 213N159Nine Steps to Success: An ISO27001:2013 Implementation Overview, Third editionby Alan CalderDover Books on Mathematicsby D. E. LittlewoodStudies in Interface Scienceby Tian HaoBooks about Parameter (Computer Programming)Materials Data for Cyclic Loading: Low-Alloy Steelsby Chr BollerStochastic Equations through the Eye of the Physicist: Basic Concepts, Exact Results and Asymptotic Approximationsby Valerii? Isaakovich Kli?a?t?s?kinElectrical Circuits with Variable Parameters: Including Pulsed-Control Systemsby V. A. Taft