1、December 2015 English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.100.10!%Jy“2399686www.din.deD
2、IN ISO 3547-7Plain bearings Wrapped bushes Part 7: Measurement of wall thickness of thin-walled bushes (ISO 3547-7:2007),English translation of DIN ISO 3547-7:2015-12Gleitlager Gerollte Buchsen Teil 7: Messung der Wanddicke von dnnwandigen Lagerbuchsen (ISO 3547-7:2007),Englische bersetzung von DIN
3、ISO 3547-7:2015-12Paliers lisses Bagues roules Partie 7: Mesurage de lpaisseur de paroi des bagues minces (ISO 3547-7:2007),Traduction anglaise de DIN ISO 3547-7:2015-12SupersedesDIN ISO 12306:1998-11, withdrawn 2011-06www.beuth.deDocument comprises 10 pagesDTranslation by DIN-Sprachendienst.In case
4、 of doubt, the German-language original shall be considered authoritative.01.16A comma is used as the decimal marker. Contents DIN ISO 3547-7:2015-12 2Page National foreword .3 National Annex NA (informative) Bibliography 4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Symbols and
5、units .6 5 Purpose of checking .6 6 Checking methods .6 6.1 Measuring principle .6 6.2 Line measurement around the circumference 7 6.3 Point measurement8 7 Requirements for measuring equipment for the contact method 9 7.1 Radius of the measuring pin on the outside surface .9 7.2 Radius of the measur
6、ing pin on the inside surface .9 7.3 Measuring pin load 9 8 Checking of measuring equipment 9 Bibliography . 10 National foreword This document (ISO 3547-7:2007) has been prepared by Technical Committee ISO/TC 123 “Plain bearings” (Secretariat: JISC, Japan), Subcommittee SC 5 “Quality analysis and a
7、ssurance . ”The responsible German body involved in its preparation was DIN-Normenausschuss Wlz- und Gleitlager (DIN Standards Committee Rolling Bearings and Plain Bearings), Working Committee NA 118-02-05 AA Qualittssicherung. Attention is drawn to the possibility that some of the elements of this
8、document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3547-1 DIN ISO 3547-1 ISO 3547-2 DIN ISO 3547-2 ISO 4379 DIN
9、ISO 4379 DIN ISO 3547 consists of the following parts, under the general title Plain bearings Wrapped bushes: Part 1: Dimensions Part 2: Test data for external and internal diameters Part 3: Lubrication holes, grooves and indentations Part 4: Materials Part 5: Checking the outside diameter Part 6: C
10、hecking the inside diameter Part 7: Measurement of wall thickness of thin-walled bushes Amendments This standard differs from DIN ISO 12306:1998-11 as follows: a) the standard has been technically and editorially revised. Previous editions DIN ISO 12306: 1998-11 DIN ISO 3547-7:2015-12 3National Anne
11、x NA (informative) Bibliography DIN ISO 3547-1, Plain bearings Wrapped bushes Part 1: Dimensions DIN ISO 3547-2, Plain bearings Wrapped bushes Part 2: Test data for external and internal diameters DIN ISO 4379, Plain bearings Copper alloy bushes DIN ISO 3547-7:2015-12 4Plain bearings Wrapped bushes
12、1 Scope This part of ISO 3547 describes, following ISO 12301, the checking methods and measuring equipment used for measuring the total wall thickness of thin-walled bushes in the finished state. NOTE All dimensions in this International Standard are given in millimetres. 2 Normative references The
13、following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3547-1, Plain bearings Wrapped bushes Part 1: Dim
14、ensions ISO 4379, Plain bearings Copper alloy bushes 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 wall thickness s3radial distance between the opposing measuring points at the inside and the outside surface diameter See Figure 1. Part 7: M
15、easurement of wall thickness of thin-walled bushes DIN ISO 3547-7:2015-12 5a) Clinched bush b) Split bush Key 1 clinch Figure 1 Wall thickness, s34 Symbols and units For the purposes of this document, the symbols and units given in Table 1 apply. Table 1 Symbols and units Symbol Parameter SI unit ac
16、hDistance to measuring position millimetre B Width of the bush millimetre DoOutside diameter of the bush millimetre FpinMeasuring pin load newton s3Wall thickness millimetre 5 Purpose of checking The purpose of checking is to ensure that the wall thickness and wall thickness tolerances are in accord
17、ance with ISO 3547-1 and ISO 4379. If this measurement is required, it is designated S; see ISO 3547-1. 6 Checking methods 6.1 Measuring principle The gauging axis of the measuring device shall be in the radial direction and at a right angle to the outside surface of the test piece in order to find
18、the minimum value of the wall thickness. The measured values may be recorded by a single measurement or by a sum measurement, as represented symbolically in Figure 2. DIN ISO 3547-7:2015-12 6a) Single measurement by contact (mechanical/electronic gauge) b) Sum measurement by contact/non-contact(elec
19、tronic/pneumatic gauge) Figure 2 Measuring principle of wall thickness measurement The presence of lubricating holes, oil pockets, oil grooves, markings or special chamfers can require deviation from the measuring lines and measuring points specified in 6.2 and 6.3. Any such deviation shall be agree
20、d upon separately. Any wall thickness not conforming to the specified values due to the manufacturing process, because of deformation of the bearing backing in the area of marking or at non-load-bearings places of wrapped bushes, shall be defined separately. 6.2 Line measurement around the circumfer
21、ence Continuous measurement of the wall thickness around the circumference shall be carried out at the measuring lines specified in Figure 3 and Table 2. a) B u 15 b) B 15 Key 1 measuring lines, M 2 chamfer Figure 3 Position of measuring lines DIN ISO 3547-7:2015-12 7Table 2 Distance to measuring po
22、sition, achDimensions in millimetres Distance to measuring positionaB achNumber of measuring lines, M u 15 B/2 1 15 u 50 4 2 50 6 2 aEach measuring line distance, ach, is specified from the beginning of the sliding surface or from the end face by adding the nominal value of the chamfer. 6.3 Point me
23、asurement Point-by-point measurement of wall thickness shall be carried out at the measuring points specified in Figure 4 for widths of B u 90 mm and outside diameter Dou 150 mm. In the case where B 90 mm and Do 150 mm, the measurement method shall be subject to agreement between the supplier and us
24、er. The measuring position distance, ach, shall be taken from Table 2. Dimensions in millimetres Key 1 split position P measuring points Figure 4 Three- or six-point measuring scheme DIN ISO 3547-7:2015-12 87 Requirements for measuring equipment for the contact method 7.1 Radius of the measuring pin
25、 on the outside surface The radius of the measuring pin positioned on the outside shall be 1,5 mm 0,2 mm as shown in Figure 5. Figure 5 Measuring equipment for the contact method 7.2 Radius of the measuring pin on the inside surface The radius of the measuring pin positioned on the inside is given i
26、n Table 3 as a function of the bush outside diameter Doand the bearing material. Table 3 Radius of the measuring pin on the inside surface Dimensions in millimetres DoRadius of the measuring pin nominal Metallic bushes Polymer bushes u 10 1,5 0,2 1,5 0,2 10 u 25 3 0,2 3 0,2 25 u 150 3 0,2 5 0,2 150
27、5 0,2 5 0,2 7.3 Measuring pin load The measuring pin load, Fpin, applied onto the sliding layer, shall be 0,8 N to 2,5 N in accordance with ISO 12301. 8 Checking of measuring equipment The measuring equipment shall be checked for uncertainty of measurement at a frequency specified by the user, based
28、 on the type of equipment and on experience from previous checks. The limits shall comply with the current industry requirements. DIN ISO 3547-7:2015-12 9Bibliography 1 ISO 3547-2, Plain bearings Wrapped bushes Part 2: Test data for outside and inside diameters 2 ISO 12301, Plain bearings Quality control techniques and inspection of geometrical and material quality characteristics DIN ISO 3547-7:2015-12 10
