ISO INTERNATIONAL 8018 STANDARD Second edition 2007-02-01 Tools for moulding Guide bushes, headed, and locating guide bushes headed Outillage de moulageBagues de guidage,a collerette et a collerette avecplotdecentrage Referencenumber ISO 8018:2007(E) ii Foreword 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 technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standardsaredrafted inaccordancewiththe rulesgiveninthe ISO/lECDirectives,Part2 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. rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO8018waspreparedbyTechnical CommitteeISO/TC29,Small tools,SubcommitteeSC8,Tools for pressingand moulding. This second edition cancels and replaces the first edition (IsO 8018:1985), of which it constitutes a minor in a Bibliography, and the indication of surface textures has been updated in accordance with IsO 1302:2002. ii blank Tools for moulding Guide bushes, headed, and locating guide bushes, headed Scope ThisInternational Standard specifiesthedimensions andtolerances,inmillimetres,forheadedguidebushes and headed locating guide bushes intended for use in moulds. 2 Dimensions 2.1Guidebushes,headed—TypeA The dimensions of headed guidebushes of type A shall conform to the indications of Figure 1and Table 1. Surface roughness values in micrometres P *0,01A [A Ra 0,8 ΦD, k6 tHOS '0+ / Ra 0.8 10.01A 0 00.1A S -0.1 +1 0,5 L1 -1,0 NOTE The sketch is an example only. Chamfer and a cylindrical entry over 3 mm. R ≤ 0,1S. Figure1-Guidebushes,headed-TypeA Dimensions of guidebushes,headed-TypeA Table1 Da 12 16 20 25 32 40 50 D1 18 22 28 32 40 50 63 D2 22 26 32 36 45 56 71 s 4 6 6 9 8 8 8 L1 L 16 16 16 16 20 20 20 20 20 25 25 25 25 25 32 32 32 32 32 32 40 32 40 40 40 40 50 32 50 50 50 50 63 63 9 63 63 63 80 63 80 80 80 80 80 100 80 80 100 100 100 125 100 100 100 160 100 100 200 125 125 For use in exceptional cases, for instance, to prevent incorrect assembly of the upper and lower plates of the mould in relation to 2 2.2Locatingguide bushes, headed—TypeB The dimensions of headed locating guide bushes of type B shall conform to the indications of Figure 2 and Table 2. Surface roughness values inmicrometres =0.01A 0.01A A Ra 0.8 /Ra 0.8 tH OS /Ra 0.8 00.1A 0.01A 0 S -0,1 -0.5 L 2 -1,5 -0.5 L 1 -1 NOTE The sketch is an example only. a Chamfer and a cylindrical entry over 3mm. R ≤ 0,1S. Figure2Locatingguidebushes,headedTypeB 3