ISO INTERNATIONAL 6752 STANDARD Second edition 2008-06-15 Tools for pressing Round punches with 60 degrees conical head and straight shank OutillagedepressePoingonsateteconiquea6odegrésetcorps cylindrique Referencenumber ISO 6752:2008(E) @ISO 2008 ISO6752:2008(E) 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 non-governmental, in liaison with IsO, also take part in the work. IsoO collaborates closely y with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2. The main task of technical committees is to prepare International Standards. 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO6752was preparedbyTechnical CommitteeISO/TC29,Small tools,SubcommitteeSC8,Tools for pressing and moulding. Thissecondeditioncancelsandreplacesthefirstedition(isO6752:1984),whichhasbeentechnicallyrevised @ ISO 2008 - All rights reserved ili INTERNATIONALSTANDARD ISO6752:2008(E) Tools for pressing Round punches with 6o degrees conical head and straight shank Scope 1 This International Standard specifies the basic dimensions, in millimetres, of round punches with 6o°conical head and straight shank in the diameter range of 0,5 mm to 20 mm. It gives example material and hardness values, and specifies the designation of the punches,whose main use is punching holes in steel sheets but that can also be used on other materials. 2 Normative references references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)applies. Iso2768-1:1989,General tolerances —Part1:Tolerances for linear and angular dimensions without individual tolerance indications Dimensions The dimensions of round punches with 6o°conical head and straight shank shall conform to the indications of Figure 1 and Table 1. Generaltolerance:ISO2768-m Surface roughness values in micrometres 0.5 D 7 Figure1—Roundpuncheswith6o°conicalheadandstraightshank @ ISO 2008 - All rights reserved ISO6752:2008(E) Table1 Dimensions of round punches with 60°conical head and straight shank D D2 H L r +0,2 h6 71 80 100 0,50 0,9 x x 0,55 1,0 x x 0,60 1,1 x x x 0,2 0,65 1,2 x x 0,70 1,3 x x 0,75 1,3 0,80 1,4 x 0,85 1,4 x x 0,4 0,90 1,6 x x 0,95 1,6 x x x 1,0 1,8 x x 1,1 1,8 x x 1,2 2,0 x x 1,3 2,0 x x 1,4 2,2 X X 1,5 2,2 x + 1,6 2,5 x x 1,7 2,5 x 1,8 2,8 x x x 1,9 2,8 x x x 0,5 2,0 3,0 x x 2,1 3,2 x x 2,2 3,2 x x 2,3 3,5 x 2,4 3,5 x x x 2,5 3,5 x x x 2.6 4,0 x x x 2,7 4,0 x x 2,8 4,0 x 2,9 4,0 x x 2 @ ISO 2008 All rights reserved ISO6752:2008(E) Table 1 (continued) H L D1 D2 r h6 71 80 100 3,0 4,5 × 3,1 4,5 x x x 3,2 4,5 x x 3,3 4,5 x x 3,4 4,5 x x 3,5 5,0 x 3,6 5,0 3,7 5,0 x x 3,8 5,0 x x 3,9 5,0 x x 4,0 5,5 x x x 4,1 5,5 x x x 4,2 5,5 x x 4,3 5,5 x 4,4 5,5 x x 4,5 6,0 0,5 0,6 *g.4 × × 4,6 6,0 x 4,7 6,0 x x 4,8 6,0 x 4,9 6,0 5,0 6,5 x x 5,1 6,5 5,2 6,5 × 5,3 6,5 x x 5,4 6,5 x x 5,5 7,0 x x x 5,6 7,0 x x 5,7 7,0 x x x 5,8 7,0 x x 5,9 7,0 6,0 8,0 x x @ ISO 2008 All rights reserved 3 ISO6752:2008(E) Table 1 (continued) D1 D2 H r L +0,2 h6 71 80 100 6,1 8,0 x x 6,2 8,0 x x 0,5 6,3 8,0 x x x 6,4 8,0 x x x 6,5 9,0 x x 7,0 9,0 7,5 10,0 x 8,0 10,0 x x 8,5 11,0 x 9.0 11,0 x x x 9,5 12,0 x x 10,0 12,0 x x 10,5 13,0 x 11,0 13,0 x 11,5 14,0 X X x 12,0 14,0 x 12,5 15,0 x x 13,0 15,0 x 13,5 16,0 x x 14,0 16,0 x x x 14,5 17,0 x 15 17,0 x x 15,5 18,0 x x 1,5 16,