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Die for Use with a Multielement Punch

IP.com Disclosure Number: IPCOM000091715D
Original Publication Date: 1968-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Liander, LE: AUTHOR

Abstract

The method is for making a replaceable and highly wear-resistant die for punching closely spaced small holes in sheets of material without punch element tip breakage. A matrix of punch elements 1 is held in position in holes in punch holder 2. Each punch 1 consists of elongated shank 3 which ends in a tapered tip 4. Punches 1 are topped by heads 5. Spring-loaded to holder 2 is stripper plate 6. Backup plate 7 is located parallel at the bottom of plate 6. Bore holes 8 in plate 7 are positioned in locations corresponding to the locations of punches 1. Holes 8 have larger diameter than tips 4 of punches 1. Die 9 is made by punching a soft, wear-resistant material. A sheet material in which holes are to be punched is located in the punch between punches 1 and die 9.

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Die for Use with a Multielement Punch

The method is for making a replaceable and highly wear-resistant die for punching closely spaced small holes in sheets of material without punch element tip breakage. A matrix of punch elements 1 is held in position in holes in punch holder 2. Each punch 1 consists of elongated shank 3 which ends in a tapered tip 4. Punches 1 are topped by heads 5. Spring-loaded to holder 2 is stripper plate 6. Backup plate 7 is located parallel at the bottom of plate 6. Bore holes 8 in plate 7 are positioned in locations corresponding to the locations of punches 1. Holes 8 have larger diameter than tips 4 of punches 1. Die 9 is made by punching a soft, wear-resistant material. A sheet material in which holes are to be punched is located in the punch between punches 1 and die 9. When the punch is operated, the sheet material has the precisely located holes punched in it. A vacuum system arrangement 10 of holding die 9 onto plate 7 also provides suction. Passage 11 is for automatically removing the punched out material.

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