GB1524315A - Cutting holes in sheet material - Google Patents

Cutting holes in sheet material

Info

Publication number
GB1524315A
GB1524315A GB920476A GB920476A GB1524315A GB 1524315 A GB1524315 A GB 1524315A GB 920476 A GB920476 A GB 920476A GB 920476 A GB920476 A GB 920476A GB 1524315 A GB1524315 A GB 1524315A
Authority
GB
United Kingdom
Prior art keywords
punch
cutting
die
sides
sheet material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB920476A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRENT COMPONENTS Ltd
Original Assignee
BRENT COMPONENTS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BRENT COMPONENTS Ltd filed Critical BRENT COMPONENTS Ltd
Priority to GB920476A priority Critical patent/GB1524315A/en
Publication of GB1524315A publication Critical patent/GB1524315A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B21D28/343—Draw punches

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)

Abstract

1524315 Punching tool BRENT COMPONENTS Ltd 24 Feb 1977 [8 March 1976] 09204/76 Heading B4B [Also in Division B3] A punch assembly for cutting polygonal holes in sheet metal or plastics comprise a threaded bolt 1 carrying a punch 3, a die 9 and a drive nut 14 for drawing the punch through the die, the cutting face of the punch having two or more, but always less than the number of edges the hole is to have cutting points 7 arranged symmetrically and projecting from the cutting face in the punching direction. The cutting points are at alternate corners, which may be bevelled or rounded, of a punch having an even number of sides. A punch with an odd number of sides has at least one cutting point intermediate corners.
GB920476A 1977-02-24 1977-02-24 Cutting holes in sheet material Expired GB1524315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB920476A GB1524315A (en) 1977-02-24 1977-02-24 Cutting holes in sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB920476A GB1524315A (en) 1977-02-24 1977-02-24 Cutting holes in sheet material

Publications (1)

Publication Number Publication Date
GB1524315A true GB1524315A (en) 1978-09-13

Family

ID=9867422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB920476A Expired GB1524315A (en) 1977-02-24 1977-02-24 Cutting holes in sheet material

Country Status (1)

Country Link
GB (1) GB1524315A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157997A (en) * 1984-05-04 1985-11-06 Barbara Ann Fowles Cutter device
US7909902B2 (en) 2008-06-12 2011-03-22 International Business Machines Corporation Modified hexagonal perforated pattern
WO2011148393A1 (en) * 2010-05-28 2011-12-01 Prabakar K N A draw punch and method of making different shaped cutouts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157997A (en) * 1984-05-04 1985-11-06 Barbara Ann Fowles Cutter device
US7909902B2 (en) 2008-06-12 2011-03-22 International Business Machines Corporation Modified hexagonal perforated pattern
WO2011148393A1 (en) * 2010-05-28 2011-12-01 Prabakar K N A draw punch and method of making different shaped cutouts

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19970223