GB1524315A - Cutting holes in sheet material - Google Patents
Cutting holes in sheet materialInfo
- 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
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.
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)
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 |
-
1977
- 1977-02-24 GB GB920476A patent/GB1524315A/en not_active Expired
Cited By (3)
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 |