GB1251843A - - Google Patents
Info
- Publication number
- GB1251843A GB1251843A GB1251843DA GB1251843A GB 1251843 A GB1251843 A GB 1251843A GB 1251843D A GB1251843D A GB 1251843DA GB 1251843 A GB1251843 A GB 1251843A
- Authority
- GB
- United Kingdom
- Prior art keywords
- punch
- nose
- stripper
- spring
- die
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
- B21D45/006—Stripping-off devices
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
1,251,843. Punches; strippers. REDMAN ENG. Ltd. 31 Jan., 1969 [3 Feb., 1968], No. 5565/68. Heading B3W. A piercing punch assembly comprises a punch 10 having a body 12 and a nose 14, a stripper body 18, resilient means such as the spring 27 acting between the punch body and the stripper body to retract the punch and a stripper nose 21 releasably mounted on the stripper body, the dimensions of the bodies and noses being such that when the punch is in its retracted position the punch nose does not project from the stripper nose whereas when the stripper nose is removed the punch nose does project from the stripper body. The nose 21 if metal may carry a spring ring 25 which engages in groove 26 in the body 18 or may be screwed into the body. If the nose 21 is of polyurethane or other resilient plastics material a bead or groove moulded on the nose is engageable with a groove or bead on the body 18. A manually compressible spring 20 raises the punch and stripper assembly after the spring 27 has retracted the punch relatively to the stripper. When the stripper nose has been removed the spring 20 can be compressed by pushing down the punch head 11 manually so that the punch nose enters the die 33 or a setting sleeve within or substituted for the die for accurate alignment of the punch and die. A locking screw 32 is provided in an upper part 15 of the punch frame for retaining the punch in this extended position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB556568 | 1968-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251843A true GB1251843A (en) | 1971-11-03 |
Family
ID=9798516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251843D Expired GB1251843A (en) | 1968-02-03 | 1968-02-03 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1251843A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0000762A1 (en) * | 1977-08-10 | 1979-02-21 | Houdaille Industries, Inc. | A punch stripper assembly and method of making same |
| US4248111A (en) * | 1979-07-16 | 1981-02-03 | Wilson Tool Company | Punch guide assembly |
| US4261237A (en) | 1979-03-16 | 1981-04-14 | Houdaille Industries, Inc. | Rigidly supported molded plastics material punch guide and stripper |
| EP0541959A2 (en) * | 1991-10-11 | 1993-05-19 | Murata Machinery Ltd. | Punch holder with stripper arrangement |
| US5301580A (en) * | 1992-10-07 | 1994-04-12 | Wilson Tool International, Inc. | Locking ring stripper plate assembly |
| EP0815979A2 (en) * | 1996-07-03 | 1998-01-07 | Amada Metrecs Company, Limited | Method of punching a punch guide hole in a blank holder of a punch assembly, a punch assembly and a blank holder |
| US6311594B1 (en) * | 1996-07-03 | 2001-11-06 | Amada Company, Limited | Punch guiding apparatus and stripper plate used therefor |
| US6895849B2 (en) | 2002-06-07 | 2005-05-24 | Wilson Tool International, Inc. | Stripper plate retention system |
-
1968
- 1968-02-03 GB GB1251843D patent/GB1251843A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0000762A1 (en) * | 1977-08-10 | 1979-02-21 | Houdaille Industries, Inc. | A punch stripper assembly and method of making same |
| US4261237A (en) | 1979-03-16 | 1981-04-14 | Houdaille Industries, Inc. | Rigidly supported molded plastics material punch guide and stripper |
| US4248111A (en) * | 1979-07-16 | 1981-02-03 | Wilson Tool Company | Punch guide assembly |
| EP0541959A2 (en) * | 1991-10-11 | 1993-05-19 | Murata Machinery Ltd. | Punch holder with stripper arrangement |
| EP0541959A3 (en) * | 1991-10-11 | 1993-08-04 | Murata Machinery Ltd. | Punch holder with stripper arrangement |
| US5301580A (en) * | 1992-10-07 | 1994-04-12 | Wilson Tool International, Inc. | Locking ring stripper plate assembly |
| EP0815979A2 (en) * | 1996-07-03 | 1998-01-07 | Amada Metrecs Company, Limited | Method of punching a punch guide hole in a blank holder of a punch assembly, a punch assembly and a blank holder |
| EP0815979A3 (en) * | 1996-07-03 | 2001-05-30 | Amada Company, Limited | Method of punching a punch guide hole in a blank holder of a punch assembly, a punch assembly and a blank holder |
| US6311594B1 (en) * | 1996-07-03 | 2001-11-06 | Amada Company, Limited | Punch guiding apparatus and stripper plate used therefor |
| US6895849B2 (en) | 2002-06-07 | 2005-05-24 | Wilson Tool International, Inc. | Stripper plate retention system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |