JPS57146428A - Piercing method for plate - Google Patents
Piercing method for plateInfo
- Publication number
- JPS57146428A JPS57146428A JP3198081A JP3198081A JPS57146428A JP S57146428 A JPS57146428 A JP S57146428A JP 3198081 A JP3198081 A JP 3198081A JP 3198081 A JP3198081 A JP 3198081A JP S57146428 A JPS57146428 A JP S57146428A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- annular groove
- hole
- forming
- die member
- 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.)
- Pending
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
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
PURPOSE:To make piercing without forming burrs by forming an annular groove on a plate by a die having an annular projection and piercing inside of the annular groove to forming side of the annular groove. CONSTITUTION:An annular projection having nearly the same diameter as the hole to be pierced on a plate B is formed on the upper face of a lower die member 1. The plate (b) is placed on the lower die member 1 and an upper die member 3 is pressed from above to plastic work an annular groove C on the plate B. Next, the plate is placed on a cylindrical die 4 which is nearly the same in inner diameter as the groove C of the plate B, and blanking is made from above by a punch 5. A step 6 is formed on the punch 5 and a face D is generated by pressing upper periphery of the hole E of the plate B. By this way, the generation of burrs on the periphery of the hole E can be prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3198081A JPS57146428A (en) | 1981-03-06 | 1981-03-06 | Piercing method for plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3198081A JPS57146428A (en) | 1981-03-06 | 1981-03-06 | Piercing method for plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57146428A true JPS57146428A (en) | 1982-09-09 |
Family
ID=12346082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3198081A Pending JPS57146428A (en) | 1981-03-06 | 1981-03-06 | Piercing method for plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57146428A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6221574U (en) * | 1985-07-23 | 1987-02-09 | ||
US5816093A (en) * | 1994-09-29 | 1998-10-06 | Nitto Kohki Co., Ltd. | Method and tool for forming a tapered hole in a cylindrical work by punching extruding |
JP2017001096A (en) * | 2015-04-29 | 2017-01-05 | トルンプフ ヴェルクツォイクマシーネン ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトTrumpf Werkzeugmaschinen GmbH + Co. KG | Devices and methods for pressure deforming connecting webs between workpiece parts of plate-like workpiece |
-
1981
- 1981-03-06 JP JP3198081A patent/JPS57146428A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6221574U (en) * | 1985-07-23 | 1987-02-09 | ||
US5816093A (en) * | 1994-09-29 | 1998-10-06 | Nitto Kohki Co., Ltd. | Method and tool for forming a tapered hole in a cylindrical work by punching extruding |
JP2017001096A (en) * | 2015-04-29 | 2017-01-05 | トルンプフ ヴェルクツォイクマシーネン ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトTrumpf Werkzeugmaschinen GmbH + Co. KG | Devices and methods for pressure deforming connecting webs between workpiece parts of plate-like workpiece |
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