JPS5677028A - Dishing method - Google Patents
Dishing methodInfo
- Publication number
- JPS5677028A JPS5677028A JP15103980A JP15103980A JPS5677028A JP S5677028 A JPS5677028 A JP S5677028A JP 15103980 A JP15103980 A JP 15103980A JP 15103980 A JP15103980 A JP 15103980A JP S5677028 A JPS5677028 A JP S5677028A
- Authority
- JP
- Japan
- Prior art keywords
- work
- hole
- dishing
- recess
- punch
- 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.)
- Granted
Links
Landscapes
- Punching Or Piercing (AREA)
Abstract
PURPOSE: To absorb the metal flow at the dishing and prevent the occurrence of burrs on the back of the work by beforehand forming a predetermined recess to the back of the work to be formed with a dished part having a through-hole.
CONSTITUTION: A recess 16 of a size and shape of absorbing the metal flow at the working is formed on the back of the position of a work 4 where a through-hole 11 is to be pierced, prior to working with a punch 8. Next, a striplike projection 18 fitting to the inside circumferential surface 17 of the recess 16 of the work 4 is formed to a dishing die 2, to prevent the deviation of the work 4 with the dishing die 2 during working. The surface 3 of the die 2 encircled by the projection 18 is formed perpendicularly to a punch lead-in hole 1 and the work recess 16 is closed by the surface 3. Thence, the pierced part 7 of the punch 8 is advanced into the punch lead-in hole 1 at the working, whereby the through-hole 11 is pierced. The dishing part 6 is pressed to the inside surface of the through-hole 11, and the inside surface is formed to a taper surface 10. At this time, the metal flow is perfectly absorbed into the recess 16.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103980A JPS597529B2 (en) | 1980-10-28 | 1980-10-28 | Counter drawing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103980A JPS597529B2 (en) | 1980-10-28 | 1980-10-28 | Counter drawing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5677028A true JPS5677028A (en) | 1981-06-25 |
JPS597529B2 JPS597529B2 (en) | 1984-02-18 |
Family
ID=15509957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15103980A Expired JPS597529B2 (en) | 1980-10-28 | 1980-10-28 | Counter drawing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS597529B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5414680A (en) * | 1991-08-16 | 1995-05-09 | Olympus Optical Co., Ltd. | Apparatus with a compact configuration for supporting an optical pick up device |
WO1996009904A1 (en) * | 1994-09-29 | 1996-04-04 | Nitto Kohki Co., Ltd. | Boring method for forming tapering through hole in work by using press, and boring tool therefor |
KR100233637B1 (en) * | 1995-08-03 | 2000-03-02 | 다카다 모토유키 | Method and tool for forming a tapered hole in a cylindrical work by punching extruding |
JP2010264474A (en) * | 2009-05-14 | 2010-11-25 | Amada Co Ltd | Method of forming countersink and dieing die, and punching die |
-
1980
- 1980-10-28 JP JP15103980A patent/JPS597529B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5414680A (en) * | 1991-08-16 | 1995-05-09 | Olympus Optical Co., Ltd. | Apparatus with a compact configuration for supporting an optical pick up device |
WO1996009904A1 (en) * | 1994-09-29 | 1996-04-04 | Nitto Kohki Co., Ltd. | Boring method for forming tapering through hole in work by using press, and boring tool therefor |
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 |
KR100233637B1 (en) * | 1995-08-03 | 2000-03-02 | 다카다 모토유키 | Method and tool for forming a tapered hole in a cylindrical work by punching extruding |
JP2010264474A (en) * | 2009-05-14 | 2010-11-25 | Amada Co Ltd | Method of forming countersink and dieing die, and punching die |
Also Published As
Publication number | Publication date |
---|---|
JPS597529B2 (en) | 1984-02-18 |
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