JPS5484861A - Punch for burring method - Google Patents
Punch for burring methodInfo
- Publication number
- JPS5484861A JPS5484861A JP15255977A JP15255977A JPS5484861A JP S5484861 A JPS5484861 A JP S5484861A JP 15255977 A JP15255977 A JP 15255977A JP 15255977 A JP15255977 A JP 15255977A JP S5484861 A JPS5484861 A JP S5484861A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- cut
- metal plate
- piercing
- piercing portion
- 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
Abstract
PURPOSE: A punch which enables to from a cylindrical projection on a method plate with a high productivity by making an opening as a prepared hole without producing slugs by means of the piercing portion of the punch and then forming an bulged section with the tapered portion of the punch.
CONSTITUTION: When a punch 1 is lowerd toward a metal plate placed on a die 6, initially, a straeght edge 3a of the piercing portion thereof forms a straight cut on the metal plate and then the cut is further widened with the piercing portion as the punch lowers. Then, the upper half of the smaller diameter portion of the punch passes through the cut portion with the piercing portion, the tapered section 5 expands the area around the cut downward. Subsequently, in cooperation with the die, the finishing portion 4 finishes the expanded portion in a cylindrical shape. Thereafter, the punch 1 is raised. In this manner, a cylindrical projection 11 is formed on the metal plate 8 with a protruded piece left.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15255977A JPS5484861A (en) | 1977-12-19 | 1977-12-19 | Punch for burring method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15255977A JPS5484861A (en) | 1977-12-19 | 1977-12-19 | Punch for burring method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5484861A true JPS5484861A (en) | 1979-07-06 |
Family
ID=15543114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15255977A Pending JPS5484861A (en) | 1977-12-19 | 1977-12-19 | Punch for burring method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484861A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5725221A (en) * | 1980-07-21 | 1982-02-10 | Ageo Seimitsu Kk | Production of hand for watch |
JPS6096328A (en) * | 1983-10-27 | 1985-05-29 | Sanyo Electric Co Ltd | Working method of burring hole |
JPS60176827U (en) * | 1984-05-07 | 1985-11-22 | 三池工業株式会社 | Burring punch |
JP2008155216A (en) * | 2006-12-20 | 2008-07-10 | Oiles Ind Co Ltd | Punch for punching sheet metal, sheet metal punching device provided with the punch, and method therefor |
JP2009208948A (en) * | 2008-03-06 | 2009-09-17 | Ntn Corp | Take-up unit with frame |
-
1977
- 1977-12-19 JP JP15255977A patent/JPS5484861A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5725221A (en) * | 1980-07-21 | 1982-02-10 | Ageo Seimitsu Kk | Production of hand for watch |
JPS6096328A (en) * | 1983-10-27 | 1985-05-29 | Sanyo Electric Co Ltd | Working method of burring hole |
JPS60176827U (en) * | 1984-05-07 | 1985-11-22 | 三池工業株式会社 | Burring punch |
JP2008155216A (en) * | 2006-12-20 | 2008-07-10 | Oiles Ind Co Ltd | Punch for punching sheet metal, sheet metal punching device provided with the punch, and method therefor |
JP2009208948A (en) * | 2008-03-06 | 2009-09-17 | Ntn Corp | Take-up unit with frame |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4077247A (en) | Method and apparatus for improving the formability of sheet metal | |
JPS5484861A (en) | Punch for burring method | |
JPS56165531A (en) | Punching method for hole in metallic sheet | |
JPS5659540A (en) | Joining device of plate material | |
GB1162388A (en) | A method of producing an internally screw-threaded nut from sheet metal, and an automatic machine for use in carrying out said method. | |
JPS5584233A (en) | Pipe burring device | |
JPS5794431A (en) | Die device | |
JPS55106635A (en) | Method and apparatus for molding flange to circular pipe | |
JPS5758947A (en) | Cold pressing method for cold pressed parts such as bolt or the like | |
JPS561239A (en) | Production of nut | |
JPS55103234A (en) | Precision piercing press processing method of thick material in narrow gap part of sheet metal door hinge for automobile | |
JPS5662725A (en) | Manufacture of cap nut | |
JPS5725224A (en) | Production of watch parts | |
JPS56168921A (en) | Manufacture of washer | |
JPH06238360A (en) | Device for embossing and punching | |
JPS56117849A (en) | Manufacture of hinge | |
JPS5695443A (en) | Production of deformed bolt | |
JPS5540073A (en) | Burring work method of metallic plate | |
JPS5758936A (en) | Manufacture of seamless eccentric reducer tube joint | |
JPS5725225A (en) | Production of watch parts | |
JPS57146428A (en) | Piercing method for plate | |
JPS5772746A (en) | Production of nut | |
JPH07303926A (en) | Method and device for drawing | |
SU1165510A1 (en) | Method of producing hollow forgings | |
GB827809A (en) | Improvements in and relating to self-locking nuts and a method of making the same |