JPS5464789A - Punch-press with plate holding device - Google Patents
Punch-press with plate holding deviceInfo
- Publication number
- JPS5464789A JPS5464789A JP13189177A JP13189177A JPS5464789A JP S5464789 A JPS5464789 A JP S5464789A JP 13189177 A JP13189177 A JP 13189177A JP 13189177 A JP13189177 A JP 13189177A JP S5464789 A JPS5464789 A JP S5464789A
- Authority
- JP
- Japan
- Prior art keywords
- pressure fluid
- workpiece
- punch
- low pressure
- piston
- 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
Landscapes
- Punching Or Piercing (AREA)
Abstract
PURPOSE: To improve the accuracy of punch-machining with a workpiece being held by a plate holder in the process before punching the workpiece.
CONSTITUTION: After letting high pressure fluid out of an inlet and outlet port for a high pressure fluid and letting low pressure fluid into a low pressure fluid compartment 5a, both a main piston 3 and a pressing piston 6 are descended together and the bottom end surface of a plate holder 7 is put in contact with the top surface of a workpiece 9, which is thus pressed against a die 10. Then while the plate holder 7 stops descending with the main piston 3 allowed to continue to descend, the said plate 9 is punch-machined with a punch 4. Next, as the said high pressure fluid is prevented to flow in while allowing low pressure fluid to continue to flow into the low pressure compartment 5a, the main piston 3 is raised. At this time the pressing piston 6 still keeps on pressing the workpiece 9. As the main piston 3 is raised, the pressing piston 6 is also raised with the help of a setting pin 8, and the pressure applied on the workpiece 9 is let out.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13189177A JPS5464789A (en) | 1977-11-02 | 1977-11-02 | Punch-press with plate holding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13189177A JPS5464789A (en) | 1977-11-02 | 1977-11-02 | Punch-press with plate holding device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5464789A true JPS5464789A (en) | 1979-05-24 |
Family
ID=15068556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13189177A Pending JPS5464789A (en) | 1977-11-02 | 1977-11-02 | Punch-press with plate holding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5464789A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6071647U (en) * | 1983-10-21 | 1985-05-21 | 石川島播磨重工業株式会社 | Dissipated gas combustion device in coke dry fire extinguishing equipment |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5139471A (en) * | 1974-10-01 | 1976-04-02 | Shigeo Kasai | PURESUKIKAI |
-
1977
- 1977-11-02 JP JP13189177A patent/JPS5464789A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5139471A (en) * | 1974-10-01 | 1976-04-02 | Shigeo Kasai | PURESUKIKAI |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6071647U (en) * | 1983-10-21 | 1985-05-21 | 石川島播磨重工業株式会社 | Dissipated gas combustion device in coke dry fire extinguishing equipment |
JPS6122993Y2 (en) * | 1983-10-21 | 1986-07-10 |
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