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JPS5464789A - Punch-press with plate holding device - Google Patents

Punch-press with plate holding device

Info

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
Application number
JP13189177A
Other languages
Japanese (ja)
Inventor
Fukuharu Onishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takigawa Kogyo Co Ltd
Original Assignee
Takigawa Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takigawa Kogyo Co Ltd filed Critical Takigawa Kogyo Co Ltd
Priority to JP13189177A priority Critical patent/JPS5464789A/en
Publication of JPS5464789A publication Critical patent/JPS5464789A/en
Pending legal-status Critical Current

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
JP13189177A 1977-11-02 1977-11-02 Punch-press with plate holding device Pending JPS5464789A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139471A (en) * 1974-10-01 1976-04-02 Shigeo Kasai PURESUKIKAI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139471A (en) * 1974-10-01 1976-04-02 Shigeo Kasai PURESUKIKAI

Cited By (2)

* Cited by examiner, † Cited by third party
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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