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FR2448431B1 - - Google Patents

Info

Publication number
FR2448431B1
FR2448431B1 FR8002593A FR8002593A FR2448431B1 FR 2448431 B1 FR2448431 B1 FR 2448431B1 FR 8002593 A FR8002593 A FR 8002593A FR 8002593 A FR8002593 A FR 8002593A FR 2448431 B1 FR2448431 B1 FR 2448431B1
Authority
FR
France
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.)
Expired
Application number
FR8002593A
Other languages
French (fr)
Other versions
FR2448431A1 (en
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.)
SMG Sueddeutsche Maschinenbau GmbH
Original Assignee
SMG Sueddeutsche Maschinenbau GmbH
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
Priority claimed from DE19792904371 external-priority patent/DE2904371A1/en
Priority claimed from DE19792939291 external-priority patent/DE2939291A1/en
Application filed by SMG Sueddeutsche Maschinenbau GmbH filed Critical SMG Sueddeutsche Maschinenbau GmbH
Publication of FR2448431A1 publication Critical patent/FR2448431A1/en
Application granted granted Critical
Publication of FR2448431B1 publication Critical patent/FR2448431B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/24—Drives for hammers; Transmission means therefor for power hammers operated by steam, air, or other gaseous pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/28—Drives for hammers; Transmission means therefor for power hammers operated by hydraulic or liquid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/46—Control devices specially adapted to forging hammers, not restricted to one of the preceding subgroups

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
FR8002593A 1979-02-06 1980-02-06 DEVICE FOR EXERCISING PERCUSSIONS ON WORKPIECES Granted FR2448431A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792904371 DE2904371A1 (en) 1979-02-06 1979-02-06 Hydraulically actuated forging hammer - uses force due to gas compressed by free piston to return main piston
DE19792939291 DE2939291A1 (en) 1979-09-28 1979-09-28 Exertion percussive force on workpiece - has working chamber pressurised by working fluid and damping occurring when working piston enters annular piston recess at end of stroke

Publications (2)

Publication Number Publication Date
FR2448431A1 FR2448431A1 (en) 1980-09-05
FR2448431B1 true FR2448431B1 (en) 1985-03-15

Family

ID=25777692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8002593A Granted FR2448431A1 (en) 1979-02-06 1980-02-06 DEVICE FOR EXERCISING PERCUSSIONS ON WORKPIECES

Country Status (4)

Country Link
CH (1) CH645824A5 (en)
FR (1) FR2448431A1 (en)
GB (1) GB2042640B (en)
IT (1) IT1129591B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500767A1 (en) * 1981-02-27 1982-09-03 Voron Proizv Trigger mechanism for high speed hammer - has control valve set-shifting by double acting solenoid element operated by two spring-connected arms
DE3513369A1 (en) * 1985-04-15 1986-10-16 Alten, Kurt, 3015 Wennigsen Hydraulic working cylinder
US5138933A (en) * 1989-12-18 1992-08-18 The Babcock & Wilcox Company Activator device for movable components
SE517269C2 (en) 2001-05-31 2002-05-21 Stroemsholmen Ab Arrangement for press tools to brake the piston / piston rod of a gas spring
CN101462147B (en) * 2009-01-12 2011-04-13 张国庆 High-speed air-actuated hammer-forging device
CN102688971A (en) * 2012-06-08 2012-09-26 镇江市锻压机床厂 Double-cylinder hydraulic hammer
US10982690B2 (en) * 2017-03-15 2021-04-20 Seiko Instruments Inc. Cylinder device, press machine, workpiece clamping apparatus, cylinder device actuating method, method for clamping workpiece, and method for pressing workpiece

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608650A (en) * 1968-11-30 1971-09-28 Saburo Matsusaka Impact cylinder apparatus
FR2170920A1 (en) * 1972-02-08 1973-09-21 Kh Aviat
US3796050A (en) * 1972-05-18 1974-03-12 Foster Miller Ass High energy rate actuator
FR2190545A1 (en) * 1972-07-04 1974-02-01 Kh Avia Sionny

Also Published As

Publication number Publication date
GB2042640B (en) 1983-01-06
IT8019616A0 (en) 1980-02-01
IT1129591B (en) 1986-06-11
CH645824A5 (en) 1984-10-31
GB2042640A (en) 1980-09-24
FR2448431A1 (en) 1980-09-05

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Legal Events

Date Code Title Description
ST Notification of lapse