IT1261844B - Perfezionamento nelle macchine formatrici. - Google Patents
Perfezionamento nelle macchine formatrici.Info
- Publication number
- IT1261844B IT1261844B ITRM930581A ITRM930581A IT1261844B IT 1261844 B IT1261844 B IT 1261844B IT RM930581 A ITRM930581 A IT RM930581A IT RM930581 A ITRM930581 A IT RM930581A IT 1261844 B IT1261844 B IT 1261844B
- Authority
- IT
- Italy
- Prior art keywords
- pressing cylinder
- pair
- piston pump
- stroke frequency
- improvement
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/12—Drives for forging presses 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
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
- B30B15/20—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram controlling the speed of the ram, e.g. the speed of the approach, pressing or return strokes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Forging (AREA)
- Press Drives And Press Lines (AREA)
- Control Of Presses (AREA)
- Glass Compositions (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Display Devices Of Pinball Game Machines (AREA)
Abstract
In una macchina formatrice tipo pressa idraulica o fucinatrice con almeno un cilindro premitore caricato da una coppia di valori di frequenza di corsa e di volume prestabilita da una pompa a pistone, la frequenza della corsa e il volume del cilindro premitore vengono adattati alle esigenze della lavorazione dalla stiratura fino alla finitura se al cilindro premitore, parallelamente alla prima pompa a pistone, viene associata una seconda pompa a pistone con seconda coppia di valori di frequenza di corsa e di volume diversa dalla prima coppia di valori e se le due pompe a pistone sono in grado di essere commutate contemporaneamente o alternativamente sul cilindro premitore.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4232728A DE4232728C2 (de) | 1992-09-30 | 1992-09-30 | Umformmaschine mit Presszylinder mit zwei zugeordneten Kolbenpumpen |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM930581A0 ITRM930581A0 (it) | 1993-09-01 |
ITRM930581A1 ITRM930581A1 (it) | 1995-03-01 |
IT1261844B true IT1261844B (it) | 1996-06-03 |
Family
ID=6469195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM930581A IT1261844B (it) | 1992-09-30 | 1993-09-01 | Perfezionamento nelle macchine formatrici. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5447050A (it) |
JP (1) | JPH06210493A (it) |
DE (1) | DE4232728C2 (it) |
IT (1) | IT1261844B (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT404440B (de) * | 1996-09-17 | 1998-11-25 | Gfm Holding Ag | Verfahren zur hubfrequenzsteuerung einer schmiedemaschine und schmiedemaschine zum durchführen des verfahrens |
AT406648B (de) * | 1998-10-13 | 2000-07-25 | Gfm Beteiligungs Und Managemen | Schmiedemaschine |
JP4613055B2 (ja) * | 2004-11-30 | 2011-01-12 | 株式会社菊池製作所 | ねじ駆動式油圧プレス装置 |
EP2002129A4 (en) * | 2006-03-13 | 2011-08-03 | Volvo Constr Equip Ab | DEVICE AND METHOD FOR DISTRIBUTING HYDRAULIC FLUID ON A WORK VEHICLE |
WO2010015279A1 (en) * | 2008-08-07 | 2010-02-11 | Agilent Technologies, Inc. | Synchronization of supply flow paths |
DE102009048428B4 (de) * | 2009-10-06 | 2017-11-02 | Langenstein & Schemann Gmbh | Umformmaschine zum Schmieden, insbesondere Streckschmieden, von Werkstücken |
CN102155443B (zh) * | 2011-03-22 | 2013-08-28 | 华南理工大学 | 一种交流液压逆变控制系统及其控制方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1415835A (en) * | 1971-09-24 | 1975-11-26 | Mannesmann Meer Ag | Hydraulic presses |
DE2306566C2 (de) * | 1973-02-10 | 1983-11-17 | Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf | Hydraulischer Antrieb für Schmiedemaschinen |
SU529092A1 (ru) * | 1974-08-23 | 1976-09-25 | Предприятие П/Я А-7795 | Гидравлический пресс |
SU708589A1 (ru) * | 1976-06-17 | 1986-06-30 | Рязанский завод тяжелого кузнечно-прессового оборудования | Радиально-ковочна машина |
FR2413150A1 (fr) * | 1977-12-27 | 1979-07-27 | Meral | Pince de rivetage hydropneumatique ou appareil analogue pour d'autres usages |
DE3205740C2 (de) * | 1982-02-18 | 1986-02-20 | Max Refflinghaus Maschinen- u. Werkzeugfabrik GmbH & Co KG, 5657 Haan | Drahtbiegemaschine |
JPS59202134A (ja) * | 1983-05-02 | 1984-11-15 | Hitachi Ltd | 高速鍛造機 |
DE3607737C1 (de) * | 1986-03-08 | 1987-10-29 | Pahnke Eng Gmbh & Co Kg | Hydraulisch angetriebene Schmiedemaschine |
JP2591651B2 (ja) * | 1988-04-18 | 1997-03-19 | 三菱長崎機工株式会社 | 高速ハンマープレス |
-
1992
- 1992-09-30 DE DE4232728A patent/DE4232728C2/de not_active Expired - Fee Related
-
1993
- 1993-09-01 IT ITRM930581A patent/IT1261844B/it active IP Right Grant
- 1993-09-29 JP JP5268071A patent/JPH06210493A/ja active Pending
- 1993-09-30 US US08/128,915 patent/US5447050A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ITRM930581A0 (it) | 1993-09-01 |
DE4232728C2 (de) | 1998-01-29 |
ITRM930581A1 (it) | 1995-03-01 |
JPH06210493A (ja) | 1994-08-02 |
DE4232728A1 (de) | 1994-03-31 |
US5447050A (en) | 1995-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19960925 |