WO2002070240A1 - Antriebseinrichtung, insbesondere für eine mechanische presse oder stanze - Google Patents
Antriebseinrichtung, insbesondere für eine mechanische presse oder stanze Download PDFInfo
- Publication number
- WO2002070240A1 WO2002070240A1 PCT/EP2002/002594 EP0202594W WO02070240A1 WO 2002070240 A1 WO2002070240 A1 WO 2002070240A1 EP 0202594 W EP0202594 W EP 0202594W WO 02070240 A1 WO02070240 A1 WO 02070240A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive device
- drive
- shaft
- gear
- flywheel
- 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.)
- Ceased
Links
Classifications
-
- 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
- B30B1/26—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 cams, eccentrics, or cranks
- B30B1/266—Drive systems for the cam, eccentric or crank axis
Definitions
- the present invention relates to a drive device, in particular for a mechanical press or punch, with a rotatably drivable flywheel which can be coupled to the drive shaft of a work transmission, which has an output shaft for actuating a tool drive.
- Drives of mechanical eccentric presses or punches use a flywheel with a high moment of inertia as an energy store for carrying out a working stroke, which flywheel is driven by a drive motor and is mounted on the fixed stand.
- the drive torque can be introduced to carry out a working stroke via a clutch in the drive shaft, which is connected to the input of the working gear, preferably a planetary gear.
- the output shaft, i.e. H. the output shaft of the working gear transmits the drive torque to a crankshaft or eccentric shaft, which forms the actual tappet drive for carrying out the tool working stroke.
- a speed-adjustable drive device for an eccentric press or punch is known in the art LQ
- a second switchable clutch is inserted between the output shaft of the primary transmission and the drive shaft. If this second clutch is engaged, the drive shaft is driven at the output speed of the primary gear. In relation to the torque transmission between the flywheel and the drive shaft, the transmission ratio of the primary transmission is consequently activated, for example a transmission ratio of 2: 1, in order to reduce the tool speed.
- the aforementioned first clutch can thus be used to switch on a direct transmission with a transmission ratio of 1: 1 and with the second clutch a transmission ratio predetermined by the primary transmission, for example 2: 1.
- This version with two clutches to be actuated separately has the particular advantage that the control times when switching to disengage one and engage the other clutch or vice versa can be set independently and therefore particularly precisely. This can ensure, for example, that undefined and therefore undesirable intermediate states, which can result when, for example, both clutches are completely or partially released, can be largely avoided.
- a defined overlap of the clutch actuation can be provided in the ms range.
- the input shaft is connected to an input wheel of the primary transmission which is rotatably mounted coaxially on the drive shaft.
- the output shaft is connected to an output wheel of the primary gearbox which is rotatably mounted coaxially on the drive shaft.
- the input or output gear can each be designed as a spur gear for the construction of a spur gear.
- the input and output wheels can engage first and second step wheels, respectively, which are rotatably connected to one another and are rotatably mounted on the fixed stand of the drive device.
- a plurality of step wheels In order to achieve a high degree of efficiency and a favorable distribution of the transmitted torques, it is advantageous for a plurality of step wheels to be arranged uniformly and concentrically distributed with respect to the input or output wheel.
- the working gear can be designed as a planetary gear. Due to the symmetrical structure and the particularly good transmission properties, the use of planetary gears to drive the tool ram in presses and punches has special advantages that are already used in the prior art.
- a switchable brake can be attached between the drive shaft and the fixed stand of the drive device. This is necessary for the controlled braking of the ram. Because of the torque ratios, this brake is preferably attached to the input of the working gear. It is also conceivable to design this brake together with a clutch as a clutch-brake combination.
- the flywheel, the drive shaft, the clutches and the primary transmission are preferably arranged coaxially.
- the flywheel, which is rotatably mounted on an extension on the stator, the drive shaft, which is guided through the stator in the area of the flywheel, can be integrated as an integrated drive unit together with the primary gearbox and the clutches, plus the brake and the planetary gearbox be made particularly compact with all functional components.
- Fig. 1 is a schematic representation of a drive device according to the invention.
- a drive device is shown in a schematic functional representation and provided as a whole with the reference numeral 1.
- This comprises a flywheel 2, which is rotatably mounted on a fixed stand 3, for example a press stand.
- the flywheel 2 can be driven in rotation by means of a drive motor, not shown.
- the flywheel 2 can be coupled to a drive shaft 5 via a first switchable clutch 4.
- This drive shaft 5 extends coaxially to the flywheel 2 through the stator 3 and is connected on the input side to a working gear designed as a planetary gear 6.
- a working gear designed as a planetary gear 6.
- this comprises a sun gear 6a, a ring gear 6b fixedly connected to the stator 3, and a planet carrier 6c, which forms the output shaft and can be connected, for example, to an eccentric shaft (not shown) of a tool drive.
- the flywheel 2 is in the drawing on the right next to the clutch 4 firmly coupled to a primary gear 7, which is shown as a whole in dashed lines.
- This has an input shaft 7a which is connected to an input spur gear 7b which is rotatably mounted coaxially on the drive shaft 5.
- the torque is transmitted to an output spur gear 7d via pairs of step gears 7c which are rotatably mounted on the stand 3 and of which a plurality, at least two, are arranged uniformly distributed around the input spur gear 7b.
- This can be rotated coaxially on the drive shaft 5 stored.
- An output shaft 7e is firmly connected to this output spur gear.
- the output shaft 7e of the primary transmission 7 can be coupled to the drive shaft 5 via a second releasable clutch 8.
- the reference numeral 9 designates a releasable brake with which the drive shaft 5 can be coupled to the fixed stand 3 for braking.
- Cooling oil can be fed in as a hydraulic medium for actuating the first clutch 4, the second clutch 8 and the brake 9 via a pressure medium supply 10.
- the first clutch 4 is engaged and the second clutch 8 is released by acting on the pressure medium supply 10.
- the drive torque is transmitted directly from the flywheel 2 to the drive shaft 5 via the clutch 4, so that a transmission ratio of 1: 1 is achieved.
- the first clutch 4 is released and the second clutch 8 is engaged.
- the drive torque from the flywheel 2 is now introduced into the primary transmission 7 via the input shaft 7a.
- the drive torque is transmitted via the output shaft 7c and the engaged clutch 8 to the drive shaft 5.
- This results overall in a gear ratio between the flywheel 2 and the drive shaft 5 which corresponds to that of the primary transmission 7, for example a gear ratio of 2: 1.
- the primary transmission 7 is coupled between the flywheel 2 and the drive shaft 5.
- this primary transmission 7 is locked in a rotationally rigid manner in the first shift stage by the first clutch 4, ie it is not in the torque flow of the drive. Due to the fixed coupling to the flywheel 2, it runs with it, but has no connection to the drive shaft 5 on the output side via the released second clutch 8.
- the control times of the clutches 4 and 8 can be precisely coordinated with one another, so that one clutch is engaged exactly when the other is released, possibly with a minimal overlap of the switching times, in order to avoid undefined intermediate states when switching.
- the clutches 4 and 8 only have to be designed to transmit the torque differences occurring when switching, and not, as in the prior art, to the entire drive torque.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02724216A EP1370411B1 (de) | 2001-03-08 | 2002-03-08 | Antriebseinrichtung, insbesondere für eine mechanische presse oder stanze |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10111346.3 | 2001-03-08 | ||
| DE10111346A DE10111346C2 (de) | 2001-03-08 | 2001-03-08 | Antriebseinrichtung, insbesondere für eine mechanische Presse oder Stanze |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002070240A1 true WO2002070240A1 (de) | 2002-09-12 |
Family
ID=7676849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/002594 Ceased WO2002070240A1 (de) | 2001-03-08 | 2002-03-08 | Antriebseinrichtung, insbesondere für eine mechanische presse oder stanze |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1370411B1 (de) |
| DE (1) | DE10111346C2 (de) |
| WO (1) | WO2002070240A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1894708A1 (de) | 2006-09-01 | 2008-03-05 | Haulick + Roos GmbH | Antriebseinrichtung für eine Press-, Stanz- oder Umformautomaten |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050557A (en) * | 1975-07-23 | 1977-09-27 | Verson Allsteel Press Company | Two-speed transmission having enclosed flywheel |
| US4051933A (en) * | 1976-03-17 | 1977-10-04 | Verson Allsteel Press Company | Low inertia clutch and brake system |
| DE4004290A1 (de) * | 1989-03-23 | 1990-09-27 | Warnke Umformtech Veb K | Antrieb fuer mechanische pressen |
| US5194057A (en) * | 1992-01-24 | 1993-03-16 | Sommer Company | Two speed press drive |
| DE4309785A1 (de) * | 1993-03-25 | 1994-09-29 | Heinz Kaiser | Exzenterpresse mit schaltbarem Planetengetriebe |
| US5697862A (en) * | 1996-01-31 | 1997-12-16 | Midwest Brake Bond Company | Two-speed press drive |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1627971A1 (de) * | 1967-12-02 | 1971-07-29 | Schuler Gmbh L | Schleichgangantrieb fuer Pressen |
| DE19733326C2 (de) * | 1997-08-01 | 2002-05-16 | Fraunhofer Ges Forschung | Antriebseinrichtung für eine Umformmaschine |
-
2001
- 2001-03-08 DE DE10111346A patent/DE10111346C2/de not_active Expired - Fee Related
-
2002
- 2002-03-08 EP EP02724216A patent/EP1370411B1/de not_active Expired - Lifetime
- 2002-03-08 WO PCT/EP2002/002594 patent/WO2002070240A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050557A (en) * | 1975-07-23 | 1977-09-27 | Verson Allsteel Press Company | Two-speed transmission having enclosed flywheel |
| US4051933A (en) * | 1976-03-17 | 1977-10-04 | Verson Allsteel Press Company | Low inertia clutch and brake system |
| DE4004290A1 (de) * | 1989-03-23 | 1990-09-27 | Warnke Umformtech Veb K | Antrieb fuer mechanische pressen |
| US5194057A (en) * | 1992-01-24 | 1993-03-16 | Sommer Company | Two speed press drive |
| DE4309785A1 (de) * | 1993-03-25 | 1994-09-29 | Heinz Kaiser | Exzenterpresse mit schaltbarem Planetengetriebe |
| US5697862A (en) * | 1996-01-31 | 1997-12-16 | Midwest Brake Bond Company | Two-speed press drive |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1370411A1 (de) | 2003-12-17 |
| DE10111346A1 (de) | 2002-09-26 |
| EP1370411B1 (de) | 2010-06-02 |
| DE10111346C2 (de) | 2003-03-20 |
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