EP2496409A1

EP2496409A1 - Press having a directly driven crank mechanism, press line comprising presses of this type, and a method for producing a press having at least one direct drive

Info

Publication number: EP2496409A1
Application number: EP10781421A
Authority: EP
Inventors: Matthias Graff
Original assignee: Dieffenbacher GmbH Maschinen und Anlagenbau
Current assignee: Dieffenbacher GmbH Maschinen und Anlagenbau
Priority date: 2009-11-04
Filing date: 2010-10-30
Publication date: 2012-09-12
Also published as: BR112012010447A2; DE102009051939A1; WO2011054486A1; JP2013509999A; US20120272843A1; CN102695605A; RU2012122813A

Abstract

The invention relates to a press having a directly driven crank mechanism, a press line and to a method for producing a press having at least one direct drive. Here, a press (21) has at least one press frame (9), a table (8) which is mounted in the latter, and a ram (5) which is driven by means of at least one crank mechanism (12) and has a die upper part (6) and a die lower part (7) on the press table (8), wherein at least one crankshaft (1) having at least one crank pin (2) and at least one connecting rod (3) is arranged as crank mechanism (12), and wherein at least one direct drive which drives the crankshaft (1) directly and comprises at least one rotor (10) and one stator (4) is arranged as motor (14) for the drive of the crankshaft (1). The invention consists in that at least the stator (4) of the motor (14) comprises at least two power carriers (24), the power carriers (24) are configured as independent and exchangeable structural units, the power carriers (24) are arranged radially with respect to the crankshaft (1), and the power carriers (24) are operatively connected (1394) individually or in sections to a control unit (25) by means of supply lines (26).

Description

The invention relates to a press with a directly driven crank mechanism according to the preamble of claim 1. The invention further relates to a press with a directly driven crank mechanism, press line from such presses and a method for producing a press with at least one direct drive

Press line with such presses according to the preamble of

Claim 9. In addition, the invention relates to a method for producing a press with at least one direct drive according to the preamble of claim 14.

Manufacturing machines with a reversing ram usually have a motor drive and a crank mechanism, the

Rotational movement of the drive in a linear and reversing

Movement transforms. Usually, such manufacturing equipment is used as presses for forming or cutting workpieces. In particular, the automotive industry required press lines, consisting of several successively arranged presses and associated

Transport system, for example, from simple supplied coils (flat roll metal tape) complicated geometries, such as fenders,

Vehicle doors, catalyst cases and much more to manufacture. In particular, high-speed presses are designed as mechanical presses as shown above.

In the prior art, many different terminologies have become common, so that in the course of some terms used and explained their best-known synonyms are presented without claim to completeness.

A crank mechanism is, according to the invention, a drive, the one

Rotational movement (from a motor) can transform into a linear movement and found in the literature as eccentric or

Thrust crank drive or the like precipitated. As stated above, the main task of the crank mechanism is to convert a rotational movement into a translational movement, using an eccentric or, as will be the case, a crankshaft. On the crankshaft there is an eccentric bearing, which is mounted outside the axis of rotation of the crankshaft, or in the further crankpin, on which a thrust linkage, referred to as the connecting rod, is usually arranged.

The power flow of the drive can from the smallest possible denominator of the crank mechanism, a crankshaft and a crank pin, to a plunger over several stations such as cranks, joint drives, u. a. or just a connecting rod.

Next is the term press frame for the supporting frame of the press. For the purposes of the invention, all press frames are included in their possible embodiments, such as for example built press frames several individual parts (crosshead top and bottom, side stand) as well as press frame in window frame construction or in tie rod construction. Direct drives and servo presses are characterized by the fact that through the use of, preferably DC motors, via a

Press stroke (OT - UT - OT) to set different speed gradients. Even a pendulum lifting operation is possible without a perpetual danger of overloading of some consuming

Gear or crank gears, if they are available. From DE 28 40 710 a drive system for a forming machine has become known that shows a direct drive for a drive system of a press. The shaft output of the direct drive is still translated via a gear before the driving force on the shaft on a

Crankshaft and finally can be transferred to a crank pin.

From DE 102 60 127 A1 also a direct drive has become known, which is flanged on the outside on a shaft and emits its driving force without the aid of a transmission gear directly to the crankshaft. All these disclosures show a serious disadvantage that the motor is arranged outside the supporting structures of the press or of the press head. The engine is usually over a Clutch or by directly attaching to the main drive shaft

(Flange, clamping set or splined shaft) connected to this.

Another problem is that in particular large

Forming presses with high tonnage of pressing force one or more strong engines need. In forming presses, these are usually found in the press head (above the plunger) and drive via gears one or more crankshafts. These motors are designed for the highest load case in their power consumption and can only be replaced in one piece if they are defective. Usually is

provided that the engine can be lifted by means of a crane upwards. For presses with arrangement of engines off

plant technical reasons within the press head respectively laterally this is not possible, for example.

The object of the invention is to provide a press in which the abovementioned disadvantages are reduced or even prevented.

In particular, it should be possible to create a press series that can be dismantled or upgraded quickly and easily with different drive power and in particular the motors can be easily and quickly repaired by replacing essential drive elements.

Next, a press line is to be created, which at a in the Essentially similar press structure of the individual presses due to a possible press series similar engines and / or

Motor mounts used in the direct drives, but can be varied easily and inexpensively in terms of their necessary performance. At the same time should be made possible that the presses for other tasks with regard to their drive power can be easily converted.

Finally, a method for producing a press is to be provided, which has a direct drive, which is mounted centrally on at least one crankshaft within or on a press frame.

The solution of the problem for a press according to the invention is that at least the rotor without or at least with a part of

Crankshaft spent in the at least partially mounted press and is held in the area of the engine preliminary or ready for operation is arranged and then that the stator is produced by the assembly of individual high performance or by mounting a prefabricated assembly group of at least two power sources in the engine.

The solution for a press line is that at least two presses are arranged with a direct drive in the press line, wherein at least two power carriers are arranged in the motors of each direct drive in the stator. In essence, a press line is characterized in that a workpiece in a predetermined order passes through the individual presses, the workpiece preferably by a

Transfer device is moved between the presses.

The solution for a method according to the invention for producing a press with at least one direct drive is that at least the rotor is spent without or at least part of the crankshaft in the at least partially mounted press and is substantially provisionally held or ready for operation in the area of the engine and that then the stator is mounted by mounting individual power carrier or as a prefabricated assembly group combined power carrier in the engine. With the construction according to the invention, the following advantages result: In a preferred use of similar performance in terms of shape, structure and / or power consumption, there is the possibility of improved Verbaubarkeit, warehousing and repair options.

In particular, it is possible in a press series to offer different performance concepts (power consumption of the motors in kilowatts), which are easily and without complications variable afterwards.

For example, the service providers may be constructed so that the Perimeter of a stator, for example, even multiples of

Service providers can be arranged.

If, in one exemplary embodiment, 64 power carriers with 10 kW each could be installed in a stator of a direct drive, a series of presses offering, for example, an engine power of 640, 320, 160, 80 kW could be offered, so that a customer would need a small press with 160 kW

order and later upgrade to 320 KW or 640 KW without further difficulties by purchasing additional service providers.

In this context, the repair can be easier, because in case of faults or defects in the drive of a press no longer the entire engine needs to be replaced, but only in the case of a defect of a service provider this service provider removed and replaced by a new service provider. Under service providers, the invention in this context, for example, a

Drive coil winding for the permanent magnets attached to the rotor. The advantages can be even better illustrated in a variety of presses, for example in a press line. Size

Press lines for the mechanical forming, for example, of sheet metal have several processing stages, which may include:

One or multi-stage coarse forming, local deep drawing areas,

Post-forming, punching through openings and / or

Edge trimming, folding. If, for example, 6 presses are now installed in a press line, the first press usually requires the most drive power in order to carry out the rough forming of the flat metal sheet. The subsequent presses then usually have a reduced compared to the first press drive power. Advantageously, preferably all of these presses can be equipped with a drive system according to the invention and, for example, can still be used without problems when changing a mass production of a model in the automotive industry, as far as the drive power is concerned. Is it necessary for example in another large series in the example third press the

To increase drive power, not the entire engine needs to be replaced, but it will only increase the number of service providers. The performance carriers are independent and functional components and constitute per se a drive unit or a motor. The peculiarity lies in the fact that preferably a plurality of drive units respectively power carrier are mounted radially on the circumference in the sense of a stator and thereby act independently and possibly can be exchanged individually or in segments in assemblies.

In particular, it is advantageous. That the engine does not consist of one unit but of a large number of units that can be exchanged or installed one after the other. This is

especially useful in a tight space or special

technical presses. Previous direct drives could therefore only be mounted outside or on the edge of a crankshaft, as the direct drives are supplied in one piece by the manufacturer of the drives. But also on the edge of a crankshaft or on the outside of the housing of a press can

Use of such a direct drive be useful, especially in relation to stepped drive power or the simple replacement of individual performers.

With the present invention, it is now possible in particular the

Direct drives also within a press frame to arrange, since the direct drive is installed in parts and easily in case of damage to the power carriers or on the Statoreinzelteilen sections

can be exchanged.

In particular, it is provided that the high-performance carriers are preassembled on prefabricated segments, for example four 45 ° elements to form a stator, and these four segments are installed successively in the press or on the torque arm. In the case of a rotor with permanent magnets arranged radially on the outside, the crankshaft can be placed in the press before or after installation of the power carriers, which is advantageous in accordance with the progress of the press itself. Of course, a parallel assembly, for example, two segments or more power carrier, then the introduction of the shaft and then the subsequent assembly of the remaining elements conceivable. Preferably, the shaft is only roughly stored in the press, then mounted the remaining power carrier and then carried out the alignment of the shaft and the rotor relative to the partially or completely assembled stator.

In a special solution, the rotor with already existing

Permanent magnets, possibly still without connection to a crankshaft or only with a part of the crankshaft in the press, preferably installed in a part of the press such as the drive head or the drive area. Subsequently, the stator segments or individual performance carriers are installed. If not already during installation

done, the crankshaft is mounted and carried out an alignment of the internal structure of the engine, so the rotor to the stator.

Advantages of a direct drive on the crankshaft:

By the close construction of a direct motor directly near one

Connecting rod different load for the crankshaft driven side can be forwarded system harmless, at the same time significantly increases the overall rigidity of the drive train and / or the length of the drive train can be minimized. The necessary space of the press with a direct drive can be significantly optimized and reduced and it can be simple measures for

To realize noise insulation essentially of the drive train by encapsulation. The press can be designed with a short overall length which is particularly advantageous for servo presses in press lines for the production of large body parts. To keep the transport distances between the presses as short as possible, the presses must be close together. The shorter the distance, the faster the

Transfer times. Large presses are usually with an even number of two, four .... pressure points (connecting rod or

Articulated gear connections) carried out on the plunger. The distances transversely and longitudinally between the pressure points or the connecting rods, can not be chosen arbitrarily, but must be selected according to aspects with regard to the reduction of the ram deflection. The secure acceptance of off-center forces, especially in asymmetrical tool or workpiece geometries, is crucial for the arrangement of the contact points of the connecting rods on the plunger of the press. The length of the press head, usually in the direction of passage, is determined by the

Pleuelstangenabstand and the necessary structure of the main bearings and support structures determined.

Next results in the advantageous arrangement of the direct drive, in particular within the necessary support structures of the press a much stiffer drive system and, concomitantly, a reduction of the crankshaft torsion. If the crankshaft is driven as the main drive shaft from the outside, the torsion of the crankshaft adversely affects the entire drive system. The longer the distance between the engine and the crank pin or eccentric eye, the softer it gets Drive system and it comes to control vibrations, since the crankshaft acts like a torsion spring. In particular, serious control and regulation difficulties arise in the case of a pendulum stroke. The vibration readiness of the entire drive system with

corresponding problems for the support structures respectively the

Press frames are problematic and design-intensive in the construction of a press. In a one-sided drive with two connecting rods or two crank pins on a shaft, it also leads to an angular offset, whereby the connecting rods assume different stroke positions. It also results in an improved control and regulatory quality of the system. Due to the high rigidity of the drive system and the precisely adjustable torque and angular position control of the engine, there are no measurable deviations between two crankpins and thus at the connecting rods on a crankshaft. The process data can additionally be recorded immediately. The press has no additional mechanical transmission members (e.g., gear stages) due to the direct drive. The parameters measured on the motor, such as speed, torque and angular position, can be converted without errors in ram speed, pressing force and ram position. Falsifications due to frictional losses or torsion, backlash etc. are excellently eliminated.

Permanent magnet motors, especially at a high drive power, have a fairly high noise level. By installing in the Press head can be easily reduced by relatively simple measures, the noise emissions, for example by closing the press head on the top and bottom. Also, the overall efficiency of the press improves significantly, as much less unused forces by the twist or the

Torque absorption in the bearings occur in a flying bearing of the engine. In a particular embodiment, the stator of the direct drive can be supported in the press head and / or with a

appropriate torque support be provided. Compared to a conventional direct drive, the engine thus has no own storage and the bearing of the rotor within the stator is characterized by the

Main bearing of the crankshaft with taken over. As a result, no additional losses are incurred.

In a particularly preferred embodiment, particularly in large tonnage high tonnage presses, the direct drive is placed on the supporting part of the crankshaft, i. it is located between the pressing force receiving main bearings of the mechanical drive. Preferably, the motor is then also between the main carrying

Support structures (at least two press frames of the press) and

concentric with the main drive shaft (crankshaft). The connecting rods, or in articulated drives, the pivot levers that lead to the connecting rod, this can be either left and right of the engine and thus between the engine and the main bearing (support structure of the press head) or on one side between the engine and one of the main bearings.

Further advantageous measures and embodiments of the subject matter of the invention will become apparent from the subclaims and the following

Description with the drawing out.

In a schematic view:

Figure 1 is a mechanical press with a press frame and a

Press table, wherein in the upper area of the press, in the head area, the drive system, consisting of two consecutively arranged crank drives, each with a

Crankshaft, a crankpin and a connecting rod operatively connected to a plunger,

Figure 2 shows the same embodiment in side view of Figure 1, with

Representation of the two arranged side by side

Crank mechanisms, wherein the separate drive a separate

Direct drive per crank drive is arranged,

Figure 3 shows another possible embodiment with four driven

Connecting rods in turn two crank mechanisms are arranged one behind the other,

Figure 4 shows two representations of possible forced couplings for a

Parallel run of the plunger in plan view for the examples of FIG

3 (left) and Figures 1 and 2 (right), FIG. 5 shows four schematic sectional views of a direct drive consisting of a stator and a rotor on a crankshaft with a different number of power carriers,

Figure 6 is a schematic view of a directly driven crankshaft with the rotor radially outwardly disposed permanent magnet and

Figure 7 is a schematic view of Figure 6 with two rows

arranged permanent magnets, which are enclosed by U-shaped power carriers.

According to Figure 1, the press 21 is at least a press frame 9, a press table mounted therein 8 and a driven by at least one crank 12 plunger 5. Preferably, this press 21 for incorporation of tools 15 or for the production of workpieces (not shown) by means of at least a manufacturing method used in a tool 15, wherein the tool at least one

Tool upper part 6 on the plunger 5 and a lower tool part 7 on the press table 8 consists. As a crank mechanism 12 at least one crankshaft 1 is arranged with at least one crank pin 2 and at least one connecting rod 3, wherein at least one directly the crankshaft 1 driving and mounted in a holder 18 direct drive is provided as a motor 14 for driving the crankshaft 1. In the crank mechanism 12, also called eccentric drive, instead of the connecting rod 3 or between the connecting rod and the crank pin a hinge drive or a crank handle or similar intermediate devices may be arranged, which are commonly used for

Lift height adjustment, for safety reasons or to adjust the sinusoid of the movement of the ram are used.

In particular, to drive a toggle lever drive, a joint drive, another crank mechanism or a combination thereof, the crank mechanism 12 is operatively connected thereto, wherein these are in turn arranged operatively connected to the ram 5 on the output side. In Figure 2, the same embodiment shown in side view of Figure 1. In this particular embodiment, the motors 14 are direct drives between the connecting rods 3 of the individual

Plunger connections arranged. In the present example, the two connecting rods are located on two separate crankshafts 1, which are respectively mounted in the press frame 9 of the press 21. A possibly necessary forced coupling 19 between the two connecting rods is not shown for reasons of clarity and can be found by way of example in the right-hand drawing of FIG. 4.

From Figure 2 it can be seen that the motors 14 from a on

Press frame 9 arranged stator 4 and one on the crank mechanism 12, respectively the crankshaft 1, arranged rotor 10 are made. In

Advantageously, and to optimize the center of gravity of the press 21, both drives are arranged between the connecting rods here. This results also in particular advantages in the routing of the motors 14, which are effectively separated kinematically from each other by a stored in the press frame 9 intermediate storage 20. In an alternative, the

Of course, crankshaft designed continuously and only one engine 14 or even multiple engines, depending on specifications of the press 21, be arranged. A forced coupling of the two crankshafts 1 can be considered as in addition to a parallel to the crankshafts 1 arranged coupling axis

corresponding spur gear be executed on the individual crankshafts or be designed as a direct end connection of the two crankshafts. This does not necessarily have to be arranged within the intermediate storage 20.

Next are advantageous embodiments of the press 21 as separate bearings 17, which in correspondingly large mounting holes of the

Press frame 9 are arranged and have a bearing cap 16.

In the two drawings of Figure 4 are two representations of possible forced couplings for a parallel operation of the plunger in

Top view for the examples of Figure 3 (left) and Figures 1 and 2 (right). The drives or the motors 14 are at least partially, but particularly preferably completely, between the

Connecting rods 3, respectively, the crank pin 2, respectively. The

Forced coupling can be via mechanical spur gear with appropriate intervention possibilities on spur gears of the crankshaft. 1 be realized. Alternatively or in combination, an electronic forced coupling of the frequency converter respectively the

Control device for the motors 14 to be realized. Hereinafter, further preferred embodiments are mentioned, which need not necessarily be realized in detail in detail. Thus, the engine 14 is disposed substantially adjacent, at least adjacent to or preferably integral with a crankpin 2 on the crankshaft 1. Depending on the embodiment and the definition situation, a so-called crank disk can be integrated within or on the engine. In this case, the stator 4 of the motor 14 is preferably designed such that it assumes the function of the crank disk and guides the crank pin 2 outside the center axis of the crankshaft 1. To the

Torque compensation and / or for supporting the motor 14, a holder 18 is provided, which is connected to the press frame 9. The motor 14 may be a direct drive a stator 4 with a drive winding 23 and a rotor 10 disposed therein with permanent magnets 22 and would then be designed as a permanent magnet motor. In principle, at least one engine 14 may be arranged between the crankpins 2 in at least two crankpins 2 on a crankshaft 1. In particular, in the case of a plurality of motors 14 or crank pins 2, a symmetrical arrangement within the press 21 or the crankshafts 1 is to be preferred. It can therefore be provided that with multiple engines 14 and more Crank pin 2 at least two motors 14 are arranged symmetrically to one of the central axes of the press frame 9 and / or one of the central axes of the plunger 5 and / or to the longitudinal center of the crankshaft 1 and / or arrangement of the crank pin 2 on the crankshaft 1. It would also be advantageous if the rotor 10 of the motor 14 and the crankshaft 1 and / or the crank pin 2 consist of a one-piece machine element. Also, in the crank mechanism 12, a height adjustment for the stroke of the plunger 5 may be arranged. An overload protection 11 should protect the press from major damage in the event of an accident and decouple the connecting rods 3 from the plunger 5 in the event of damage.

For torque compensation, the stator 4 of a motor 14 may be arranged on a bearing on the rotor 10 and to compensate for the torques occurring on the stator 4, a torque arm with connection to the press frame 9 appear to make sense. In particular, in the case of two arranged crankshafts 1, each stator 4 of a motor 14 could be arranged on a bearing on the rotor 10 and, to compensate for the occurring torques on the stators 4, a torque support with connection to the motor 14 on the adjacent crankshaft 1

arranged a mutual support of the torques allows. This has particular advantages with respect to the vibration transmission to the press frame 9.

As shown, the engine 14 and the crank mechanism 12 may be disposed within a support structure formed by the press frame 9, which is preferably designed for a pressing force of over 200 tons, preferably over 500 tons, more preferably of over 800 tons.

In particular, in such presses, the stroke of the plunger 5 of over 300 m, preferably over 600 mm, more preferably of over 900 mm possible. Preferably, the press 21 is used for a manufacturing process comprising at least mastering, cutting, joining, coating and / or forming, in particular metal forming.

In particular, the press 21 as a head press or as

Incorporation press for tools of a press line and / or be arranged as at least one transfer press in a transfer press line and / or as a pre-press in the production direction in front of a transfer press line.

Preferably, the bearings 17 of the crankshaft 1 in from the

Press frame 9 removable bearing plates arranged so that a

Opening with a mounting diameter in the press frame can be opened, which preferably corresponds to the diameter of the diameter equal to or greater than the diameter of the rotor 10 on the crankshaft 1 and the largest diameter on the crankshaft 1. It may be helpful during assembly that a split in the longitudinal axis at least once

Crankshaft 1 is arranged in the press, for example, a

Has flange connection, removable bearing pin or a shaft / hub connection. Particularly preferably, the rotor 10 is on the Crankshaft 1 arranged inextricably. For this purpose, for the connection of the rotor 10 with the crankshaft 1, a shrink fit, a welded joint, a solder joint, a friction welded joint, a bond and / or another inseparable joint can be used. A

preferred embodiment of the rotor 10 would be grooves and / or recesses for receiving the permanent magnet 22. These should be used only after the completion of the one-piece machine element therein. In particular, in the case of two separate but axially aligned crankshafts 1, at least one motor 14 should be arranged as a direct drive between the connecting rods 3. For demanding geometries of the

Connecting rod assemblies, it would be advantageous if two separate but in-plane crankshafts 1 for a coaxial

Projection of the two axes of the crankshafts 1 in an axis at least one motor 14 is arranged as a direct drive between the connecting rods 3. By a coaxial projection is meant that the two coaxially arranged axes of the spaced crankshafts are displaced parallel to each other until they lie in one axis. In that regard, it can also be seen here when a direct drive "between" two crankshafts is arranged, even if these crankshafts are not in one piece.

In Figure 5 is shown in four schematic sectional views of a direct drive consisting of a stator and a rotor on a crankshaft with different numbers of power carriers. There is the Stator 4 of the motor 14 from twenty-eight (Figure 5a), twelve (Figure 5b), eight (Figure 5c) or optionally of six (Figure 5d) power carriers 24, which are designed as independent and interchangeable units. The power carrier 24 are arranged radially to the crankshaft 1 and the power carrier 24 are individually or in sections with a

Control unit 25 operatively connected by means of supply lines 26. The areas not marked by a lightning bolt and thus free for optional service providers 24 are the clarity and the better representation of the interchangeable performance carrier 24th

owed. Of course, it is also conceivable that, for example, always three power carrier 24 are arranged side by side, leaving a free area.

In particular, it is advantageous if at least two power carriers 24 with an equivalent power and / or an equivalent outer shape are arranged at a plurality of power carriers 24. Under

Shaping is understood to mean the external size or the arrangement of significant mounting elements. The power carriers 24 are preferably arranged in groups of at least two. Not shown is the possibility to connect the power carrier 24 directly or indirectly via a bracket 18 with the press frame 9. FIGS. 5b and 5c show the possibility that at least one cooling device 27 is arranged either centrally on the stator 4 or on at least one power carrier 24.

In Figures 5c and 5d, the individual supply lines and the exemplary way to a control unit 25, which preferably consists of at least one frequency converter, represented. In FIG. 5 c, the supply lines 26 are to supply sections 28

summarized and are fed either directly or a combined station of control unit 25 and cooling device 27. This is particularly useful if the control unit 25 requires constant cooling.

Not realized in the figures are the following special embodiments: that in an indirect arrangement of the stator 4 on the press frame 9 of the press 21 at least parts of the stator 4 are arranged on a one- or multi-part torque arm, which is operatively connected to the press frame 9, and

that at least parts of the stator 4, a torque support and / or supply lines 25 form a mounting unit.

When using a press 21 according to the invention in a press line at least two presses 21 are arranged with a direct drive, wherein in the motors 14 of each direct drive in the stator 4 at least two

Achievement carrier 24 are arranged. Preferably, the drives in the presses 21 by arranging a different number

Performance carriers 24 different drive powers of direct motors. Particularly preferably, the direct drive of the front in the direction of production arranged head press compared to the subsequent press on a higher performance. As already stated, then at least two

Direct drives in one or more presses 21 of the press line with equivalent power carriers 24 are arranged, which the storage of spare parts and the production of a press 21 clearly

designed cheaper, especially if between the individual presses 21 a press line a different number of

Power carrier 24 are arranged in the stators 4 of the direct drives.

Figures 6 and 7 show a conventional and a particularly preferred embodiment of the direct drive. In FIG. 6, a motor 14 is arranged as a direct drive on a crankshaft 1, which has two crankpins 2 and is mounted in bearings 17 in the press frame 9. At a central element, preferably at the largest diameter of the crankshaft 1, the rotor is arranged with Permantentmagneten 22 on the circumference. Directly opposite a stator 4 is arranged coaxially to the crankshaft, which has a plurality of drive units or power carrier 24. According to Figure 7, the power carrier 24 are U-shaped, wherein the stator 4 with the permanent magnet disposed thereon in the opening of the U-shaped

Power carrier 24 engages. Particularly preferred are the

Permanent magnet 22 disposed on both sides respectively on the axial outer side end faces of the rotor 4. Preferably, the Power carrier 24 in their capacity to provide a drive torque relative to the permanent magnet drive windings or coils, which are flowed through with electricity. With regard to a method for producing a press 21, which is not shown in greater detail in the figures, at least the rotor 10 is brought into the at least partially assembled press 21 without or at least part of the crankshaft 1 and is provisionally held or ready for operation substantially in the area of the motor 14, wherein subsequently the stator 4 by the assembly of individual power carrier 24 or by the assembly of a prefabricated assembly group of at least two

Power carrier 24 is produced in the region of the motor 14. Particularly preferably, the power carriers 24 are connected individually or in sections to a control unit 25 by means of supply lines 26. Preferably, in an indirect arrangement of the stator 4 on

Press frame 9 of the press 21 at least parts of the stator 4 arranged on a one- or multi-part torque arm, which with the

Press frame 9 is operatively connected.

List of Reference 1394:

1st crankshaft

2. crankpin

3. connecting rod

4th stator

5. Pestle

6. Tool shell

7. Tool lower part

8. table

9. Press frame

10. Rotor

11. Overload protection

12. Crank drive

13th

14th engine

15. Tool

16. Bearing cover

17th camp

18th bracket

19. Forced coupling

20. Interim storage

21. Press

22. Permanent magnet

23. Drive winding

24. High performers

25. Control unit

26. Supply line

27. Cooling device

28. Supply segment

Claims

claims

Press (21) with at least one press frame (9), a table (8) mounted therein and a ram (5) driven by at least one crank drive (12) for incorporation of tools (15) or for the production of workpieces by means of at least one

Manufacturing method in a tool (15), wherein a

Tool upper part (6) on the plunger (5) and a lower tool part (7) on the press table (8) is arranged, wherein at least one crankshaft (1) with at least one crank pin (2) and at least one connecting rod (3 is arranged and wherein as the motor (14) for driving the crankshaft (1) at least one directly the crankshaft (1) driving direct drive consisting of at least one rotor (10) and a stator (4) is arranged

d a d u r c h e c e n c i n e s that

at least the stator (4) of the motor (14) of at least two

Service providers (24),

the service providers (24) as independent and interchangeable

Building units are executed,

the power carriers (24) are arranged radially relative to the crankshaft (1) and the power carriers (24) are arranged individually or in sections with a control unit (25) by means of supply lines (26)

are actively connected.

2. Press according to claim 1, characterized in that at several power carriers (24) at least two

Power carrier (24) are arranged with an equivalent power and / or an equivalent outer shape.

3. Press according to claim 1 or 2, characterized in that the power carrier (24) are arranged in groups of at least two.

Press according to one or more of the preceding claims, characterized in that the power carrier (24) directly or indirectly via a holder (18) with the press frame (9) are operatively connected.

Press according to one or more of the preceding claims, characterized in that at least one cooling device (27) is arranged either centrally on the stator (4) or on at least one power carrier (24). 6. Press according to one or more of the preceding claims, characterized in that at least one frequency converter is arranged as a control unit (25). Press according to one or more of the preceding claims, characterized in that an indirect arrangement of the stator (4) on the press frame (9) of the press (21) at least parts of the stator (4) are arranged on a one- or multi-part torque arm, which with the press frame (9) is operatively connected.

Press according to one or more of the preceding claims, characterized in that at least parts of the stator (4), a torque support and / or supply lines (25) form a mounting unit.

Press line for producing and / or forming workpieces with at least two presses (21) according to claim 1, characterized in that at least two presses (21) are arranged with a direct drive in the press line, wherein in the motors (14) each direct drive in the stator (4) at least two power carriers (24) are arranged.

10. press line according to claim 9, characterized

characterized in that different drive powers of the direct motors are arranged in the presses (21) by arranging a different number of power carriers (24).

11. press line according to claim 9, characterized

characterized in that the direct drive of

Production direction front arranged head has opposite the subsequent press a higher performance.

12. press line according to claim 9, characterized

in that at least two direct drives are arranged in one or more presses (21) of the press line with equivalent power carriers (24).

13. press line according to claim 9, characterized

in that a different number of the power carriers (24) is arranged in the stators (4) of the direct drives between the individual presses (21) of a press line.

14. A method for producing a press (21) with at least one

Press frame (9), a table mounted therein (8) and a means of at least one crank drive (12) driven ram (5) for incorporation of tools (15) or for the production of

Workpieces by means of at least one manufacturing method in a tool (15), wherein an upper tool part (6) on the plunger (5) and a lower tool part (7) on the press table (8) is arranged, wherein as the crank mechanism (12) at least one crankshaft (1 ) With at least one crank pin (2) and at least one connecting rod (3) is arranged, and wherein as a motor (14) for driving the

Crankshaft (1) at least one directly the crankshaft (1) driving direct drive, consisting of at least one rotor (10) and a stator (4) is arranged, characterized in that at least the rotor (10) without or at least with a part of the crankshaft (1) spent in the at least partially mounted press (21) and substantially in the area of the motor (14) provisionally held or ready for operation is arranged and that subsequently the stator (4) by mounting individual power carrier (24) or by the assembly of a prefabricated assembly group of at least two power carriers (24) in the region of the motor (14) is produced.

15. The method according to claim 14, characterized in that the power carrier (24) individually or in sections with a

Control unit (25) by means of supply lines (26) are connected.

16. The method according to claim 14, characterized in that to an indirect arrangement of the stator (4) on the press frame

(9) the press (21) at least parts of the stator (4) are arranged on a one- or multi-part torque arm, which is operatively connected to the press frame (9).