DE202009009581U1 - Drive for a cutting tool of a processing machine - Google Patents

Abstract

Drive for a cutting tool of a processing machine, in particular for a press for the production of boards, wherein the cutting tool with a rotary drive, which is arranged approximately in the adjusting axis of the cutting tool, is pivoted about a vertical adjusting axis, characterized in that the drive designed as a torque motor is, which is operatively connected to a pivot plate for receiving the cutting tools, wherein the torque motor is supported on a base plate (1) and has a substantially cylindrical cross-section, starting from the outer cylindrical surface a stator (15), a rotor (16), a rotor ring (17), at least two radial bearings (18) and a fixed mandrel (2) are arranged and wherein centrally in the contour of the axis of rotation of the torque motor, a transmitter assembly / path measuring system (14) is arranged.

Description

The The invention relates to a drive for a cutting tool a processing machine, in particular for a press for the production of boards, wherein the cutting tool with a Rotary drive, which is approximately in the adjustment axis of the cutting tool is arranged to pivot a vertical adjusting axis.

For various technical applications are made of sheet-like Metal or plastic structures initially disc-shaped Cut elements following to objects with different geometrical contours are designed. One in this typical example are punching and pressing operations in the Manufacture of subcontracting products for the automotive industry, where punched out of a web of blanks or plates and be transformed in further processing steps.

Provided this trapezoidal or arcuate circuit boards needed being processed in deep-drawing presses will do so often realized with a so-called pivotal section. In doing so, the cutting tool must be pivoted through an angle between the press strokes, to achieve the desired contour of the board. This can be done by Use hydraulic assemblies done by the outside lying sections of a centrally arranged storage rotatable cutting tool with two hydraulic cylinders in operative connection stand, which are each acted in opposite directions to each other. However, with such constructions, the cutting tool can only conditionally be aligned exactly, because by the conversion of the linear Movement of the hydraulic cylinder in a rotary motion of the cutting tool inevitably result in inaccuracies. Furthermore is up for necessary conversions of the press other cutting conditions due to different boards a considerable amount of time for the conversion of the relative movements between hydraulic cylinder and cutting tool necessary.

alternative for hydraulic adjustment, the rotatably mounted Cutting knife of the tool also via servo drives and be pivoted forth, which the cutting tool on each set required cutting angle. For this is it is known to have two or four opposite Coupling servo drives with each other via a toothed belt. The timing belt is provided with means for rotating the cutting tool about the adjusting axis in operative connection. For the arrangement However, the servo drives and the timing belt is a considerable Space required.

Out DE 297 03 482 U1 a press is known in which a rotary drive is arranged approximately in the adjusting axis of the cutting tool. The cutting tool is rotated by the rotary drive about a vertical adjusting axis relative to its base plate and to other components of the press. In this case, it is proposed that the rotary drive be designed as a hydromechanical pivoting motor and supported directly in the press. Furthermore, it is stated that instead of a hydromechanical slewing motor, other mechanical or electrical units can be used without this document gives any hints on this specific constructions.

task The invention is a drive assembly for the cutting tool to create a press that is approximately in the control axis of the cutting tool is arranged and with a compact design the entire assembly and a precise tool adjustment be achieved.

These Task is solved by the drive as a torque motor is configured with a pivot plate for receiving the cutting tools in Active compound is. The torque motor is on a base plate supported and has a substantially cylindrical cross-section on, starting from the outer cylindrical surface a stator, a rotor, a rotor ring, at least two radial bearings and a fixed mandrel are arranged. In the contour of the rotation axis from the torque motor, a transmitter assembly / distance measuring system is arranged. Advantageous embodiments are the subject of dependent claims, whose characteristics are described in more detail in the embodiment become.

With the technical solution according to the invention is the required space for the drive of the cutting tool a press advantageously reduced. The flat design requires a small installation space in the press. Furthermore, can The tool can be precisely adjusted with little effort. The Functionality of this drive module can be particularly in Production lines with coil system and sinker technology be used.

The Arrangement of the drive in the contour of the adjusting axis of the cutting tool advantageously reduces the proportion of masses to be displaced. this makes possible a high speed in the production plant. Continue to be omitted Thus, the necessary in other constructions transmission elements. consequently the proportion of masses to be relocated is further reduced and simultaneously reduces the number of wear parts, whereby a precise position fixing of the cutting tools over a long period of use is guaranteed.

In an inventively designed Press is used as the base plate preferably a solid casting, which serves to accommodate the assemblies for material supply, storage, drive the tools, attachment of the board accelerator and possibly also auxiliary assemblies (supports, etc.). The base plate further realizes tasks for centering the cutting tool when placed on the sliding table and for tension against the press table.

Of the Drive for the swivel plate with the clamped cutting tools takes place over an angular range of, for example, max. ± 30 ° over the centrally arranged and designed as a torque motor module. The entire drive is via a separate recooling system cooled with water. The torque motor is called a changeable assembly It is conceived and designed as a complete unit on the cast base plate attached. This results in advantages during maintenance work. simultaneously Machine tools can thus by assigning separate interchangeable modules with little effort for different requirements be modified.

On the rotor of the torque motor is mounted outside and inside Fixed swivel plate. The swivel plate is for recording suitable for various cutting tools. So can Geradschnittwerkzeuge for the production of straight or trapezoidal blanks be used while arcuate with bow cutting tools Blanks are produced.

In the drive assembly are essential components of the stator, the rotor with rotor ring and a radial bearing integrated. The Radial bearings are fastened to the fixed central mandrel, which over the Base plate is connected to the base frame. In a free one Contour of the mandrel is housed a transmitter assembly (displacement measuring system), which can also be replaced separately.

At the Rotor ring is attached to a moment ring, which increases the drive torque the pivot plate transfers. The storage of the Rotor and the storage of the central sliding plate of the swivel plate take place over an oil bath. This is the oil level electrically monitored so that at an early warning to the oil level only a hint triggered and only upon detection of a defined minimum oil level the Plant is forcibly shut down.

to Absorption of all vertical forces, especially from the cutting process, are at the bottom of the swivel plate in the area of it above seated cutting tool fixed lubricant sliding plates arranged which slide on a sanded surface. On the Top of the pivot plate is a cover for changing the encoder module. The refilling of oil takes place also via an oil filler opening on the swivel plate. The cutting forces are centered over an oil bath sliding plate on the fixed Transfer mandrel and further passed to the press table.

One Embodiment is shown in the drawing and is described below. Show it:

1 a drive according to the invention in plan view

2 a sectional view taken along the line AA according to 1

3 a sectional view taken along the line BB according to 1

4 the complete drive assembly in perspective view

The drive shown in the drawing is designed in particular as a swivel cutting tool for a press for the production of boards. In this case, the cutting tool is assigned a rotary drive. 1 shows a plan view in the direction of the vertical adjusting axis of the cutting tool, wherein the drive is arranged in the contour of this adjusting axis. The drive is designed as a torque motor, which is in operative connection with a pivot plate for receiving the cutting tools.

Out 2 are essential assemblies of the drive can be seen. Consequently, the torque motor is on a base plate 1 supported and has a substantially cylindrical cross-section. In this case, starting from the outer cylinder jacket surface, a stator 15 with liquid cooling, a rotor 16 , a rotor ring 17 , at least two radial bearings 18 and a fixed spine 2 arranged.

The radial bearings 18 are at the thorn 2 attached. The thorn 2 is over the base plate 1 supported on the base frame of the press, which is not shown in detail in the drawing. In the thorn 2 is a recess for receiving a transmitter assembly / Wegmesssystem 14 designed.

The swivel plate for holding the cutting tools is supported several times. It is outside on the rotor 16 and fastened on sliding plates inside. Here, a sliding plate is arranged on the underside of the movable pivot plate. This sliding plate is on a bearing plate 6 led, firmly on the spike 2 is supported. The rotor 16 , the sliding plate associated sliding plate and the bearing plate 6 are in an oil bath 28 stored, which is assigned an oil level monitoring.

The drive torque is on the swivel plate with a moment ring 5 transferred to the rotor ring 17 is attached.

In addition to the named components, the drive further components, for example according to 1 a cover plate 7 , an overflow screw 12 and a sealing plate 13 , Other components are provided as connecting and sealing elements, such. B. from 2 apparent cylinder screws 31 . 32 . 33 . 34 . 38 and 39 or the O-rings 24 . 25 . 26 and 27 , With regard to further components, reference is made to the list of reference numerals.

4 shows the drive assembly in perspective view. From this representation are again the spatial assignments of base plate 1 , Stator 15 , Centering ring 8th , Support ring 10 , Moments ring 5 , Oil bath 28 , Bearing ring 6 and the one in the thorn 2 arranged encoder assembly 14 seen.

1

baseplate

2

mandrel

3

support ring

4

Stand Off

5

moment ring

6

bearing ring

7

Cover plate

8th

centering

9

shell

10

support ring

11

gusset

12

Overflow screw

13

sealing plate

14

Encoder board / displacement measuring system

15

stator

16

rotor

17

rotor ring

18

radial bearings

20

Screw

22

Shaft seal

23

Shaft seal

24

O-ring

25

O-ring

26

O-ring

27

O-ring

28

oil bath

30

Deep groove ball bearings

31

cylinder head screw

32

cylinder head screw

33

cylinder head screw

34

cylinder head screw

36

straight pin

37

cylinder head screw

38

cylinder head screw

39

cylinder head screw

40

cylinder head screw

41

Senkschraube

42

O-ring

43

cylinder head screw

92

torque motor (Completely)

93

capacitive sensor

94

Tool holders

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 29703482 U1 [0005]

Claims (10)

Drive for a cutting tool of a processing machine, in particular for a press for the production of boards, wherein the cutting tool with a rotary drive, which is arranged approximately in the adjusting axis of the cutting tool, is pivoted about a vertical adjusting axis, characterized in that the drive designed as a torque motor is, which is in operative connection with a pivot plate for receiving the cutting tools, wherein the torque motor on a base plate ( 1 ) is supported and has a substantially cylindrical cross section, wherein starting from the outer cylindrical surface a stator ( 15 ), a rotor ( 16 ), a rotor ring ( 17 ), at least two radial bearings ( 18 ) and a fixed spike ( 2 ) are arranged and wherein centrally in the contour of the axis of rotation of the torque motor, a transmitter assembly / position measuring system ( 14 ) is arranged. Drive according to claim 1, characterized in that in the mandrel ( 2 ) a recess for receiving the position measuring system ( 14 ) configured with a sleeve ( 9 ) is closed. Drive according to claim 1, characterized in that the mandrel ( 2 ) over the base plate ( 1 ) is supported on the base frame of the press. Drive according to claim 1, characterized in that on the stator ( 15 ) a centering ring ( 8th ) is mounted, on which a support ring ( 10 ) is supported. Drive according to claim 1, characterized in that on the rotor ring ( 17 ) a moment ring ( 5 ) is mounted, which transmits the drive torque to the pivot plate. Drive according to claim 1, characterized in that on the underside of the pivot plate, a sliding plate is arranged, which on a fixed on the mandrel ( 2 ) supported bearing plate ( 6 ) to be led. Drive according to claim 1, characterized in that the rotor ( 16 ) with rotor ring ( 17 ), arranged on the underside of the pivot plate sliding plate and the bearing plate ( 6 ) in an oil bath ( 28 ). Drive according to claim 7, characterized in that the oil bath ( 28 ) an oil level monitoring is assigned. Drive according to claim 1, characterized in that the stator ( 15 ) is equipped with a liquid cooling. Drive according to claim 1, characterized in that the radial bearings ( 18 ) on the thorn ( 2 ) are attached.