DE102013111337A1 - Robot punching cell - Google Patents

Abstract

A punching end treatment unit for processing workpieces in a punching cell is presented which has at least one tool holder for exchangeable reception of a machining tool for machining the workpieces, the machining tool comprising a punching unit, a holder and a finishing unit, wherein the holder holds the workpiece against the workpiece Punching end treatment unit fixed, wherein the punching unit punches an opening in the workpiece, as long as the workpiece is fixed by the holder, wherein the finishing unit is attached to the workpiece as long as the workpiece is fixed by the holder, and the finishing unit finishes the opening.

Description

Field of the invention

The present invention relates to a punching and finishing unit for an automated punching cell and to a method for automated punching and welding and / or gluing of workpieces.

Background of the invention

Robots and automated processing systems are taking over more and more work, especially in those fields in which working with large and unwieldy or heavy parts.

Especially in series or mass production, repetitive work can be done quickly, precisely and reliably and at the same time labor can be saved. High volume numbers justify the high investment costs for the automation system.

Thus, it is known to use automated processing systems for the introduction of openings in parts, as it is successfully offered for example by iNDAT Datensysteme and industrial automation.

In automation systems, typically only a single or a few work steps are performed on the pieces, so that the piece throughput per step is high.

However, the demands placed on automation systems are changing increasingly as the variety of variants desired by the manufacturer increases and thus the numbers of parts produced in a variant fall. Automation systems become less economical because changes in the work step are accompanied by mostly manual changes to the automation system. The diversity of variants increasingly affects the individual piece on which various work is to be carried out. Conventional automation systems can typically perform only one step and must be retrofitted for another step or even rebuilt.

General description of the invention

The invention therefore has the task of further developing a robot punching cell such that several work steps can be performed on a workpiece without having to factor in long conversion or changeover times.

Furthermore, the invention has the task of performing different work steps on a workpiece so that the combined implementation by the inventively improved robot punch cell time savings over known automation systems occurs.

The invention has also set itself the task of being able to use such a development, for example, in conventional automation systems for retrofitting and improvement of facilities.

Furthermore, the invention provides a method for the automated machining of workpieces in a punching cell.

In particular, the disadvantages of the prior art should be reduced or eliminated.

The object of the invention is solved by the subject matter of the independent claims. Advantageous developments of the invention are defined in the subclaims.

A punching end treatment unit according to the invention for processing workpieces in a punching cell has at least one tool holder for exchangeable reception of a machining tool for machining the workpieces. The processing tools are thus held by the tool holder and can be used for machining workpieces after use in the tool holder. The attachment of the processing tools in the tool holder is preferably done automatically, so that particularly advantageous no interruption of the production process takes place. In a simple version, the machining tools can also be used manually in the tool holder of the punching finishing unit.

The processing tool comprises a punching unit, a counter tool and a finishing unit. The punching unit preferably comprises a holder which fixes the workpiece to the punching end treatment unit, so that no or very little movement can take place in the fixing. The movement tolerance of the workpiece in the fixation is preferably less than 1 mm, particularly preferably 0.1 mm or less. In other words, the workpiece in the fixation maintains the position predetermined by the holder very precisely, so that all working steps on the workpiece, which are carried out during a fixation of the workpiece, can be carried out with high precision.

The punching unit is designed to punch an opening in the workpiece. The punching operation is typically performed by automatically bringing an upper tool up to the workpiece from above while supporting the counter tool from underneath the workpiece to counter the punch force exerted on the workpiece by the upper tool. During this process, the workpiece is preferably fixed by the holder or the holder in cooperation with the counter tool. As a result, a displacement of the workpiece can be avoided. The automated movement of the punching unit can be done by pneumatic drive, but also electromotive or hydraulic employment is possible. Of course, depending on the shape of the workpiece and / or the structural conditions of the punching end treatment unit to be built, it is also possible for the punching piston to be set against the workpiece from the side or from below. The employment of the upper tool from above, however, is preferred because in this case the fixation of the workpiece is easier to accomplish by the workpiece is placed on the counter tool.

The punching unit therefore preferably comprises an upper tool which can be set against the workpiece substantially from above in the direction of the ground. The punching unit may further comprise an adjustable linear actuator as Anstellantrieb for hiring the upper tool to the workpiece. The feed force of the adjustable linear actuator is preferably generated pneumatically, hydraulically or servo-motor.

The punching unit may further comprise a punching piston of the upper tool, wherein the punching piston for punching the opening can be made from above to the workpiece. In other words, the upper tool preferably consists of the punching piston and the holder.

The upper tool can also automatically drive back to a basic position after punching the opening, so that the immediate vicinity of the workpiece is released. In particular, after the punching of the opening, the punching piston can automatically return to a basic position, wherein the holder remains on the workpiece, so that the workpiece remains fixed, but the immediate vicinity of the workpiece is released. In other words, punching piston and holder are adjusted to each other on the upper tool to stop the punching piston from the workpiece and at the same time to fix the workpiece with the holder.

Also, the counter tool can be automatically turned off after punching the opening of the workpiece to release space for the delivery of the final treatment unit. In other words, the counter tool is adjusted horizontally and / or vertically after punching, so that the workpiece is released from the counter tool. All of these steps can be performed as long as the workpiece is fixed by the holder to the punching end treatment unit, so that the opening made in the workpiece remains fixed for all further processing steps and, in particular, the position of the punching finishing unit is known does not need to be redetermined for further processing steps.

The workpiece is preferably brought with a robot automatically to the punching end treatment unit for processing. Advantageously, the holder of the punching end treatment unit in this case cooperate with the robot, so that the robot arm exerts the counterforce to the hold-down force of the holder and thus overall retains the workpiece in its position on the punching end treatment unit.

The machining tool is preferably C-shaped, wherein the upper tool is connected to the lower tool via a connecting web.

After the punching operation by the punching unit, the finishing unit is attached to the workpiece to finish the opening. The finishing is also carried out as long as the workpiece is fixed by the holder, so that the position of the opening is not changed or at most slightly changed and the accuracy in finishing is significantly improved.

The end treatment unit may attach a workpiece to be attached to the workpiece at the final treatment on the workpiece. The component to be attached can be, for example, a sealing ring, a holder for attachments such as a sensor or a headlamp washing nozzle or, more generally, components to be introduced in the opening. Accordingly, the component can, for example, also be a plastic holder for a sensor to be attached to a plastic bumper of a motor vehicle.

After the punching of the opening, the finishing unit can be made in particular by means of an adjustable finishing unit drive to the punched-out opening of the workpiece. In other words, the end treatment unit can be driven, for example with a linear actuator pneumatically, hydraulically or servo-motor driven to the punched-out opening of the workpiece. The adjustable finishing unit drive can thus be so be designed so that it allows only a linear deflection direction, namely stopping the workpiece or off the workpiece, since the position of the opening is fixed and thus the end position for the set by means of the adjustable finishing unit drive end treatment unit is already fixed. In an advantageous manner, a particularly simple or cost-effective construction of the final treatment unit can thereby be achieved without the position of the opening having to be newly determined before the final treatment.

The end treatment unit may be designed to join the punched-out opening, so that the component is fastened to or in the opening, for example by means of a welding process or a gluing process. For example, in the case of a workpiece made of plastic such as a bumper for a motor vehicle, the finishing unit may perform in the opening of the workpiece an automated plastic welding method or an automated gluing method to fix the component to the opening.

The machining tool of the punching end treatment unit is preferably designed for machining workpieces made of plastic, this particularly relates to the configuration of the punching piston and the holder.

The stamping end treatment unit further advantageously comprises a rotary unit with the first and a second tool holder for mounting two machining tools on the stamping end treatment unit. The rotary unit in this case has a vertical axis of rotation, wherein the first processing tool facing the workpiece and the second processing tool facing away from the workpiece, and wherein the two processing tools can be replaced by rotation of the rotary unit with respect to their place and function. Namely, the first machining tool is that with which the workpiece is machined. The second machining tool is in a rest position or can easily be exchanged during the machining that takes place by the first machining tool. The processing tools are therefore preferably arranged opposite to each other.

During the processing of the workpiece with the final treatment unit, the component is particularly preferably also to be attached to the workpiece at the same time. For automated introduction of the component to the workpiece, two alternatives have emerged, which is selected depending on component characteristics, workpiece nature and / or the joining technique (for example gluing or welding). In the first alternative, the component is arranged on the machining tool before the end treatment and is brought to the workpiece together with the machining tool. The component is here after completion of the punching process either mounted directly on the workpiece or performed by the final treatment unit for attachment to the workpiece. In this case, the component is preferably already attached to the end treatment unit of the machining tool, so that the component can be fastened relatively firmly to the final treatment unit and is only released from the final treatment unit at or in the opening of the workpiece. It is advantageous in this variant that the component is not first picked up by the final treatment unit during the machining process of the workpiece but can be guided to the workpiece more reliably.

In this variant, the machining tool consumes by attaching the component to the workpiece, so that for each new opening, in particular for each opening to be attached to the same workpiece, a new machining tool is attached to the punching end treatment unit. The end treatment unit preferably comprises a component storage holder with which a plurality of components can be stored and successively installed or consumed.

In this case, as in any other variant of the stamping end treatment unit, the machining tool can be replaced automatically by means of a loading unit. Advantageously, a plurality of processing tools, which can be changed quickly and automatically by means of the rotary unit, can therefore already be available in stock in the assembly unit. This is particularly advantageous that, in particular with different components and / or different openings to be punched, wherein in any case the punching tool is to be exchanged during the machining of a workpiece, in each case the matching component is guided to the workpiece. This variant is therefore particularly suitable for workpieces in which only a few identical openings are to be attached, so that the machining tool is to be changed while the respective matching components can be carried.

In a second variant, the component is arranged on the workpiece carrier before the final treatment, so that the component can be picked up by the end-treatment unit after completion of the stamping operation and brought to the workpiece. In other words, the component is attached to the workpiece carrier together with the workpiece prior to machining, and the workpiece and component are brought together by a robot to the punching finishing unit, the component being received by the finishing unit for insertion into the workpiece Workpiece is fixed to the holder. In this variant, it is advantageous that the processing tools can process a plurality of openings when a plurality of components are in stock on the workpiece carrier, so that the processing tools can already automatically process, for example, an entire workpiece.

In a particularly preferred embodiment, components are stored both on the machining tool and on the workpiece carrier, according to a combination of the two aforementioned variants. In the combined storage both on the machine tool and on the workpiece carrier the highest possible flexibility in terms of component selection and the joining process is obtainable, so that different joining techniques and various components can be attached to the workpiece in one step.

The punching end treatment unit is preferably arranged in a punching cell. A punching cell is a closed in consideration of security precautions space in which at the same time a robot arm for positioning and moving the workpiece is arranged. Feeding of workpieces and / or machining tools can be achieved via defined feed points, which can also be operated from outside the punching cell if necessary.

In the method for the automated processing of workpieces in a punching cell, a workpiece is first clamped onto a workpiece carrier at a clamping station. Preferably, the clamped workpiece can be received at the mounting station. In other words, the clamped workpiece for the following processing in the punching cell is held at an input position, so that it can be picked up directly by the robot and fed to the punching end treatment unit. The clamping station is thus arranged so that it can be reached by the robot, so that the workpiece can be automatically recorded. The clamping station can optionally be filled automatically within the punching cell with the clamped workpiece, but the clamping station can also be filled from the outside, for example manually, with a workpiece.

The clamped workpiece is then picked up from the chuck station by the robot, in particular a robotic arm, and fed to the combined stamping finishing unit. Preferably, the stamping end treatment unit is arranged opposite to the storage position.

The clamped workpiece is deposited on the machining tool, ie in particular on a counter tool of the machining tool, and is fixed by a holder. Thereafter, a punching piston of the machining tool approaches the opening to punch out the opening from the workpiece. In other words, a first opening with an upper tool of the machining tool is punched out of the workpiece.

The counter tool is parked after the punching of the workpiece, so that a free space is created at the opening. An end treatment unit of the machining tool is now attached to the workpiece to finish the opening. In particular, a component is attached to the punched-out opening of the workpiece by means of the finishing unit. The salaried holder serves as a counter-pressure bearing during the joining process.

Finally, after the finishing operation, the finishing unit is stopped from the workpiece and the workpiece is stopped at an end position by the robot arm.

Preferably, more than one opening is to be attached to the workpiece. In this case, after attaching and finishing the first opening, the workpiece is repositioned in a different position on the lower tool so that, in repetition of the previous steps, further openings can be punched and / or finished on the same workpiece.

In the following the invention will be explained in more detail by means of embodiments and with reference to the figures, wherein the same and similar elements are partially provided with the same reference numerals and the features of the various embodiments can be combined.

Brief description of the figures

Show it:

1 a sketchy side view of a punching end treatment unit according to the invention,

2 a perspective view of a machining tool,

3 a detailed perspective view of a machining tool used in a punching end treatment unit,

4 a sketchy side view of a punching end treatment unit with rotary unit,

5 a punching cell with punching finishing unit and robot,

6 a perspective view of a punching end treatment unit with workpiece,

7 a sketchy side view of a punching finishing unit with workpiece,

8th a perspective view of a punching finishing unit with workpiece and punched hole,

9 perspective view of a punching cell,

10 shows a detailed view of a punching end treatment unit with a machining tool.

Detailed description of the figures

1 shows a sectional view from one side of the punching end treatment unit 10 for the sake of clarity, only the upper part of the punching finishing unit 10 is shown, which is also the tool holder 16 having. The introduction of force, for example, the punching forces of the tool holder 16 is from the first carrier 12 as well as from the second carrier 13 the punching finishing unit 10 in the punching finishing unit 10 directed. By means of the first carrier 12 arranged first tool holder 17 and the second carrier 13 arranged second tool holder 18 is the editing tool 20 in the tool holder 16 the punching finishing unit 10 fixed.

The editing tool 20 has for machining a workpiece (see, for example 7 ) a punching unit 21 with an upper tool 22 which is a punching piston 30 includes, as well as with a punch piston actuator 31 for adjusting the punching piston 30 on. In the illustration shown, the punching piston moves 30 of the upper tool 22 thus by feed force of the punching piston actuator 31 driven vertically down to a workpiece 40 ( 6 to 9 ). The feed force of the punching piston actuator 31 can be generated pneumatically, hydraulically or by servo motor. Opposite to the upper tool 22 is the counter-tool 24 arranged on which the workpiece 40 rests and the counter bearing to the punching piston 30 forms the punching force of the punching piston 30 against injury. The upper tool 22 the punching unit 21 is thus in the embodiment of 1 in the starting position. upper tool 22 and counter tool 26 preferably perform their Zueinanderbewegung along a punch axis, through the punching piston 30 of the upper tool 22 as well as the counter tool 26 goes.

The component store holder 26 keeps components 70 for mounting in the opening 48 of the workpiece 40 before and is also in the starting position in the illustration shown. It is located at the bottom of the editing tool 20 below the counter tool 24 , In a particular embodiment, it may also by means of the Bauteilvorratshalteraktuators 32 in the direction of the owner 24 be driven to that of the holder 23 , in the case shown a hold-down 23 in the punching finishing unit 10 fixed workpiece 40 to be hired. The component reservoir actuator 32 can be a linear actuator with pneumatic, hydraulic or servo-motor drive, in the case shown it is a pneumatic drive 32 ,

The finishing tool 28 is a joining tool in the embodiment shown 28 for gluing or welding and is located in the illustration shown next to the component storage holder 26 It is also in a starting position. Also the final treatment unit 28 can by final treatment unit actuator 33 , in the present case a pneumatic linear drive 33 , to the workpiece 40 be employed. In the embodiment shown, component storage holders are merely for the purpose of depicting 26 and finishing unit 28 In the working direction, however, one behind the other, preferred is a juxtaposition, so that both component storage 26 as well as final treatment unit 28 in a vertical plane with the upper tool 22 stand.

Component supply holder 26 and finishing unit 28 are by means of a carrier 27 laterally on the connecting web of the machining tool 20 attached, screwed in this case. The carrier 27 is on both sides of the editing tool 20 executed and stands laterally wider than the second carrier 13 the punching finishing unit 10 so that the second carrier 13 during insertion of the machining tool 20 in the tool holder 16 the punching finishing unit 10 between the two arms of the wearer 27 into slides. In other words, the carrier encloses 27 the second carrier 13 the punching finishing unit 10 in the inserted position of the machining tool 20 ,

The air gap 25 between upper tool 22 and counter tool 24 provides space for inserting the workpiece 40 ,

2 shows a perspective view of a machining tool 20 with numerous design details. The upper tool 22 with punching piston 30 is also in this position in the starting position. The counter tool 24 In this embodiment, it comprises the center in the lower area of the counter-tool 24 a shoe 19 so that the counter-tool 24 to different Surface shapes of the workpiece 40 is customizable by the surface of the counter tool 24 tiltable and / or pivotable. In addition, the shoe is 19 of the counter tool 24 horizontally adjustable in this embodiment. Generally, the counter tool 24 horizontally and / or vertically adjustable to from the workpiece 40 to be able to turn off, leaving the area just below the punched opening 48 of the workpiece is kept free. In other words, the counter tool 24 Perform a combined vertical and horizontal movement, for example, even with complex shapes of the workpiece 40 to dive sideways under an edge, such as a bumper. The drive for the movement of the counter tool 24 can be pneumatic, hydraulic and / or servomotor.

Component supply holder 26 and the finishing unit 28 are below the counter tool 24 in the respective starting position and can by the drives 32 . 33 individually delivered.

3 shows a detailed view of the in the punching end treatment unit 10 used machining tool 20 , The upper tool 22 is like the final treatment unit 28 in the respective starting position. The shoe 19 with the counter tool 24 is horizontal and vertical from the punch axis 34 postponed. In other words, it's the counter-tool 24 preparing from the punching area, in particular from the punch axis 34 , moved to the area for hiring the final treatment unit 28 by means of the final treatment unit actuator 33 to the workpiece 40 kept clear.

4 shows a side view of a punching end treatment unit 10 with a turntable 11 , which with a first editing tool 20 and a second machining tool 20 ' equipped. The punching finishing unit 10 indicates the reception of the first and second machining tools 20 . 20 ' two tool holders 16 . 16 ' on. The second editing tool 20 ' can while editing with the first editing tool 20 with another editing tool 20 '' be exchanged, for example if a different opening 48 in the workpiece 40 is to bring or if the editing tool 20 / 20 ' has consumed.

5 shows a side view of a part of a punching cell 60 with a punching finishing unit 10 a robot arm 50 and a workpiece 40 which is on a workpiece carrier 42 is attached. In the workpiece shown 40 it is a plastic bumper 40 , The workpiece 40 is from the robot arm 50 held around by the punching finishing unit 10 led away or the punching finishing unit 10 to be fed. The stock, not in the stamping finishing unit 10 used machining tool 20 '' is located on an assembly unit 62 which the editing tools 20 '' in the blade axis to bring this to the punching finishing unit 10 add or remove.

6 shows another view of the punching end treatment unit 10 in the embodiment with a rotary unit 11 , where the robot arm 50 the workpiece 40 to the gap 25 of the machining tool 20 approach leads. In the background is another embodiment of the assembly unit 62 shown.

7 sketchily shows that in the gap 25 of the machining tool 20 introduced workpiece 40 , which due to the special design of the punching final treatment unit 10 relatively freely can be used so that a punching of even at difficult located openings 48 of the workpiece 40 is possible. The punching piston 30 of the upper tool 22 is in the illustrated embodiment in starting position.

8th shows one in the gap 25 of the machining tool 20 incorporated workpiece 40 where an opening 48 by means of the punching piston 30 of the upper tool 22 into the workpiece 40 was punched.

9 finally shows a perspective view of a punching cell 60 with a punching finishing unit 10 and a robotic arm 50 , being a workpiece 40 from the robot arm 50 in the punching finishing unit 10 is held. The opening 48 of the workpiece 40 is in the punching finishing unit 10 final treatment.

10 shows in the punching finishing unit 10 used machining tool 20 with a punching unit 21 with punching piston 30 , Punching piston actuator 31 and holder 23 , The holder is with springs 29 on the upper tool 22 attached. The punching piston 30 can by means of the punching piston actuator 31 be driven down, so that punching piston 30 and holder 23 are movable to each other. For the punching process, the upper tool is attached to the workpiece 40 hired, whereupon the holder 23 is applied. Now the punching piston 30 continue to the workpiece 40 hired around the opening 48 from the workpiece 40 punch. The punching piston 30 gets from the workpiece 40 turned off and placed in a starting position. The holder 23 can still work on the workpiece 40 abut and the workpiece 40 fix. The punching piston 30 is protected by a shock protection ring 35 hidden in the retracted state, so that unintentional injuries can be avoided.

It will be apparent to those skilled in the art that the above-described embodiments are to be understood by way of example, and that the invention is not limited to them, but that they can be varied in many ways without departing from the invention. Furthermore, it will be understood that the features, independently as they are disclosed in the specification, claims, figures, or otherwise, also individually define essential components of the invention, even if described together with other features.

LIST OF REFERENCE NUMBERS

10

Punching finishing unit

11

rotary unit

12

first carrier

13

second carrier

16

tool holder

17

first tool holder

18

second tool holder

19

shoe

20

Machining tool / first machining tool

20 '

second processing tool

20 ''

another editing tool

21

punching unit

22

upper tool

23

holder

24

counter-tool

25

gap

26

Component supply holder

27

carrier

28

final treatment

29

feather

30

punches

31

Stanzkolbenaktuator

32

Bauteilvorratshalteraktuator

33

Endbehandlungseinheitsaktuator

34

punching axis

35

Berührschutzring

40

workpiece

42

Workpiece carrier

48

opening

50

robot

60

punching cell

62

placement unit

64

Clamping station

70

component

Claims (18)

Punching end treatment unit ( 10 ) for machining workpieces ( 40 ) in a punching cell ( 60 ), comprising: at least one tool holder ( 16 ) for exchangeable recording of a machining tool ( 20 . 20 ' . 20 '' ) for processing the workpieces ( 40 ), the machining tool ( 20 . 20 ' . 20 '' ) a punching unit ( 21 ) with a holder ( 23 ) and a finishing unit ( 28 ), wherein the holder ( 23 ) the workpiece ( 40 ) at the punching end treatment unit ( 10 ), wherein the punching unit ( 21 ) an opening ( 48 ) in the workpiece ( 40 ) punches as long as the workpiece ( 40 ) of the holder ( 23 ), the final treatment unit ( 28 ) to the workpiece ( 40 ) is employed as long as the workpiece ( 40 ) of the holder ( 23 ) and the final treatment unit ( 28 ) the opening ( 48 ) finished. Punching end treatment unit ( 10 ) according to the preceding claim, wherein the final treatment unit ( 28 ) at the end treatment on the workpiece ( 40 ) component to be attached ( 70 ) attached to the workpiece. Punching end treatment unit ( 10 ) according to one of the preceding claims, wherein the punching unit ( 21 ) an upper tool ( 22 ) with a punching piston ( 30 ) and a counter tool ( 24 ), wherein the upper tool ( 22 ) for punching the opening ( 48 ) from above along a punch axis ( 34 ) to the workpiece ( 40 ) and the upper tool ( 22 ) after punching the opening ( 48 ) automatically returns to a basic position. Punching end treatment unit ( 10 ) according to the preceding claim, wherein the counter-tool ( 24 ) after punching the opening ( 48 ) automatically from the workpiece ( 40 ) to accommodate the delivery of the final treatment unit ( 28 ), as long as the workpiece ( 40 ) through the holder ( 23 ) is fixed to the punching end treatment unit. Punching end treatment unit ( 10 ) according to any one of the preceding claims, wherein the finishing unit ( 28 ) after punching the opening ( 48 ) by means of a finishing unit actuator ( 33 ) is made to the punched-out opening of the workpiece. Punching end treatment unit according to one of the preceding claims, wherein the finishing unit ( 28 ) for joining, in particular for welding or gluing, is designed for fastening the component ( 70 ) at or in the opening ( 48 ) of the workpiece ( 40 ). Punching end treatment unit ( 10 ) according to any one of the preceding claims, wherein the component ( 70 ) a plastic holder for a on the workpiece ( 40 ) to be attached sensor or a holder for a headlamp washing nozzle is and / or the machining tool ( 20 ) for machining workpieces ( 40 ) is formed of plastic. Punching end treatment unit ( 10 ) according to any one of the preceding claims, further comprising a rotary unit ( 11 ) with the first and a second tool holder ( 16 . 16 ' ) for mounting two processing tools ( 20 . 20 ' ) at the punching end treatment unit, the processing tools ( 20 . 20 ' ) are arranged opposite to each other, wherein the workpiece ( 40 ) with the first processing tool ( 20 ), the second processing tool ( 20 ' ) during the machining of the workpiece ( 40 ) can be replaced. Punching end treatment unit ( 10 ) according to the preceding claim, wherein the component ( 70 ) before the final treatment on the machining tool ( 20 ) and for the final treatment to the workpiece ( 40 ), so that the processing tool ( 20 ) by attaching the component ( 70 ) on the workpiece ( 40 ) and for each of the workpiece ( 40 ) opening ( 48 ) a new editing tool ( 20 ' . 20 '' ) at the punching end treatment unit ( 10 ) is attached. Punching end treatment unit ( 10 ) according to one of the preceding claims, wherein the machining tool ( 20 ' ) is replaced automatically by means of a loading unit. Punching end treatment unit ( 10 ) according to one of claims 1 to 9, wherein the component ( 70 ) before the final treatment at the final treatment unit ( 28 ) and automated by the finishing unit to the workpiece ( 40 ) for the final treatment. Punching end treatment unit ( 10 ) according to one of claims 1 to 9, wherein the component ( 70 ) before the final treatment on the workpiece carrier ( 42 ) and automated to the workpiece ( 40 ) for the final treatment. Punching end treatment unit ( 10 ) according to any one of the preceding claims, wherein the holder ( 23 ) is a hold-down. Punch cell ( 60 ) with a punching end treatment unit ( 10 ) according to any one of the preceding claims. Editing tool ( 20 . 20 ' . 20 '' ) for a punching finishing unit ( 10 ) for machining workpieces ( 40 ) in a punching cell ( 60 ) comprising: a holder ( 23 ) for fixing the workpiece ( 40 ) at the punching end treatment unit ( 10 ), a punching unit ( 21 ) for punching openings ( 48 ) in the factory piece ( 40 ), as long as the workpiece is removed from the holder ( 23 ), a finishing unit ( 28 ) for engagement with the workpiece ( 40 ) and finishing the workpiece in the same. Method for the automated machining of workpieces ( 40 ) in a punching cell ( 60 ) with the steps: clamping a workpiece ( 40 ) on a workpiece carrier ( 42 ) and placing the clamped workpiece on a clamping station ( 64 ), Picking up the clamped workpiece ( 40 ) from the clamping station ( 64 ) by a robot ( 50 ), Feeding the clamped workpiece ( 40 ) with the robot ( 50 ) to a punching finishing unit ( 10 ), wherein the punching finishing unit ( 10 ) at least one processing tool ( 20 . 20 ' . 20 '' ) for machining the workpiece, depositing the clamped workpiece ( 40 ) on a counter tool ( 24 ) of the machining tool ( 20 . 20 ' . 20 '' ), Fixing the workpiece ( 40 ) with a holder ( 23 ) of the machining tool ( 20 . 20 ' . 20 '' ), Punching a first opening ( 48 ) from the workpiece with an upper tool ( 22 ) of the machining tool ( 20 . 20 ' . 20 '' ), Parking the counter tool ( 24 ), Delivery of a finishing unit ( 28 ) of the machining tool ( 20 . 20 ' . 20 '' ) to the workpiece ( 40 ), Attaching a component ( 70 ) at the opening ( 48 ) of the workpiece ( 40 ), Stopping the editing tool ( 20 . 20 ' . 20 '' ) of the workpiece, placing the workpiece on the clamping station ( 64 ) by the robot ( 50 ). Method according to the preceding claim, wherein after the attachment and finishing of the first opening ( 48 ) the workpiece ( 40 ) in another position on the counter tool ( 24 ) is positioned for the attachment and finishing of further openings ( 48 ) on the same workpiece ( 40 ). Method according to the preceding claim, wherein the punching end treatment unit ( 10 ) a turntable ( 11 ), wherein the punching end treatment unit ( 10 ) a second releasably attached machining tool ( 20 ' . 20 '' ), with which the workpiece ( 40 ) can be processed alternately so the editing tools ( 20 . 20 ' . 20 '' ) are rotatably interchangeable.

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