WO2015010704A1

WO2015010704A1 - System for managing tools of a production system having at least one stamping/forming machine, production system, and method for operating a production system

Info

Publication number: WO2015010704A1
Application number: PCT/EP2013/002181
Authority: WO
Inventors: Stefan Büttner; Wolfgang Laib
Original assignee: Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Priority date: 2013-07-23
Filing date: 2013-07-23
Publication date: 2015-01-29

Abstract

The invention relates to a system for managing tools of a production system (20), which production system comprises: one or more stamping/forming machines (1), which each have at least one tool magazine (2); a plurality of stamping/forming tools (9), which can each be individually installed in the tool magazine (2) or the tool magazines (2); and optionally a plurality of tool carriages (22), each for transporting at least some of the tools (9) to the stamping/forming machine or the stamping/forming machines (1). The tools (9) and/or tool carriages (22) are categorised by in particular coloured markings (8, 14, 27). The stamping/forming machines (1) are each provided with a marking (8), by means of which tools (9) and/or tool carriages (22) are associated with one of the stamping/forming machines (1). The invention further relates to an indicating device (30) that indicates the location of a removed tool (9).

Description

System for tool management of a finishing plant with at least one punching machine

Forming machine, manufacturing plant and method for operating a

The invention relates to a system for tool management of a production line with one or more punching / forming machines, which each have at least one tool magazine, and with a plurality of punching / forming tools, which can be prepared individually in the tool magazine or tool magazines , Optionally, the manufacturing facility may additionally be equipped with a plurality of tool carriages for transporting at least each of the tools to the punching / forming machine (s). Furthermore, the invention relates to a production plant with such a system for tool management and a method for operating the production plant. In general, in a manufacturing plant with one or more punching / forming machines a variety of different tools from and to

Machines are transported. Depending on which tools in the

Once the next job has been processed on a single punching / forming machine, it must be ensured that these are prepared in the tool magazine of the punching / forming machine before the start of processing. Often, some of the tools needed for the previous job may remain in the tool magazine while others need to be replaced. Since the machine stands still during setup, it is of great importance for the productivity of the production equipment that the set-up process, including the finding of the required tools, is carried out as quickly and smoothly as possible.

To make matters worse, tools have to be serviced occasionally and are not available for maintenance during maintenance. It must also be avoided that one and the same tool is needed simultaneously on different machines.

The complex requirements for optimal tool management is in practice e.g. EDP supported tool management systems. But even such management systems do not always provide optimal results and also bring a considerable administrative burden.

EP 1 172 718 B1 describes a system and method for the identification of tools and / or tool parts of a punching machine by means of a

Detecting device which reads out barcodes attached to the tools or the tool parts. The automatic identification of the individual tool on a single punching machine can certainly make an important contribution to the smooth operation of a production line. Lots

Problems due to the complexity of the requirements in a manufacturing plant, especially with multiple punching / forming machines and a variety of different tools, are not solved by this system alone.

Based on the prior art, the invention has set itself the task of facilitating the tool organization in a manufacturing plant. The object is achieved by a manufacturing plant with the features of claims 1 or 10 and by a method for operating a

Production plant with the features of claim 12.

According to the invention, at least some of the tools each have a marking, by which they are categorized according to at least one criterion. A particular benefit of the invention results in that the operating personnel can interpret the marking visually without a detection device. The invention is based on the finding that for a simplified

Tool organization, the identification of the individual tool may indeed be helpful, but above all an easily recognizable categorization of tools according to at least one criterion simplifies the management. For example, emerging bottlenecks are much easier to detect without having to consult a computerized management system. An intuitive control of the organizational processes by the operating personnel is made possible.

In general, the use of tool trolleys in a manufacturing facility can facilitate the provision and transportation of tools. such

Tool trolleys comprise several tool storage spaces. On them, for example, the tools to be loaded for the next job can already be transported to the machine, while the previous job is still being processed on this machine. Alternatively or additionally to the marking of at least one part of the tools, some of the tool carriages each have a marking, by which they are categorized according to at least one criterion. Also in this case, the marking is not or at least not only the identification of the individual tool trolley, but serves a division of the tool carriage in

different categories of at least one criterion. It is understood that the identification of the tool cart relates in particular to a categorization or grouping of the tools which are to be arranged on this tool cart or are already arranged. Both the identification of the tools according to the invention and the identification of the tool trolleys according to the invention bring about a categorization and thus a grouping of the tools or tool trolleys. If bottlenecks occur in a category or group, they can be easily recognized by the operating personnel. Remedies can be taken early. Elaborate tool management systems may be omitted, may not be involved in all operations or are at least optimally supplemented. For example, possibly

Printing out of set-up plans is no longer necessary because the categorizing or grouping marking allows an assignment with sufficient certainty.

The markings are - as already mentioned - designed so that they are to be understood visually for the operating personnel without detection device. In this respect, therefore, it is not about labeling by means of a bar code, an RFID tag, etc., although the markings according to the invention can be supplemented by such.

According to a further aspect of the invention, at least some of the punching / forming machines each have an identification by means of which tools and / or tool carriages are assigned to one of the punching / forming machines. These markings are designed in such a way that they are to be understood visually for the operating personnel without detection device.

The individual tools or tool trolleys do not necessarily have a corresponding or corresponding marking in order to prevent them

Assign marked machines. For example, the

Identification of the individual machines can also be found on the printout of a set-up plan, which is attached to an order-related combination of tools or a tool trolley.

Preferably, however, at least some of the tools and / or the tool trolley are individually provided with a corresponding identification, so that an assignment by the operating personnel is made possible without further aids. In an advantageous embodiment of the invention is carried out by the

Markings on at least some of the tools and / or the

Tool trolley a categorization according to the criterion "machine allocation" In this case, the production plant has several punching / forming machines.

Due to the individual marking, the tool or the tool carriage for the operating personnel without detecting device is recognizably assigned to one of the machines. If the punching / forming machines also have a corresponding marking, this aspect corresponds to the above

machine-related aspect of the invention.

In an advantageous embodiment of the invention is carried out by the

Markings on at least some of the tools a categorization at least according to the criterion "property of a workpiece suitable for processing." In particular, the workpiece property is the workpiece thickness Cutting tools determine, for example, the resulting cutting gap between the cutting punch and the die for which the tool thickness is suitable The markings make the individual tools, depending on the cutting gap or the like, for example, according to categories of workpiece thicknesses, such as 1 mm, 2 mm , 3 mm, divided.

In the case of a preferred embodiment of the invention, the marking of a categorization takes place at least according to the criterion of "order-related

All tools to be prepared for a forthcoming machining process on a punching / forming machine (except those that may already be on the machine) are identified uniformly or put together on a correspondingly marked tool trolley For example, to create a thread forming, first a tool for inserting a

Round hole, then a tool for forming a passage and finally a thread forming tool needed. In a preferred variant of the invention The identifications of the tools and / or the tool trolleys are used to divide the tools at least according to the criterion "processing sequence-related tool affiliation." According to a further preferred variant of the invention, the categorization of the tools takes place at least according to the criterion "tool type". In particular, at least cutting, forming, thread forming, marking and rolling tools are available as different types of tools for a punching / forming machine. Another criterion according to which, in an advantageous development of the invention, a categorization of the tools takes place is the criterion

In a particularly preferred variant, the marking of the tools and / or the tool trolley for categorization is at least used according to the criterion "set-up time in the tool magazine". Also this criterion is in particular the expected or usual setup time in the tool magazine. In particular, there are some tools that are needed almost for each job and therefore (except for maintenance) usually not from the

Tool magazine are removed. Such standard tools can carry a different marking than tools that are usually equipped only order-related (additional tools). Thanks to this measure z. B. in the maintenance of a standard tool, the special urgency of

Operating personnel are readily recognized.

Similarly, a variant of the invention is advantageous in which a

Categorization according to the criterion "stock / requirement ratio of the tool type." In this context, the term "tool type" refers to the specific design of the individual tool.Two tools therefore have only the same type, if they are essentially identical and therefore suitable for exactly the same machining task Some tool types are relatively expensive, which is why only as many tools as absolutely necessary are purchased from this type of tool Bottleneck tools are called. For example, the categorization according to the criterion "stock / requirement ratio of the tool type" can be used to enable a simple distinction between bottleneck tools and non-bottleneck tools, which can ensure a quick location of the bottleneck tools.

As an alternative or in addition, the categorization according to the Tool Type Supply / Demand Ratio criterion can also be used to distinguish backup tools from other tools.A backup tool is a tool that is only needed if another tool fails. Thanks to this measure, as soon as a backup tool is in use, it immediately becomes clear to the operating personnel that action is required.

The same applies with regard to a marking of a tool carriage as a backup tool cart, since empty tool storage bins on this car also indicate need for action.

As already explained above, the markings are designed such that they can be interpreted by the operator without the use of additional detection devices (scanners o, ä.). For example, the identifiers may be in the form of simple numbers (eg, 1, 2, 3 ...), each number being associated with a category.

It is particularly advantageous if the markings as well as possible

Distinguished from each other and can be detected from a greater distance. Against this background, the use of different colors for assignment to different categories is of particular advantage. Color coding is well understood regardless of the language and level of training of the operator. In a particularly preferred embodiment, therefore, the markings of the tools and / or the tool carriage are at

different colored markings, whereby the different colors are each assigned to a category. Likewise, the marking of the punching / forming machines can be done using different colors. One of the machines is provided with a label which has a first color, e.g. B. red, has. A second machine is provided with a label having a second color, e.g. B. green, etc.

A particularly preferred variant of the invention results in the case of

Categorization of the tools and / or the tool trolleys by the colored markings according to the criterion "Machine affiliation" .The punching / forming machines are also provided with colored markings such that tools or tool trolleys are marked with the same color as the stamping / forming machine These variants can be supplemented by the aspect that some of the tools are

Markings with one or more colors that are not assigned to any machine. As a result, the tools marked in this way or the tools on the so-marked tool carriage z. B. identified as bottleneck tools and / or backup tools.

Against this background, a more general form results

Development of the invention, which is characterized in that at least some of the tools and / or the tool trolley a label

by which they are categorized according to several, in particular two or three criteria. According to the preferred example of the previous section, z. For example, a categorization according to the criteria

"Machine affiliation" and "Stock / requirement ratio of the tool type". Another preferred example is the categorization according to the criteria

"Machine affiliation" and "Setup duration in the tool magazine".

Preferably, at least some of the tools and / or the

Tool trolley on each a label on, by which they under

Using different colors are categorized according to at least two criteria. An intuitively easy-to-understand identification results in the categories of a first criterion different colors, the categories of a second

Criteria different brightness levels of different colors are assigned. In a preferred embodiment, the marked tools each have at least an upper, a lower tool part and a tool cartridge for holding the tool parts relative to each other.

Preferably, the markings are attached to their respective tool cartridge, whereby the markings are exposed to as little stress in the workpiece machining by means of the marked tool. In addition, they are clearly visible due to the attachment to the cassette. For example, the markings can be formed as colored sleeves, clips, etc., which surround at least one strip or strut of the tool cassette.

In the case of a preferred embodiment of the invention, at least some of the punching / forming machines are each provided with a marking which is positioned so that it is visible during operation from outside the working range of the punching / forming machine. In particular, the marking is preferably arranged on a control panel and / or on a machining head of the punching / forming machines. In a preferred variant, the markings are changeable.

In particular, the markings for this purpose are mainly to the

Tools and / or tool trolley releasably attached or removable.

Preference is given to constructive solutions in which the markings on the tools, tool trolleys and / or punching / forming machines are in the form of a single-color or multi-color color element, in particular a single-color or multi-color color plate.

It is particularly advantageous if the markings of the tools are visible even when equipped in the tool magazine tools from outside the machine work area, in particular from the control panel of the punching / forming are visible from machine. For this purpose, in the case of a preferred variant of the invention, both the design of the tool magazine, as well as the position of the marking on the tools designed accordingly. In the case of a further embodiment, some of the tools, the tool carriage and / or the punching / forming machines are each provided with a first marking and additionally each with a second marking. Preferably, the two markings are designed similarly. With the help of the first marking they are categorized according to a first criterion. The second label categorizes them according to another criterion.

For example, on the basis of the first and second identification, they are in each case one or more of the group of the criteria "machine affiliation", "property of a workpiece suitable for processing, in particular workpiece thickness", "order-related tool affiliation", "processing sequence-related tool affiliation", "tool type", " Tool usage frequency "," Setup duration in tool magazine "or" Stock / requirement ratio of tool type "grouped.

According to a further aspect, the invention relates to a tool management system of a production plant, in particular according to at least one of the preceding developments, with one or more punching / forming machines, each having at least one tool magazine, a plurality of punching / forming tools, each individually in the tool magazine or tool magazines can be upgraded and a tool storage device having a plurality of storage bins for at least some of the tools. To facilitate the tool management, a display device is provided on the tool storage device, by means of which at least one of

Bins the whereabouts of this storage space assigned and

removed tool can be displayed. In particular, it can be displayed on which punching / forming machine the removed tool is prepared. Thanks to this measure, removed tools are easy to find. Preferably, the

Display device designed such that the location for the

Operating personnel without detection device is visually recognizable. By a simple understanding and good visibility, a variant is characterized in which by means of the display device using different colors different possible whereabouts of this storage bin assigned and removed tool can be displayed by possible whereabouts, such as various punching forming machines, each one of used colors are assigned.

Preferably, the punching / forming machines are as described above

Designs, provided with corresponding colored markings. Preferably, the production plant with several tool trolley for

Transporting at least each of the tools to the or the punching / forming machines equipped, wherein the provided with the display device tool storage device is formed by one of the tool carriage. The method initially set by a method for

Operating a manufacturing plant, which is designed in particular according to at least one of the above aspects realized. In that sense will be

Tools, tool trolleys and / or punching / forming machines according to the preceding embodiments and / or a display device according to the preceding embodiments is used.

In the following the invention will be explained with reference to schematic drawings. 1 shows a punching / forming machine in a perspective view

FIG. 2: a tool cassette in a perspective view,

Figure 3: a highly schematic representation of a first example of a production plant and

Figure 4: a highly schematic representation of a second example of a manufacturing plant. Figure 1 shows a punching / forming machine 1 with a tool magazine 2 in the form of a conventional linear magazine. The machine 1 comprises a c-shaped machine frame 3, a workpiece table 4 and a control unit 5. On a cover 6 of a machining head 7, the machine 1 is provided with a colored machine marking 8. The machine marking 8 is shown as a cross, which is representative of a colored area with the color red. In particular, it is the machine marking 8 z. B. to a color chart. Alternatively or additionally, the machine identification 8 can also be arranged on a control console, not shown, of the machine 1.

In the tool magazine 2 more punching / forming tools 9 are prepared. As shown by way of example in FIG. 1 for a cutting tool 9 with a punch 10, a single tool 9 from the tool magazine 2 is loaded into the machining head 7 for workpiece machining. The individual tool 9 has in each case at least one upper, one lower tool part 11, 12 and a tool cassette 13. By way of example, the parts are based on the im

Tool magazine 2 outside right tool 9 provided with reference numerals. The tool cartridge 13 is used to hold the tool parts 11, 12 to each other, but remains when replacing a tool 9 and the upper and lower tool part 11, 12 in the machining head 7 in the tool magazine 2. In Figure 1, the tools 9 are only very schematically , A detailed view of the tool cartridge 13 is shown in Figure 2 and will be described in more detail later. In the case of the machine 1 shown in Figure 1 are all tools 9, in

Special all tool cartridges 13 of the tools 9 provided with a tool marking 14. Again, these are red colored areas, which should be represented by the cross used. As can be seen with reference to FIG. 1, the colored machine marking 8 and the colored tool markings 14 are from outside

Machine working area clearly visible and as z. B. red identification identifiable. On the one hand, this is due to the open design of the

Tool magazine 2. There are no obstacles z. B. no covers present, which obstruct the view of the tools 8. In addition, the good visibility of the tool marks 14 by their positioning results in a well visible location on the tool cartridge 13. The machine identification 8 and the tool marks 14 are for the

Visually recognize operating personnel without detection device.

As already mentioned, an example of a tool cassette 13 of a tool 9 is shown in detail in FIG. The upper and lower tool parts 11, 12 of the tool 9 are not shown in FIG. The tool cassette 13 has a base body 15, on which the tool 9 is fixed in the tool magazine 2, and various holding arms 16 for holding the tool parts 11, 12. The tool marking 14 is detachably attached to one of the main body 15 upwardly projecting strut 17 of the tool cartridge 13. In particular, the strut 17 also serves as a grip element during manual handling of the tool 9.

The marking 14 is as a colored plastic sleeve or as a colored

Plastic clip formed and surrounds the strut 17 at least partially. The color, here red, is again symbolized by a cross. Tool management systems using the machine and tool markings 8, 14 will be described below with reference to two

Examples of a manufacturing plant 20 explained, which is shown in highly schematic form in Figures 3 and 4. The production plant 20 according to FIG. 3 comprises a plurality of punching / forming machines 1, which each have at least one tool magazine 2. A working area 21 of the machines 1 is shown in each case very schematically as a rectangle. A plurality of punching / forming tools 9 can each be prepared individually in the tool magazines 2. For reasons of clarity, only a few are provided with a reference numeral.

Several tool carriages 22 serve to transport the tools 9 from the central device 23 to the various machines 1

Device 23 may, for example, a central tool storage, a central Setup station and / or a central device for repair or maintenance of the tools 9 be.

The tool carriages 22 are equipped with a plurality of tool storage spaces 24. Likewise, the central device 23 has a plurality of tool storage spaces 25 and the tool magazines are equipped with a plurality of setup stations 26. Out

For reasons of clarity, even in this case only individual of the squares 24, 25, 26 are provided with a reference numeral. The occupied with tools seats 24, 25, 26 are provided in Figure 3 (and in Figure 4) with a label, d. H. In these places a tool 9 is arranged, which has a corresponding

Tool marking 14 has. Empty tool places 24, 25, 26 are shown as empty circles.

Although this case is not shown for purposes of clarity in FIGS. 3 and 4, it should be understood that not necessarily all tools 9 must be provided with a tool tag 14.

The tools 9 are, for example, with a tool marking 14 according to the one shown in Figure 2, d. h with a colored plastic sleeve on the handle of the tool cartridge 13, provided. In addition to the tools 9 are also the

Tool carriage 22 provided with tool carriage markings 27. In addition, the central device 23 is provided with a facility mark 28 and the machines 1 are provided with machine markings 8. Preferably, all the markings 8, 14, 27, 28 are colored markings, in particular markings with clearly visible colored areas.

In the example shown, the cross is, as already explained, for a red

Marking, the single straight line for green, the double line for blue, the V-shaped marking for yellow and finally the single line for white. It results in an intuitively understandable and well-recognizable from a distance

Color coding. In any case, all markings 8, 14, 27, 28 are designed in such a way that they can be visually understood by operating personnel without a detection device. The three machines 1 are thus marked red, green and blue. The machine markings 8 are designed, for example, according to the variant shown in Figure 1 by means of a mounted on the punch head hood 6 color chart. The tool carriage 22 and the central device 23 may be characterized by a similar color chart.

1 shows that the tools 9 each have a marking 14, by which they are categorized at least according to the criterion "machine affiliation." Moreover, the tools 9 marked V (yellow) are, for example, a backup Tools 9 or around

Bottleneck tools 9. Accordingly, the tools 9 are categorized by the markings 14 according to at least two criteria, on the one hand according to the criterion "machine affiliation" and on the other hand according to the criterion "stock / requirement ratio of the tools".

In addition, the tool markings 14 are shown according to Figure 3 with different thickness lines. The different thickness lines stand for

Different brightness levels of the colored markings 14. Thick lines stand for dark colors, thin lines for light colors. The dark colors indicate the standard tools 9 of a machine 1. For example, the three tools are left in the tool magazine 2 of the top machine 1 in Figure 3 standard tools 9. They usually remain in the

Tool magazine 2 and are removed only for maintenance purposes. The tools 9 with light-colored markings 14 are

Additional tools that are equipped in the tool magazine 2 according to the order. Consequently, the tools 9 are additionally categorized according to the criterion "setup time".

Three of the tool carriages 22 are provided with marks 27 corresponding to the machine marks 8 (red, green, blue). They are thus categorized according to the criterion "machine affiliation" of the tools 9 mounted on them, In addition, a fourth tool carriage 22 has a yellow one

Marking 27, which indicates that there arranged Tools 9 are backup or bottleneck tools. The tool trolleys 22 are therefore also grouped according to the criterion "stock / requirement ratio".

The fourth tool carriage 22 (FIG. 3 at the bottom) is also an example of a tool storage device with a display device 30. By means of

Display device 30 is at the storage bins 24 of the residence of

Tool 9, which was assigned to this storage bin 24, but was removed from it. In the present case, by means of a colored

Display element 31 displayed in the form of a color chart that the removed tool 9 is located on the marked with a double line (blue) machine 1. In addition, according to the display device 30, the other removed tool 9 is located in the central device 23.

In the central device 23 there is a backup tool 9 (V-shaped marking) and a standard tool 9 (cross with thick lines) as the tool marks 14. The presented situation clarifies the advantages of the categorizing markings. The operator can easily recognize only by the color, that with the

Backup tool 9 and the standard tool 9 two tools 9 in the central device 23, z. B. for maintenance, which should be treated with high priority. Additional tools 9 generally do not need to be treated with the same priority.

In addition, the operating staff will be provided with a double line

Machine 1 (Figure 3 bottom) easily recognize that a backup tool is equipped. So there may be a need for action, because normally no

Backup tool should be needed.

In the following, a second example of a tool management system or a production plant 20 will be explained with reference to FIG. The production plant 20 comprises a punching / forming machine 1, a tool carriage 22, a central device 23 in the form of a tool store (bottom left) and a central

Device 23 for repairing the tools 9 (bottom right). The illustrated Markings 8, 14, 28 are designed in accordance with the previously described markings 8, 14, 28.

3, in the case of this production facility 20, the tools are categorized according to the criterion "tool type." For example, tools 9 marked with a cross (red) are categorized

Cutting tools, tools marked with a simple line (green) Forming tools and tools marked with a double line (blue) Rolling tools.

The tool carriage 22 is not marked by way of example. The central

Tool bearing 23 in turn has a display device 30 which comprises display elements 31 designed as color plates. The display elements 31 are placed after the removal of a tool 9 on the empty tool lagerpl atz 24. By their color, they indicate where the removed

Tool 9 is located.

It is understood that in alternative embodiments of the described

The tools 9 or tool carriage 22 can also be categorized or grouped according to one or more of the criteria "property of a workpiece suitable for machining, in particular workpiece thickness", "order-related tool affiliation", "machining sequence-related tool affiliation" and "tool usage frequency". In addition, some of the tools 9, the tool carriage 22 and / or the punching / forming machines 1 each have a first marking 8, 14, 27 and additionally each having a second marking, by which they are categorized according to another criterion. Respective second identifications 33, 34, 35 are indicated by way of example in FIGS. 1, 2 and 3.

Thanks to the described markings 8, 14, 27, 28 and display devices 30, a manufacturing plant 20 can be operated in an advantageous manner. The management of the tools 9 is simplified. Problems can be detected early. The administrative effort can be reduced.

Claims

claims

1. System for tool management of a manufacturing plant (20) with

- One or more punching / forming machines (1), each

have at least one tool magazine (2),

- A variety of punching / forming tools (9), respectively

individually in the tool magazine (2) or the tool magazines (2) can be prepared,

and optionally with a plurality of tool carriages (22) for transporting at least some of the tools (9) to the punching / forming machine (1), characterized in that at least some of the tools (9) and / or the tool carriage ( 22) each have a marking (14, 27), by which they are for

Operating personnel without detection device are visually recognizable categorized according to at least one criterion, and / or

that at least some of the punching / forming machines (1) each have a

Marking (8), by means of which tools (9) and / or

Tool cart (22), in particular by a corresponding

Marking (14, 17), for operating personnel without detection device visually recognizable assigned to one of the punching / forming machines (1).

2. System according to claim 1, characterized in that at least some of the tools (9) and / or the tool carriage (22) each have a

Marking (14, 27) by which they are categorized according to at least one of the following criteria:

- "machine affiliation", "Property of a workpiece suitable for machining,

in particular workpiece thickness ",

- "order-related tool togetherness",

- "processing-related tool togetherness",

- "tool type",

- "tool use frequency",

- "Setup time in tool magazine" and / or

- "Supply / demand ratio of the tool type".

System according to one of the preceding claims, characterized in that the categorization of the tools (9) or tool carriages (22) takes place by means of the markings (14, 27) in that the markings (14, 27) are different in color and in that the different colors each associated with a category of a criterion, and / or that the marking (8) of the punching / forming machines (1) is carried out using different colors.

System according to one of the preceding claims, characterized in that the tools (9) each have at least one upper, a lower tool part (11, 12) and a tool cassette (13) for holding the tool parts (11, 12) relative to each other, wherein the marking (14) of at least some of the tools (9) is preferably fastened to its respective tool cassette (13).

System according to one of the preceding claims, characterized in that at least some of the tools (9) and / or the tool carriage (22) have a marking (14, 27), by which they are categorized according to several criteria.

System according to one of the preceding claims, characterized in that at least some of the punching / forming machines (1) each have a marking for the assignment of tools (9) and / or tool carriage (22) at a visible position during operation, in particular at a control panel and or in the region of a machining head (7) of the punching / forming machines (1).

7. System according to any one of the preceding claims, characterized in that the markings (8, 14, 27) on the tools (9), tool carriage (22) and / or punching / forming machines (1) are detachably or replaceably mounted.

8. System according to any one of the preceding claims, characterized in that the markings (8, 14, 27) on the tools (9), tool carriage (22) and / or punching / forming machines (1) in the form of a single or multi-colored Color chart are formed.

9. System according to one of the preceding claims, characterized in that the markings (8, 14, 27) on the tools (9) from outside a working area (21) of the punching / forming machine (1) are visible when the tools ( 9) in the tool magazine (2) of the punching / forming machine (1) are equipped.

10. System according to any one of the preceding claims, characterized in that some of the tools (9), the tool carriage (22) and / or the punching / forming machines (1) each have a first marking (8, 14, 27) and additionally in each case a second identifier (33, 34, 35).

11.System, in particular according to one of the preceding claims, for

Tool management of a production plant (20) with

- One or more punching / forming machines (1), each having at least one tool magazine (2),

- A variety of punching / forming tools (9), respectively

a tool storage device (22, 23) which has a plurality of storage bins (24, 25) for at least some of the tools (9), characterized in that on the tool storage device (22, 23) a display device (30) is provided, by means of which at least one of the storage bins (24, 25) of the whereabouts of this storage space (24, 25) associated and

removed tool (9) can be displayed, in particular can be displayed on which punching / forming machine (1) the removed tool (9) is equipped. 12. System according to claim 11, characterized in that by means of

Display device (30) using different colors different possible whereabouts of this storage space (24, 25) associated and removed tool (9) can be displayed by each possible locations, such as various punching forming machines (1), each assigned one of the colors used are.

13. System according to one of claims 11 or 12, characterized in that it is the tool storage device to a tool carriage (22) for transporting at least each of some of the tools (9) to the or the punching / forming machines (1) ,

14. Production plant (20) with a system for tool management according to one of the preceding claims. 15. A method of operating a manufacturing facility (20) having a tool management system according to any one of claims 1 to 13, wherein

Markings (8, 14, 27) for tools (9), tool trolleys (22) and / or punching / forming machines (1) according to one of claims 1 to 10 and / or display means (30) for a tool storage device (22, 23) according to any of claims 11 to 13 are used.