DE102020205088A1 - Method and evaluation system for monitoring tool wear on tool components in machining production plants - Google Patents

Abstract

The invention relates to a method and an evaluation system for monitoring tool wear of tool components in machining production plants, as well as a production plant for the machining production of workpieces. It is provided that during ongoing operation of a machining production plant (26) measured values of at least two different measured variables the production plant (26) can be provided to an external evaluation system (10) with an analysis program (12). The evaluation system (10) with analysis program (12) is designed to derive a statement about a current physical state of the tool component (30) with regard to tool component wear based on an analysis of the at least two measured variables and, depending on this analysis, at least first information for one Provide the operator or a control of the manufacturing plant (26) and / or trigger at least one first control command on the manufacturing plant (26). In addition, a corresponding production system (26) for the machining production of workpieces (28) is presented.

Description

The invention relates to a method and an evaluation system for monitoring tool wear of tool components in machining production plants and a production plant for the machining production of workpieces.

In the manufacturing industry, it is important to achieve a consistently high quality of the manufactured products even with longer production lines. This also applies in particular when the tools to be used are exposed to certain wear processes due to the repetitive manufacturing processes.

The tools of metal-cutting production systems, such as lathes or milling machines, are subject to constant wear and tear and therefore have a limited service life, depending on the production process used.

With increasing wear, the quality of the cutting edge decreases, since material is removed from the cutting edge of the tool during the turning or milling process. Wear of the cutting edges, for example, reduces the diameter of a milling cutter, which leads to manufacturing inaccuracies if the degree of wear is not known and is readjusted on the milling machine.

In order to compensate for the loss of diameter of the milling cutter due to wear, workpieces are measured randomly and correction values are entered manually in the milling machine control based on the increasing dimensional deviations. In the case of automated measuring programs, the respective measurements are also carried out according to an actual production process.

These manual adjustments do not allow an objective statement about the condition or the degree of wear of the milling cutter, whereby a tool change is made according to different criteria and there are fluctuations in the number of workpieces produced with it for each tool used.

In addition, with frequent, early tool changes, in which the wear reserve of the tools has not been fully used, the tool costs increase accordingly.

Instead of carrying out a manual measurement or, in general, a subsequent measurement of the tool, which, for example, can also be carried out at least partially automatically by the production system, initial approaches are already known from practice, which monitor and analyze individual parameters on a production system during an active machining process Provide machining of a workpiece. For example, it is known to monitor performance parameters of a tool spindle. Approaches are also already known which use suitable sensor devices to detect vibrations occurring on the tool spindle, so that a statement about wear and tear on a milling tool is possible.

From the state of the art, first approaches can already be seen as known, which deal in the broadest sense with the topic discussed above.

So is from the pamphlet DE 10 2005 041 175 A1 a method for adaptive feed control on numerically controlled machine tools can be found as known. In particular, a method for adaptive feed regulation on numerically controlled machine tools is described. The machine tool is used for the machining of workpieces with a tool rotating on a spindle according to the specification of an NC program. The power consumed by the spindle (P _ist) is maintained by controlling a specified in the NC program for the movement between tool and workpiece feeding speed as constant as possible. The method for adaptive feed control is activated by a command of the NC program that initiates machining of the workpiece and is deactivated by a command of the NC program that ends machining of the workpiece.

From the pamphlet DE 10 2007 048 961 A1 a method for machining a workpiece with a machine tool can also be found as known. In particular, a method for machining a workpiece in a machine tool with a machining head and adjusting devices for adjusting the machining head to the workpiece on the tool side, in which state variables are detected on the tool side, is disclosed. At least one force in the Cartesian coordinate system, a torque (M) and an acceleration in the Cartesian coordinate system representing a vibration of the machining head are determined and analyzed as tool-side status variables on the machining head.

In order to meet increased demands for consistent quality in the future, it is desirable to come up with alternative solutions that provide even more precise statements in real time about the current state of Enable tool components of machining production systems.

The invention is based on the object of providing a method and an evaluation system for monitoring tool wear of tool components in machining production plants, with which a particularly precise indication of tool wear is possible during ongoing operation.

In a preferred embodiment of the invention it is provided that a method for monitoring tool wear of tool components in machining production plants is provided. Such a method comprises the following steps: Providing a machining production system with a production program, operating the production system with a production program, whereby during a rotating operating state of a tool component actively interacting with a workpiece to be processed from the production system, respective measured values of at least two and mutually different measured values of the Tool components are measured by the production system and provided to an external evaluation system coupled with the production system with an analysis program.

In addition, the method in this embodiment includes the following further steps: activation of the evaluation system by the operator or by a control of the production plant, triggering of a user-defined analysis routine in the analysis program by the operator or by the control of the production plant, so that the provided measured values from the at least two Measured variables are analyzed in terms of mutual dependency in such a way that at least one statement about the current physical condition of the tool component with regard to tool component wear is provided in real time and, depending on this analysis, at least initial information is provided for the operator or the control of the production plant and / or at least a first control command is triggered on the production system.

In this way, a method can be provided with which a particularly precise indication of tool wear is possible during ongoing operation. Instead of considering individual measured values, it is provided that the respective determined measured values are analyzed in such a summarized manner for mutual dependency, so that at least one particularly precise statement about tool wear is possible.

The information amalgamation of the measured values of two different measured variables offers the advantage over a stand-alone consideration of a series of measurements that overall more precise statements about a respective tool component status are possible. Since an operator or the control or the machine control, which can react automatically to the event, these statements are also made available at any time in real time, it is thus guaranteed at any time to take corrective action in the process or even to interrupt it in extreme cases, for example to the affected Exchange tool component.

Since particularly precise statements about tool wear conditions occurring at any time in a manufacturing cycle are provided by means of the presented method during ongoing manufacturing operations, manual measurements on workpieces to be manufactured can at least be minimized if not even superfluous. Since statements about occurring tool wear conditions are provided particularly precisely at all times by means of the method, it is thus ensured that incorrect assessments, which lead to incorrectly manufactured workpieces or at least to workpieces with insufficient quality, are minimized if not even completely ruled out. It is also possible to make a statement about the current status of the tool. In this way, a point in time for a tool change can be displayed so that the operator or the control can be advantageously supported in this activity. Tool changes that are at least partially automated by the control can also be advantageously supported in this way. It is thus possible by means of the method presented to avoid tool changes that are carried out too early. Tools that are changed too early increase tool costs.

In this way, inexpensive production can be supported by means of the presented method, so that overall a minimization of the production costs for the individual workpieces can be achieved.

The measured values collected during the presented method can be determined by any sensors or sensor devices or other components of the manufacturing plant and at least partially continuously determined and / or measured during the active operating time and / or at least partially during the entire life cycle of the manufacturing plant.

It is also conceivable that at least some of the measured values are carried out by means of external additional components, which can be interactively coupled with the production system and / or can be provided by means of external additional components that monitor the production process and thereby overlook the respective work steps of the tool component and / or generally any work steps of the production system and thereby determine suitable measured values. It is also conceivable that the measured values are processed in a suitable manner by a suitable control unit of the production plant before they are then made available to the evaluation system.

Depending on what this analysis, carried out during the presented method, yields for intermediate results and / or results and / or in general for information, it is provided in a separate method step to inform a user of the production system accordingly. Thus, for example, a user can then draw appropriate conclusions on the basis of this information in order, for example, to intervene in the manufacturing process with corrective action and / or to carry out or at least initiate a tool component change himself.

It is also conceivable that at least a first control command is then triggered on the production system as a result. The evaluation system can, for example, be designed to output corresponding signals either directly or indirectly, so that a desired action is then carried out on the production plant.

In a further preferred embodiment of the invention it is provided that an evaluation system with an analysis program for monitoring tool wear of tool components in machining production plants is provided. Such an evaluation system comprises at least one interface in order to couple the evaluation system with a machining production plant, so that during a rotating operating state of a tool component from the production plant that is actively interacting with a workpiece to be machined, respective measured values of at least two and mutually different measured values of the tool component from the Manufacturing plant measured and the evaluation system are available. The evaluation system with an analysis program is designed to analyze the provided measured values of the at least two measured variables with regard to mutual dependency in such a way that at least one statement about the current physical condition of the tool component in relation to tool component wear can be made available in real time and depending on this analysis at least a first piece of information can be made available to an operator or a control of the manufacturing plant and / or at least a first control command can be triggered on the manufacturing plant.

The advantages mentioned above also apply to the presented evaluation system to the extent that they can be transferred.

In a further preferred embodiment of the invention, it is provided that a production system for the machining production of workpieces is provided, which includes an evaluation system with an analysis program according to claim 9.

The advantages mentioned above also apply to the production system presented, insofar as they are transferable.

Further preferred embodiments of the invention emerge from the other features mentioned in the subclaims.

In a further embodiment of the invention it is provided that a first measured variable is a current status position value of the tool component in relation to the workpiece to be machined and a second measured variable is a current torque value as a function of a drive current value of a tool component drive unit of the manufacturing plant of the rotating tool component or a current torque value, which is provided by a torque measuring shaft device comprises. The production system can be, for example, a CNC milling machine which, in operational terms, has measuring systems for detecting the infeed position of the tool (position measurement) and a quantity equivalent to the torque output of a main spindle (torque measurement), such as the current consumption of the motor. For example, measured values relating to a torque and motor current from a control unit of the production plant can be transmitted to the evaluation system via a suitable interface which provides the data with sufficient resolution. In an electric machine, the torque is current-dependent. Theoretically, however, it could alternatively also be recorded via a torque measuring shaft device or the like, for example. In addition, any other signals that correlate with the beginning of tool engagement or tool wear can be used. The tool component drive unit can include at least one electric motor, in particular a servo motor or the like. By combining a torque measurement with an infeed position of the tool component in each production cycle (sensor or information fusion), the position at which the torque increases and the production process begins is determined. It is expected that the torque increase takes place according to progressive tool wear with increasing tool positions. Any deviations from the start of production (delta x) can be detected and corrected by the control system or an external processing unit (diameter correction) in order to automatically detect and avoid deviations in the workpiece dimensions.

In other words, instead of a single consideration and a single analysis of measured variables that stand alone, an information fusion of respective measured values with regard to torque and infeed position is provided in such a way that a more precise and real-time description of the status of any tool wear phenomena that occur in contact with the to machining workpiece located tool component is made possible. If, in the method presented, sensors that are operationally available are also used, there are no additional acquisition and / or installation costs for a sensor system or evaluation routine. All that is required is a corresponding evaluation system, which can include, for example, a computing unit in the form of an edge device or a commercially available IPC, which then carries out the desired evaluation of the measured values in the manner described above. The special evaluation routine, which is provided in the presented method, can be provided for almost any machining production plant, so that cost-effective scaling is possible.

Instead of an elaborate adaptation of elaborate model-based approaches (such as physical models), which also require powerful computers, a large number of production systems can be analyzed and then optimized using the presented method and the intelligent evaluation routine of the different measured variables. By combining the torque measurement with the position measurement, manual measurements of the workpiece to readjust the tool component or the tool or, in general, a diameter correction are superfluous. The measuring system available in the production plant and used for the exact approach to the infeed position is used in conjunction with the torque of the main spindle to measure the decrease in diameter of the tool component and to carry out the diameter correction automatically.

In addition, a second, independent measured variable for determining wear (the infeed position) increases the quality of the condition monitoring of the tool components and thus the production quality. In addition, no additional costs are necessary for additional purchases of additional sensors, since the method can be carried out with the evaluation instruments already available in most production systems. Thus, not only on the basis of the increase in cutting force, but also on the basis of the diameter correction of the tool component or of the tool, its wear can be determined. This leads to more precise statements about the tool condition and the possibility of automatic adjustment of the dimensional deviation on the workpiece. It is also conceivable that, by means of the method presented, a current state position value is determined accordingly, cumulatively, from the readjustment values that have already been carried out.

In other words, in the case of an automatic diameter correction routine, as is often provided in production systems, these individual values can already be transmitted or provided to the evaluation system, so that a continuous analysis in the sense of the method presented is thus enabled from the start.

In a further embodiment of the invention it is also provided that the at least one first control command comprises an at least partially automated exchange routine of the tool component. Thus, for example, an excessively worn tool component can not only be recognized in good time, but can also be exchanged directly, at least in part automatically. This not only avoids the costs of defective or poor quality workpieces. At the same time, a smooth production operation with short downtimes can be favored, since it can be recognized at an early stage on the basis of the particularly precise analysis when a change is necessary. This can then, for example, be scheduled in corresponding production intervals, in which, for example, a new basic workpiece is set up in the system for the purpose of processing.

In addition, a further embodiment of the invention provides that the at least one first piece of information for an operator of the production system is selected from: acoustic and / or visual warning signal, acoustic and / or visual recommendation to replace the currently used tool component. In this way, an operator or a user of the production plant can be appropriately informed of critical states at any time by means of the method presented. In particular, on the basis of the particularly precise analysis, it can be assumed that false alarms are completely prevented and thus only really relevant status information is provided accordingly.

Furthermore, a further embodiment of the invention provides that user-defined first limit values are stored in the evaluation system for respective measured values of the at least two measured variables, the respective limit values being selected based on the respective activated production program so that when the respective first limit values are simultaneously exceeded at least a first and / or a second piece of information is provided for the operator of the manufacturing plant and / or at least a first and / or a second control command is triggered on the manufacturing plant. In this way, even before the first operating cycle, an operator of the production plant can be given the opportunity to determine suitable limit values based on the respective production information stored in the plant. These limit values are then used for at least partially automatic monitoring. The monitoring routine can also independently learn new limits for determining the optimal change time based on history data that contain diameter corrections and change times and apply them or suggest them to the operator. The monitoring routine can also independently learn new limits for determining the optimal change time based on history data that contain diameter corrections and change times and apply them or suggest them to the operator or the controller. Even if an operator does not continuously monitor the production process, it is thus possible to draw the operator's attention specifically to the problem at hand when the respective limit values are exceeded. A second control command can be provided in a user-defined manner, depending on which system the system is connected to. For example, a temporary stop routine or the like can be triggered so that the reported situation is first assessed before the production process is continued.

In a further embodiment of the invention it is also provided that the at least one second piece of information for an operator of the production plant is selected from: acoustic and / or visual warning signal, acoustic and / or visual display of the respective limit value violations. In this way, an operator or a user of the production plant can be appropriately informed of critical states at any time by means of the method presented. In particular, on the basis of the particularly precise analysis, it can be assumed that false alarms are completely prevented and thus only really relevant status information is provided accordingly. The first information can thus initially inform the operator in general or represent the continuous course in the sense of the calculated analysis. The second piece of information can then point out in a targeted manner that the respective limit values have been exceeded and, in the process, point out, for example, a critical situation in a suitable manner.

Furthermore, a further embodiment of the invention provides that user-defined second limit values are stored in the evaluation system with analysis program for the measured values of the at least two measured variables, so that if the respective second limit values are exceeded at the same time, an emergency shutdown routine and / or a transition to a previously user-defined one stored safe state is triggered on the production system. This procedure thus offers the advantage that an operator of the system who uses the method presented defines criteria for an emergency shutdown routine prior to commissioning in order to avoid major damage to the system.

Finally, in a further embodiment of the invention, it is provided that the evaluation system is designed to provide the at least one first and / or second item of information by means of respective components of the production system. For example, such components on the production system can be any screen devices, such as monitors or display units. The form of representation can be provided, for example, in the form of a coordinate system in which the dependencies of the respective measured values of the selected measured variables are listed accordingly, so that a summarized representation of the results is possible at a glance. Such components can also include at least one suitable interface device, so that, for example, the operator of the system can be informed in any other conceivable way. It is conceivable, for example, that this information can then be made available as an e-mail and / or short message and / or generally as a message to a higher-level production control system.

The current status data can also be transmitted to a central database and / or to a storage unit in the production plant.

The presented method as well as the evaluation system and the presented production plant can be used, for example, in all metalworking branches of industry with machining production, whereby they are to be used primarily for the purpose of increasing efficiency.

The various embodiments of the invention mentioned in this application are Unless otherwise stated in individual cases, they can advantageously be combined with one another.

• 1 ein Verfahrensablaufdiagramm von einem Verfahren zur Überwachung eines Werkzeugverschleißes von Werkzeugkomponenten bei zerspanenden Fertigungsanlagen;
• 2 eine schematische Darstellung von einem Auswertesystem mit Auswerteprogramm zur Überwachung eines Werkzeugverschleißes von Werkzeugkomponenten bei zerspanenden Fertigungsanlagen;
• 3 eine schematische Darstellung von einer Fertigungsanlage für die zerspanende Fertigung von Werkstücken;
• 4 eine schematische Darstellung von einer Werkzeugkomponente von einer Fertigungsanlage für die zerspanende Fertigung von Werkstücken während der Bearbeitung eines Werkstückes;
• 5 eine vereinfachte Darstellung eines Analysediagramms von einem Auswertesystem mit Auswerteprogramm zur Überwachung eines Werkzeugverschleißes von Werkzeugkomponenten bei zerspanenden Fertigungsanlagen.

The invention is explained below in exemplary embodiments with reference to the accompanying drawings. Show it:

• 1 a process flow diagram of a method for monitoring tool wear of tool components in machining production plants;
• 2 a schematic representation of an evaluation system with evaluation program for monitoring tool wear of tool components in machining production plants;
• 3 a schematic representation of a production system for the machining production of workpieces;
• 4th a schematic representation of a tool component of a production system for the machining production of workpieces during the machining of a workpiece;
• 5 a simplified representation of an analysis diagram from an evaluation system with evaluation program for monitoring tool wear of tool components in machining production plants.

1 shows a process flow diagram 100 of a method for monitoring tool wear of tool components in machining production systems.

In a first process step 110 a machining production system with a production program is provided. In a second process step 120 the manufacturing plant is operated with a manufacturing program, whereby, during a rotating operating state of a tool component actively interacting with a workpiece to be machined, the manufacturing plant measures respective measured values of at least two and mutually different measured variables of the tool component from the manufacturing plant and an external evaluation system coupled to the manufacturing plant with an analysis program to be provided. In a third process step 130 the evaluation system is activated by the operator or by a control of the production plant. In a fourth method step 140, a user-defined analysis routine is triggered in the analysis program by the operator or by the control of the production plant, so that the measured values provided by the at least two measured variables are analyzed with regard to mutual dependency so that at least one statement about a current one is available in real time at any time physical state of the tool component is provided in relation to tool component wear and, depending on this analysis, at least first information is provided for the operator or the control of the manufacturing plant and / or at least one first control command is triggered on the manufacturing plant.

2 shows a schematic representation of an evaluation system 10 with evaluation program 12th for monitoring tool wear of tool components in machining production systems. There is also a control unit 14th of the manufacturing plant to be monitored, not shown in detail, which from a tool component of the manufacturing plant, also not shown in detail, transmits measured values of at least two monitored measured variables to the evaluation system 10 provide. A first and a second connecting arrow 16 , 18th indicate this coupling, which is carried out, for example, via a suitable interface. Another third connecting arrow 20th indicates to what extent an analysis is then carried out by the evaluation system 10 accordingly to the control unit 14th is played back. By means of one with the control unit 14th coupled screen device 22nd from the production plant (shown by means of a further fourth connecting arrow 24 ) the analysis provided can then be made available to an operator of the production plant.

3 shows a schematic representation of a manufacturing plant 26th for the machining of workpieces 28 . The manufacturing facility 26th comprises a screen device 22nd , which is designed to provide an operator with corresponding analyzes in a visualized manner. In this greatly simplified representation, there is a tool component 30th on a main spindle 32 connected, with the main spindle 32 by means of a tool component drive unit 34 is driven. Such a tool component drive unit 34 can for example comprise an electric servo motor. The manufacturing facility 26th is also with a coupled evaluation system 10 with evaluation program 12th for monitoring tool wear of tool components in machining production systems.

4th shows a schematic representation of a tool component 30th from a manufacturing facility 26th for the machining of workpieces 28 while machining a workpiece 28 . Here is a first state 36 the tool component 30th represented by a dashed line, in this first state 36 No significant signs of wear on the tool component yet 30th are to be determined. An illustrated second state 38 however, clarifies the extent to which a change in Tool component 30th is to be measured when the first serious signs of wear and tear on the tool component 30th are to be determined. A directional arrow 40 illustrates the direction of the infeed position of the tool component 30th towards the workpiece 28 . The Δ X clarifies the measured value of this measured variable to be measured.

5 shows a simplified representation of an analysis diagram 200 from an evaluation system 10 with evaluation program 12th for monitoring tool wear of tool components 30th in machining production systems 26th . Measured values are thereby related to a feed position of a tool component 30th towards a workpiece 28 shown on the X-axis and corresponding measured values with regard to a measured torque on the Y-axis. There are respective first limit values 42 , 44 shown. As an example, two values are entered on the X-axis. X_1 represents the infeed of the tool component 30th after a first production cycle.
Correspondingly, a delivery after 1,000 production cycles is displayed using X_1000. In connection with the measured torque values, a combined statement is possible, which ultimately enables a statement to be made about any tool wear that occurs. The individual infeeds can also be displayed as a cumulative diameter correction.

List of reference symbols

10

Evaluation system

12th

Evaluation program

14th

Control unit

16

first connecting arrow

18th

second connecting arrow

20th

third connecting arrow

22nd

Screen device

24

fourth connecting arrow

26th

Manufacturing facility

28

workpiece

30th

Tool component

32

Main spindle

34

Tool component drive unit

36

first state

38

second state

40

Direction arrow

42

first limit value with regard to the infeed position

44

first limit value regarding torque

100

Process flow diagram

110

first procedural step

120

second procedural step

130

third process step

200

Analysis chart

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102005041175 A1 [0010]
• DE 102007048961 A1 [0011]

Claims (10)

A method for monitoring tool wear of tool components (30) in machining production plants (26) comprising the following steps: • providing a machining production plant (26) with a production program; • Operation of the production plant (26) with a production program, whereby, during a rotating operating state of a tool component (30) from the production plant (26) that actively interacts with a workpiece (28) to be machined, respective measured values of at least two and mutually different measured variables of the tool component (30 ) measured by the production system (26) and provided to an external evaluation system (10) coupled to the production system (26) with an analysis program (12), characterized in that the method comprises the following further steps: Activating the evaluation system (10) the operator or by a control of the production plant (26); • Triggering a user-defined analysis routine in the analysis program (12) by the operator or by the control of the production plant (26), so that the provided measured values of the at least two measured variables are analyzed in terms of mutual dependency, so that at least one statement about one of them in real time the current physical state of the tool component (30) with regard to tool component wear is provided and, depending on this analysis, at least first information is provided for the operator or the control of the production plant (26) and / or at least one first control command on the production plant (26) is triggered. Procedure according to Claim 1 , wherein a first measured variable is a current state position value of the tool component (30) in relation to the workpiece (28) to be machined and a second measured variable is a current torque value as a function of a drive current value of a tool component drive unit (34) of the production system (26) of the rotating tool component (30 ) or a current torque value which is provided by a torque measuring shaft device. Method according to one of the preceding claims, wherein the at least one first control command comprises an at least partially automated exchange routine of the tool component (30). Method according to one of the preceding claims, wherein the at least one first piece of information for an operator of the production plant (26) is selected from: acoustic and / or visual warning signal, acoustic and / or visual recommendation to replace the currently used tool component (30). Method according to one of the preceding claims, wherein user-defined first limit values are stored in the evaluation system (10) for respective measured values of the at least two measured variables, the respective limit values being selected based on the respective activated production program so that when the respective first limit values are exceeded at the same time, at least a first and / or a second piece of information is provided for the operator of the manufacturing plant (26) and / or at least a first and / or a second control command is triggered on the manufacturing plant (26). Procedure according to Claim 5 , wherein the at least one second item of information for an operator of the production plant (26) is selected from: acoustic and / or visual warning signal, acoustic and / or visual display of the respective limit value being exceeded. Method according to one of the preceding claims, wherein user-defined second limit values are stored in the evaluation system (10) with analysis program (12) for the measured values of the at least two measured variables, so that if the respective second limit values are exceeded at the same time, an emergency shutdown routine and / or a transition to a previously stored user-defined safe state is triggered on the production system (26). Method according to one of the preceding claims, wherein the evaluation system (10) is designed to provide the at least one first and / or second item of information by means of respective components of the production system (26). Evaluation system (10) with analysis program (12) for monitoring tool wear of tool components (30) in machining production plants (26) comprising at least one interface to couple the evaluation system (10) with a machining production plant (26) so that during a rotating operating state a tool component (30) actively interacting with a workpiece (28) from the production system (26), respective measured values of at least two and mutually different measured variables of the tool component (30) measured by the production system (26) and made available to the evaluation system (10) are, characterized in that the evaluation system (10) is designed with an analysis program (12), to analyze the provided measured values of the at least two measured variables in terms of mutual dependency so that at least one statement about a current physical state of the tool component (30) with regard to tool component wear can be made available in real time and, depending on this analysis, at least first information for an operator or a control of the manufacturing plant (26) can be provided and / or at least a first control command can be triggered on the manufacturing plant (26). Production system (26) for the machining production of workpieces (28) comprising an evaluation system (10) with an analysis program (12) according to Claim 9 .

Images