Communication system and machine device

Abstract

To provide a machine device provided for cutting.SOLUTION: A communication system comprises at least one of a data acquisition device (94) which acquires sensor data preferably in real time with at least one machine device provided for cutting; a data collection device (102) which digitalizes the acquired data; and a data evaluation device (122) which evaluates the collected digital data.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a communication system and to a machine provided for, and in particular part of, such a communication system, in the form of a tool turret or rotary table, which comprises a housing part and a holding part which can be fixed relative to this in a settable angular position out of a release position. [Background technology]

[0002] German patent application DE 102009042772 A1 discloses an exemplary tool turret of this kind, which has a drive for selectively driving a tool disk relative to a fixedly arranged housing part, which tool disk serves as a pivotable and fixable holding part for a tool holder with a cutting tool.

[0003] From German patent application DE 198 53 590 C1, a machine in the form of a rotary table is known, which has a further table part as a holder for the workpiece to be clamped, which is preferably pivotable and fixable relative to a fixedly arranged table part, in order to form a clamp as part of the indexing of the rotary index table.

[0004] The above-mentioned machinery and equipment are merely illustrative; it is evident that numerous and diverse equipment solutions exist in this field in the prior art. Recently, a futuristic project aimed at the comprehensive digitalization of industrial production has emerged in the context of artificial intelligence (AI), referred to under the slogan "Industry 4.0." The technological basis for this is digitally networked, intelligent communication systems, which aim to enable nearly self-organized production. The desired vision is therefore one in which networking allows people, machines, factories, logistics, and products to communicate and cooperate directly with one another, defining not just the production process, but the entire value chain. In the field of machinery and equipment in the form of tool turrets and rotary tables, which are the focus of this discussion, no developments have been made in this direction to date.

[0005] In classical tool turrets, it has already been proposed to acquire and partially evaluate various sensor data, but this does not allow for modern communication systems that can be used in the context of realizing Industry 4.0 concepts. For example, International Patent Application WO 2018 / 099697 A1 presents a tool holder for receiving a rotatably drivable cutting tool, which tool holder can be partially inserted into a receptacle in a tool disc of a tool turret, and in whose housing a sensor module is arranged, which is also connected to a sensor unit and is arranged in an area outside a line for the supply of cooling lubricant to the respective machining tool, in order to detect the presence of fluid outside this line as part of fault detection for smooth operation. Summary of the Invention [Problem to be solved by the invention]

[0006] The object of the present invention is therefore to provide a communication system that ensures smooth communication and in particular makes it possible to integrate the respective machine into Industry 4.0 or AI concepts, as well as to provide an interface to the machine for this purpose. [Means for solving the problem]

[0007] The above problem is solved by a communication system with the features of patent claim 1 and by a machine device, in particular part of such a communication system, with the features of patent claim 2.

[0008] The communication system according to the present invention comprises, as a minimum equipment: A data acquisition device for acquiring sensor data, preferably in real time, from at least one machine device provided for cutting; a data acquisition device that digitizes the acquired data; and a data evaluation device for evaluating the collected digitized data; It has at least one.

[0009] In this way, bidirectional communication between the data evaluation device (hereinafter referred to as "IQ Box") and the individual data acquisition devices can be realized via the bus system. This results in a self-configuring network. The IQ Box can check which participants in the form of individual machines are active on the bus and configure the individual bus participants accordingly. This allows service technicians to easily replace components without having to change the basic configuration of the machine and its control device.

[0010] Furthermore, the IQ Box can write status data to the respective data collection devices, and cloud integration, preferably within the framework of a local cloud server, allows for permanent updating of the system at the installation site to be achieved externally, for example via the machine or equipment manufacturer.

[0011] The data collection device can also self-collect operating hours, number of temperature exceedances, or other status information obtained from the machine's sensor data obtained by various sensors.

[0012] Furthermore, the international transmission standard NFC (Near Field Communication), which is based on RFID technology, for contactless data exchange by electromagnetic induction can be implemented in the communication system according to the invention, although other contactless transponder transmission technologies can also be used within the scope of the implementation of the communication system.

[0013] Another functionality of the communication system of the present invention, based on the concept of Industry 4.0, is the acquisition of usage data, such as the creation of processing histograms, service life monitoring, detection of extreme values ​​for sensor data evaluation, etc. Furthermore, tool compensation data, such as drill clamping lengths, milling radius compensation values, etc., can be read and written via the communication system.

[0014] Furthermore, the large amount of collected data on communication systems can be used to "train" AI systems, possibly including creating so-called "digital twins" of each installed machine, thereby optimizing service and distribution concepts.

[0015] Essentially, provided that the usual data security regulations are observed, the communication system according to the invention can be used to operate and maintain the respective machine equipment in the form of a tool turret or rotary table from the outside, either via the internal machine control (PLC control) or also via the external cloud.

[0016] In order to realize an interface connection that is particularly suitable for the communication system according to the invention, in a machine device, preferably in the form of a tool turret or a rotary table, at least a part of a transmission path for transmitting at least one information and / or energy between members that are movable relative to one another is configured side by side in the fixed state of the members and is interrupted in the release position in order to allow problem-free operation of both the machine device and the assignable communication system.

[0017] According to the subject matter of the further dependent claims, essentially two interface concepts emerge as being of particular importance, one in the form of an internal communication interface and the other in the form of an external communication interface. The advantage of an external communication interface is that such a device can be used even in already delivered machines, even after delivery to the customer. The advantage of an internal interface, on the other hand, is that it is protected from external damage (risk of collisions during processing) and therefore preferably all relevant parts of the communication system can be accommodated inside the respective machine, also protected from fluids.

[0018] The communication system according to the invention and the associated machinery will now be described in more detail with reference to the drawings, which are illustrative and not to scale, in which: [Brief explanation of the drawings]

[0019] [Figure 1] 1 shows a perspective view of a tool turret having a tool disk that is swingable relative to a fixedly arranged housing part, with several peripherally arranged receptacles for tool holders of cutting tools; [Figure 2] FIG. 2 is a cross-sectional view of the tool turret according to FIG. [Figure 3] 1 illustrates a first form of contact device for forming a transmission path in a communication system, the contact device being shown in an uncoupled position and externally mounted to a tool turret; FIG. [Figure 4] 1 illustrates a first form of contact device for forming a transmission path within a communication system, the contact device being shown in a coupled position and externally mounted to a tool turret; FIG. [Figure 5] 1 shows a longitudinal section of a conventional tool holder device, in which in the rear wall area opposite the spindle bearing there are plug or socket contacts of the contact device and space for wiring cables to the respective sensors in the tool holder device. [Figure 6] 6 shows a schematic partial view of the tool holder according to FIG. 5 with some receiving channels for receiving some sensors; [Figure 7] 2 shows a longitudinal section of another embodiment of a tool turret comparable to the solution of FIG. 1, which forms an internal interface within the framework of the realization of a transmission path; [Figure 8] 8 shows another contact device according to FIG. 7 in the contact position; [Figure 9] 8 shows another contact device according to FIG. 7 in a non-contact position. [Figure 10] 9 shows a partial cross-sectional view of the contact representation according to FIG. 8 as seen in a viewing direction perpendicular to the plane of the drawing. [Figure 11] 1 shows, in block diagram form, the essential components of a communication system preferably used in a machine according to the previous figures; DETAILED DESCRIPTION OF THE INVENTION

[0020] 1 and 2 show a machine device according to the invention in the form of a tool turret 10 corresponding to the tool turrets disclosed in German patent application DE 10 2009 042 772 A1 or German patent application DE 10 2005 033 890 A1 as part of a communication system according to the invention. The tool turret 10 has a stationary housing part 12 and a holding part 14 in the form of a tool disk 16 that is rotatable relative to the stationary housing part 12 and can be fixed in various fixed positions at a settable angle relative to the stationary housing part 12. On its peripheral side 18, the tool disk 16 has a number of individual receptacles 20 for receiving tool receptacles 22 for tool holders 24, respectively, corresponding to the tool receptacles disclosed in German patent application DE 19 824 692 A1 or German patent application DE 10 2014 003 336 A1. Each tool holder 24 serves to receive a cutting tool (not shown).

[0021] Alternatively, the machine can be configured as a rotary table (not shown) corresponding to the rotary table disclosed in German patent application DE 198 53 590 C1, which has a stationary housing part in the form of a stationary table part and a holding part in the form of a rotatable table part surrounding the stationary table part.

[0022] The stationary housing part 12 has a first portion 26 of a transmission path 28, and the holding part 14 has multiple second portions 30 of the transmission path 28 (FIGS. 3, 4, 8, 9). The first portion 26 and the single second portion 30 of the transmission path 28 are connectable to each other at a fixed position on the holding part 14 by a contact device 32 disposed between the stationary part 12 and the holding part 14. When the holding part 14 is released to rotate, the contact device 32 separates the first portion 26 and all second portions 30 of the transmission path 28 from each other.

[0023] A plurality of transmission paths 28 are provided, each configured to transmit information and / or energy, and are arranged side by side with each other, at least in the region of the contact device 32, so that their centers, when viewed in cross section, can intersect a common plane whose normal corresponds to the rotation axis 34 of the holding portion 14.

[0024] Another contact device 38 is provided between the tool holder 22 and the holding portion 14 to connect the second portion 30 of the transmission path 28 passing through the holding portion 14 with the third portion 36 of the transmission path 28 passing through each tool holder 22 (Figures 3 to 5).

[0025] Each of the transmission paths 28 can be configured wirelessly, but is shown as being configured as a wired path in the figure. When wireless transmission paths 28 are provided, at least some of the contact devices 32, 38 of these transmission paths 28 can be omitted. When wired transmission paths 28 are provided, each of the contact devices 32, 38 can be configured as a non-contact device, for example, resonant, inductive, capacitive, or optical.

[0026] 2 to 4 show a first embodiment of a contact device 32 for connecting and disconnecting the first portion 26 of the transmission path 28 and the second portion 30 of the transmission path 28, respectively.

[0027] In the first embodiment, the contact device 32 has a separate housing 42, distinct from the housing 40 of the tool turret 10 and fixed externally to the housing 40 of the stationary housing part 12 of the tool turret 10. A plug part 44 is at least partially arranged in the separate housing 42 of the contact device 32. The plug part 44 is movable along the rotation axis 34 of the holder part 14 by an actuator 46 in the form of a linear drive arranged in the housing 42. The linear drive is configured as an energizable actuating magnet 50, the actuating element 52 of which is connected to the side of the plug part 44 facing away from the holder part 14. At least one transmission path section 54 of the first part 26 of the transmission path 28 extends through the plug part 44 and protrudes therefrom in the form of a contact pin 56 toward the holder part 14.

[0028] The actuating magnet 50, which is designed to pull or push, is controlled so that, starting exclusively from a position in which the plug part 44 at least partially enters the further housing 42 of the contact device 32 in the respective fixed position of the holding part 14, i.e., from a position in which the plug part 44 is arranged at a distance from the socket part 58 of the external bridge part 60 (FIG. 3), it moves out of the further housing 42 of the contact device 32 in the direction of the holding part 14, until the end region of the plug part 44 facing the holding part 14 enters and engages in the socket part 58 of the external bridge part 60, thereby connecting the first part 26 and the respective second part 30 of the transmission path 28 assigned to the holding part 14 with each other (FIG. 4). The plug part 44 remains in this position at least substantially throughout the entire period in which the holding part 14 is arranged in its fixed position.

[0029] The bridge portion 60 is formed at a right angle. One leg 62 of the bridge portion 60, which extends perpendicular to the longitudinal axis of the linear drive 50 and is at least partially fixed to the holder 14, is provided with a socket portion 58 for the plug portion 44. The other leg 64 of the bridge portion 60, which is spaced apart from the holder 14 and extends parallel to the rotation axis 34 of the holder 14, is provided with a portion of another contact device 38 for connecting the second portion 30 of the transmission path 28, which extends through the tool receptacle 22, with the third portion 36 of the transmission path 28. The portion of the another contact device 38 formed on the bridge portion 60 is configured as another bushing portion 66.

[0030] An advantage of the contact devices 32, 38 being arranged outside the tool turret 10 is that machines already delivered to a customer can be retrofitted with the communication system according to the invention in a retrofit sense.

[0031] 7 to 10 show a second embodiment of a contact device 32 for connecting and disconnecting the first portion 26 of the transmission path 28 and the respective second portion 30 of the transmission path 28. In FIG.

[0032] In the second embodiment of the contact device 32, the first portion 26 of the transmission path 28 extends through the stationary housing part 12 parallel to the longitudinal axis 68 of the drive unit 70 of the tool turret 10, and the second portion 30 of the transmission path 28 extends radially through the holder 14 perpendicular to the rotation axis 34 of the holder 14, with all imaginary extensions of the second portion 30 of the transmission path 28 intersecting at a point on the rotation axis 34 of the holder 14. The second portion 30 of the transmission path 28, which extends through the receptacle of the holder 14 that is currently connected to the drive unit 70 of the tool turret 10, is arranged parallel to the longitudinal axis 68 of the drive unit 70 of the tool turret 10.

[0033] Between the stationary housing part 12 and the holding part 14, a contact device 32 designed in the manner of an on / off switch is configured as part of the transmission path 28. The contact device 32 has an actuator device 46 formed from a meshing unit 74. On its end face facing the stationary housing part 12, the meshing unit 74 is configured as a ring with surface-like meshing teeth 76 in the sense of a Hirth coupling. On the side of the meshing unit 74 opposite the surface-like meshing teeth 76, a substantially rectangular annular projection 78 is provided, which extends away from the meshing unit 74 in the direction of the receptacle 20 and into an annular recess 80 in the holding part 14. The first and second parts 26 and 30 of the transmission path 28, each equipped with a resilient contact element 82, project into this recess. The annular projection 78 supports insulating layers 84 on the side facing the subsequent tool holder 22 and on the side facing away from the projection 78, respectively, which are arranged opposite each other. Alternatively, only one of the insulating layers 84 may be provided.

[0034] On the side of the surface teeth 76, a meshing disk 86 and a further meshing disk 88 are connected to the meshing unit 74 in the direction of the rotation axis 34 of the holder 14, and are arranged coaxially with the rotation axis 34 of the holder 14 and with each other. On the side of the protrusion 78, a conductor 90 for conducting information and / or energy in the direction of the rotation axis 34 of the holder 14 is connected to the meshing unit 74 and is always arranged in the recess 80 of the holder 14. The conductor 90 may be an integral part of the protrusion 78 of the meshing unit 74. The meshing unit 74 and the meshing disk 86 are part of the stationary housing part 12, while the further meshing disk 88 is part of the holder 14.

[0035] The meshing unit 74 can be moved along the axis of rotation 34 of the holder 14 using a fluid medium, preferably a hydraulic medium, so that in one of its final positions the surface meshing teeth 76 engage a stationary meshing disc 86 and a further meshing disc 88 that is rotatable relative to the meshing unit 74 and / or the stationary meshing disc 86. In this final or fixed position, the further meshing disc 88 is fixed against rotation relative to the meshing disc 86, which is in the locked position. At the same time, in this position 90, the resilient contact elements 82 at the ends of the first and second portions 26, 30 of the transmission path 28 contact the conductors 90, thereby connecting the first and second portions 26, 30 of the transmission path 28 to each other (FIG. 8).

[0036] When the interlocking unit 74 moves from the fixed position toward its other final position where the interlocking unit 74, the interlocking disk 86, and the further interlocking disk 88 are disengaged in the released position, the interlocking unit 74 acts with its end face on the conductor 90 toward the receptacle 20, causing the conductor 90 to move out of contact with the resilient contact elements 82 of the first and second portions 26, 30 of the transmission line 28, and each resilient contact element 82 to come into contact with its adjacent conductor 90, thereby interrupting the transmission path 28 (FIG. 9).

[0037] The end of the second portion 30 of the transmission path 28 facing the tool holder 22 is connected to another socket portion 66 arranged on the peripheral surface 18 of the tool turret 10 facing the tool holder 24 .

[0038] 10 shows four transmission paths 28 arranged side by side in the region of the contact device 32, with the first and second portions 26, 30 of the transmission paths 28 connected to each other by conductors 90. Each conductor 90 is arranged within a circumferential latch ring 92, which is preferably cylindrical.

[0039] An advantage of the contact devices 32, 38 arranged inside the tool turret 10 is that the communication system according to the invention is protected from external damage, for example due to collisions during operation of the machine. Therefore, the relevant parts of the communication system in the respective machine, preferably all relevant parts, can be housed inside the machine, also protected from fluids.

[0040] Each information carrying transmission path 28, if provided, is used to transmit sensor data from at least one data acquisition device 94 in the form of a sensor 96. Each sensor 96 may be located on or within the machine.

[0041] 5 and 6 show the space provided in the tool holder 22 for the tool holder 24, in which the sensor 96 and the respective third portion 36 of the transmission path 28 connected to this sensor 96 can be arranged. Thus, conduits 100 of different lengths are introduced into the tool holder 22, extending from the side of the tool holder 22 opposite the opening 98 for the tool holder 24 towards the opening 98 side, in which each sensor 96 and its corresponding pickup can be arranged (FIG. 6). Furthermore, on the side of the tool holder 22 opposite the opening 98 for the machining tool, a data acquisition device 102 for storing sensor data is provided (FIG. 5), and on this side, at the end of the tool holder 22 facing the receptacle 20, part of another contact device 38 is provided in the form of another plug portion 104 for connection with another socket portion 66. The relevant components of the communication system arranged on this side are sealed by a cover portion 106, which is part of the housing 108 of the tool holder 22.

[0042] Each sensor 96 is connected to another plug portion 104 via the third portion 36 of the transmission path 28 via a data collection device 102 and can be designed as a temperature sensor, a deformation sensor, a pressure sensor, an acceleration sensor, a vibration sensor, a humidity sensor, a structure-borne sound sensor or a microphone.

[0043] A sensor 96, for example in the form of a temperature sensor, can be introduced into each of the conduits 100 shown in Figure 6, with the sensor 96 furthest from the holder 14 detecting the temperature of the rear spindle bearing 112 of the tool holder 22, the sensor 96 closest to the holder 14 detecting the temperature of the input shaft 116 of the tool holder 22, and the sensor 96 located between these two sensors 96 detecting the temperature of the front spindle bearing 120 of the tool holder 22.

[0044] If an energy transmission path 28 is provided, this is used to transmit the supply voltage for the respective sensor 96 or for additional auxiliary devices not shown, such as a high-frequency spindle or gripper.

[0045] FIG. 11 shows in block diagram form a communication system according to the invention with a mechanical device.

[0046] The communication system comprises a data evaluation device 122, called an IQ box, which is connected to a number of data acquisition devices 102, two in FIG. 11, via each of two bidirectional wired transmission paths 124 in the form of a bus system.

[0047] Each data acquisition device 102 has a wireless data transmission module (not shown), for example a Near Field Communication (NFC) module, via which the machining tools or tool holders 22 of the tool turret 10 can be parameterized by a terminal device in the form of a computer (not shown), while the parameters are read out by wire. It is also possible to update the software of the communication system via this wireless interface.

[0048] Each data collection device 102 is also connected to at least one data acquisition device 94 in the form of a sensor 96 via a respective one of wired transmission paths 126 .

[0049] Each data collection device 102 temporarily stores and digitizes the sensor data of the connected data acquisition device 94. A data evaluation device 122 at least partially evaluates the collected and digitized sensor data of the connected data collection device 102.

[0050] Each data collection device 102 and its associated respective data acquisition device 122 is associated with a component 128 of the machinery for which the data acquisition device 94 determines sensor values, while the data acquisition device 122 is located remotely from the machinery.

[0051] The data evaluator 122 configures the bus participants, such as the data acquisition device 94 and / or the data collection device 102, accordingly, forming a self-configuring network. This allows for easy and quick replacement of machine components 128, as the IQ Box automatically configures the communication system to accommodate the new components 128. This eliminates the need for a human to actively configure the communication system.

[0052] The data acquisition device 122 or data collection device 102 acquires data regarding the current status of the machinery, such as hours of operation, number of temperature exceedances, etc. The data acquired by the data acquisition device 94 or data collection device 102 may be stored in the data collection device 102, at least for a short period of time. Readout of the status data is possible via a wired or wireless interface.

[0053] The data evaluation device 122 is connected to a data storage device 130, for example a cloud server, in which the acquired sensor data and / or status information for all components 128 of each machine can be stored, further evaluated and from which the stored data can be retrieved. In this way, the communication system, in particular the processes of the machine, can be optimized and predictive service and maintenance can be made possible. The data storage device 130 is connected to a terminal device 132, such as a computer in the form of a PC or a mobile phone.

[0054] Additionally or alternatively, the data evaluator 122 may be connected to the machine controller 134 of each machine, thereby providing direct feedback regarding the status of each machine.

[0055] The communication system according to the invention makes it possible to process machine usage data, for example to create processing histograms or to monitor the reaching of service life or sensor extreme values. Tool compensation data, for example clamping lengths or machining tool compensation values, can be read and written. Large amounts of data, in the sense of Big Data, can be used to train artificial intelligence and create digital models of communication systems with already delivered machines in order to optimize service and sales concepts. Some aspects of the invention are described below. [Aspect 1] a data acquisition device (94) for acquiring sensor data, preferably in real time, from at least one machine device provided for cutting; a data collection device (102) for digitizing the acquired data; a data evaluation device (122) for evaluating the collected digitized data; A communication system consisting of at least one [Aspect 2] A machine device in the form of a tool turret (10) or a rotary table, which is part of the communication system described in particular in aspect 1 and which has a housing part (12) and a holding part (14) that can be fixed in a settable angular position away from a release position relative to the housing part (12), characterized in that at least a part of a transmission path (28) for transmitting at least one information and / or energy between the members (12, 14) is formed side by side in the fixed state of the members (12, 14) and is interrupted in the release position. [Aspect 3] 2. The machine according to claim 1, wherein each transmission path (28) is formed via a contact device (32) that is again designed in a detachable form or in a contactless manner. [Aspect 4] 4. The machine according to any one of aspects 1 to 3, characterized in that the information transmission path (28) serves to transmit sensor data and the energy transmission path (28) serves to transmit supply voltages for the respective sensors (96) or additional accessory devices. [Aspect 5] The following sensors (96) are used as sensor data acquisition devices: Temperature Sensor Deformation Sensor Pressure Sensor Acceleration sensor Vibration Sensor Humidity Sensor Structure-borne sound sensor containing a microphone 5. The machine of any one of aspects 1 to 4, characterized in that it uses at least one of the following: [Aspect 6] 6. The machine device of any one of aspects 1 to 5, wherein each sensor (96) is housed in a tool holder (22) for the tool holder (24), and the tool holder (22) is securable to a peripheral receptacle (20) in a tool disk (16) of the tool turret (10). [Aspect 7] 7. The machine device according to any one of aspects 1 to 6, wherein each sensor (96) in the tool holder (22) is connectable to a portion of the respective transmission path (28) on the side of the pivotable holding part (14) via a separate contact device (38). [Aspect 8] 8. The device according to any one of aspects 1 to 7, characterized in that the contact device (32) on the side of the stationary housing part (12) comprises an actuator device (46) which, when operated, forms a plug-and-socket connection (44, 58) between the swingable holding part (14) and one of its fixed working positions. [Aspect 9] 9. The mechanical device according to any one of aspects 1 to 8, characterized in that the actuator device (46) has an energizable operating magnet (50) or is formed from a releasable meshing unit (74), and that under the influence of a medium, the surface meshing teeth (76) engage with a stationary meshing disk (86) and a meshing disk (88) that is rotatable relative to it, and that in a locked position when all the meshing teeth (76, 86, 88) are engaged with each other, the contact device (32) is in a closed functional position forming a transmission path (28), and in a released position it is interrupted. [Aspect 10] A machine according to any one of aspects 1 to 9, characterized in that a part of the transmission path (28) is formed by a current-carrying part passing through a component of the meshing unit (74).

Claims

1. 1. A machine in the form of a tool turret (10) or a rotary table, comprising a housing part (12) and a tool disk-shaped holding part (14) that can be fixed relative to the housing part (12) at a predetermined angular position from a release position, characterized in that at least a part of a transmission path (28) for transmitting at least one piece of information and / or energy between the housing part (12) and the holding part (14) is formed in the fixed state between the housing part (12) and the holding part (14) and is interrupted in the release position.

2. 2. Machine according to claim 1, characterized in that each transmission path (28) is formed via a contact device (32) which is again designed in a detachable or contactless manner.

3. 3. The machine according to claim 1 or 2, characterized in that the information-transmitting transmission path (28) serves to transmit sensor data and the energy-transmitting transmission path (28) serves to transmit supply voltages for the respective sensors (96) or additional auxiliary devices.

4. The following sensors (96) are used as sensor data acquisition devices: temperature sensors, deformation sensor, pressure sensors, Acceleration sensors, vibration sensors, Humidity sensor, a structure-borne sound sensor including a microphone; 4. The machine device according to claim 3, wherein at least one of the following is used.

5. 5. A machine according to claim 3 or 4, characterized in that each sensor (96) is accommodated in a tool holder (22) for the tool holder (24), the tool holder (22) being securable in a peripheral receptacle (20) in a tool disc (16) of the tool turret (10).

6. 6. The machine according to claim 5, wherein each sensor (96) in the tool holder (22) is connectable via a separate contact device (38) to a portion of the respective transmission path (28) on the side of the pivotable holding part (14).

7. 7. A machine according to claim 1, wherein the contact device (32) on the side of the stationary housing part (12) comprises an actuator device (46) which, when operated, forms a plug-and-socket connection (44, 58) with the pivotable holding part (14) in one of its fixed working positions.

8. 8. The machine according to claim 7, characterized in that the actuator device (46) has an energizable operating magnet (50) or is formed from a releasable meshing unit (74), and that under the influence of the medium, the surface meshing teeth (76) engage with a stationary meshing disk (86) and a meshing disk (88) that is rotatable relative to it, and that in the locked position, when all the meshing teeth (76, 86, 88) are engaged with each other, the contact device (32) is in a closed functional position forming the transmission path (28), and in the released position it is interrupted.

9. 9. Machine according to claim 8, characterized in that part of the transmission path (28) is formed by a current-carrying section passing through a component of the meshing unit (74).

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