EP3727743A1

EP3727743A1 - Sensor module, machine element or tool element, and machine tool

Info

Publication number: EP3727743A1
Application number: EP18833431.2A
Authority: EP
Inventors: Friedrich Bleicher
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-22
Filing date: 2018-12-21
Publication date: 2020-10-28
Also published as: DE202018006651U1; WO2019122375A1; US20210114156A1

Abstract

The invention relates to: sensor modules for e.g. a tool holder, wherein the sensor unit is integrated as a structural entity; tool or machine elements designed with such sensor modules; and a machining/machine tool comprising such a sensor module.

Description

Sensor module, machine or tool element and machine tool

description

The invention relates to a sensor module for a machine tool, a machine or tool element embodied with such a sensor module, and a machine tool that is designed with such machine or tool elements.

The term "machine or tool element" is in the following in general form a tool body or a tool for machining with geometrically determined and indefinite cutting edges and also rolls,

Deep-drawing tools or stamping tools of metal forming technology. Tool holders for such tool elements as well as guide and support elements of

Machine tools, such as carriages, understood that wear such tool elements and lead and that are adjusted with the tool element.

A generic tool holder is for example in the

Publications WO 2017/068158 A1 and DE 10 2006 030 834 A1. The tool holders disclosed there have a mechanical interface, for example a shuttle shaft cone (FISK), which in a manner known per se into a

Machine tool is used. On the tool side, the tool holder is designed with a clamping device, in which a machining tool, such as a milling cutter, a drill or the like can be used. For detecting states occurring during processing, such as the one

Force acting tool, accelerations (vibrations) of the tool holder and the temperature, for example, the cooling lubricant, or the tool, steady states of instability can be detected and then corrected accordingly by adapting the machining parameters, such as feed, speed. In this way, an excessive force on the tool or during the processing occurring vibrations can be minimized. The disadvantage of the existing solutions is that the sensors in one depending on the type of sensor and tool holder in different channels / pockets of the tool holder - also called tool holder - are used. This is the case in WO 2017/068158 A1

Hollow shaft taper with a special design required in the corresponding

Cavities / channels must be provided for receiving the sensor. Such a design requires a considerable device technology and

production engineering effort to produce the tool holder. In addition, the tool holder may need to be adapted. Another disadvantage lies in the application-specific design of the measurement technology and

Sensors - and thus for the detection of physical quantities, which always represents a very specifically designed solution for the particular application in the tool holder. Another characteristic or disadvantageous design has in common is that all solutions emanate from a detected steady state of physical quantities.

In contrast, the invention has for its object to further develop the sensor and / or the tool and machine elements of a machine tool that system states with low device and device

control engineering effort can be detected.

This task is accomplished by a sensor module with the characteristics of the

Claim 1 and by tool or machine elements according to the independent claim 5, which are designed with such a sensor module and solved by a machine tool according to the independent claim 21.

Advantageous developments of the invention are the subject of the dependent claims.

Accordingly, a non-stationary and in particular modular metrological solution is provided by the invention, which in particular in

Tool elements (e.g., grinding wheel bodies, cone seats of

Cutting tools, punching tools) or devices or in a tool-receiving machine tool are integrated, so that a Reliable detection of operating or system states in real time and thus already based on transient transitions of system states with low

Device-technical effort is possible. The modular design allows the design of a built-in module and the release of multi-criteria

Issues. Thus, by the inherent in this invention flexibility in the design of modules, a vibration sensor in a rotating machine part for the application can be conveniently positioned in the axis of rotation and the coolant flow are diverted constructively around this position. The resulting complex geometric shapes of the sensor modules are manufactured using the technologies of additive manufacturing and in the respective overall system, device, tool body or recording, the standardized sensor module used.

As stated above, the sensor modules can in principle be used in moving machine parts / elements such as carriages or devices, or else in tool bodies of tools for machining with geometrically determined and indefinite cutting edges. Furthermore, the use of the sensor modules also includes tools of the forming technology, such as dies, punching tools or rollers into which such sensor modules can be used

System states.

The sensor module according to the invention has a sensor, for example consisting of modular sensors for detecting occurring during processing

System states whose measurement signals are transmitted via a data transmission device to an evaluation unit. According to the invention, the sensor as a structural unit in a, preferably cartridge-shaped, sensor module, also referred to as "cartridge", integrated, which is inserted into a correspondingly formed recess of a tool holder or other tool or machine element. According to the invention, this sensor module on a

Feed slide, a device, a forming tool or a grinding wheel can be used.

According to the invention, it is thus provided that the sensors, that is to say at least the sensors required for detecting the operating states, are in a module or at least form as a structural unit and this centrally in a corresponding recess of a tool or machine element according to the invention - preferably interchangeable - use.

This design makes it possible to use the sensors with the sensor module

pre-assemble, test and then use in the tool holder or in the above-mentioned subsystems of a machine tool, so that the device engineering and manufacturing effort compared to the above-described solutions is significantly reduced. The inventive concept also makes it possible, depending on the manufacturing task, the tool or

To equip machine elements with different sensor modules, so that in each case one with respect to the tool used and the used

Production parameters optimized signal acquisition and associated

Process control is guaranteed. This applies in particular to the choice of sensors with regard to the detection of different physical quantities or the resolution and sensitivity of these sensors.

In one embodiment, as mentioned above, a mechanical

Interface of a tool holder with a clamping cone, for example, a HSK performed on the tool-side clamping device indicative of a sensor shaft is attached, in which the recess is formed for the sensor module. Neither machine-side nor workpiece-side interfaces must be structurally changed by this recess, should a sensor module be used or exchanged in the sense of intended flexibility. Such recesses (also called pockets, receptacles, chambers or the like) can

Of course, to the above-mentioned other tools and

Machine elements are provided to accommodate sensor modules. In principle it is also possible to provide a plurality of such recesses, which are provided as needed with one or more sensor modules.

The sensor module to be used in addition to the sensor, for example, to detect the introduction of force, temperature and acceleration

(Vibrations) is also provided for the signal processing required Sensor electronics and / or a transmission device, for example, a radio module and / or a power supply, such as record a battery.

In an alternative solution, the power supply and / or the

Signal transmission device and / or the sensor electronics in peripheral side

Pockets / recordings used while the other components, such as the sensors are integrated into the sensor module according to the invention.

The positioning of these components in the pockets / receptacles is optimized if they have a, for example, T-slot or dovetail-shaped,

Undercut are formed by the respective component

(Power supply, sensor electronics, signal transmission device, another sensor) preferably in the radial direction, fixed in position. Such an undercut can be formed for example by means of a T-slot milling cutter.

In the case of a tool element, this pocket, which has an undercut, can extend into the region of a gripper groove flange on which a gripper groove is formed.

The production of the undercut is particularly simple if such a flange as a separate component after forming the bag on a

Basic body of the machine or tool element is placed and covers the bag sections.

To simplify the mounting of the sensor module, a main body of the tool holder can be divided into two or more main body parts, which are connected to the base body after insertion or attachment of the sensor module or associated components.

In one embodiment, the division takes place in the region of a gripper groove. The attachment of the flange to the main body or the joining of the main body parts can be done for example by shrinking, soldering, welding or otherwise.

In a particularly preferred embodiment, the sensor module is arranged coaxially to the axis of the tool or machine element, for example, the tool holder or a tool spindle, so that the imbalance is minimized and further, the insertion of the sensor module is simplified. This arrangement is particularly favorable, especially since acceleration signals are not superimposed by centrifugal forces to a large extent.

In most cases, a tool holder with a

Coolant lubricant supply (KSM) carried out. According to the invention, in this modular solution at least a part of the KSM flow path through the

Sensor module extend therethrough. Here is in the sense of the above

Imbalance a symmetrical design possible.

In this case, for example, the sensor can be aligned at least partially axially with respect to the axis of the tool holder, so that a channel for guiding the KSM, the sensor is performed eccentrically circumferentially. In this case, the channel, for the symmetrical arrangement, it would be two opposite, for example

arcuate or be designed with a double S-shape.

According to the inventive concept, the recess for the

Sensor module in the axial direction or in the radial direction oriented to be executed in the machine or tool element. Accordingly, the sensor module is then inserted into the recess in the axial direction or in the radial direction.

The positional positioning of the sensor module with respect to the recess is simplified if this is carried out with a corresponding indexing. The sensor module can be received positively or non-positively in the recess. For example, the sensor module can be press-fitted.

According to an advantageous embodiment of the invention is provided the

Machine or tool element, for example, the tool holder or the tool body or the tool, at least partially produce in the area that receives the sensor module, according to a generative manufacturing process.

In such a generative process, the component to be manufactured is built up layer by layer from informal or shape-neutral material, for example sintered material, by utilizing physical and / or chemical effects. In a SLM (Selective Laser Melting) process, for example, metal powder is applied in layers and the layer is melted by means of a laser and fused with the underlying layers, so that even complex geometries with internal or external intersections can be formed.

In a further development of the invention, the production of the machine or tool element by a kind of hybrid processing, wherein at least a portion are conventionally made, for example by machining and then on this conventionally manufactured portion by a generative method, for example by means of 3D printing or the above-mentioned SLM method, the sensor module is at least partially receiving internal or external structure is formed.

The machine tool according to the invention is with the above

Sensor module or a tool or machine elements according to the invention equipped. The machine tool further has a data acquisition and evaluation unit, via which the measurement signals of the sensors can be processed in real time and are transmitted via the control signals-preferably via a real-time connection-to a machine tool controller for controlling process parameters. The Applicant reserves the right to set its own independent claim on the arrangement of the sensors in a radially extending recess.

Preferred embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

1 shows a tool holder according to the invention in a side view;

Figure 2 is a sectional exploded view of the tool holder of Figure 1;

Figures 3a, 3b variants of a sensor module shown in Figure 2 for

Inclusion of a sensor system;

Figure 4 shows another embodiment of an inventive

Machine tool;

Figure 5 is a schematic representation of a control / regulation concept executed with a tool holder according to the invention

Machine tool;

Figure 6 shows a variant of the embodiment of Figure 4, wherein a bag is designed with a Flinterschneidung;

Figures 7a, 7b, a further embodiment in which a gripper groove flange is designed as a separate component which is placed on a base body of the machine or tool element;

FIGS. 8a, 8b show a three-dimensional representation of the gripper groove flange and of the main body according to FIG. 7;

FIGS. 9a, 9b show a variant of the embodiment according to FIGS. 7 and

8th; Figures 10a, 10b is a three-dimensional representation of the embodiment of Figure 9 and

Figure 1 1 shows a variant of a tool holder with shared body.

In the following, a tool holder 1 is described by way of example, which is intended for use in a machine tool. In principle, however, such tool holders can also on any processing machines of

Cutting and the forming technology be provided to accommodate there process parameters such as forces, accelerations, temperatures, etc. It is next to the

Cutting as another example the detection of the shearing stroke in the

Punching is called by the sensor module in this application on

Cutting tool can be applied.

As stated above, other tool or

Machine elements with one or more of those described below

Be executed sensor modules.

Figure 1 shows a first embodiment of such a tool holder 1, this has as a mechanical interface to the machine tool formed on a base body 3 Flohlschaftkegel (FISK) 2, in a conventional manner two driving grooves 4, 6 on the actual cone 8, one on a gripper grooves Flange 10 executed gripper groove 12 and a not shown Indexiernut to

Simplification of an automatic tool change has. The structure of such HSK / adapter is known, so that further explanations are unnecessary. At the

Base body 3 is adjacent to the FISK 2, a sensor shaft 16 attached, which receives the reference to the figures 2 and 3 explained in more detail sensors. The measurement signals of this sensor are in the embodiment shown in Figure 1 via an antenna 18 and a not shown wireless module or another

Data transmission device to a machine tool-side evaluation transferred. As shown in FIG. 1, this antenna 18 can be arranged on the periphery in the region of the sensor shaft 16, and / or the collar 10, and / or the gripper groove 12. io

In the illustration according to FIG. 1 to the left of the sensor shaft 16 is on

Base body 3, a clamping device 20 is formed, on the in a conventional manner a dashed lines indicated tool 22 is tensioned.

Figure 2 shows a sectional exploded view of the tool holder 1 according to Figure 1, wherein the clamping means of the clamping device 20, and the actual coolant / lubricant supply are not shown in detail.

The above-described FISK 2, the sensor shaft 16 and the

Clamping device 20 are integral in the illustrated embodiment

educated. Of course, a modular design is possible in which the individual components are connected to each other via suitable connecting means.

In the area of the sensor shaft 16, a roughly cylindrical recess 26 connects to a flea space of the cone-shaped flute shank 24 of the HSK 2, which for its part merges into a tensioning device-side tensioning cone 28. In the approximately cylindrical recess 26, a cartridge shown in Figure 2 right, the sensor module 30, inserted and fixed non-positively or positively. In this case, the sensor module 30 can be held in the recess 26, for example via a press fit. For position positioning, the sensor module 30 with a

Index projection 32 be provided, the fit into a corresponding

Index exemption of the recess 26 engages. Of course, the projection may also be provided recess side.

According to the invention, a sensor 34 is accommodated in the sensor module 30. In the illustrated embodiment, this sensor 34 or at least one of the sensors is arranged approximately coaxially with the axis 36 of the tool holder 1. Also, the approximately cylindrical sensor module 30 is arranged coaxially with the axis 36. As shown in FIG. 2, the sensor module 30 is inserted through the cavity of the HSK 2. In the transition region to the latter, a connection 38 is formed in the sensor module 30, which can be brought into fluid communication with a tube 40 carrying cooling lubricant (KSM). This cooling lubricant is in the illustrated in Figure 2 Embodiment over an arcuately branching channel 42 passes around the sensor 34 within the sensor module 30 and then opens into an output port 44 in the region of the clamping device, so that the tensioned tool 22 is supplied with cooling lubricant. As described above, a favorable design is performed symmetrically, in which the sensor is surrounded by two channels.

In the exemplary embodiment illustrated in FIG. 2, the sensor module 30 contains, in addition to the actual sensor system 34, ie. h., for example one

Acceleration sensor, a temperature sensor and / or a

Strain gauge or other sensor for detecting a force input the associated sensor electronics, which is in signal communication with the visible in Figure 1 18 antenna. In the sensor module 30, a power supply, such as a battery pack can be integrated. In other words, with the exception of the antenna 18, all components required for signal detection and signal transmission to the antenna 18 are integrated in the sensor module 30, so that, for example, by replacing the sensor module 30, a sensor system optimized for the respective machining operation is used with the tool holder 1 unchanged can be.

FIG. 3 a shows a variant of the sensor module 30 according to FIG. 2. Similar to the previously described exemplary embodiment, the actual sensor system 34 is arranged with one, for example, in the region of the axis 36 (FIG. 2)

Acceleration sensor running. The channel 42 for carrying out the KSM is not branched in this embodiment, but U- or double-S-shaped designed so that the sensor 34 is bypassed by the channel 42. As in the previously described embodiment, this establishes fluid communication between the port 38 and an output port 44. Integrated in the sensor module 30 is in the illustrated embodiment further includes a power supply, which is formed for example by a battery pack 48. Not shown in Figure 3a is the actual sensor electronics, which is also integrated into the sensor module 30. This sensor electronics 50 is visible in the embodiment according to FIG 3b. Accordingly, this sensor electronics 50 is formed by a circuit board with the associated circuit. This sensor electronics 50 includes all

Components for data preprocessing, data transmission and control of the

Power supply. In FIG. 3b, connecting pins 52 for the antenna 18 are formed by way of example, via which the measuring signals detected by the sensor system are delivered to an evaluation unit described below.

Otherwise, the embodiment corresponds to that of Figure 3a, so that further explanations are unnecessary.

Figure 4 shows a variant of a tool holder 1, wherein the recess 26 is not oriented in the sensor shaft 16 in the axial direction, but in the radial direction.

That is, in this embodiment, the sensor module 30 or the sensors are inserted into the sensor shaft 16 in the radial direction. In this embodiment, the integration of the components into the sensor module 30 is minimized to the effect that in the radial recess 26 substantially only the sensor is used. The other components, such as the above-described sensor electronics, the antenna / transmission device and / or the power supply (battery pack 48) are arranged on the circumference of the sensor shaft 16. Flierzu, for example, circumferentially pockets 54, 56 may be provided, in which the respective components are used. To avoid imbalances, it may also be advantageous to axially arrange the power supply, for example the accumulator package. The energy supply can take place on the one hand via the accumulator package and / or via a magnetic field (induction) or the like.

The structure of the FISK 2 and the tensioning device 20 corresponds to the

above-described embodiment, so that reference is made in this regard to the above statements.

FIG. 5 shows a block diagram of the control regulation arrangement of a machine tool or another processing machine, which is designed with the tool holder 1 according to the invention. As stated above, the signal transmission of the preprocessed measuring signals received by the sensory tool holder 1 preferably takes place by radio transmission via a transmitter and the antenna 18. On the machine tool side, a receiver (transceiver) 58 is provided for receiving the data transmitted by radio. The

Regulatory arrangement does not allow an ad-hoc response yet

steady instability states. This is implemented by a real-time adaptation of processing parameters, such as feed, speed, etc., this adaptation depending on the process conditions, such as

for example, the vibration or the force input is implemented on the tool. These process states are detected by the sensory tool holder 1 according to the invention and transmitted to the control arrangement. This essentially consists of a data acquisition and evaluation unit 60, over which - as stated above - assesses the process stability and possibly editing parameters are changed, if this process stability does not meet the target. The receiver 58 (transceiver) is connected via a real-time channel 70 with this data acquisition and evaluation unit 60. A configuration of the evaluation unit 60 takes place via a configuration connection 62. The adaptation of the processing parameters takes place on the basis of the detected process states, which are evaluated by the evaluation unit. However, other machine-internal measurement data as well as data of an additional external sensor system or data from a process database 68 can enter the evaluation unit 60.

The evaluation unit 60 receives measurement data of the moving sensor module, in this case the rotating sensory tool holder 1, stores it in a buffer memory and processes various algorithms for the detection of process states in a timely manner. It also forms the interface to the named process database. The algorithms used are designed so that it is determined under which conditions an intervention in the NC control of the machine tool takes place. Some of the algorithms are determined from the measured data of the tool holder 1

Process states. Another part of the algorithms links these process states with processing parameters, such as material parameters,

User inputs and / or process database values to decide if an intervention is to be made. Another part of the algorithms adapts the Processing parameters based on this data. The process states preferably relate to the data currently measured in real time and not to collected data from other production runs. In addition, also under

Use of the approach of soft sensors from the measurement data of the

Tool holder 1 a conclusion on secondary process results such as the surface finish of the workpiece done.

The system is configured via a connection that is not necessarily real-time capable, for example via an OPC UA application and / or via the

Machine tool control, for example by means of M commands. The algorithms can be selected depending on the processing step (for example, roughing, finishing, fine finishing) and different component materials. It can also be changed intervention parameters in this way. In addition, when using several evaluation units, the linkage of the individual sensors to the corresponding algorithms and the resulting process parameters can be determined.

Via a real-time channel 70, the evaluation unit 60 with the

Machine tool control 66 coupled. This allows for ad hoc adjustment of machine feed and / or machine speed during machining. Typical applications are the prevention and / or detection of process errors, process instabilities, tool breaks and so on. A premature wear of the tool is recognizable - in the latter case, a signal to

Tool change generated. When a process instability or the like occurs, the processing parameters of the

Machine tool control 66 changed. In addition, machine data can also be transferred to the evaluation unit 60 in order to use it for analyzes.

About the process database 68 is a common documentation of process signals of the tool holder 1 with NC blocks, machine-internal

Measurement data and measurement data of additional external sensors and thus opens up the possibility to collect and utilize a variety of data essential for the machine control. These records allow complex Calculate and analyze relationships between process parameters and manufacturing results, so that it is possible based on such a process database 68 to optimize NC programs in terms of process stability.

The basic structure of the tool holder 1 shown in FIG. 6 largely corresponds to the exemplary embodiments illustrated in FIGS. 2 and 4, so that only essential components are explained to avoid repetition and, incidentally, reference may be made to the above description.

Accordingly, the tool holder 1 according to FIG. 6 has a clamping device 20 which is designed with an inner clamping cone 28. The clamping device 20 is followed to the right by a sensor shaft 16 at which - similar to the

Embodiment according to Figure 4 - an example oriented in the radial direction recess 26 is designed for the sensor module 30 described above. In the exemplary embodiment illustrated in FIG. 6, the recess 26 for receiving the sensor module 30 opens into two radially outer pockets 54, 56 into which a power supply or a transmission device or sensor electronics or an antenna or the like can be inserted.

The sensor shaft 16 is followed by a known FISK 2, wherein the gripper groove flange 10 with the gripper groove 12 is provided in the transition region.

In contrast to the exemplary embodiment explained with reference to FIG. 4, the pocket 54 does not terminate on the gripper groove flange 10, but according to FIG. 6 extends into the area encompassed by the outer circumference of the gripper groove flange 10. In particular in this area, an undercut 72 is formed, which contributes to the positional fixation of the component 54 to be inserted into this pocket. The

Undercut 72 can be formed for example by means of a T-slot milling cutter. The pocket 54 which extends deeply under the gripper groove 12 makes it possible to use a multiplicity of the common designs with the sensor electronics or others

Equip components. For producing the undercut 72 may

For example, the gripper groove 12 are milled in the region indicated by the reference numeral 74, so that then formed the groove by means of the T-slot milling cutter can be. By means of this undercut 72, a very simple geometric integration solution for positional positioning / fixing of the outer components of the sensor module is created.

FIGS. 7 a, 7 b show an embodiment in which the formation of the undercut 72 for the pocket 54 is simplified.

In the embodiment according to the figures 7a, 7b are the

Clamping device 20 with the clamping cone 28, the sensor shaft 16 and the HSK 2 formed by the main body 3. The gripper groove flange 10 with the gripper groove 12 is designed as a separate component, which is then placed after milling the pocket 54 with the undercut 72 on this base body 3, for example

is shrunk, wherein the axial position by relative positioning of a

End face 78 is predetermined to a contact shoulder 80. In the mounted state of the gripper groove flange 10 covers at least in sections the undercut 72 of the pocket 54. This split design with a base 3 and a

Gripper groove flange 10 offers extensive possibilities of pocket design and thus of the electronics integration. Also in the embodiment according to FIG. 7b, a milled-out region 74 can be provided in the region of the gripper groove 12 which opens into the undercut 72.

Figures 8a, 8b show three-dimensional representations of the base body 76 and the flange 10. One can clearly see in this illustration the milled area 74, which practically interrupts the gripper groove 12 and which extends into the pocket 54 with the T-slot-shaped formed there Undercut 72 extends. As can be seen in the illustration according to FIG. 8a, the pocket 54 extends into the region of the radial recess 26 into which the actual sensor module 30 is inserted. The width of the pocket 54 is slightly larger than that of the recess 26, so that a support surface 82 forms, to which the component, for example, the

Sensor electronics, can be placed. On the support surface 82 are

Mounting recesses 84, for example, threaded holes or the like, for fixing the sensor electronics or for the passage of signal lines

intended. The bag is made after the sectionally formed, T-slot shaped undercut 72 widened. The mounting recesses 84 are formed in this area, which also simplifies the insertion of the electronic component in the undercut 72.

The front side of the pocket 54 facing the HSK 2 in FIG. 8a is rounded. The milled out area 74 has a correspondingly rounded inner end face.

Figures 9a, 9b and 10a, 10b show a variant of the above-described embodiment. Here, an approximately annular circumferential stop collar 85 is formed on the base body 3, which is formed as a contact surface for the left in Figure 9b end face 86 of the flange 10 so that it is reliably fixed in position in the axial direction.

FIGS. 10a, 10b again show three-dimensional representations of FIG

Base body 3 and the flange 10. As can be seen from this illustration, the stop collar 85 is interrupted by the mouth region of the pocket 54 and, moreover, surrounds the main body 3, more precisely the sensor shaft 16.

Incidentally, the exemplary embodiment according to FIGS. 9a, 9b and 10a, 10b corresponds to the exemplary embodiment described above, so that more

Explanations are dispensable.

In the embodiments according to Figures 6 to 10 opens - as explained - the receptacle 26 for the sensor module 30 in the or the pocket (s) 54, 56. In principle, of course, the bag 56 or other pockets with a

Undercut to fix the position of an electronic component or the like executed. Instead of the described T-slot undercut can

Of course, other undercut forms, such as a dovetail-shaped undercut or the like are formed.

In the embodiments according to Figures 1 to 6, the base body 3 of the tool holder is monolithically designed as a single part. With reference to the figures 7 to 10 embodiments are explained, in which the gripper groove flange 10 with the gripper groove 12 is designed as a separate component and is then connected to the actual base body 3.

Figure 1 1 shows a variant in which the main body 3 is divided into two main body parts 88, 90, which complement each other to the main body 3. The gripper groove flange 10, in the area of which an inner peripheral surface of the main body part 88 extends to a receptacle 92 into which an axial projection 94 of the base body part 88 lying in FIG. This axial projection 94 has a radial shoulder 96 on which a

Ring end face 98 of the gripper groove flange 10 and the base body part 88 is seated, so that both basic body parts 88, 90 are positionally positioned relative to each other both in the radial direction and in the axial direction.

Before assembly of the sensor module 30 with the actual sensor 34, the base body 3 is divided, so that these components can be easily inserted into the axially open main body part 90. After assembly, the upper base body portion 88 is then placed and with the lower body portion 90th

connected.

This bonding can be done, for example, by shrinking, wherein the underlying body portion 90 is cooled, for example, with liquid nitrogen and / or connected by a cohesive process, for example by welding by laser or electron beam.

Instead of the above-described stepped Trennflächenverlaufs between the two basic body parts 88, 90, of course, a different course can be used. In complex solutions, the base body 3 can also be divided into more than two parts in order to simplify the assembly of the sensor module 30 in the recess 26. In principle, it is also possible to form the channels for guiding the KSM in a simple manner by dividing the base body 3 by forming a part of the channel structure in the parting plane on both sides, so that then in the above-described joining the base body parts 88, 90 and complex channel courses can be trained. Of course, the above-described division of the base body 3 can also be realized in the embodiments explained above. As explained above, the main body 3 of the machine or

Tool element or other device for receiving the sensor module 30 at least partially formed by a generative method, for example by laser sintering or by 3D printing technology. In the

above-described tool holder, for example, the cone part with the HSK and formed with the gripper groove 12 collar 10 are conventionally manufactured. The complex structure for receiving the sensor module 30 is then built up by means of the generative method on this blank.

In principle, it is also possible, the entire tool holder 1 with the

Base body 3, the cone 8, the collar 10 executed thereon and the gripper groove 12 form according to a generative manufacturing process.

Disclosed are sensor modules for e.g. a tool holder, in which the

Sensor system is integrated as a structural unit and with such sensor modules

executed tool or machine elements and a processing L / Verkzeugmaschine with such a sensor module.

LIST OF REFERENCES:

1 tool holder

2 hollow shank cones (HSK)

3 basic body

4 keyway

6 driver groove

8 cones

10 frets

12 gripper groove

16 sensor shaft

18 antenna

20 clamping device

22 tool

24 hollow shaft

26 recess

28 clamping cone

30 sensor module

32 index lead

34 sensors

36 axis of rotation

38 Connection KSM

40 coolant lubricant pipe

42 channel

44 output connection

48 accumulator package

50 sensor electronics

52 connection pins

54 bag

56 bag

58 receivers / transceivers

60 evaluation unit 62 configuration connection

66 Machine tool control

68 process database

70 real-time channel

72 undercut

74 milled area

78 face

80 contact shoulder

82 bearing surface

84 mounting recess

85 stop collar

86 left end face

88 basic body part

90 basic body part

92 recording

94 axial projection

96 radial shoulder

98 ring end face

Claims

claims

Sensor module for a machine tool or machining unit, with a sensor system (34) for detecting system or operating states occurring during machining of a workpiece (22), the measuring signals of which via a

Data transmission device to an evaluation unit (60) are transferable, wherein the constructed as a structural unit sensor module (30) is designed in a

Recess (26) of a tool holder (1) or

a tool body of a turning or milling tool or

a tool of the forming technique, such as a roller, a thermoforming tool or a

Punching tool or

in a recess on an adjustable with such a tool holder or such a tool element or this supporting machine element, such as a feed slide,

to be used.

2. Sensor module according to claim 1, in which a sensor (34), and / or sensor electronics (50) and / or the transmission device and / or a

Energy supply are integrated.

3. Sensor module according to one of the preceding claims, in which a channel (42) for carrying out cooling lubricant from the interface to the clamping device (20) is formed.

4. Sensor module according to claim 3, wherein the sensor (34) is at least partially disposed in a rotation axis and the channel (42), the sensor (34) is performed circumferentially.

5. Machine or tool element, preferably one

Tool holder (1), with a clamping device (20) for a tool (22) and with a mechanical interface for a machine tool or

Tool body of a turning or milling tool or a grinding wheel or Tool body of a forming tool, such as a roller, a deep-drawing tool or a punching tool or

Such a tool elements adjusting or supporting machine element of a machine tool, such as a feed slide,

with a recess (26) for receiving a sensor module (30) according to one of the preceding claims.

6. Machine or tool element according to claim 5, wherein the interface is a clamping cone, for example a hollow shaft cone (HSK) (2), to which the clamping device (20) towards a sensor shaft (16) is attached, in which the

Recess (26) is formed.

7. Machine or tool element according to claim 5 or 6, wherein a power supply and / or the transmission device and / or an antenna and / or a sensor electronics in peripheral pockets (54, 56) of a

Sensor shaft (16) are used.

8. Machine or tool element according to claim 7, wherein the pocket (54, 56) at least partially with a, preferably T-slot-shaped, undercut (72) is executed.

9. Machine or tool element according to claim 8, wherein the pocket (54, 56) extends into a region of a gripper flange (10) with a gripper groove (12).

10. Machine or tool element according to one of the claims 5 to 9, wherein the sensor module (30) is arranged with its axis approximately coaxial with an axis (36) of the tool or machine element (1).

11. Machine or tool element according to one of the claims 5 to 10, wherein the recess (26) axially or radially in the sensor shaft (16) or a component of the tool or machine element (1) is executed, so that the sensor module (30) axially or can be used radially.

12. Machine or tool element according to one of the claims 5 to 11, with an indexing for positional positioning of the sensor module (30) in the recess (26).

13. Machine or tool element according to one of the claims 5 to 12, wherein the sensor module (30) non-positively or positively in the recess (26) is arranged.

14. Machine or tool element according to one of the claims 5 to 13, wherein the tool holder (1) or the tool body or the

Machine element has a base body (3), which is used for insertion or attachment of the

Sensor module (30) or associated components is divided, wherein basic body parts (88, 90) after insertion or attachment to the main body (3) are connectable.

15. Machine or tool element according to claim 14, wherein the base body (3) in the region of a gripper groove (12) is divided.

16. Machine or tool element according to claim 14 or 15, wherein the gripper flange (10) is applied as a separate component on a base body (76).

17. Machine or tool element according to one of the claims 14 to 16, wherein the abutment region of the basic body parts (88, 90) is stepped in the region of the division.

18. Machine or tool element according to one of the claims 14 to 17, wherein the connection is made by material connection and / or adhesion.

19. Machine or tool element according to one of the claims 5 to 18, wherein at least one base body (3), in which at least partially the sensor module (30) is received, is produced by a generative manufacturing process.

20. Machine or tool element according to claim 19, wherein at least a part of the tool holder (1), the tool body or the

Conventionally, for example, by machining, wherein the recess (26) for receiving the sensor module (30)

bounding walls at least in sections after the generative

Manufacturing processes are manufactured.

21. Machine tool with a tool or machine element according to one of the claims 5 to 20, which comprises a data acquisition and evaluation unit

(60) has, over which the measuring signals of the sensor (34) processable and on the in

Real time control signals are generated to a machine tool controller (66) for controlling process parameters.