EP4121826A1 - Procédé de détermination d'un état d'usure d'un outil et dispositif associé - Google Patents

Procédé de détermination d'un état d'usure d'un outil et dispositif associé

Info

Publication number
EP4121826A1
EP4121826A1 EP21713593.8A EP21713593A EP4121826A1 EP 4121826 A1 EP4121826 A1 EP 4121826A1 EP 21713593 A EP21713593 A EP 21713593A EP 4121826 A1 EP4121826 A1 EP 4121826A1
Authority
EP
European Patent Office
Prior art keywords
wear
tool
cutting edge
test
sacrificial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21713593.8A
Other languages
German (de)
English (en)
Inventor
Pierre Abel
Gustav Werthwein
Uli Werthwein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avantec Zerspantechnik GmbH
Original Assignee
Avantec Zerspantechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avantec Zerspantechnik GmbH filed Critical Avantec Zerspantechnik GmbH
Publication of EP4121826A1 publication Critical patent/EP4121826A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4065—Monitoring tool breakage, life or condition
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37258—Calculate wear from workpiece and tool material, machining operations

Definitions

  • the invention relates to a method for determining the state of wear of a tool, in particular a tool based on hard metal, and a device therefor.
  • the tool has a cutting edge, the state of wear of which is determined by means of the method. If the tool is a multi-edged tool, the state of wear of at least one cutting edge is determined which is currently in a ready-to-use setting or position.
  • Milling processes with tools based on hard metal are used for workpiece machining.
  • the workpiece is machined using a defined cutting edge of the hard metal-based tool.
  • a geometrically defined chip is generated when the workpiece is machined.
  • the tools used and the workpieces to be machined can consist of very different materials. Accordingly, a material pairing is created that can vary greatly depending on the material of the tool and the material of the workpiece. This results in various physical parameters, such as parameters relevant to tool wear and tear.
  • the economic and technical service life, also known as the service life, of tools made from a cutting material is determined by the degree of wear of the cutting material.
  • optical monitoring methods are known in which the cutting edge of the tool is observed by means of a camera.
  • the contour of the cutting edge is compared with specified patterns or dimensions in order to identify a maximum state of wear. If it is detected that the maximum state of wear has been reached, the tool is changed by outputting a corresponding signal or related information. If the tool is a multi-edged tool, the cutting edge is changed. It is also known to measure the temperature on the cutting edge in order to draw conclusions about the degree of wear of the cutting edge. It is also known that force or torque measurements take place.
  • An analysis of the important failure types of a cutting edge of a tool shows that the effects of the failure types on the tool can be very different. The main types of failure are flank wear, crater wear, cutting edge breakage, build-up wear and crack formation.
  • One embodiment of the invention relates to a method for determining the state of wear of a tool and / or at least one cutting edge, in particular a tool which is used for machining a workpiece
  • Test measurement is carried out with test processing, the test processing being monitored by means of at least one measuring device with at least one sensor and measured values of the test measurement being storable in a memory, with at least one further test measurement after a defined processing of workpieces by means of the tool or by means of the at least one cutting edge is carried out with a test processing on the sacrificial workpiece, which is also monitored by the measuring device with the at least one sensor and measured values of the test measurement can be stored condition of the tool and / or the at least a cutting edge is determined.
  • a wear condition of the tool can thus be determined from a comparison of stored measured values from the new condition with measured values from a current condition after workpieces have been machined.
  • the state of wear is differentiated according to a state of wear of the following types of wear / failure: flank wear, crater wear, built-up edge, crack formation and / or broken cutting edge. Accordingly, the state of wear is specifically assigned to the most likely types of wear / failure, so that the further course of wear can be better estimated when the tool is used further.
  • the state of wear is determined from a respective state of wear from flank wear, crater wear, built-up edge, crack formation and / or a broken edge.
  • an individual wear condition according to the mentioned types of wear or failure types is merged in order to determine a general wear condition which takes into account the considered types of wear / failure as a whole.
  • test measurement with the test processing is carried out separately for each type of wear / failure considered.
  • various test measurements with test machining operations are carried out on different sacrificial materials with different machining parameters.
  • the machining parameters of the respective test machining are adapted to the type of wear / failure to be detected. In this way, specific consideration can be given to the respective type of wear / failure in their behavior.
  • the test measurement is carried out with the test machining for each type of wear / failure considered on a sacrificial workpiece provided for this purpose. In this way, specific consideration can be given to the respective type of wear / failure in their behavior.
  • test measurement is carried out with the test machining for each type of wear / failure considered with the machining parameters provided for this. In this way, specific consideration can be given to the respective type of wear / failure in their behavior.
  • the state of wear is determined by comparing stored measured values and / or stored processed measured values from test measurements on at least one sacrificial workpiece. A reliable determination of the state of wear can thus be made.
  • processed measured values have or are temporal first derivatives and / or second derivatives of measured value progressions. This makes it easier to identify even small deviations.
  • One embodiment of the invention relates to a device for determining a wear state of a tool and / or at least a cutting edge, in particular a tool which is used for machining a workpiece, with a tool with at least one cutting edge for machining a workpiece, with a measuring device with at least one sensor for monitoring a test measurement with test machining and with at least one sacrificial workpiece for performing the Test measurement with test processing on the sacrificial workpiece, in particular for carrying out a method according to the invention.
  • sacrificial workpieces in particular two or three sacrificial workpieces, made of different sacrificial materials are provided for the determination of a wear condition according to flank wear, crater wear, built-up edge, crack formation and / or a broken edge.
  • a combined sacrificial workpiece can also be provided, which has several sacrificial materials.
  • the cutting forces should increase due to the expected flank wear, whereby through the expected crater wear the cutting forces should decrease, which would lead to an opposite effect with regard to the cutting forces, so that in the extreme case of compensating cutting force curves would lead to a constant cutting force, although both the surface wear and the crater wear would increase.
  • Fig. 1 is a schematic representation of an inventive
  • FIG. 1 shows a schematic representation of a device 1 with a tool 2 with at least one cutting edge 3, in particular with several cutting edges 3, which is used for machining a workpiece 4, in particular for milling the workpiece.
  • At least one first drive 5 is provided in order to set the tool 2 with its at least one cutting edge 3 or with its several cutting edges 3 in rotation in order to be able to provide the speed of the tool 2 required for the milling process.
  • the speed of the tool 2 can be controlled by means of the first drive 5, in particular between zero and a maximum speed nMaxl.
  • At least one first actuator 6 is provided in order to be able to move the tool 2 with its at least one cutting edge 3 or with its several cutting edges 3 relative to the workpiece 4. It makes sense here if the tool 2 can, in particular, be pivoted and / or moved in a movable manner about at least three axes.
  • the pivoting speed and / or the travel speed can be controlled by means of the at least one first actuator 6, in particular between zero and a maximum pivoting speed and / or a maximum travel speed or also called cutting speed.
  • the tool 2 is held exchangeably in a tool holder, which can be rotatably driven and / or pivoted and / or moved by means of the at least one first drive 5 and / or the at least one first actuator 6, so that the tool 2 can be rotated, pivoted and / or moved accordingly. or is movable.
  • the workpiece 4 is held in a workpiece holder 7.
  • the workpiece 4 and / or the workpiece holder 7 with the workpiece 4 can optionally be rotationally drivable by means of a second drive 8 and / or pivotable and / or displaceable by means of at least one second actuator 9.
  • at least one second drive 8 can optionally be provided in order to be able to set the workpiece 4 in rotation.
  • the speed of the workpiece 4 can be controlled by means of the second drive 8, in particular between zero and a maximum speed nMax2.
  • at least one second actuator 9 can optionally also be provided in order to be able to move the workpiece 4 relative to the tool 2. It is useful if the workpiece 4 can be pivoted and / or moved about at least three axes.
  • the pivoting speed and / or the travel speed can be controlled by means of the at least one second actuator 8, in particular between zero and a maximum pivoting speed and / or travel speed.
  • a holding device 10 is provided, by means of which a sacrificial workpiece 11 can be held.
  • the sacrificial workpiece 11 is used for the tool 2 to machine the sacrificial workpiece 11 with the at least one cutting edge 3 in order to monitor this test machining by means of sensors 12.
  • the data from the sensors 12 relating to the test processing are stored, for example, in a memory 13 of a control unit 14 taking over the control and compared with further test measurements in order to determine a wear state of the tool 2 and / or the at least one cutting edge 3 or the cutting edges 3.
  • the state of wear of a tool 2 or a cutting edge 3 or cutting edges 3 is determined, for example, in direct comparison with the new condition of tool 2, cutting edge 3 or cutting edge 3.
  • the state of wear can be determined in relation to the specific type of wear / failure.
  • test machining steps are carried out as test millings on the sacrificial workpiece 11.
  • the measured values of physical quantities determined by means of the sensor or sensors 12 this new condition are saved as a reference pattern for the new condition.
  • a test measurement or test measurements which is or will be carried out on the sacrificial workpiece 11, is or will be carried out again after workpieces have been processed.
  • measured values are again recorded by the sensor 12 or the sensors 12 in order to compare them with the measured values of the new condition.
  • explicit attention is not only paid to the absolute values of the measured values in the evaluation, but the time course of the measured values can also be taken into account.
  • Both the absolute value of measured values and / or the time course of measured values can be used for the evaluation. For example, a development and / or an impending failure probability can be determined or concluded.
  • test measurements In the case of repeated test measurements on the sacrificial workpiece 11, correspondingly repeated measured values are taken which are assigned to the respective test measurement.
  • Such test measurements can be recorded at regular and / or at irregular intervals and / or as a function of events in order to determine the respective state of wear of the tool 2 and / or the cutting edge 3 and / or the cutting edges 3 at the time of the test measurement.
  • a comparison is made between the measured values of the corresponding test measurement with the measured values of the test measurement when new. In this way, a state of wear can be determined. A development of wear conditions over time can also be determined if data from various test measurements are evaluated. Optionally, a comparison between different test measurements can also advantageously be carried out with one another in order to identify a development of wear conditions.
  • a test measurement in the new condition can be carried out with test measurements relating to a current wear condition, these test measurements being carried out accordingly with a tool which is currently in use when machining workpieces 4.
  • the course of values depending on the period of use of the tool is also advantageous in order to be able to derive a qualified statement about the state of wear of the tool 2, the cutting edge 3 and / or the cutting edge 3.
  • Specific materials and / or specific process parameters and / or specific milling methods, in which the measured values on the sacrificial workpiece 11 are recorded, are used to determine the state of wear with regard to the respective individual types of wear / failure considered.
  • the specific milling processes can be used at a defined cutting speed, rotational speed, feed rate, with up-cut / up-cut milling and / or up-cut / down-cut milling in order to determine the respective specific wear condition.
  • the materials used as the sacrificial workpiece 11 and the process parameters and / or milling methods used in the test measurements can be different for the optimal determination of the respective wear state with regard to the type of wear / failure considered, so that it is advantageous if depending on the type of wear considered Wear / failure mode a different or adapted sacrificial workpiece 11 is used and different or adapted process parameters and / or milling methods are used. It is therefore advantageous if a method for determining a wear condition is optionally defined for the method according to the invention, in which a corresponding measurement is carried out as a reference cut for each wear / failure type considered when a new tool 2 is used as a cutting tool.
  • three test measurements are carried out in the new condition as reference cuts, one reference cut for each possible type of failure considered, each with specific parameters and / or specific milling process on a specific sacrificial workpiece 11.
  • measured values are recorded in each case by means of at least one sensor 12, with in particular a time profile of the measured value being recorded during the test measurement and thus the absolute values of the measured values being determined.
  • the change in the course of the measured value over time, the first derivative as a function of time and / or the second derivative of the measured value as a function of time can optionally also be determined additionally or alternatively.
  • test measurements during processing, such as milling, on the individual available sacrificial materials can be compared with the respectively specified framework conditions, as recorded in the first test measurement in the new condition, and the course or the Processes of the measured values can be determined or updated in the sense of a history.
  • test measurements are carried out on specific sacrificial materials depending on the types of wear / failure considered.
  • the sacrificial materials used can be arranged on the same measuring device with the provided sensors 12, provided that comparable signals / physical quantities are used to determine the specific wear condition. If several different signals / physical quantities are required, several measuring devices with corresponding sensors 12 can also be used.
  • a multifunctional measuring device with various sensors 12 for determining different signals / physical quantities which are used to determine the state of wear would also be advantageous.
  • a provided evaluation unit 15, which can be designed as the control unit 14, for example, or which can also be provided as a separate evaluation unit 15, it is possible, on the basis of the measured values determined and their temporal progression, to determine first derivatives and / or second derivatives as values and / or or their temporal progressions to recognize the respective tool condition or wear condition depending on the specific wear / failure type and / or the specific failure probability.
  • the overall condition of the tool and the probability of failure can also be recognized using defined algorithms.
  • the different measured values and / or wear states per wear / failure type are processed together and, depending on the overall result of this processing, a recommendation for the remaining use and / or further use of the tool, the cutting edge 3 and based on the individual results for each wear / failure type / or the cutting edges 3 are output.
  • a recommendation can be made according to which the cutting speed should be reduced, the feed should be increased or an immediate tool change or cutting edge change should be carried out.
  • the provided measuring device with the at least one sensor 12 with the clamped sacrificial materials is designed individually for each type of wear / failure.
  • the measuring devices can also form a technical unit.
  • the measuring device with the arranged or stretched sacrificial materials can also be designed as a multifunctional element and form a technical unit.
  • the measuring device with the arranged or stretched sacrificial material or with the arranged or stretched sacrificial materials as an independent, in particular preassembled, unit in a processing room of a device for processing workpieces, such as a machine tool can be arranged.
  • the measuring device can be arranged on a machine table of the device for machining workpieces or can be integrated into the machine table.
  • the sensors for the function of measuring the signals and / or physical variables during the test processing of the sacrificial workpiece 11 from the sacrificial material i.e. the measuring device, and the clamping of the sacrificial workpiece 11 or the sacrificial workpieces 11 from the sacrificial material or of the sacrificial materials in one array or in two separate arrays or units are housed.
  • the measuring device can for example be arranged between the tool and a drive unit, such as a drive spindle.
  • a tool with at least one cutting edge 3 can be identified by using at least one sensor 12 and the wear state or states of wear can be stored individually for each type of wear, which is particularly advantageous for tools that are only used temporarily.
  • the senor 12 could also be arranged in the drive train, in particular between the drive 5 and the actuator 6.
  • the tool according to the invention is in particular a multi-edged milling tool, the cutting edges being based on a hard metal.
  • the tool and / or the cutting edges are advantageously designed to be exchangeable.
  • the tools are highly positive tools.
  • the use of highly positive tools means the use of tools with a decreasing rake angle or with a smaller rake angle compared to conventional tools with conventional rake angles.
  • the development towards highly positive tools, i.e. with a decreasing rake angle means that different advantages can be used in machining with the use of highly positive tools. Above all, these advantages are significantly reduced cutting forces. Due to the lower cutting resistance due to the reduced angle, a lower energy consumption is generated during cutting, which results in a significantly reduced heat absorption on the workpiece to be cut and also on the tool. As a result, the thermal expansion is lower and the accuracy of the method increases. at Roughing processes can therefore be expected to have a significantly higher machining volume per unit of time with comparable heat absorption on the workpiece. Likewise, less drive energy is advantageously required.
  • the method according to the invention for determining a state of wear of a tool therefore offers the possibility of better monitoring the use, in particular, of highly positive tools and of predicting or estimating their wear or failure before damage occurs to the workpiece. This has the advantage that the market penetration of highly positive tools can be accelerated with the advantages mentioned.
  • the possible types of failure or types of wear considered are, for example, cutting edge breakage, flank wear, crater wear, built-up edge formation and / or crack formation. These types of wear or failure are examined in more detail below.
  • a cutting edge break occurs when the tool is under too high a mechanical load. This type of wear can also occur as a result of other types of wear. Crater wear, built-up edge formation, high flank wear and / or other process-influencing elements, such as vibrations or incorrectly selected cutting parameters, can lead to cutting edge breakage. Also can an inhomogeneity of the hard metal lead to local breakouts. For example, in the case of abrasive materials, if the Co content in the hard metal is too low, breakouts can occur on the cutting edge of the cutting edge.
  • Adequate countermeasures should be taken to avoid cutting edge breakage.
  • a tool for example an indexable insert, with a defined cutting geometry cannot be used equally well for all materials.
  • the cutting edge break is the result of an excessively stressed cutting edge and can be seen as the last resort for all of the following types of wear.
  • the cutting edge breakage is to be avoided in all machining operations.
  • the cutting parameters are decisive for this. These should be adjusted in good time when wear begins.
  • a brittle material with good transmission of structure-borne noise can be used.
  • up-cut milling can be performed, which generates a pronounced signal peak when the cutter edge enters the workpiece.
  • Normal feed rates and cutting speeds specific to the sacrificial material can be used.
  • a structure-borne sound measurement that is to say a vibration measurement and / or a structure-borne sound in combination with a force measurement and / or also in combination with optical monitoring, for example by means of a camera system, can be carried out for sensing.
  • Flank wear is one of the most common types of wear in machining. This type of wear usually occurs when the actual clearance angle is too small, with abrasive materials or when the selected cutting speed is too high. Flank wear occurs very often during finishing, since the cutting speed is high and the feed rate is low during finishing. Due to the high cutting speed, the temperature rises and microparticles of the flart metal dissolve in the cutting material. In addition, the friction between the cutting edge and the material increases, as the tool is engaged for a longer period of time due to the low feed rate.
  • the solution and example is to reduce the cutting speed.
  • the cutting speed is reduced, for example.
  • the cutting speed can be reduced from 240 m / min to 210 m / min. This optimization can increase the service life by 25%.
  • a ductile / soft material can be used as the sacrificial material, possibly also a plastic composite material.
  • a counter-rotation process for example with a gentle entry with an increase in the chip thickness and the cutting forces, can be carried out. With increasing flank wear, the material tends to "smear away". The boundary can be detected much better with soft material.
  • Very low feed rates can be used here.
  • a low cutting speed and possibly also driving through a speed scale can be used.
  • a force measurement can be carried out.
  • Crater wear is thermal diffusion that occurs as a result of mechanical abrasion between the workpiece and the tool on the rake face. This type of wear is an indication of a too high one
  • crater wear can usually be reduced or avoided. Machining a flange made of steel 1.4301 at a selected cutting speed of 180m / min causes crater wear to occur at an early stage. The addition of cooling lubricant and the reduction of the cutting speed to 120 m / min eliminates crater wear and increases the service life by 30%.
  • a tough material can be used as a sacrificial material.
  • a counter-rotation process can be used, for example with a gentle entry with an increase in the chip thickness and the cutting forces. Normal feed rates can be used for this. It can be specific
  • Cutting speeds can be used depending on the sacrificial material.
  • a force measurement or optionally a force measurement in combination with optical monitoring can be used. This can be checked, for example, on a sacrificial workpiece made of a sacrificial material with steel 1 .4301 or 1 .2738.
  • Built-up edge If the cutting speed is too low or the tooth feed rate is too low, this can lead to a built-up edge. This leads to material sticking to the rake face of the tool. Especially with tough materials such as stainless steels, aluminum and steels with a low carbon content can lead to the formation of built-up edges.
  • a tough material can be used in a counter-rotating or synchronizing method.
  • Normal feed rates can be used, for example normal cutting speeds specific to the sacrificial material.
  • a force measurement or optionally a force measurement in combination with optical monitoring can be used.
  • the cracking of the tool during machining is considered.
  • a crack in a tool tends to expand into the open area. After the crack has grown, neither the cutting edge nor the contact surface is functional.
  • the built-up edge formation is one of the most common causes of crack formation during the machining process.
  • the chips stuck to the cutting edge absorb the cutting forces and at the same time store the high levels of heat. Accordingly, they cause the crumbling on the cutting edge.
  • the chips penetrate the cracks and create undefined stresses that further influence the course of the crack formation. Strong temperature changes and the constant cutting in and out during milling result in so-called comb cracking on the cutting edge.
  • the following measures can be taken to counteract the formation of cracks and comb cracks: If cracks form due to high mechanical loads, the tooth feed should be reduced so that the fatigue strength of the cutting material remains. In the event of crack formation due to built-up edge, the countermeasures for avoiding built-up edge must be applied, see above under the topic of built-up edge formation. In the event of comb cracks, measures can be taken against temperature fluctuations. Dry machining or sufficient cooling lubricant supply as well as a reduction in the cutting speed can help.
  • the cutting speed has been increased to 240 m / min. This measure extended the tool life to 74 m / cutting edge.
  • the resulting increase in temperature in the milling process defined the new end of service life due to crater wear.
  • the goal was to use an average cutting speed of 200 m / min.
  • the new end of service life could be increased to 81 m / cutting edge thanks to process-reliable open surface wear.
  • a brittle material with good structure-borne noise transmission can be used as a sacrificial material. Up-cut milling can be used. In particular, low feed rates can be used that are specific to the selected sacrificial material.
  • a structure-borne noise measurement, such as a vibration measurement, can be carried out.
  • a test processing can be carried out on the corresponding sacrificial materials under the specified process conditions.

Abstract

L'invention concerne un procédé de détermination d'un état d'usure d'un outil (2) et/ou d'au moins un bord de coupe (3), en particulier d'un outil (2), ledit outil/borde de coupe étant utilisé pour usiner une pièce à usiner (4), une mesure de test impliquant un usinage par test étant effectuée sur au moins une pièce sacrificielle (11) dans un nouvel état de l'outil (2) ou du ou des bords de coupe (3), l'usinage par tesrt étant surveillé au moyen d'au moins un appareil de mesure avec au moins un capteur (12) et des valeurs mesurées de la mesure de test peuvent être stockées dans une mémoire (13), dans laquelle, suite à un usinage défini de pièces à usiner (4) au moyen de l'outil (2) ou du ou des bords de coupe (3), au moins une autre mesure de test impliquant un usinage par test est réalisée sur la pièce sacrificielle (11), ceci étant également surveillé par l'appareil de mesure avec le ou les capteurs (12), et des valeurs mesurées de la mesure de test peuvent être stockées, une condition d'usure de l'outil (2) et/ou du ou des bords de coupe (3) étant déterminée sur la base des valeurs de mesure déterminées. La présente invention concerne également un dispositif (1) associé.
EP21713593.8A 2020-03-17 2021-03-16 Procédé de détermination d'un état d'usure d'un outil et dispositif associé Pending EP4121826A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020203375.7A DE102020203375A1 (de) 2020-03-17 2020-03-17 Verfahren zur Bestimmung eines Verschleißzustandes eines Werkzeuges und Vorrichtung hierfür
PCT/EP2021/056650 WO2021185820A1 (fr) 2020-03-17 2021-03-16 Procédé de détermination d'un état d'usure d'un outil et dispositif associé

Publications (1)

Publication Number Publication Date
EP4121826A1 true EP4121826A1 (fr) 2023-01-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21713593.8A Pending EP4121826A1 (fr) 2020-03-17 2021-03-16 Procédé de détermination d'un état d'usure d'un outil et dispositif associé

Country Status (3)

Country Link
EP (1) EP4121826A1 (fr)
DE (2) DE102020203375A1 (fr)
WO (1) WO2021185820A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509126A (en) * 1982-06-09 1985-04-02 Amca International Corporation Adaptive control for machine tools
DE4308246C2 (de) 1993-03-16 1998-06-10 Guntram Dipl Ing Hoerdemann Verfahren und Vorrichtung zur Überwachung und Steuerung von Bearbeitungsmaschinen
DE10015005A1 (de) 2000-03-20 2001-10-18 Georg Wendland Einrichtung zur Online-Messung des Werkzeugverschleisses beim Spanen von abrasiven Materialien
FR2828424B1 (fr) * 2001-08-07 2004-01-16 Sarl Digital Way Dispositif de controle de l'usure et/ou du bris d'outil pour machine outil
US20080161959A1 (en) * 2006-12-01 2008-07-03 Jerard Robert B Method to measure tool wear from process model parameters
JP2013071187A (ja) * 2011-09-26 2013-04-22 Hitachi Ltd 工具経路算出装置、工具経路算出方法、及び加工装置
JP6649348B2 (ja) 2017-11-21 2020-02-19 ファナック株式会社 工具寿命判定装置

Also Published As

Publication number Publication date
WO2021185820A1 (fr) 2021-09-23
DE112021001657A5 (de) 2023-01-19
DE102020203375A1 (de) 2021-09-23

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