EP4234162A1 - Rectifieuse d'extrémités de ressorts - Google Patents

Rectifieuse d'extrémités de ressorts Download PDF

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Publication number
EP4234162A1
EP4234162A1 EP23168245.1A EP23168245A EP4234162A1 EP 4234162 A1 EP4234162 A1 EP 4234162A1 EP 23168245 A EP23168245 A EP 23168245A EP 4234162 A1 EP4234162 A1 EP 4234162A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
grinding
sensor
grinding machine
information
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
EP23168245.1A
Other languages
German (de)
English (en)
Inventor
Gabriella Kunz
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.)
Officina Meccanica Domaso SpA
Original Assignee
Officina Meccanica Domaso SpA
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 Officina Meccanica Domaso SpA filed Critical Officina Meccanica Domaso SpA
Priority to EP23168245.1A priority Critical patent/EP4234162A1/fr
Publication of EP4234162A1 publication Critical patent/EP4234162A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/167—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings end faces coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/006—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders

Definitions

  • the invention relates to a spring end grinder according to the features of claim 1 and a method for controlling a spring end grinder according to the features of claim 14.
  • Spring end grinding machines are well known from the prior art. For example, it will refer to the EP 2 926 949 referred.
  • the grinding process for grinding down spring ends requires a high level of know-how, in particular to prevent the springs from getting too hot in the grinding process. Excessive heat generation during the grinding process also damages the grinding wheels and other components of the spring end grinding machine, in particular a sliding plate used to transfer a loading plate.
  • the aforementioned prior art also proposes an improved flow of cooling air in this regard.
  • the present invention proposes a spring end grinding machine with the features of claim 1 and a method for controlling a spring end grinding machine according to the features of claim 14.
  • Advantageous developments are specified in the dependent claims.
  • a sensor that is integrated in the grinding wheel makes it possible to monitor the grinding process more precisely with regard to certain parameters, such as temperature and/or abrasion of the grinding wheel, and advantageously to use the information obtained in this way to directly monitor the grinding process itself, for example act to save this information for the documentation of the grinding process or to provide this information for storage in a knowledge database and / or to take into account in future grinding processes or to improve a conventional spring end grinding machine, in particular Use a spring end grinding machine or use a conventional grinding wheel to improve it.
  • the sensor integrated in the grinding wheel can in particular be permanently connected to the grinding wheel, for example to the grinding body or the grinding layer.
  • the sensor rotates with the grinding wheel and can also be designed to be partially integrated into the grinding layer.
  • Grinding wheel information can relate to the grinding wheel (grinding wheel parameters), the workpieces (workpiece parameters) and/or the grinding process (grinding process parameters).
  • Stored data containing grinding wheel information may be referred to as grinding wheel data.
  • Stored grinding process data contain, in particular, grinding process parameters
  • stored workpiece data contain, in particular, workpiece parameters.
  • the transmission between the sensor and the processing unit can be wireless or wired.
  • at least two preferably electrical lines are routed via a rotating or sliding contact over the shaft of the grinding wheel.
  • the at least two electrical lines can both take over the power supply and be used modulated for the data exchange.
  • the sensor it is also possible for the sensor to work via a self-sufficient power supply or for the power supply to be provided inductively according to the principle of a generator by the rotation of the grinding wheel.
  • the signal transmission between the sensor and the processing unit preferably takes place wirelessly, so that a one-way or bidirectional wireless communication is created between the sensor and the processing unit.
  • this control command can readjust or feed the grinding wheel or grinding wheels, switch a coolant flow or a cooling air flow on or off, an increase or reduction in the number of revolutions of the grinding wheels, a movement/movement of the loading plate (feed loops), an adjustment of the speed of rotation of the loading plate (continuous loops); adjustment of the tilting angle of the grinding wheels (through-feed grinding) or any other change in the grinding process.
  • the grinding wheel information includes a characteristic value for the type of grinding wheel.
  • a characteristic value for the type of grinding wheel In particular, an assignment of grinding wheel parameters that are specific to the grinding wheel in question is made possible via the characteristic value.
  • the grinding wheel information can also contain grinding wheel parameters that are specific to the respective grinding wheel.
  • the type of grinding wheel, the date of manufacture, a maximum usage date, a maximum abrasion, dimensions, a material and/or service life of the grinding wheel and/or other specific information or grinding wheel parameters can be contained in the grinding wheel information.
  • These specific grinding wheel parameters can be stored in the processing unit or called up via the processing unit.
  • the grinding wheel can, for example, comprise an RFID transponder, in which the characteristic value for the type of grinding wheel is encoded.
  • a sensor is designed as a thermocouple and/or a sensor is designed as an infrared sensor. More preferably, at least one pair of electrodes of the thermocouple or a light guide can be aligned in the essentially axial direction of the grinding wheel, in particular accommodated in the grinding wheel body in this alignment. Provision can be made for the electrodes to extend as far as the grinding surface and in this respect the electrodes also experience a physical change as a result of abrasion of the grinding layer, so that, for example, the resistance value that can be detected in this respect changes. In the case of a thermocouple, the pair of electrodes are made of different materials.
  • the electrodes of the thermocouple can be connected to an oscillating circuit, in which case a degree of abrasion of the grinding wheel can be determined in particular on the basis of a detected resonance signal of the oscillating circuit.
  • the oscillating circuit can be integrated into evaluation electronics of the sensor. This is particularly influenced by the length of the electrodes (which wear down over the grinding period). Vibration behavior or resonance behavior of the oscillating circuit, whereby conclusions can be drawn about the (previous) abrasion of the grinding wheel.
  • the thermal radiation can be transmitted to a detection unit of the sensor by means of a light guide.
  • a sensor can include a piezoelectric element and can be designed in particular as an ultrasonic sensor.
  • a signal correlating with the abrasion can be determined with an ultrasonic sensor.
  • the senor can also be designed as a speed sensor or comprise a speed sensor.
  • the speed sensor can be designed, for example, as an acceleration sensor and/or as a Hall sensor for detecting the number of revolutions of the grinding wheel.
  • the accumulated number of revolutions of the grinding wheel can be regarded as a measure of the probable wear of the grinding wheel.
  • the senor can also detect an imbalance in the grinding wheel and in this respect can be designed as an acceleration sensor, for example.
  • an imbalance sensor can be integrated in the grinding wheel and/or in the spring-end grinding machine. The data recorded or derived from this can be created in the grinding wheel or the spring-end grinding machine or passed on externally, for example to an external server.
  • the grinding wheel can also have an evaluation unit that is designed to process sensor signals generated by the sensor that contain grinding wheel information, the evaluation unit being integrated in particular in a grinding wheel holder, preferably in the grinding wheel flange.
  • the evaluation unit includes, for example, evaluation electronics and can include an integrated circuit and/or a computing unit, preferably a microcontroller. If the signals generated by the sensor or sensors are provided in analog form, the evaluation unit can also include an analog-to-digital converter. In this respect, the data provided by the sensor or sensors can be processed via the evaluation unit, and this processed data can be transmitted to the processing unit in particular via the transmission device. However, it is also possible to provide a memory unit for storing grinding wheel data in the grinding wheel, in which grinding wheel information is stored. Prepared grinding wheel information is preferably stored in this memory unit, so that this memory unit can also interact with the evaluation unit described above.
  • a data transmission interface can expediently be provided for reading out recorded grinding wheel data, in particular grinding wheel data records which describe the temporal progression of grinding wheel information.
  • grinding wheel data can include, for example, grinding wheel information about the previous operating time, grinding processes (programs) that have been carried out or planned, recorded temperature profiles, abrasion profiles or the like.
  • the processing unit interacts with a storage unit for storing grinding wheel data containing grinding wheel information and also interacts with a computing unit that is designed to do this based on actual grinding wheel data and target grinding wheel data stored in the storage unit, in particular stored grinding process parameters and/or workpiece parameters to calculate a control command for the spring end grinding machine.
  • This memory unit can be integrated in the grinding wheel itself or on the spring-end grinding machine, or it can be provided entirely externally. It is also possible to store grinding wheel data in several storage locations or to carry out the storage selectively, depending on the type of grinding wheel data.
  • grinding wheel data can also include workpiece parameters (material, dimensions), in particular the material and dimensions of the springs, as well as the respective grinding process parameters (contact pressure, limit temperatures, grinding durations, temporal progression of these parameters), so that the computing unit can, for example, use historical data for a current Grinding process generates suitable control commands and / or from current grinding process parameters using the sensor data from the grinding wheel suitable control commands for the spring end grinder are calculated or this data is correlated and stored in the memory unit or units.
  • workpiece parameters material, dimensions
  • the material and dimensions of the springs as well as the respective grinding process parameters (contact pressure, limit temperatures, grinding durations, temporal progression of these parameters)
  • the computing unit can, for example, use historical data for a current Grinding process generates suitable control commands and / or from current grinding process parameters using the sensor data from the grinding wheel suitable control commands for the spring end grinder are calculated or this data is correlated and stored in the memory unit or units.
  • the transmission device comprises a transmitter unit connected to the sensor or sensors or the evaluation unit, in particular arranged in the grinding unit or the grinding wheel, and a receiver unit connected to the processing unit for contactless transmission of grinding wheel information.
  • the processing unit also interacts with a transmission unit that can transmit information to a reception unit that is integrated in the grinding unit or in the grinding wheel.
  • the wireless signal transmission can be based on analog signals.
  • digital signals can also be transmitted, for example according to the WLAN standard, the Bluetooth standard or a mobile radio standard.
  • the transmission device is designed to transmit sensor signals detected by the sensor, which contain grinding wheel information, inductively, capacitively or in another suitable way, in particular wirelessly, to the processing unit, with the transmitter unit and receiver unit in particular being connected to the Axis of rotation of the grinding wheel coaxial induction coils are formed.
  • a system for controlling a spring end grinder in particular a spring end grinder, is also claimed, the system comprising a spring end grinder according to the present invention, a server having a storage unit for storing grinding wheel data containing grinding wheel information, at least one grinding machine communication device for communicating with the Spring-end grinding machine with the server, in particular via a wireless network connection and/or a server communication device for communication between the server and the spring-end grinding machine, in particular via a wireless network connection.
  • a web connection can be found here be provided for example by a mobile network or a LAN network or a WLAN network.
  • the system for controlling the grinding machine provides that the server communication device receives actual grinding wheel data from the grinding machine communication device or is designed to receive this data, with the server having a computing unit that is designed to do so, based on actual grinding wheel data received and target grinding wheel data stored on the server, in particular stored grinding process parameters and/or workpiece parameters, to calculate a control command for the spring-end grinding machine, with the server communication device being designed to send the control command to the grinding machine communication device.
  • the calculation of a control command includes the comparison of the received actual grinding wheel data with the stored target grinding wheel data.
  • the grinding process parameters can include, for example, the limit temperature for the spring ends and other grinding process parameters.
  • Workpiece parameters can include, for example, dimensions, material, wire gauge, or an identification number of the workpiece to be ground.
  • the system for controlling the grinding machine can also provide for a grinding machine communication device to be arranged in or on the grinding unit, in particular in or on the grinding wheel, and connected to the sensor and/or a grinding machine communication device to be connected to the processing unit.
  • a grinder communication device connected to the processing unit can be integrated into a control module of the spring-end grinder or arranged in a control cabinet of the spring-end grinder, i.e. in particular stationary relative to the (rotating) grinding wheel.
  • a computer-readable storage medium which contains instructions which cause at least one processor to implement a method according to the invention when the instructions are executed by the processor.
  • a computer-readable storage medium can be, for example, a mobile data carrier or a hard disk, which can be arranged in the spring-end grinding machine or an (external) server.
  • the spring end grinding machine 1 is designed with two or more loading plates 10, on each of which a plurality of workpiece receiving openings 15 are designed in order to be able to hold coil springs 3 therein.
  • the loading plates 10 are eccentrically rotatable about the axis of rotation A on a turntable 17 in such a way that a loading plate 10 can introduce the springs via a sliding plate 16 between two spatially spaced sanding plates 13 .
  • the turntable 17 rotates about the axis of rotation C.
  • the grinding wheels 13 grind the ends of the helical springs plane, in particular plane-parallel, so that the helical springs are each provided with plane-parallel ends.
  • the grinding wheels rotate around the common axis of rotation B (infeed grinding) or around axes of rotation B that are slightly tilted relative to one another (throughfeed grinding).
  • the spring-end grinding machine 1 is constructed essentially symmetrically to the axis M of symmetry.
  • At least one of the grinding wheels 13, preferably both grinding wheels, are designed according to the invention with at least one sensor 30 integrated therein.
  • One or more sensors 30 can be installed in the upper grinding wheel 13 (as in 1 and 2 shown) and / or in the lower grinding wheel 13 may be provided.
  • the sensor 30 detects both a temperature of the grinding wheel 13 on its grinding surface 131 facing the helical springs 3 and the respective abrasion of the grinding wheel 13.
  • separate sensors 30 can also be provided, which each provide grinding wheel information, e.g. a temperature or , a measure of wear.
  • the temperature of the grinding wheel 13 can be detected, for example, using a thermocouple.
  • the abrasion can also be detected via a resistance value of a conductor in the region of the sliding surface 131 that is also detected by the abrasion.
  • the measured values of the sensor(s) 30 are then fed to an evaluation unit 31 provided in the grinding wheel 13 and fed to a transmission unit 51 via a data management unit 43 integrated in the grinding wheel 13 .
  • the grinding wheel data obtained via a wireless connection 53 of a receiver unit 52 which in the present embodiment on the fixed part of the Spring end grinding machine 1 (that is, outside the rotating grinding unit 11) is arranged, supplied.
  • the transmitting unit 51 integrated in the grinding wheel 13 and the receiving unit 52 implemented on the spring-end grinding machine 1 are components of a transmission device 50 which enables wireless communication via a wireless connection 53 between the grinding wheel 13 and the spring-end grinding machine 1 .
  • the wireless communication can be unidirectional from the grinding wheel 13 to the spring end grinding machine 1 .
  • the communication is preferably bidirectional, so that data can also be transmitted from the spring-end grinding machine 1 to the grinding wheel 13 .
  • a memory unit 14 is preferably also implemented in the grinding wheel 13 .
  • the data recorded by the sensor(s) 30 can be stored in the storage unit 14 , but also associated process parameters, which are transmitted back from the spring-end grinding machine 1 to the grinding wheel 13 via the transmission device 50 .
  • data that is or was recorded by the spring-end grinding machine can also be transmitted back to the grinding wheel 13, in particular information about the drive forces, speed values, imbalance values recorded in the spring-end grinding machine, etc.
  • the entire history of various grinding processes can be stored in the grinding wheel 13 , in which the grinding wheel 13 was used, including the coil springs processed in each case, the process parameters, including temperature profiles of grinding speeds, number of revolutions, number of treated springs, etc.
  • the data stored in the grinding wheel 13 enable precise documentation of the Grinding wheel carried out grinding work, from which insights into the further development of grinding wheels and / or spring end grinders can be drawn.
  • the data recorded by the sensor 30 integrated in the grinding wheel 13 can also be used to directly influence control commands for the respective grinding process.
  • the grinding wheel information received at the receiving unit 52 of the spring-end grinding machine 1 is forwarded to a processing unit of the spring-end grinding machine.
  • the processing unit 40 of the spring end grinding machine 1 is directly integrated into it.
  • the processing unit 40 can also be provided externally.
  • the processing unit 40 includes, on the one hand, a storage unit 41 and, on the other hand, a computing unit 42 in order to calculate control commands for a specific grinding process.
  • the control commands for a specific grinding process also depend on the grinding wheel data recorded via the sensor 30 or the sensors 30, in particular the temperature at the spring ends or on the grinding surface 131 and the instantaneous abrasion.
  • a system 100 with one or more spring-end grinding machines 1 and a server 2 spatially separate from a spring-end grinding machine 1 can be provided, on the data of the spring-end grinding machine 1, comprising data from the sensor 30 integrated in the grinding wheel 13 or from the sensor 30 integrated in the grinding wheel 13 Sensors 30 are supplied.
  • the server 2 comprises a server communication device 21 which is in a wireless connection 23 with a grinding machine communication device 12 which is implemented on the spring-end grinding machine.
  • the wireless connection 23 includes a bidirectional data communication, which can take place in particular on the basis of a mobile radio standard or a WLAN standard.
  • the spring-end grinding machine 1 has a wireless connection 23 to a server 2 via a WLAN or mobile network.
  • the communication is bidirectional in such a way that both data transmission from the spring-end grinding machine 1 to the external server 2 and communication from the external server 2 to the spring-end grinding machine 1 is enabled.
  • the server 2 includes a computing unit 22 and a storage unit 20.
  • the data recorded by the sensor 30 or the sensors 30 in the grinding wheel 13 or in the grinding wheels 13 can, if necessary, be correlated with the other data associated process data are stored and used for subsequent control or evaluation routines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP23168245.1A 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts Pending EP4234162A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23168245.1A EP4234162A1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23168245.1A EP4234162A1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts
EP18183775.8A EP3597362B1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP18183775.8A Division EP3597362B1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts

Publications (1)

Publication Number Publication Date
EP4234162A1 true EP4234162A1 (fr) 2023-08-30

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EP18183775.8A Active EP3597362B1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts
EP23168245.1A Pending EP4234162A1 (fr) 2018-07-16 2018-07-16 Rectifieuse d'extrémités de ressorts

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722810A1 (fr) * 1995-01-19 1996-07-24 OMD OFFICINA MECCANICA DOMASO S.p.A. Machine à meuler des ressorts de compression
WO2000036543A1 (fr) * 1998-12-16 2000-06-22 University Of Massachusetts Systeme de meule
WO2006066259A2 (fr) * 2004-12-17 2006-06-22 Milwaukee Electric Tool Corporation Accessoires intelligents pour outils a commande mecanique
DE102006037490A1 (de) * 2006-08-10 2008-02-14 Peter Wolters Ag Doppelseiten-Bearbeitungsmaschine
EP1970159A1 (fr) * 2007-03-13 2008-09-17 Peter Wolters GmbH Machine de traitement dotée de moyens de détermination de paramètres de traitement
EP2926949A2 (fr) 2014-04-01 2015-10-07 Officina Meccanica Domaso SpA Refroidissement à air de meules et plateaux de rectifieuses à ressort (système à 3 chambres)
WO2017123834A1 (fr) * 2016-01-14 2017-07-20 3M Innovative Properties Company Conditionneur de patin cmp, système et procédé de conditionnement de patin
EP3290155A1 (fr) * 2016-08-29 2018-03-07 Lapmaster Wolters GmbH Procédé de mesure de l'épaisseur de pièces plates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722810A1 (fr) * 1995-01-19 1996-07-24 OMD OFFICINA MECCANICA DOMASO S.p.A. Machine à meuler des ressorts de compression
WO2000036543A1 (fr) * 1998-12-16 2000-06-22 University Of Massachusetts Systeme de meule
WO2006066259A2 (fr) * 2004-12-17 2006-06-22 Milwaukee Electric Tool Corporation Accessoires intelligents pour outils a commande mecanique
DE102006037490A1 (de) * 2006-08-10 2008-02-14 Peter Wolters Ag Doppelseiten-Bearbeitungsmaschine
EP1970159A1 (fr) * 2007-03-13 2008-09-17 Peter Wolters GmbH Machine de traitement dotée de moyens de détermination de paramètres de traitement
EP2926949A2 (fr) 2014-04-01 2015-10-07 Officina Meccanica Domaso SpA Refroidissement à air de meules et plateaux de rectifieuses à ressort (système à 3 chambres)
WO2017123834A1 (fr) * 2016-01-14 2017-07-20 3M Innovative Properties Company Conditionneur de patin cmp, système et procédé de conditionnement de patin
EP3290155A1 (fr) * 2016-08-29 2018-03-07 Lapmaster Wolters GmbH Procédé de mesure de l'épaisseur de pièces plates

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EP3597362A1 (fr) 2020-01-22
EP3597362B1 (fr) 2023-04-19

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