WO2020114919A1 - Système de mesure automatisé pour un système porte-outil - Google Patents

Système de mesure automatisé pour un système porte-outil Download PDF

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Publication number
WO2020114919A1
WO2020114919A1 PCT/EP2019/083202 EP2019083202W WO2020114919A1 WO 2020114919 A1 WO2020114919 A1 WO 2020114919A1 EP 2019083202 W EP2019083202 W EP 2019083202W WO 2020114919 A1 WO2020114919 A1 WO 2020114919A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
measuring
measuring device
unit
tool
Prior art date
Application number
PCT/EP2019/083202
Other languages
German (de)
English (en)
Inventor
Stefan Kempter
Christian Neubauer
Andreas Dolpp
Original Assignee
Röhm 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 Röhm Gmbh filed Critical Röhm Gmbh
Publication of WO2020114919A1 publication Critical patent/WO2020114919A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
    • B23Q17/003—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
    • B23Q17/005—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a force, a pressure or a deformation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0076—Force sensors associated with manufacturing machines
    • G01L5/009—Force sensors associated with material gripping devices

Definitions

  • the invention relates to a measuring device for insertion into a
  • Measuring body and with a voltage source and with a sensor unit for acquiring a measured value of a measured variable in contact with the control and acquisition unit.
  • the invention relates to a method for acquiring a measured value of a measured variable by means of a measuring device.
  • a time measuring unit is assigned to the measuring device, which switches the voltage source from a deactivated to an activated state.
  • the receiving unit assigned to the measuring device is switched on at periodic intervals in order to determine whether a measurement should be carried out.
  • This periodic switching on and off of the receiving unit but requires a lot of energy from the energy storage, the life of which is considerably reduced. This can also mean that a measurement cannot be carried out due to the insufficient charge level of the energy store and the production is thereby hindered.
  • the object of the present invention is a more energy efficient
  • the task relating to the measuring device is achieved in the case of a measuring device of the type mentioned at the outset in that a
  • An adjusting element is arranged, which is adjustable into an activation position, in which the removal of energy from the voltage source for supplying the sensor unit and the control and detection unit can be activated, and / or into a measurement position for recording the measured value of a
  • the control and recording unit controls the measuring process and thus records the measured value of a measured variable.
  • the sensor unit is preferably designed as a strain gauge and / or as a distance sensor and / or as
  • the voltage source is formed as an accumulator or as a battery.
  • the adjusting member is preferably formed as a piston with a piston rod or as a bolt.
  • the measuring body has a collar at one end - that is to say a hollow cylinder open on one side - in which the adjusting member is guided and that the adjusting member is positioned in the collar in such a way that it can be acted upon by a component of the tool clamping device. This creates a mechanical solution for adjusting the
  • Adjustment member enables that does not require additional energy supply by the voltage source.
  • the component can be formed as one arranged in the tool holder of the tool clamping device
  • Clamping head or as a spindle or as one on a spindle of the
  • Tool clamping device formed pressure piece or the like.
  • the actuating element is preferably acted upon by the
  • the tool clamping device has a
  • Display device for displaying the measured value is assigned.
  • the display device provides that a transmitter is assigned to the sensor unit or the control and detection unit.
  • the measurement value is preferably transmitted wirelessly via radio, in particular via Bluetooth. If the display unit is integrated directly in the measuring body, radio transmission is not necessary.
  • Adjustment to the measuring position by means of the spring Adjusting element is assigned to the exerted restoring force.
  • the adjustment element is adjusted to the measurement position in a preferred manner
  • Embodiment only through the restoring force of the spring.
  • the adjustment can also be carried out only partially by the restoring force of the spring.
  • Embodiment is arranged around a part of the piston rod of the adjusting element formed as a piston, a spiral spring.
  • control and recording unit is assigned a timer or a delay unit. It can in the tax and
  • a measurement duration can be stored, after which the measuring device is automatically deactivated. This also increases the
  • the adjusting element can be adjusted into a deactivation position in which the energy removal from the voltage source for supplying the sensor unit and the control recording unit can be deactivated.
  • the adjustment of the adjustment element in the deactivation position can either be carried out via a timer or delay unit and / or is initiated by a signal to the control and detection unit when the adjustment element is adjusted.
  • Activation position i.e. the application of the actuator enable deactivation of the energy consumption.
  • the object relating to the method is achieved by a method for acquiring a measured value of a measured variable in a tool holder of a tool clamping device having a pressure piece a measuring device, the one measuring body and one with a
  • Has voltage source and a sensor unit in contact with the control and detection unit and with an adjusting element arranged in the measuring body comprising the following steps:
  • Power source for supplying the sensor, as well as the control and detection unit;
  • the service life of the voltage source can thereby be extended and the measuring device can be used longer.
  • the adjustment of the adjusting member in the activation position is preferably carried out by contacting the pressure piece, whereby the adjusting member is acted upon. It may also be sufficient if only a part of the part of the adjusting member facing the pressure piece contacts the pressure piece. In an alternative embodiment, the loading may e.g. the adjustment of the
  • the adjustment of the adjusting member into a measuring position is preferably carried out by a spring assigned to the adjusting member. Due to the restoring force of the spring acting on the adjusting element during the clamping process by the tool clamping device, the adjustment takes place in the
  • step D is provided as follows:
  • Detection unit trained transmitter to one of the
  • Tool clamping device associated display device or directly higher-level machine control As a result, the measured value can be displayed either on the measuring device itself and / or on the tool clamping device. Furthermore, the measured value can also be displayed on an external display device provided for this purpose via the transmitter.
  • step A) is carried out automatically by gripping the measuring device, by means of a tool changer from a tool magazine and inserting it into the tool holder
  • step G takes place automatically by removing the measuring device from the tool holder by means of the Tool changer and insertion or storage in the tool magazine. This speeds up the measuring process considerably and enables wear to be checked regularly in order to avoid failures of the tool clamping device. To avoid measurement errors and to determine the
  • step D) is carried out several times and that at least step D) is followed by the step:
  • the current charge level of the voltage source is determined and if the charge level is sent to the display unit and / or the
  • Display device is transmitted.
  • the deactivation of the energy consumption can also take place via a timer assigned to the control and recording unit, which leads to the automatic deactivation of the energy extraction and thus to the deactivation of the measuring device after a predetermined time.
  • the following step is provided:
  • 1 is a perspective view of the first measuring device
  • Fig. 3 shows a detail of a longitudinal section of the first
  • Fig. 4 shows a detail of a longitudinal section of the first
  • Fig. 5 shows a section of a longitudinal section of the first
  • Measuring device in the tool holder in the measuring position 6 is a partially sectioned view of the measuring device and the corresponding part of the tool clamping device; shown in the measurement position,
  • Fig. 7 is a diagram of the sequence of the method according to the invention with combined pull-in force and flub measurement and
  • Fig. 8 is a diagram of the inventive method with a
  • FIG. 1 shows a perspective view of the measuring device 1 with a measuring body 2 which has a handle 3 at one end and a collar 4 at the other end for receiving in a tool holder 6 of a tool clamping device 5.
  • FIG. 2 shows a partial section of the measuring device 1 from FIG. 1 and a partially cut fragment of a spindle 7 of the tool clamping device 5, which has a pressure piece 8 at the end facing the measuring device 1.
  • the measuring body 2 is in the collar 4 as a piston 9 with a
  • Piston rod 11 formed adjusting member 10 out.
  • the piston rod 11 is partially surrounded by a spring 12 formed as a spiral spring.
  • a voltage source Arranged in the handle 3 of the measuring device 1 is a voltage source, not shown, which is formed as an accumulator or as a battery.
  • a control and not shown in the measuring body 2 is arranged in the handle 3 of the measuring device 1 .
  • Arranged detection unit which is in contact with the voltage source and with a force measuring system, for example as a
  • DMS Strain gauge sensor
  • the control and detection unit has a display unit 13 formed on the handle 3. Alternatively or in addition, it can also on the tool clamping device 5 a not shown
  • Display device be formed so that a transmitter, not shown, can also transmit the measured value to the display device.
  • the control and detection unit serves to control the measurement process of the measured variable by the sensor unit, in the present exemplary embodiment to determine the pull-in force or the clamping force.
  • the control and detection unit can also include an evaluation unit, with the aid of which the measured value or, in the case of a plurality of measurement processes, an average value can be formed from the individual measured values.
  • the method according to the invention i.e. the activation, the measuring process and the deactivation of the measuring device can be followed.
  • the measuring device 1 is automatically brought into the machining center from a tool magazine (not shown) by a tool changer (not shown).
  • the measuring device 1 is deactivated, i. H. there is no energy withdrawal from the energy store.
  • the measuring device 1 is in the tool holder 6
  • the measuring device is then clamped in the tool clamping device 5.
  • the pressure piece 8 is adjusted against the direction of the piston 9. 5 shows, the piston 9 due to the restoring force
  • the registration unit is started up with the activation position beginning and the control and registration unit controls the execution of a predefined number of measurements of a measured variable in the latter
  • Embodiment the pull-in force of the tool clamping device 5.
  • the pull-in force is determined by the elongation of the strain gauges
  • Detection unit wirelessly transmitted to the display unit 13 or the display device via a radio link. At the same time, the
  • the state of charge of the voltage source is determined and transmitted to the display unit 13 and / or the display device.
  • the measuring device 1 is released.
  • the piston 9 is moved back into the activation position. From the plurality of measurements, an average value can either be determined by the control and detection unit, which includes an evaluation unit formed as a microcontroller, or the average value is determined in an evaluation unit assigned to the tool clamping device 5. In the second case, the energy consumption is deactivated from the
  • Detection unit assigned a timer, not shown, so that the Deactivation of the energy consumption takes place automatically after a time previously stored in the control and recording unit.
  • the length of the adjusting member 10 formed as a piston 9 is at least as long as the maximum executable stroke of the pressure piece 8.
  • the display unit 13 or the display device is assigned a control panel 15 in which a stroke measurement or a Pull-in force measurement can be selected.
  • the sensor unit also has a displacement measuring system such as a piston rod sensor or a
  • the measurement is carried out analogously to the procedure for determining the pull-in force described above.
  • the control and detection unit and / or the evaluation unit can infer the stroke of the pressure element 8 from the distance between the adjusting member 10 and the pressure element 8.
  • An extension of the stroke is the first sign of wear and tear, while an insufficient lubrication can be inferred from a reduction in the stroke.
  • the measured values are recorded independently of one another and can also be displayed simultaneously.
  • the combination of pull-in force and stroke is a good indicator of wear.
  • pull-in force measurement and / or the stroke measurement can be carried out with rotation.
  • the measurements can be made at different speeds and / or
  • the method as shown in FIG. 7 can include control steps: after the sensor units have been acted on, ie after the adjustment member 10 has been moved into the measurement position, the control and detection unit checks whether the adjustment has taken place. If this is not the case, the measuring device 1 is deactivated, ie the energy consumption is deactivated. If, on the other hand, the adjustment has taken place, the measured values are determined after a short dwell time for booting electronics of the control and recording unit that control the measuring process. Furthermore, after the mean value has been transmitted to the display unit 13, a further step is queried as to whether the transmission was successful.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un système de mesure (1) à insérer dans un raccordement d'outil (6) d'un système porte-outil (5), comprenant un corps de mesure (2) et une unité de commande et de détection en contact avec une source de tension et avec une unité capteur pour la détection d'une valeur de mesure d'un paramètre de mesure. Le corps de mesure (2) abrite un organe de réglage (10) apte à être réglé dans une position d'activation dans laquelle peut être activé le prélèvement d'énergie dans la source de tension aux fins d'alimentation de l'unité capteur et de l'unité de commande et de détection, et/ou dans une position de mesure pour la détection de la valeur de mesure d'un paramètre de mesure par l'unité de commande et de détection et par l'unité capteur.
PCT/EP2019/083202 2018-12-03 2019-12-01 Système de mesure automatisé pour un système porte-outil WO2020114919A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018130730.6 2018-12-03
DE102018130730.6A DE102018130730A1 (de) 2018-12-03 2018-12-03 Automatisierte Messvorrichtung für eine Werkzeugspannvorrichtung

Publications (1)

Publication Number Publication Date
WO2020114919A1 true WO2020114919A1 (fr) 2020-06-11

Family

ID=68808314

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/083202 WO2020114919A1 (fr) 2018-12-03 2019-12-01 Système de mesure automatisé pour un système porte-outil

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Country Link
DE (1) DE102018130730A1 (fr)
WO (1) WO2020114919A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108521A1 (fr) * 1982-10-11 1984-05-16 Renishaw plc Capteur de position
JP2003039280A (ja) * 2001-07-31 2003-02-12 Kuroda Precision Ind Ltd 工作機械の締結力測定装置及び制御方法
DE102010018706B4 (de) 2010-04-29 2012-10-04 Ott-Jakob Spanntechnik Gmbh Messvorrichtung zur Messung der Spannkraft einer Werkzeugspannvorrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011685B4 (de) * 2011-02-18 2014-08-07 Ott-Jakob Spanntechnik Gmbh Messvorrichtung zur Messung der Spannkraft einer Werkzeugspannvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108521A1 (fr) * 1982-10-11 1984-05-16 Renishaw plc Capteur de position
JP2003039280A (ja) * 2001-07-31 2003-02-12 Kuroda Precision Ind Ltd 工作機械の締結力測定装置及び制御方法
DE102010018706B4 (de) 2010-04-29 2012-10-04 Ott-Jakob Spanntechnik Gmbh Messvorrichtung zur Messung der Spannkraft einer Werkzeugspannvorrichtung

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