WO2020149316A1 - Système de traitement externe pour une machine-outil - Google Patents

Système de traitement externe pour une machine-outil Download PDF

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Publication number
WO2020149316A1
WO2020149316A1 PCT/JP2020/001121 JP2020001121W WO2020149316A1 WO 2020149316 A1 WO2020149316 A1 WO 2020149316A1 JP 2020001121 W JP2020001121 W JP 2020001121W WO 2020149316 A1 WO2020149316 A1 WO 2020149316A1
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WO
WIPO (PCT)
Prior art keywords
tool
machine tool
control means
external
data
Prior art date
Application number
PCT/JP2020/001121
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English (en)
Japanese (ja)
Inventor
憲吾 山本
貴行 山内
村上　浩二
Original Assignee
株式会社山本金属製作所
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.)
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Publication date
Application filed by 株式会社山本金属製作所 filed Critical 株式会社山本金属製作所
Priority to JP2020566437A priority Critical patent/JPWO2020149316A1/ja
Publication of WO2020149316A1 publication Critical patent/WO2020149316A1/fr

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    • 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
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • 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

Definitions

  • the present invention relates to an external processing system for changing an operation control program of a machine tool for processing a workpiece by a rotary processing tool such as a drill or an end mill or a processing tool such as a rotary tool in friction stir welding by interrupt processing or the like by an external personal computer or the like.
  • Patent Documents 1 to 3 This technique is advantageous in that the physical change of the tool during machining can be detected in real time, and the abnormality can be detected by an external device (such as a personal computer) that can wirelessly communicate with the tool or the machine tool.
  • the conventional technology has been able to detect only tool abnormalities and abnormal signs, and has not yet provided a specific configuration for controlling the operation of the machine tool after detection.
  • the machine tool is located at a position other than the tool or the tool holder for gripping the tool, for example, an acceleration pickup or a displacement meter arranged on the spindle of the machine tool, the current or torque of the spindle motor, or xyz on which the workpiece is mounted.
  • an acceleration pickup or a displacement meter arranged on the spindle of the machine tool, the current or torque of the spindle motor, or xyz on which the workpiece is mounted.
  • the present invention was created in view of the above circumstances, and an external device that measures a physical change of a processing tool such as a tool of a machine tool that processes a work, receives the measurement data, and determines an abnormality, etc.
  • An object is to provide an external processing system that changes the operation control of a machine.
  • the external processing system of the present invention is an external processing system capable of externally changing the operation control of a machine tool having a processing tool for processing a workpiece.
  • An operation control means dedicated to the machine tool which is provided in the machine tool and controls the operation of the machine tool, the machining tool and the tool holder,
  • An external control means provided outside the machine tool The external control means includes receiving means for receiving data from the measuring means by wireless bidirectional communication, and the machine tool and the machining tool by the operation controlling means based on the data from the measuring means received by the receiving means. And/or external control means for changing the normal operation control of the processing tool.
  • the measurement data from the machining tool being machined can be received/analyzed by the external device, and the operation of the machine tool can be changed in real time based on the result.
  • an external device such as a laptop computer detects an abnormality in the processing tool from the measured data of temperature and acceleration, it shifts the operation of the machine tool to a subprogram that commands an operation different from normal operation
  • An interrupt signal is given from an external device to a computer numerical control (CNC (Computer Numerical Control) program (NC program)) originally built in the machine tool itself.
  • CNC Computer Numerical Control
  • the change of the operation of the machine tool can be instructed from the external PC even when the abnormality of the processing tool is detected, and the operation of the machine tool can be avoided while avoiding the abnormality that occurred in real time
  • the external control unit determines whether or not the data from the measuring unit is within a predetermined allowable range, and if the data is outside the allowable range, changes the normal operation control by the operation control unit. An interrupt signal is transmitted to the operation control means.
  • the operation control means registers another control mode that is different from normal when changing the normal operation control by the operation control means, and changes the normal operation control by the operation control means from the external control means.
  • the interrupt signal is received, it is preferable to execute another registered control mode instead of the normal control mode.
  • the permissible range (threshold value, etc.) of the measured values of the processing tool and the like is set in advance, and the processing tool is processed by an external control means such as a personal computer that receives and analyzes the measured data.
  • an interrupt signal is sent to the operation program of the machine tool to execute the subprogram in order to change the machine tool from the normal operation.
  • the measuring unit has a sensor for detecting at least temperature and/or acceleration data in the processing tool or the tool holder, and wirelessly transmits data from the sensor to an external control unit.
  • the external control means determines that the data from the sensor has exceeded a preset threshold value as an abnormality of the machining tool, it stops the operation of the machining tool and the tool holder, and a warning lamp included in the machine tool.
  • the normal operation control by the operation control means is changed to turn on.
  • the normal operation control by the operation control means may be changed so that the warning light of the machine tool is turned on. You may display a warning.
  • This external processing system example is a case of arranging a temperature sensor such as a thermocouple or an acceleration sensor in a machining tool or a tool holder that holds the processing tool in advance, and wirelessly transmitting measurement data to an external control unit such as a laptop computer.
  • an external control unit such as a laptop computer.
  • the measuring means has a sensor for detecting temperature data of at least the processing tool in the processing tool or the tool holder, wirelessly transmits temperature data from the sensor to an external control means, and the external control means,
  • a preset threshold value as an abnormality of the machining tool
  • the operation of the machine tool and/or the machining tool and the tool holder is stopped, and after the operation is stopped.
  • the temperature data from the sensor is below or below a preset temperature value as the threshold value or the temperature for restarting operation, when the operation of the machine tool, the machining tool and the tool holder is stopped
  • the normal operation control by the operation control means may be changed so that the processing is restarted.
  • the measuring means has a tool sensor for detecting at least temperature and/or acceleration data in the processing tool or the tool holder, and wirelessly transmits the data from the tool sensor to an external control means.
  • the machine tool has a machine tool sensor for detecting data of physical change of each part of the machine tool, and transmits data from the machine tool sensor to an external control means,
  • the operation control means causes the machine tool and the machine tool to operate. It is also preferable to change the normal operation control of the processing tool to another predetermined operation control.
  • This external processing system not only measures the temperature and acceleration of machining tools and tool holders, but also combines the measurement data of physical quantity changes in other parts of the machine tool with external control means to detect machining tool abnormalities, etc. Change the operation of the machine. For example, it is possible to detect abnormalities by combining the power and torque of the spindle motor for spindle rotation, the measurement data from the acceleration sensor and displacement sensor installed on the spindle, and perform more detailed abnormality determination and external operation control of machine tools. Becomes
  • an interrupt signal can be transmitted to an operation program (NC program) of a machine tool in order to eliminate abnormalities and the like, and operation control different from usual can be performed.
  • FIG. 1 shows an outline of an example in which the external part control means controls the operation change of the machine tool operation control means in the external processing system.
  • the machine tool 10 is equipped with a tool holder 3 that holds the machining tool 1 by its main spindle 4, and rotates the main spindle 4 to rotate the machining tool 1, which is mounted on a stage 5 that moves in the XYZ directions.
  • the cutting of the workpiece 2 is performed.
  • the spindle 4 is rotated by a spindle motor, the spindle motor is controlled based on a CNC program, and the stage 5 is driven by a servo motor, and similarly controlled based on a CNC program.
  • the CNC of the machine tool 10 can be set and confirmed on the operation panel 7 of the machine tool 10.
  • the CNC program can be transmitted to the external personal computer 8 via a wired LAN such as Ethernet.
  • the CNC program is a program for controlling the operation of the machine tool 10 based on the variable (CNC) of the control numerical information of the machine tool 10, and the CNC is the coordinate (for example, XYS coordinate) and the number of the machining tool 1 (for example, the tool number). ), whether or not machining is being performed (for example, whether or not cutting feed is being performed), the program number being machined, the line number being machined, and the like.
  • thermocouple 6 in the machining tool 1, acceleration information from an acceleration sensor (not shown) in the machining tool 1 (or the tool holder 3), and the like.
  • a transmission unit for wirelessly transmitting the data to the outside is provided, and temperature information and acceleration information during processing are wirelessly transmitted to the external personal computer 8 in real time by Wi-Fi, Blue-tooth, wireless LAN, or the like.
  • the CNC program wire-transmitted to the external personal computer 8 and the temperature/acceleration etc. information of the machining tool 1 wirelessly transmitted are processed by the external personal computer 8 as a time chart on the same time axis, and an abnormality such as damage of the machining tool 1 occurs.
  • the warning light 9 is turned on to call attention. At this time, a warning can be simultaneously displayed on the display of the external personal computer 8.
  • the abnormality detection not only the abnormality detection but also the actual processing control processing can be performed by the external personal computer 8.
  • an interrupt signal is sent by wire from the external personal computer 8 to the CNC program, and the variables of the CNC are written so as to change and control the operation of the machine tool 10, its spindle 1, and the stage 5. Specific examples will be shown below.
  • FIG. 2 shows an example of the processing flow in the external personal computer 8
  • FIG. 2 shows an example of the processing flow in the external personal computer 8
  • FIG. 2 shows an example of the processing flow in the external personal computer 8
  • FIG. 2 shows an example of the processing flow of the NC program for controlling the operation of the machine tool 10.
  • the external personal computer 8 reads temperature information from the thermocouple 6 and acceleration information and stress information from the acceleration sensor in the tool holder 3. (ST2).
  • the tool As a retracting operation of the machining tool 1 from the workpiece 2, the tool is retracted when the temperature reaches 123.4° C., and the change of the CNC variable and the interrupt signal are illustrated in the interrupt control for exchanging the tool.
  • the saving operation of the machining tool IF[#103GE123.4]GOTO100
  • the 100th line is specified as the saving operation of the machining tool 1.
  • FIG. 3 shows an example of the processing flow in the external personal computer 8
  • FIG. 3 shows an example of the processing flow in the external personal computer 8
  • FIG. 3 shows an example of the processing flow of the NC program for controlling the operation of the machine tool 10.
  • the external personal computer 8 sends the temperature information from the thermocouple 6 and the acceleration information from the acceleration sensor in the tool holder 3 as in FIG.
  • the stress information is read (ST21).
  • This threshold value is set in advance with temperature, acceleration, and force that are considered to satisfy the conditions of "chattering" of the processing tool 1 that affects processing accuracy and damage of the processing tool 1 and occurrence of burrs that cannot be overlooked, depending on the processing conditions. deep.
  • the subprogram called when an interrupt occurs is registered (ST32).
  • the sub-program here includes a tool mark removing operation and a deburring operation. For example, if it is determined that "chatter" has occurred at an acceleration of 50.0 [m/s2] or more and the deburring subprogram is the 101st line of the NC program, IF[#101 GE 50.0] will be GOTO 101.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)
  • Machine Tool Sensing Apparatuses (AREA)

Abstract

Le problème à résoudre dans le cadre de la présente invention consiste à fournir un système de traitement externe pour une machine-outil, le système de traitement externe pouvant modifier une commande de fonctionnement d'une machine-outil ayant un outil d'usinage pour usiner une pièce à usiner, la modification étant réalisée à partir de l'extérieur de la machine-outil. La solution selon l'invention porte sur un système de traitement externe qui comprend : un moyen de mesure qui détecte, en temps réel, un changement physique dans un outil d'usinage, dans un porte-outil couplé à un arbre principal d'une machine-outil au moyen de laquelle l'outil d'usinage est saisi, ou dans la machine-outil, et qui transmet ensuite des données se rapportant à la détection à l'extérieur ; un moyen de commande de fonctionnement pour une machine-outil fourni à la machine-outil, le moyen de commande de fonctionnement commandant les fonctionnements de la machine-outil, de l'outil d'usinage et du porte-outil ; et un moyen de commande externe disposé à l'extérieur de la machine-outil. Le moyen de commande externe comprend : un moyen de réception qui reçoit des données en provenance du moyen de mesure par le biais d'une communication bidirectionnelle sans fil ; et un moyen de commande externe qui modifie, sur la base des données provenant du moyen de mesure telles que reçues par le moyen de réception, une commande de fonctionnement normal de la machine-outil et de l'outil d'usinage qui est effectuée par le moyen de commande de fonctionnement.
PCT/JP2020/001121 2019-01-15 2020-01-15 Système de traitement externe pour une machine-outil WO2020149316A1 (fr)

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JP2020566437A JPWO2020149316A1 (ja) 2019-01-15 2020-01-15 工作機械の外部処理システム

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JP2019004678 2019-01-15
JP2019-004678 2019-01-15
JP2019115466 2019-06-21
JP2019-115466 2019-06-21

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294246A (ja) * 1985-10-17 1987-04-30 Mitsubishi Electric Corp 産業用ロボツト装置
JPH06110538A (ja) * 1992-09-25 1994-04-22 Fanuc Ltd コンピュータ制御機器のリモート診断装置
JPH11188570A (ja) * 1997-12-24 1999-07-13 Toyoda Mach Works Ltd 冷風冷却を用いた機械加工装置及び機械加工方法
JP2000315105A (ja) * 1999-04-30 2000-11-14 Star Micronics Co Ltd Ｎｃ工作機械の管理システムおよび管理プログラム
US6455807B1 (en) * 2000-06-26 2002-09-24 W.A. Whitney Co. Method and apparatus for controlling a laser-equipped machine tool to prevent self-burning
JP2002312011A (ja) * 2001-04-10 2002-10-25 Enshu Ltd 工作機械のための情報通信システム
JP2004160564A (ja) * 2002-11-11 2004-06-10 Mori Seiki Co Ltd 工作機械
CN101118437A (zh) * 2007-09-03 2008-02-06 石毅 一种新型的数控机床远程状态监测与故障诊断系统实现方法
WO2016136919A1 (fr) * 2015-02-25 2016-09-01 株式会社山本金属製作所 Dispositif de mesure de température
WO2018062317A1 (fr) * 2016-09-27 2018-04-05 株式会社山本金属製作所 Système de détection de qualité de fluide caloporteur et système de gestion de fluide caloporteur
JP2018097494A (ja) * 2016-12-09 2018-06-21 Dmg森精機株式会社 情報処理方法、情報処理システム、および情報処理装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294246A (ja) * 1985-10-17 1987-04-30 Mitsubishi Electric Corp 産業用ロボツト装置
JPH06110538A (ja) * 1992-09-25 1994-04-22 Fanuc Ltd コンピュータ制御機器のリモート診断装置
JPH11188570A (ja) * 1997-12-24 1999-07-13 Toyoda Mach Works Ltd 冷風冷却を用いた機械加工装置及び機械加工方法
JP2000315105A (ja) * 1999-04-30 2000-11-14 Star Micronics Co Ltd Ｎｃ工作機械の管理システムおよび管理プログラム
US6455807B1 (en) * 2000-06-26 2002-09-24 W.A. Whitney Co. Method and apparatus for controlling a laser-equipped machine tool to prevent self-burning
JP2002312011A (ja) * 2001-04-10 2002-10-25 Enshu Ltd 工作機械のための情報通信システム
JP2004160564A (ja) * 2002-11-11 2004-06-10 Mori Seiki Co Ltd 工作機械
CN101118437A (zh) * 2007-09-03 2008-02-06 石毅 一种新型的数控机床远程状态监测与故障诊断系统实现方法
WO2016136919A1 (fr) * 2015-02-25 2016-09-01 株式会社山本金属製作所 Dispositif de mesure de température
WO2018062317A1 (fr) * 2016-09-27 2018-04-05 株式会社山本金属製作所 Système de détection de qualité de fluide caloporteur et système de gestion de fluide caloporteur
JP2018097494A (ja) * 2016-12-09 2018-06-21 Dmg森精機株式会社 情報処理方法、情報処理システム、および情報処理装置

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