WO2020149316A1 - External processing system for machine tool - Google Patents
External processing system for machine tool Download PDFInfo
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- 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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- 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
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- 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
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- 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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Abstract
[Problem] The purpose of the present invention is to provide an external processing system for a machine tool, the external processing system being capable of modifying an operation control of a machine tool having a machining tool for machining a workpiece, the modification being made from outside of the machine tool. [Solution] This external processing system comprises: a measurement means that detects, in real time, a physical change in a machining tool, in a tool holder coupled to a main shaft of a machine tool by which the machining tool is gripped, or in the machine tool, and that then transmits data pertaining to the detection to the outside; an operation control means for a machine tool provided to the machine tool, the operation control means controlling the operations of the machine tool, the machining tool, and the tool holder; and an external control means provided outside of the machine tool. The external control means has: a reception means that receives data from the measurement means through wireless bidirectional communication; and an external control means that modifies, on the basis of the data from the measurement means as received by the reception means, a normal operation control of the machine tool and the machining tool that is performed by the operation control means.
Description
本発明は、ドリル、エンドミル等の回転加工工具や摩擦攪拌接合における回転ツール等の加工ツールによってワークを加工する工作機械の動作制御プログラムを外部のパソコン等により割込み処理等して変更する外部処理システムに関する。
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. Regarding
マシンニング切削加工装置等の工作機械において、加工精度の向上、工具破損防止等を考慮するには実際の加工時の工具の摩耗や疲労、破損、びびり等を評価することが要求される。しかしながら、従来、工具の評価は、装置メーカや工具メーカがその装置や工具ごとに行っており、一般的な評価基準、学術的に標準化された評価基準に基づいて行っており、加工時における実際の工具についてのリアルタイム検証はできていなかった。
In machine tools such as machining cutting equipment, in order to improve machining accuracy and prevent tool damage, it is necessary to evaluate the wear, fatigue, damage, and chatter of the tool during actual machining. However, in the past, tool evaluations have been performed by equipment manufacturers and tool manufacturers for each equipment and tool, and are based on general evaluation criteria and academically standardized evaluation criteria. Real-time verification of the tool was not completed.
これに対して出願人は回転工具の加工中の温度や加速度を計測し得る工作機械のツールホルダユニットを開発・提供し、この計測結果に基づく工具破損等の異常予知技術についても開発・提供してきた(特許文献1~特許文献3)。この技術では加工中の工具の物理変化をリアルタイムに検出でき、工具や工作機械と無線通信可能な外部装置(パソコン等)で異常検出を行う点できる点で有利である。
On the other hand, the applicant has developed and provided a tool holder unit for machine tools that can measure the temperature and acceleration of a rotating tool during processing, and has also developed and provided technology for predicting abnormalities such as tool damage based on the measurement results. (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.
しかしながら、従来の技術では工具の異常や異常予兆等を検出することができるに留まっており、検出後に工作機械の動作を制御する具体的構成を提供するには至っていなかった。また、工作機械は、工具やこれを把持するツールホルダ以外の位置、例えば工作機械の主軸等に配設される加速度ピックアップや変位計、スピンドルモータの電流やトルク、被加工物を載置するxyzステージ近傍の動力計やサーボモータの電流やトルクなど種々の物理変化を計測する場合、これらの計測データを工具の計測データと組み合わせて工具の異常等の検出、外部装置で工作機械の動作を制御する構成が提供されることも望まれるであろう。
However, 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. Further, 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. When measuring various physical changes such as the current and torque of the dynamometer and servo motor near the stage, combine these measurement data with the measurement data of the tool to detect abnormality of the tool and control the operation of the machine tool with an external device. It would also be desirable to be provided with a configuration that does.
本発明は上記実情に鑑みて創作されたものであり、ワークを加工する工作機械の工具等の加工ツールの物理変化を計測し、この計測データを受信し、異常等判定をする外部装置が工作機械の動作制御を変更する外部処理システムを提供することを目的とする。
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.
上記目的を達成するため具体的に本発明の外部処理システムは
ワークを加工する加工ツールを有する工作機械の動作制御を外部から変更可能な外部処理システムであって、
前記加工ツール、該加工ツールを把持し工作機械の主軸に連結するツールホルダ、又は前記工作機械の物理変化をリアルタイムに検出し、そのデータを外部送信する計測手段と、
工作機械に備えられ、該工作機械及び前記加工ツール及びツールホルダの動作を制御する工作機械専用の動作制御手段と、
工作機械の外部に備えられる外部制御手段と、を備え、
前記外部制御手段は、無線双方向通信により前記計測手段からのデータを受信する受信手段と、該受信手段が受信した計測手段からのデータに基づいて前記動作制御手段による前記工作機械、前記加工ツール及び/又は前記加工ツールの通常の動作制御を変更する外部制御手段と、を有する。 To achieve the above object, 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.
A machining tool, a tool holder that grips the machining tool and is connected to a spindle of a machine tool, or a measuring unit that detects a physical change of the machine tool in real time and externally transmits the data.
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.
ワークを加工する加工ツールを有する工作機械の動作制御を外部から変更可能な外部処理システムであって、
前記加工ツール、該加工ツールを把持し工作機械の主軸に連結するツールホルダ、又は前記工作機械の物理変化をリアルタイムに検出し、そのデータを外部送信する計測手段と、
工作機械に備えられ、該工作機械及び前記加工ツール及びツールホルダの動作を制御する工作機械専用の動作制御手段と、
工作機械の外部に備えられる外部制御手段と、を備え、
前記外部制御手段は、無線双方向通信により前記計測手段からのデータを受信する受信手段と、該受信手段が受信した計測手段からのデータに基づいて前記動作制御手段による前記工作機械、前記加工ツール及び/又は前記加工ツールの通常の動作制御を変更する外部制御手段と、を有する。 To achieve the above object, 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.
A machining tool, a tool holder that grips the machining tool and is connected to a spindle of a machine tool, or a measuring unit that detects a physical change of the machine tool in real time and externally transmits the data.
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.
本発明では、加工中の加工ツールからの計測データを外部装置で受信・分析し、その結果に基づいて工作機械の動作をリアルタイムで変更することができる。具体的には、ノートパソコン等の外部装置で温度や加速度の計測データから加工ツールの異常を検知した場合に工作機械の動作を通常の動作と異なる動作を指令するサブプログラムに移行するように、工作機械自体が元々内蔵するコンピュータ数値制御(CNC(Computer Numerical Control)のプログラム(NCプログラム)に、外部装置から割込み信号を与える。本外部処理システムによれば、これまでは加工ツールの異常検知に留まっていたのに対して、加工ツールの異常を検知しても外部のパソコンから工作機械の動作の変更を指令することができ、リアルタイムに生じた異常をその場で回避しながら工作機械の運転することができる。その結果、工作機械や加工ツール、被加工物、加工条件を問わず安全で高精度な加工を達成することができる。また、加工中に動作修正が可能となるため加工条件の設定も容易であり、ギリギリまで条件を高くすることも可能となる。
In the present invention, 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. Specifically, when 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. Although it remained, 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 As a result, it is possible to achieve safe and highly accurate machining regardless of the machine tool, machining tool, workpiece, and machining conditions. Is also easy to set, and it is possible to raise the conditions to the last minute.
また一例として、前記外部制御手段は、前記計測手段からのデータが予め定めた許容範囲か否かを判定し、該許容範囲外である場合には前記動作制御手段による通常の動作制御を変更する割込み信号を動作制御手段に送信する。
Further, as an example, 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.
具体的に前記動作制御手段は、前記動作制御手段による通常の動作制御を変更するときの通常と異なる他の制御態様を登録し、前記外部制御手段から前記動作制御手段による通常の動作制御を変更する割込み信号を受信した場合には、通常の制御態様に替えて登録された他の制御態様を実行することが好ましい。
Specifically, 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. When the interrupt signal is received, it is preferable to execute another registered control mode instead of the normal control mode.
具体的にこの本外部処理システムの例によれば、予め加工ツール等の計測値の許容範囲(閾値等)を定めておき、計測データを受信・分析するパソコン等の外部制御手段で加工ツールの計測値が許容範囲外になった場合には、工作機械を通常の動作から変更するために工作機械の動作プログラムに割込み信号を送信してサブプログラムを実行する。
Specifically, according to this example of the external processing system, 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. When the measured value is out of the allowable range, 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.
また他の例として、前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも温度及び/又は加速度のデータを検出するセンサを有し、該センサからのデータを外部制御手段に無線送信し、
外部制御手段は、前記センサからのデータが加工ツールの異常として予め設定された閾値以上になったと判定した場合には、前記加工ツール及び前記ツールホルダの動作を停止し、工作機械が有する警告灯を点灯するように動作制御手段による通常の動作制御を変更する。なお、予め設定された閾値以上になったと判定した場合、工作機械が有する警告灯を点灯するように動作制御手段による通常の動作制御を変更しても良く、外部制御手段(外部パソコン等)で警告表示を行っても良い。 As another example, 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.
When 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. In addition, when it is determined that the preset threshold value is exceeded, 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.
外部制御手段は、前記センサからのデータが加工ツールの異常として予め設定された閾値以上になったと判定した場合には、前記加工ツール及び前記ツールホルダの動作を停止し、工作機械が有する警告灯を点灯するように動作制御手段による通常の動作制御を変更する。なお、予め設定された閾値以上になったと判定した場合、工作機械が有する警告灯を点灯するように動作制御手段による通常の動作制御を変更しても良く、外部制御手段(外部パソコン等)で警告表示を行っても良い。 As another example, 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.
When 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. In addition, when it is determined that the preset threshold value is exceeded, 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.
本外部処理システム例は、予め加工ツール又はこれを把持するツールホルダに熱電対等の温度センサや加速度センサを配置し、計測データをノートパソコン等の外部制御手段に無線送信する例の場合であり、外部制御手段で計測データが所定の閾値を超えると異常と判定し、直ちに加工を停止し、工作機械の警告灯を点灯して現場オペレータに異常を通知するサブプログラムを割込み処理する。
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. When the measured data exceeds a predetermined threshold value by the external control means, it is determined to be abnormal, the machining is immediately stopped, a warning light of the machine tool is turned on, and a subprogram for notifying the operator of the abnormality is interrupted.
また、前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも該加工ツールの温度データを検出するセンサを有し、該センサからの温度データを外部制御手段に無線送信し、外部制御手段は、前記センサからの温度データが加工ツールの異常として予め設定された閾値以上になったと判定した場合には、前記工作機械及び/又は加工ツール及び前記ツールホルダの動作を停止し、その動作の停止後、前記センサからの温度データが該閾値又は動作再開の温度として予め設定された温度値以下又未満になったと判定した場合には、前記工作機械及び加工ツール及び前記ツールホルダを動作が停止した時点の加工から再び開始するように動作制御手段による通常の動作制御を変更しても良い。
Further, 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, When it is determined that the temperature data from the sensor has exceeded 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. When 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.
加工ツールの刃先近傍の温度が上昇し、被加工物の加工精度が低下することに対して、この割込み制御を行うと刃先近傍の熱のこもり方や刃先の切れ味を正確かつ直接的に検知し、加工不良を回避することができるためより精度の高い加工を担保することができる。とりわけ工作機械に通常備えている回転主軸モータ負荷の値(ロードメータ値)は、過熱によって被加工物が軟化すると、モータ負荷の値が低下する可能性があり、この回転主軸モータ負荷の値だけでは刃先近傍の過熱による加工不良を十分に回避できないため有益である。
While the temperature near the cutting edge of the processing tool rises and the processing accuracy of the workpiece decreases, this interrupt control enables accurate and direct detection of how heat accumulates near the cutting edge and the sharpness of the cutting edge. Since defective machining can be avoided, more precise machining can be ensured. In particular, the value of the load on the rotary spindle motor (load meter value) that is usually included in machine tools may decrease if the workpiece softens due to overheating. Is advantageous because it is not possible to sufficiently avoid processing defects due to overheating near the cutting edge.
さらに他の例として前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも温度及び/又は加速度のデータを検出するツール用センサを有し、該ツール用センサからのデータを外部制御手段に無線送信するとともに、前記工作機械に前記工作機械の各部分の物理変化のデータを検出する工作機械用センサを有し、該工作機械用センサからのデータを外部制御手段に送信し、
外部制御手段は、前記ツール用センサ及び前記工作機械用センサからのデータが加工ツールの異常として予め設定された許容範囲外になったと判定した場合には、前記動作制御手段による前記工作機械及び前記加工ツールの通常の動作制御を予め定めた他の動作制御に変更する、ことも好ましい。 As still another example, 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. In addition, 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,
When the external control means determines that the data from the tool sensor and the machine tool sensor is outside the preset allowable range as a machining tool abnormality, 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.
外部制御手段は、前記ツール用センサ及び前記工作機械用センサからのデータが加工ツールの異常として予め設定された許容範囲外になったと判定した場合には、前記動作制御手段による前記工作機械及び前記加工ツールの通常の動作制御を予め定めた他の動作制御に変更する、ことも好ましい。 As still another example, 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. In addition, 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,
When the external control means determines that the data from the tool sensor and the machine tool sensor is outside the preset allowable range as a machining tool abnormality, 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.
本外部処理システムでは、加工ツールやツールホルダの温度・加速度の計測のみならず、工作機械の他の部分の物理量変化の計測データを外部制御手段で組み合わせて加工ツールの異常等を検知し、工作機械の動作を変更する。例えば、主軸回転用のスピンドルモータの電力やトルク、主軸に配設された加速度センサや変位計からの計測データなどを組み合わせて異常検知し、より詳細な異常判定、工作機械の外部動作制御が可能となる。
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
本発明の外部処理システムによれば、工作機械の工具等の加工ツールの加工中の物理変化の計測結果をリアルタイムに外部装置で無線等受信し、外部装置で異常等判定がなされた場合には、異常等を排除すべく工作機械の動作プログラム(NCプログラム)に割込み信号を送信して通常と異なる動作制御することができる。
According to the external processing system of the present invention, when the measurement result of the physical change during the machining of the machining tool such as the tool of the machine tool is wirelessly received in real time by the external device and the abnormality is judged by the external device, , 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.
以下、上述する本発明の工作機械の外部処理システムの概要及び具体的な処理フロー例について説明する。
The outline of the external processing system of the machine tool of the present invention described above and a specific processing flow example will be described below.
図1には、本外部処理システムにおいて工作機械の動作制御手段による動作変更制御を外部部制御手段で行う例の概要を示している。工作機械10は、その主軸4で加工ツール1を把持するツールホルダ3を装着し、主軸4を回転駆動させることで加工ツール1を回転させ、XYZ方向に移動するステージ5に載置された被加工物2の切削加工等を行う。主軸4はスピンドルモータで回転作動し、スピンドルモータはCNCプログラムに基づいて制御され、ステージ5はサーボモータで駆動し、同様にCNCプログラムに基づいて制御される。
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.
工作機械10のCNCは、工作機械10の操作パネル7で設定・確認することができる。これに加え、CNCプログラムはEthernet等の有線LANで外部パソコン8に送信することができる。CNCプログラムは、工作機械10の制御数値情報の変数(CNC)に基づいて工作機械10の動作制御を行うプログラムであり、CNCは、座標(例えばXYS座標)、加工ツール1の番号(例えば工具番号)、加工中か否か(例えば切削送り中か否か)、加工実行中のプログラム番号、加工実行中の行番号などを有している。
The CNC of the machine tool 10 can be set and confirmed on the operation panel 7 of the machine tool 10. In addition to this, 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.
また、ツールホルダ3には特許文献1に示すように加工ツール1内の熱電対6からの温度情報や加工ツール1(又はツールホルダ3)内の加速度センサ(図示せず)からの加速度情報等を外部に無線送信する送信ユニットが配設され、加工中の温度情報・加速度情報等がリアルタイムにWi-Fi、Blue-tooth、無線LAN等で外部パソコン8に無線送信される。
Further, in the tool holder 3, as shown in Patent Document 1, temperature information from the 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.
外部パソコン8に有線送信されたCNCプログラムと無線送信された加工ツール1の温度・加速度等情報とは、外部パソコン8で同一の時間軸のタイムチャートとして処理され、加工ツール1の破損等の異常を検知した場合には例えば警告灯9を点灯させて注意喚起する。このとき同時に外部パソコン8のディスプレイにも警告表示を行うことができる。
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. When is detected, for example, 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.
さらに、本外部処理システムによれば異常検知のみならず実際の加工の制御処理も外部パソコン8で行うことができる。異常が検知がされた場合、外部パソコン8からCNCグログラムに割込み信号が有線送信され、工作機械10やその主軸1、ステージ5の動作を変更制御するようにCNCの変数を書き込む。以下、具体例を示す。
Furthermore, according to this external processing system, not only the abnormality detection but also the actual processing control processing can be performed by the external personal computer 8. When an abnormality is detected, 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.
まず、加工ツール1の温度やツールホルダ3が受ける加速度(・力)によって干渉・衝突を検知した瞬間に加工ツール1の加工動作を急停止・加工ツール1を被加工物2から退避させる制御例を例示する。その処理フロー例が図2に示され、(a)に外部パソコン8における処理フロー例、(b)に工作機械10の動作制御を行うNCプログラムの処理フロー例を示している。外部パソコン側では(a)に示すように、処理(ST1)が開始されると、外部パソコン8が熱電対6からの温度情報やツールホルダ3内の加速度センサからの加速度情報や応力情報を読み取る(ST2)。
First, a control example in which the machining operation of the machining tool 1 is suddenly stopped at the moment when the interference/collision is detected due to the temperature of the machining tool 1 or the acceleration (/force) received by the tool holder 3, and the machining tool 1 is retracted from the workpiece 2. Is illustrated. An example of the processing flow is shown in FIG. 2, (a) shows an example of the processing flow in the external personal computer 8, and (b) shows an example of the processing flow of the NC program for controlling the operation of the machine tool 10. On the external personal computer side, as shown in (a), when the process (ST1) is started, 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).
次には外部パソコン8内で読取った温度・加速度・力が閾値に到達するか否かを判定する(ST3)。閾値は、加工条件に応じて加工ツール1の破損等する予兆としての温度・加速度・力を予め設定しておく。
Next, it is determined whether the temperature, acceleration, and force read in the external personal computer 8 reach the threshold value (ST3). As the threshold value, temperature, acceleration, and force as signs of damage to the processing tool 1 are preset according to the processing conditions.
温度・加速度・力が閾値以上の場合には、干渉や衝突を検知したとして工作機械1の急停止や加工ツール1の被加工物2からの退避動作を行うべくNCプログラムを変更する割込み信号を送信する(ST4)。そして、加工が終了等し測定継続が不要となると(ST5)、処理が終了する(ST6)。
If the temperature, acceleration, and force are above the threshold, it is determined that interference or collision has been detected, and an interrupt signal for changing the NC program to perform a sudden stop of the machine tool 1 or a retracting operation of the machining tool 1 from the workpiece 2 is issued. It is transmitted (ST4). Then, when the processing is completed and it is not necessary to continue the measurement (ST5), the processing is completed (ST6).
また、(b)に示すように工作機械10のNCプログラム側の処理フローとしては、処理(ST10=ST1)が開始され、割込み制御機能がONにされると(ST11)、割込み発生時に呼び出すサブプログラムを登録する(ST12)。サブプログラムとしては、工作機械10の急停止や加工ツール加工1の被加工物2からの退避動作(後述で例示する IF[#103 GE 123.4] GOTO 100)などである。そして、割込み信号を外部パソコン8から受信するとST12で登録したサブプログラムが実行され急停止や退避動作を行うよう制御される(ST14)。加工が終了すると割込み昨日がOFFとなり(ST15)、処理が終了する(ST16)。
Further, as shown in (b), as a processing flow on the NC program side of the machine tool 10, when the processing (ST10=ST1) is started and the interrupt control function is turned on (ST11), a sub-call to be called when an interrupt occurs. Register the program (ST12). The sub-programs include a sudden stop of the machine tool 10 and an evacuation operation of the machining tool machining 1 from the work piece 2 (IF[#103GEGE123.4]GOTO100, which will be illustrated later). Then, when the interrupt signal is received from the external personal computer 8, the subprogram registered in ST12 is executed and controlled to perform a quick stop or a save operation (ST14). When the processing is completed, the interrupt yesterday is turned off (ST15), and the processing is completed (ST16).
具体的に上述する加工ツール1の被加工物2からの退避動作として温度が123.4℃になると工具を退避させ、工具交換する割込み制御でCNC変数の変化及び割込み信号を例示する。CNC変数が時刻tにおいて加速度[m/s2]を#101,力(トルク:回転加速度)[rad/s2]を#102、温度[℃]を#103と割り当てている場合、閾値を120.4℃(#103=123.4)となる。また、NCプログラムのサブプログラムとして加工ツールの退避動作(IF[#103 GE 123.4] GOTO 100)として、100行目を加工ツール1の退避動作に規定しておく。そして、加工が進行し、例えば外部パソコン8に受信されたリアルタイム計測値が、時刻t1時点での#101=1.2、#102=234.5、#103=23.4、時刻t2時点での#101=23.4、#102=4567.8、#103=56.7、時刻t3時点での#101=67.8、#102=12345.6、#103=234.5と変化した場合、時刻t3時点では#103=234.5>123.4、すなわち閾値を超える(詳細には時刻t2からt3の間の時刻に閾値に到達)。このとき閾値を超えた時点でサブプログラムIF[#103 GE 123.4] GOTO 100を実行すると加工ツール1の退避動作及び交換動作が行われる。
Specifically, 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. When the CNC variable assigns acceleration [m/s2] to #101, force (torque: rotational acceleration) [rad/s2] to #102, and temperature [°C] to #103 at time t, the threshold value is 120.4°C ( #103 = 123.4). In addition, as the saving operation of the machining tool (IF[#103GE123.4]GOTO100) as a subprogram of the NC program, the 100th line is specified as the saving operation of the machining tool 1. Then, as the processing progresses, for example, the real-time measurement values received by the external personal computer 8 are #101=1.2, #102=234.5, #103=23.4 at time t1, #101=23.4 at time t2, When #102=4567.8, #103=56.7, #101=67.8 at time t3, #102=12345.6, #103=234.5, #103=234.5>123.4 at time t3, that is, the threshold value is exceeded ( For details, reach the threshold at the time between t2 and t3). At this time, if the subprogram IF [#103GEGE123.4] GOTO100 is executed when the threshold value is exceeded, the saving operation and replacement operation of the processing tool 1 are performed.
次に、加工ツール1の所謂「びびり」や被加工物2のバリが発生したと判断した瞬間に被加工物2に発生したツールマーク(加工痕)やバリ取りなどのサブプログラムを実行する制御例を例示する。その処理フロー例が図3に示され、(a)に外部パソコン8における処理フロー例、(b)に工作機械10の動作制御を行うNCプログラムの処理フロー例を示している。外部パソコン側では(a)に示すように、処理(ST20)が開始されると、外部パソコン8が図2同様に熱電対6からの温度情報やツールホルダ3内の加速度センサからの加速度情報や応力情報を読み取る(ST21)。次には外部パソコン8内で読取った温度・加速度・力が閾値に到達するか否かを判定する(ST22)。この閾値は、加工条件に応じて加工精度や加工ツール1の破損に影響する加工ツール1の「びびり」や看過できないバリの発生の条件を満たしたと考えられる温度・加速度・力を予め設定しておく。
Next, control for executing subprograms such as tool marks (machining marks) generated on the workpiece 2 and deburring at the moment when it is determined that so-called "chatter" of the machining tool 1 and burrs of the workpiece 2 have occurred. An example is illustrated. An example of the processing flow is shown in FIG. 3, (a) shows an example of the processing flow in the external personal computer 8, and (b) shows an example of the processing flow of the NC program for controlling the operation of the machine tool 10. On the external personal computer side, as shown in (a), when the process (ST20) is started, 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). Next, it is determined whether or not the temperature/acceleration/force read in the external personal computer 8 reaches the threshold value (ST22). 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.
温度・加速度・力が閾値以上の場合には、「びびり」やバリの発生を検知したとして被加工物2のツールマークの除去動作やバリ取り動作を行うべくNCプログラムを変更する割込み信号を送信する(ST23)。そして、加工が終了等し測定継続が不要となると(ST24)、処理が終了する(ST25)。
If the temperature, acceleration, or force is above the threshold, it is detected that "chatter" or burrs have occurred, and an interrupt signal is sent to change the NC program to perform the tool mark removal operation or deburring operation of the workpiece 2. (ST23). Then, when the processing is completed and it is not necessary to continue the measurement (ST24), the processing is completed (ST25).
また、(b)に示すように工作機械10のNCプログラム側の処理フローとしては、処理(ST30=ST20)が開始され、図2と同様に割込み制御機能がONにされると(ST31)、割込み発生時に呼び出すサブプログラムを登録する(ST32)。ここでのサブプログラムとしては、上記ツールマークの除去動作やバリ取り動作などである。例えば、加速度が50.0[m/s2]以上で「びびり」が発生したと判断し、バリ取りのサブプログラムをNCプログラムの101行目とする場合、上述の例で示すならば IF[#101 GE 50.0] GOTO 101 となる。そして、割込み信号を外部パソコン8から受信するとST32で登録したサブプログラムが実行され「びびり」の除去動作やバリ取り動作を行うよう制御される(ST34)。加工が終了すると割込み昨日がOFFとなり(ST35)、処理が終了する(ST36)。
Further, as shown in (b), as the processing flow on the NC program side of the machine tool 10, when the processing (ST30=ST20) is started and the interrupt control function is turned ON as in FIG. 2 (ST31), 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. Then, when the interrupt signal is received from the external personal computer 8, the sub program registered in ST32 is executed, and control is performed so as to perform the "chatter" removing operation and the deburring operation (ST34). When the processing ends, the interrupt yesterday is turned off (ST35), and the processing ends (ST36).
1…加工ツール
2…被加工物
3…ツールホルダ
4…主軸
5…ステージ
6…熱電対
7…操作パネル
8…外部パソコン(外部制御手段)
9…警告灯 1...Machining tool 2... Workpiece 3... Tool holder 4... Spindle 5... Stage 6... Thermocouple 7... Operation panel 8... External PC (external control means)
9... Warning light
2…被加工物
3…ツールホルダ
4…主軸
5…ステージ
6…熱電対
7…操作パネル
8…外部パソコン(外部制御手段)
9…警告灯 1...
9... Warning light
Claims (6)
- ワークを加工する加工ツールを有する工作機械の動作制御を外部から変更可能な外部処理システムであって、
前記加工ツール、該加工ツールを把持し工作機械の主軸に連結するツールホルダ、又は前記工作機械の物理変化をリアルタイムに検出し、そのデータを外部送信する計測手段と、
工作機械に備えられ、該工作機械及び前記加工ツール及びツールホルダの動作を制御する工作機械専用の動作制御手段と、
工作機械の外部に備えられる外部制御手段と、を備え、
前記外部制御手段は、無線双方向通信により前記計測手段からのデータを受信する受信手段と、該受信手段が受信した計測手段からのデータに基づいて前記動作制御手段による前記工作機械及び前記加工ツールの通常の動作制御を変更する外部制御手段と、を有する、工作機械の外部処理システム。 An external processing system capable of externally changing operation control of a machine tool having a processing tool for processing a work,
A machining tool, a tool holder that grips the machining tool and is connected to a spindle of a machine tool, or a measuring unit that detects a physical change of the machine tool in real time and externally transmits the data.
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 an external control means for changing the normal operation control of the external processing system of a machine tool. - 前記外部制御手段は、前記計測手段からのデータが予め定めた許容範囲か否かを判定し、該許容範囲外である場合には前記動作制御手段による通常の動作制御を変更する割込み信号を動作制御手段に送信する、請求項1に記載の工作機械の外部処理システム。 The external control means determines whether or not the data from the measuring means is within a predetermined allowable range, and if it is outside the allowable range, operates an interrupt signal for changing the normal operation control by the operation control means. The external processing system for a machine tool according to claim 1, which transmits to the control means.
- 前記動作制御手段は、前記動作制御手段による通常の動作制御を変更するときの通常と異なる他の制御態様を登録し、前記外部制御手段から前記動作制御手段による通常の動作制御を変更する割込み信号を受信した場合には、通常の制御態様に替えて登録された他の制御態様を実行する、請求項2に記載の工作機械の外部処理システム。 The operation control means registers another control mode different from normal when changing the normal operation control by the operation control means, and an interrupt signal for changing the normal operation control by the operation control means from the external control means. The external processing system for a machine tool according to claim 2, which executes another registered control mode in place of the normal control mode when the message is received.
- 前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも温度及び/又は加速度のデータを検出するセンサを有し、該センサからのデータを外部制御手段に無線送信し、
外部制御手段は、前記センサからのデータが加工ツールの異常として予め設定された閾値以上になったと判定した場合には、前記加工ツール及び前記ツールホルダの動作を停止し、工作機械が有する警告灯を点灯するように動作制御手段による通常の動作制御を変更する、請求項2又は3に記載の工作機械の外部処理システム。 The measuring means 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 means.
When 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 external processing system for a machine tool according to claim 2 or 3, wherein the normal operation control by the operation control means is changed to turn on. - 前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも温度及び/又は加速度のデータを検出するツール用センサを有し、該ツール用センサからのデータを外部制御手段に無線送信するとともに、前記工作機械に前記工作機械の各部分の物理変化のデータを検出する工作機械用センサを有し、該工作機械用センサからのデータを外部制御手段に送信し、
外部制御手段は、前記ツール用センサ及び前記工作機械用センサからのデータが加工ツールの異常として予め設定された許容範囲外になったと判定した場合には、前記動作制御手段による前記工作機械及び前記加工ツールの通常の動作制御を変更する、請求項1に記載の工作機械の外部処理システム。 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 has a sensor for machine tool that detects data of physical change of each part of the machine tool, and transmits data from the sensor for machine tool to an external control means,
When the external control means determines that the data from the tool sensor and the machine tool sensor is outside the preset allowable range as a machining tool abnormality, the operation control means causes the machine tool and the machine tool to operate. The external processing system for a machine tool according to claim 1, wherein the normal operation control of the processing tool is changed. - 前記計測手段は、前記加工ツール又は前記ツールホルダに少なくとも該加工ツールの温度データを検出するセンサを有し、該センサからの温度データを外部制御手段に無線送信し、
外部制御手段は、前記センサからの温度データが加工ツールの異常として予め設定された閾値以上になったと判定した場合には、前記工作機械及び/又は加工ツール及び前記ツールホルダの動作を停止し、その動作の停止後、前記センサからの温度データが該閾値又は動作再開の温度として予め設定された温度値以下又未満になったと判定した場合には、前記工作機械及び加工ツール及び前記ツールホルダを動作が停止した時点の加工から再び開始するように動作制御手段による通常の動作制御を変更する、請求項2又は3に記載の工作機械の外部処理システム。 The measuring means has at least a sensor for detecting temperature data of the processing tool in the processing tool or the tool holder, and wirelessly transmits temperature data from the sensor to an external control means,
When the external control means determines that the temperature data from the sensor has exceeded a preset threshold value as an abnormality of the processing tool, it stops the operation of the machine tool and/or the processing tool and the tool holder, After the operation is stopped, when it is determined that the temperature data from the sensor is equal to or lower than or lower than the preset temperature value as the threshold value or the temperature for restarting the operation, The external processing system for a machine tool according to claim 2 or 3, wherein the normal operation control by the operation control means is changed so as to restart from the processing when the operation is stopped.
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