JP7156123B2 - Machine tool and judgment method - Google Patents

Machine tool and judgment method Download PDF

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JP7156123B2
JP7156123B2 JP2019056574A JP2019056574A JP7156123B2 JP 7156123 B2 JP7156123 B2 JP 7156123B2 JP 2019056574 A JP2019056574 A JP 2019056574A JP 2019056574 A JP2019056574 A JP 2019056574A JP 7156123 B2 JP7156123 B2 JP 7156123B2
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relocation
resistor
relocation detection
connection
voltage
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JP2020160559A (en
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敬太 千賀
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Brother Industries Ltd
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Brother Industries Ltd
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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
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4065—Monitoring tool breakage, life or condition
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37616—Use same monitoring tools to monitor tool and workpiece
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Description

本発明は、自機の移設を検知する移設検知部の取外しを判定できる工作機械及び判定方法に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine tool and a determination method capable of determining removal of a relocation detection unit that detects relocation of the own machine.

従来から、工作機械の移設を監視する手段が普及されている。特許文献１には、ジャイロセンサを用いて工作機械の移設を検知する機器移設有無検知装置が開示されている。
他に、光センサを用いて工作機械の設置面（床）との距離変化を検知することによって、工作機械の移設を検知する技術も存在する。 Conventionally, means for monitoring relocation of machine tools have been widely used. Japanese Patent Laid-Open No. 2002-200002 discloses a machine tool relocation detection device that detects relocation of a machine tool using a gyro sensor.
In addition, there is a technique for detecting the relocation of a machine tool by detecting a change in distance from the installation surface (floor) of the machine tool using an optical sensor.

特開２００７－３３４３９５号公報JP 2007-334395 A

しかしながら、特許文献１の機器移設有無検知装置は、該機器移設有無検知装置を監視対象の工作機械から取り外した場合、監視対象の工作機械の移設が検知できなくなり、監視対象の工作機械の不正な移設等に対応できないという問題がある。このような問題は、上述の光センサを用いる場合も同様である。 However, when the equipment relocation detection device of Patent Document 1 is removed from the machine tool to be monitored, the equipment relocation detection device cannot detect the relocation of the machine tool to be monitored, and the machine tool to be monitored cannot be detected illegally. There is a problem that it is not possible to deal with relocation or the like. Such problems are the same when using the optical sensor described above.

本発明は、斯かる事情に鑑みてなされたものであり、その目的とするところは、簡単な構成にて移設検知部を取り外したか否かを判定でき、低コストで上述の問題を解決できる工作機械及び判定方法を提供することにある。 SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its object is to provide a tool that can determine whether or not a relocation detection unit has been removed with a simple configuration and that can solve the above-described problems at low cost. It is to provide a machine and a judgment method.

本発明に係る工作機械は、自機の移設を検知する移設検知部を備える工作機械において、前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知する通電検知機構と、前記通電検知機構の検知結果に基づいて、前記移設検知部を取外したか否かを判定する判定部とを備えることを特徴とする。 A machine tool according to the present invention is a machine tool comprising a relocation detection unit that detects relocation of the own machine, and an electrification detection mechanism that detects whether or not an attached portion to which the relocation detection unit is attached and the relocation detection unit are energized. and a determination unit that determines whether or not the relocation detection unit has been removed based on the detection result of the energization detection mechanism.

本発明にあっては、通電検知機構が移設検知部を取り付ける被取付部及び移設検知部が互いに通電しているか否かを検知する。例えば、通電検知機構が被取付部及び移設検知部が互いに通電していないと検知した場合、判定部は移設検知部を取外したと判定する。 In the present invention, the electrification detection mechanism detects whether or not the attached portion to which the relocation detection portion is attached and the relocation detection portion are electrically connected to each other. For example, when the electrification detection mechanism detects that the attached portion and the relocation detection portion are not energized to each other, the determination portion determines that the relocation detection portion has been removed.

本発明に係る工作機械は、前記通電検知機構は、電源に一端が接続し、他端が前記判定部に電気接続する第１抵抗と、前記第１抵抗の他端及び前記被取付部を電気接続する第１接続部と、前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部とを備えており、前記判定部は、前記第１抵抗及び前記第１接続部の間の第１電圧に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする。 In the machine tool according to the present invention, the energization detection mechanism includes a first resistor having one end connected to a power supply and the other end electrically connected to the determination section, and a second connection portion electrically connected to the first connection portion and connected to the power supply via a fixed potential, wherein the determination portion includes the first resistor and the first It is characterized in that whether or not the relocation detection unit has been removed is determined based on the first voltage between the connection portions.

本発明にあっては、電源、第１抵抗、第１接続部、被取付部及び第２接続部が所謂プルアップ回路を構成している。従って、被取付部を第１接続部又は第２接続部から外した場合、第１抵抗及び第１接続部の間の第１電圧が変化するので、判定部はこれに基づいて移設検知部を取外したか否かを判定する。 In the present invention, the power source, the first resistor, the first connecting portion, the attached portion and the second connecting portion constitute a so-called pull-up circuit. Therefore, when the attached portion is removed from the first connection portion or the second connection portion, the first voltage between the first resistor and the first connection portion changes, and the determination portion detects the relocation detection portion based on this. Determine whether or not it has been removed.

本発明に係る工作機械は、前記通電検知機構は、前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部とを備えており、前記第３接続部は前記第１接続部又は前記第２接続部と通電し、前記判定部は、前記第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定することを特徴とする。 In the machine tool according to the present invention, the energization detection mechanism includes: a second resistor having one end connected to the power supply and the other end connected to the determination unit; a third connection portion for connecting, the third connection portion being electrically connected to the first connection portion or the second connection portion; It is characterized in that whether or not the relocation detection unit has been removed is determined based on the second voltage between the three connection portions.

本発明にあっては、第２抵抗の一端が電源に接続し、他端が前記判定部に接続しており、第３接続部が前記第２抵抗の他端及び前記被取付部を電気接続する。従って、被取付部を第３接続部から外した場合、第２抵抗及び第３接続部の間の第２電圧が変化する。判定部は前記第１電圧及び前記第２電圧に基づいて移設検知部を取外したか否かを判定する。 In the present invention, one end of the second resistor is connected to the power supply, the other end is connected to the determination section, and the third connection section electrically connects the other end of the second resistor and the mounting section. do. Therefore, when the attached portion is removed from the third connecting portion, the second voltage between the second resistor and the third connecting portion changes. The determination unit determines whether or not the relocation detection unit has been removed based on the first voltage and the second voltage.

本発明に係る工作機械は、前記通電検知機構は、前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部と、前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備えており、前記判定部は、前記第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定することを特徴とする。 In the machine tool according to the present invention, the energization detection mechanism includes: a second resistor having one end connected to the power supply and the other end connected to the determination unit; and a fourth connection portion electrically connected to the third connection portion and connected to the power supply via a fixed potential. Whether or not the relocation detection unit has been removed is determined based on the resistance and the second voltage between the third connection unit.

本発明にあっては、電源、第２抵抗、第３接続部、被取付部及び第４接続部が所謂プルアップ回路を構成している。従って、被取付部を第３接続部又は第４接続部から外した場合、第２抵抗及び第３接続部の間の第２電圧が変化する。判定部は前記第１電圧及び前記第２電圧に基づいて移設検知部を取外したか否かを判定する。 In the present invention, the power source, the second resistor, the third connecting portion, the attached portion and the fourth connecting portion constitute a so-called pull-up circuit. Therefore, when the attached portion is removed from the third connection portion or the fourth connection portion, the second voltage between the second resistor and the third connection portion changes. The determination unit determines whether or not the relocation detection unit has been removed based on the first voltage and the second voltage.

本発明に係る工作機械は、前記判定部は、前記第１電圧及び前記第２電圧の少なくとも一方が閾値以上である場合、前記移設検知部を取外したと判定することを特徴とする。 The machine tool according to the present invention is characterized in that the determination section determines that the relocation detection section has been removed when at least one of the first voltage and the second voltage is equal to or higher than a threshold.

本発明にあっては、第１電圧及び第２電圧の少なくとも一方が閾値以上である場合、即ち、第１接続部、第２接続部、第３接続部及び第４接続部の少なくとも一つから被取付部を外した場合、判定部は移設検知部を取外したと判定する。 In the present invention, when at least one of the first voltage and the second voltage is equal to or higher than the threshold, that is, from at least one of the first connection portion, the second connection portion, the third connection portion and the fourth connection portion When the attached portion is removed, the determination unit determines that the relocation detection unit has been removed.

本発明に係る工作機械は、前記判定部は、前記第１電圧及び前記第２電圧の両方が閾値以上である場合、前記移設検知部を取外したと判定することを特徴とする。 The machine tool according to the present invention is characterized in that the determination unit determines that the relocation detection unit has been removed when both the first voltage and the second voltage are equal to or greater than a threshold value.

本発明にあっては、第１電圧及び第２電圧の両方が閾値以上である場合、即ち、第１接続部、第２接続部、第３接続部及び第４接続部の全てから被取付部を外した場合、判定部は移設検知部を取外したと判定する。 In the present invention, when both the first voltage and the second voltage are equal to or higher than the threshold, that is, all of the first connection portion, the second connection portion, the third connection portion and the fourth connection portion is removed, the determination unit determines that the relocation detection unit has been removed.

本発明に係る工作機械は、前記第１接続部及び前記第２接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする。 The machine tool according to the present invention is characterized in that at least one of the first connecting portion and the second connecting portion is a fixing member that fixes the relocation detection portion to the attached portion.

本発明にあっては、第１接続部及び第２接続部の少なくとも一つは移設検知部を被取付部に固定する例えばスタッドボスである。 In the present invention, at least one of the first connection portion and the second connection portion is, for example, a stud boss that fixes the relocation detection portion to the attached portion.

本発明に係る工作機械は、前記第３接続部及び前記第４接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする。 The machine tool according to the present invention is characterized in that at least one of the third connection portion and the fourth connection portion is a fixing member that fixes the relocation detection portion to the attached portion.

本発明にあっては、第３接続部及び第４接続部の少なくとも一つは移設検知部を被取付部に固定する例えばスタッドボスである。 In the present invention, at least one of the third connection portion and the fourth connection portion is, for example, a stud boss that fixes the relocation detection portion to the attached portion.

本発明に係る工作機械は、前記通電検知機構は、電源に一端が接続し、他端が前記判定部に電気接続する第１抵抗と、前記第１抵抗の他端及び前記被取付部を電気接続する第１接続部と、前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部と、前記第１抵抗の前記他端及び前記被取付部を電気接続する第３接続部と、前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備えており、前記判定部は、前記第１抵抗の前記他端の電圧に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする。 In the machine tool according to the present invention, the energization detection mechanism includes a first resistor having one end connected to a power supply and the other end electrically connected to the determination section, A first connection portion to be connected, a second connection portion that conducts electricity with the first connection portion and is connected to the power supply via a fixed potential, and the other end of the first resistor and the attached portion are electrically connected. a third connection portion; and a fourth connection portion that is electrically connected to the third connection portion and connected to the power supply via a fixed potential. It is characterized in that it is determined whether or not the relocation detection unit has been removed based on.

本発明にあっては、電源、第１抵抗、第１接続部、被取付部及び第２接続部が所謂プルアップ回路を構成している。従って、被取付部を第１接続部又は第２接続部から外した場合、前記第１抵抗の他端における電圧が変化する。また、前記電源、前記第１抵抗、第３接続部、前記被取付部及び第４接続部が別のプルアップ回路を構成している。従って、被取付部を第３接続部又は第４接続部から外した場合も、前記第１抵抗の他端における電圧が変化する。従って、判定部は前記第１抵抗の他端における電圧に基づいて移設検知部を取外したか否かを判定する。 In the present invention, the power source, the first resistor, the first connecting portion, the attached portion and the second connecting portion constitute a so-called pull-up circuit. Therefore, when the attached portion is removed from the first connecting portion or the second connecting portion, the voltage at the other end of the first resistor changes. Further, the power source, the first resistor, the third connecting portion, the attached portion and the fourth connecting portion constitute another pull-up circuit. Therefore, the voltage at the other end of the first resistor changes even when the attached portion is removed from the third connecting portion or the fourth connecting portion. Therefore, the determination unit determines whether or not the relocation detection unit has been removed based on the voltage at the other end of the first resistor.

本発明に係る工作機械は、前記第１接続部、前記第２接続部、前記第３接続部及び前記第４接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする。 In the machine tool according to the present invention, at least one of the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion is a fixing member for fixing the relocation detection portion to the attached portion. It is characterized by

本発明にあっては、第１接続部、第２接続部、第３接続部及び第４接続部の少なくとも一つは移設検知部を被取付部に固定する例えばスタッドボスである。 In the present invention, at least one of the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion is, for example, a stud boss for fixing the relocation detection portion to the attached portion.

本発明に係る判定方法は、自機の移設を検知する移設検知部を備える工作機械にて、前記移設検知部の取外しを判定する判定方法おいて、前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知し、前記検知の結果に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする。 A determination method according to the present invention is a machine tool having a relocation detection unit that detects relocation of the machine, and a determination method for determining removal of the relocation detection unit, wherein the attachment part to which the relocation detection unit is attached and the attachment part to which the relocation detection unit is attached and the It is characterized by detecting whether or not the relocation detection unit is energized, and determining whether or not the relocation detection unit has been removed based on the result of the detection.

本発明にあっては、前記移設検知部を取り付ける被取付部及び前記移設検知部が互いに通電しているか否かを検知し、例えば、被取付部及び移設検知部が通電していないと検知した場合、移設検知部を取外したと判定する。 In the present invention, it is detected whether or not the attached portion to which the relocation detection portion is attached and the relocation detection portion are energized to each other. If so, it is determined that the relocation detector has been removed.

本発明によれば、簡単な構成にて移設検知部を取り外したか否かを判定でき、移設検知部の取外しによって監視対象の工作機械の不正な移設等に対応できなくなる問題を解決できる。 According to the present invention, it is possible to determine whether or not the relocation detection unit has been removed with a simple configuration, and to solve the problem that the removal of the relocation detection unit makes it impossible to deal with unauthorized relocation of the machine tool to be monitored.

実施の形態１に係る工作機械を略示する斜視図である。1 is a schematic perspective view of a machine tool according to Embodiment 1; FIG. 実施の形態１に係る工作機械の要部構成を略示するブロック図である。1 is a schematic block diagram of a main configuration of a machine tool according to Embodiment 1; FIG. 実施の形態１に係る工作機械において、移設検知装置の取り付けを説明する説明図である。FIG. 5 is an explanatory diagram illustrating attachment of the relocation detection device in the machine tool according to Embodiment 1; 実施の形態１に係る工作機械の通電検知機構を表す概略的回路図である。2 is a schematic circuit diagram showing an energization detection mechanism of the machine tool according to Embodiment 1; FIG. 実施の形態２に係る工作機械の通電検知機構を表す概略的回路図である。FIG. 9 is a schematic circuit diagram showing an energization detection mechanism of a machine tool according to Embodiment 2; 実施の形態３に係る工作機械の通電検知機構を表す概略的回路図である。FIG. 11 is a schematic circuit diagram showing an energization detection mechanism of a machine tool according to Embodiment 3; 実施の形態４に係る工作機械の通電検知機構を表す概略的回路図である。FIG. 11 is a schematic circuit diagram showing an energization detection mechanism of a machine tool according to Embodiment 4;

以下に、本発明の実施の形態に係る工作機械を、図面に基づいて説明する。 A machine tool according to an embodiment of the present invention will be described below with reference to the drawings.

（実施の形態１）
図１は、実施の形態１に係る工作機械１００を略示する斜視図であり、図２は、実施の形態１に係る工作機械１００の要部構成を略示するブロック図である。工作機械１００は、基台１、機械本体２、機械カバー３、操作部４及び制御装置１０を備える。 (Embodiment 1)
FIG. 1 is a perspective view schematically showing a machine tool 100 according to Embodiment 1, and FIG. 2 is a block diagram schematically showing the essential configuration of the machine tool 100 according to Embodiment 1. As shown in FIG. A machine tool 100 includes a base 1 , a machine body 2 , a machine cover 3 , an operation section 4 and a control device 10 .

基台１は機械本体２を支持する。機械カバー３は機械本体２を覆う。制御装置１０は機械本体２の後側に取り付けている。操作部４は、表示部４ａ、スイッチ、ボタン及びタッチパネル等を有し、操作者の操作を受け付ける。 A base 1 supports a machine body 2 . A machine cover 3 covers the machine body 2 . A control device 10 is attached to the rear side of the machine body 2 . The operation unit 4 has a display unit 4a, switches, buttons, a touch panel, and the like, and receives operations by an operator.

機械本体２は、主軸駆動機構２ａ及びワーク保持部駆動機構２ｂを備える。主軸駆動機構２ａは、工具を装着する主軸の回転及び主軸の上下左右前後移動を実行する。ワーク保持部駆動機構２ｂは、ワークを保持するワーク保持部の回転を実行する。 The machine body 2 includes a spindle drive mechanism 2a and a workpiece holder drive mechanism 2b. The spindle drive mechanism 2a rotates a spindle on which a tool is mounted and moves the spindle vertically, horizontally, forwards and backwards. The work holding portion driving mechanism 2b rotates the work holding portion that holds the work.

制御装置１０は、ＣＰＵ１１、ＲＯＭ１２、ＲＡＭ１３、不揮発性メモリ１４及び入出力インタフェース（以下、入出力Ｉ／Ｆと言う。）１６等を備える。ＣＰＵ１１は、ＲＯＭ１２に格納した制御プログラムをＲＡＭ１３に読み出して、主軸駆動機構２ａ及びワーク保持部駆動機構２ｂ等を制御する。不揮発性メモリ１４は、例えばＥＥＰＲＯＭ（登録商標）、ＥＰＲＯＭ及びフラッシュメモリ等である。不揮発性メモリ１４に代えてハードディスクを使用してもよい。 The control device 10 includes a CPU 11, a ROM 12, a RAM 13, a nonvolatile memory 14, an input/output interface (hereinafter referred to as an input/output I/F) 16, and the like. The CPU 11 reads the control program stored in the ROM 12 to the RAM 13 and controls the spindle drive mechanism 2a, the work holding section drive mechanism 2b, and the like. The nonvolatile memory 14 is, for example, an EEPROM (registered trademark), an EPROM, a flash memory, or the like. A hard disk may be used instead of the nonvolatile memory 14 .

入出力Ｉ／Ｆ１６を介して、操作部４から制御装置１０に操作信号が入力する。入出力Ｉ／Ｆ１６を介して、制御装置１０から主軸駆動機構２ａ及びワーク保持部駆動機構２ｂ等に駆動／停止信号が出力する。 An operation signal is input from the operation unit 4 to the control device 10 via the input/output I/F 16 . Through the input/output I/F 16, a drive/stop signal is output from the control device 10 to the spindle drive mechanism 2a, the workpiece holder drive mechanism 2b, and the like.

工作機械１００は、電源５、電源スイッチ６及び移設検知装置２０を備える。電源スイッチ６は、電源５のオン／オフを切り替える。 The machine tool 100 includes a power supply 5 , a power switch 6 and a relocation detection device 20 . The power switch 6 switches the power supply 5 on/off.

移設検知装置２０は、工作機械１００に対して不正な移設又は不正な改造があったかを検知する。例えば、工作機械１００の電源オフ時に、閾値以上の振動を検知した場合、移設検知装置２０は、振動値が閾値を超過した旨の信号（超過信号）を制御装置１０に送信する。 The relocation detection device 20 detects whether the machine tool 100 has been illegally relocated or modified. For example, when the machine tool 100 is powered off and a vibration equal to or greater than a threshold is detected, the relocation detection device 20 transmits a signal (excess signal) indicating that the vibration value exceeds the threshold to the control device 10 .

移設検知装置２０は、電池２７、ＣＰＵ２１（判定部）、ＲＯＭ２２、ＲＡＭ２３、不揮発性メモリ２４、通電検知機構２８、振動センサ２５及び入出力インタフェース（以下、入出力Ｉ／Ｆと言う。）２６等を有する。ＣＰＵ２１は、ＲＯＭ２２に格納した制御プログラムをＲＡＭ２３に読み出して、工作機械１００の移設、改造を検知する処理を実行する。 The relocation detection device 20 includes a battery 27, a CPU 21 (determining unit), a ROM 22, a RAM 23, a nonvolatile memory 24, a current detection mechanism 28, a vibration sensor 25, an input/output interface (hereinafter referred to as an input/output I/F) 26, and the like. have The CPU 21 reads the control program stored in the ROM 22 to the RAM 23 and executes processing for detecting relocation or modification of the machine tool 100 .

不揮発性メモリ２４は、振動センサ２５が検知した振動値を比較するための閾値が記憶している。不揮発性メモリ２４は、例えばＥＥＰＲＯＭ（登録商標）、ＥＰＲＯＭ及びフラッシュメモリ等である。不揮発性メモリ２４に代えてハードディスクを使用してもよい。 The nonvolatile memory 24 stores a threshold value for comparing vibration values detected by the vibration sensor 25 . The non-volatile memory 24 is, for example, an EEPROM (registered trademark), an EPROM, a flash memory, or the like. A hard disk may be used instead of the nonvolatile memory 24 .

入出力Ｉ／Ｆ１６、２６を介して、電源スイッチ６は電源５のオン又はオフを示す信号を移設検知装置２０に入力する。振動センサ２５は工作機械１００の振動の大きさを検出する。振動センサ２５は、例えば、加速度センサ又はジャイロセンサを用いる。振動センサ２５にて検出した振動値が、予め設定した閾値を超過した場合、ＣＰＵ２１は、超過信号を制御装置１０に出力する。移設検知装置２０は電池２７を有しているので、電源５がオフの状態でも、上記処理が実行可能である。 The power switch 6 inputs a signal indicating whether the power source 5 is on or off to the relocation detection device 20 via the input/output I/Fs 16 and 26 . A vibration sensor 25 detects the magnitude of vibration of the machine tool 100 . The vibration sensor 25 uses, for example, an acceleration sensor or a gyro sensor. When the vibration value detected by the vibration sensor 25 exceeds a preset threshold value, the CPU 21 outputs an excess signal to the control device 10 . Since the relocation detection device 20 has the battery 27, the above process can be executed even when the power source 5 is off.

通電検知機構２８は、移設検知装置２０を取り付ける被取付部と移設検知装置２０が通電しているかを検知する。以下においては、説明の便宜上、移設検知装置２０を制御装置１０内に設けた場合を例に説明する。即ち、通電検知機構２８は、移設検知装置２０と制御装置１０の後述する板金１７（被取付部）とが通電状態であるかを検知する。通電検知機構２８は検知結果を、ＣＰＵ２１に出力する。通電検知機構２８についての詳しいことは後述する。 The energization detection mechanism 28 detects whether or not the portion to which the relocation detection device 20 is attached and the relocation detection device 20 are energized. In the following, for convenience of explanation, the case where the relocation detection device 20 is provided in the control device 10 will be explained as an example. That is, the energization detection mechanism 28 detects whether or not the relocation detection device 20 and the sheet metal 17 (attached portion) of the control device 10, which will be described later, are in an energized state. The energization detection mechanism 28 outputs the detection result to the CPU 21 . Details of the energization detection mechanism 28 will be described later.

制御装置１０及び移設検知装置２０は、工作機械１００に対する不正な移設又は不正な改造があったと判定した場合、以降における工作機械１００の運転を制限する。例えば、工作機械１００の電源オフ時に、振動センサ２５が振動を検知し、検知した振動が閾値以上である場合、移設検知装置２０は超過信号を制御装置１０に送信する。超過信号を受信した制御装置１０（ＣＰＵ１１）は、警告を表示する指示信号を表示部４ａに出力すると共に、機械本体２の運転を禁止する。例えば、ＣＰＵ１１は、以降、操作部４から受信する主軸駆動機構２ａ又はワーク保持部駆動機構２ｂを駆動する駆動信号を無視する。 If it is determined that the machine tool 100 has been illegally relocated or modified, the control device 10 and the relocation detection device 20 restrict the operation of the machine tool 100 thereafter. For example, when the machine tool 100 is powered off, the vibration sensor 25 detects vibration, and if the detected vibration is equal to or greater than a threshold value, the relocation detection device 20 transmits an excess signal to the control device 10 . The control device 10 (CPU 11) that has received the excess signal outputs an instruction signal for displaying a warning to the display section 4a and prohibits the operation of the machine body 2. FIG. For example, the CPU 11 ignores drive signals for driving the spindle drive mechanism 2a or the workpiece holder drive mechanism 2b received from the operation unit 4 thereafter.

一方、制御装置１０は、移設検知装置２０が出力する超過信号に応じて、工作機械１００の運転を制限する。移設検知装置２０が超過信号を出力しない場合、換言すれば、不正の意図で移設検知装置２０を工作機械１００から取り外した場合は、不正な移設又は不正な改造があったとしても、制御装置１０による工作機械１００の運転の制限は出来ない。実施の形態１に係る工作機械１００は、このような問題に対応できる。 On the other hand, the control device 10 limits the operation of the machine tool 100 according to the excess signal output by the relocation detection device 20 . If the relocation detection device 20 does not output the excess signal, in other words, if the relocation detection device 20 is removed from the machine tool 100 with unauthorized intention, even if there is unauthorized relocation or unauthorized modification, the control device 10 It is not possible to restrict the operation of the machine tool 100 by The machine tool 100 according to Embodiment 1 can deal with such problems.

図３は、実施の形態１に係る工作機械１００において、移設検知装置２０の取り付けを説明する説明図である。
実施の形態１に係る工作機械１００では、導電性のスタッドボス１７１及びネジ１７２を用いて、移設検知装置２０を、制御装置１０の板金１７に固定している。移設検知装置２０を構成する基板２９の四隅には基板２９を厚み方向に貫通する貫通孔を形成しており、各貫通孔にネジ１７２（固定部材）を挿通してスタッドボス１７１にネジ止めすることによって、移設検知装置２０（基板２９）を板金１７に取り付ける。スタッドボス１７１は、スタッドボス１７１Ａ‐スタッドボス１７１Ｄ（固定部材）の４つであり、何れも基板２９及び板金１７の間に介在する。基板２９は矩形であって絶縁性であり、スタッドボス１７１Ａ（第１接続部）及びスタッドボス１７１Ｂ（第２接続部）と、スタッドボス１７１Ｃ（第３接続部）及び不図示のスタッドボス１７１Ｄ（第４接続部）は板金１７を介して通電できる。 FIG. 3 is an explanatory diagram for explaining attachment of the relocation detection device 20 in the machine tool 100 according to the first embodiment.
In machine tool 100 according to Embodiment 1, conductive stud bosses 171 and screws 172 are used to fix relocation detection device 20 to sheet metal 17 of control device 10 . Through-holes are formed in the four corners of the substrate 29 that constitutes the relocation detection device 20 and pass through the substrate 29 in the thickness direction. Thus, the relocation detection device 20 (substrate 29 ) is attached to the metal plate 17 . There are four stud bosses 171 : stud bosses 171 A to 171 D (fixing members), all of which are interposed between the substrate 29 and the sheet metal 17 . The substrate 29 is rectangular and insulative, and includes stud bosses 171A (first connection portion), stud bosses 171B (second connection portion), stud bosses 171C (third connection portion), and stud bosses 171D (not shown). (4th connecting portion) can be energized through the metal plate 17 .

移設検知装置２０の基板２９に通電検知機構２８を構成しており、通電検知機構２８は、板金１７を用いて、移設検知装置２０の取り外しを検出する回路を構成する。図４は、実施の形態１に係る工作機械１００の通電検知機構２８を表す概略的回路図である。 An energization detection mechanism 28 is configured on the substrate 29 of the relocation detection device 20 , and the energization detection mechanism 28 uses the metal plate 17 to configure a circuit for detecting detachment of the relocation detection device 20 . FIG. 4 is a schematic circuit diagram showing the energization detection mechanism 28 of the machine tool 100 according to Embodiment 1. As shown in FIG.

通電検知機構２８は、例えば５Ｖの電池からなる電源２８１を有する。これに限るものでなく、移設検知装置２０の電池２７を兼用する構成であっても良い。
電源２８１の一端には抵抗２８２（第１抵抗）の一端が電気接続しており、電源２８１の他端にはＧＮＤとしての導電体２８３（固定電位）が電気接続している。抵抗２８２は例えば１０－５０ｋΩである。 The energization detection mechanism 28 has a power source 281 made up of, for example, a 5V battery. The configuration is not limited to this, and the battery 27 of the relocation detection device 20 may also be used.
One end of the power supply 281 is electrically connected to one end of a resistor 282 (first resistor), and the other end of the power supply 281 is electrically connected to a conductor 283 (fixed potential) as GND. Resistor 282 is, for example, 10-50 kΩ.

抵抗２８２の他端は、接続ノードＤ１にて２つに分岐している。前記２つのうち、一方はＣＰＵ２１の第１入力端子２１１に電気接続しており、他方はスタッドボス１７１Ａに電気接続している。ＣＰＵ２１は導電体２８３に電気接続している。これに限るものでなく、ＣＰＵ２１に代えてＧＰＵ、マイクロコントローラ等であっても良い。 The other end of resistor 282 branches into two at connection node D1. One of the two is electrically connected to the first input terminal 211 of the CPU 21, and the other is electrically connected to the stud boss 171A. CPU 21 is electrically connected to conductor 283 . The present invention is not limited to this, and the CPU 21 may be replaced with a GPU, a microcontroller, or the like.

スタッドボス１７１Ａはスタッドボス１７１Ｂと通電しており、スタッドボス１７１Ｂは導電体２８３に電気接続している。即ち、スタッドボス１７１Ｂは導電体２８３を介して電源２８１と電気接続している。通電検知機構２８はいわゆるプルアップ回路を構成している。 The stud boss 171A is electrically connected to the stud boss 171B, and the stud boss 171B is electrically connected to the conductor 283. As shown in FIG. That is, the stud boss 171B is electrically connected to the power supply 281 through the conductor 283. As shown in FIG. The energization detection mechanism 28 constitutes a so-called pull-up circuit.

従って、スタッドボス１７１Ａ及びスタッドボス１７１Ｂが接続ノードＤ１に電気接続している場合、即ち、移設検知装置２０が板金１７に固定している場合は、電源２８１からの電流は、抵抗２８２、接続ノードＤ１、スタッドボス１７１Ａ、板金１７、スタッドボス１７１Ｂ及び導電体２８３の順に流れる。この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。 Therefore, when the stud boss 171A and the stud boss 171B are electrically connected to the connection node D1, that is, when the relocation detection device 20 is fixed to the metal plate 17, the current from the power source 281 flows through the resistor 282 and the connection node D1. D1, stud boss 171A, sheet metal 17, stud boss 171B and conductor 283 flow in this order. At this time, the voltage between the resistor 282 and the stud boss 171A, that is, the first voltage input to the first input terminal 211 of the CPU 21 is "0 (zero) V".

一方、スタッドボス１７１Ａ又はスタッドボス１７１Ｂが接続ノードＤ１に電気接続していない場合、即ち、移設検知装置２０を板金１７（スタッドボス１７１Ａ）から取り外した場合は、電源２８１からの電流は、接続ノードＤ１からスタッドボス１７１Ａ側に流れなくなり、この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「５Ｖ」になる。 On the other hand, when the stud boss 171A or the stud boss 171B is not electrically connected to the connection node D1, that is, when the relocation detection device 20 is removed from the metal plate 17 (stud boss 171A), the current from the power source 281 is not connected to the connection node D1. At this time, the voltage between the resistor 282 and the stud boss 171A, that is, the first voltage input to the first input terminal 211 of the CPU 21 becomes "5V".

従って、ＣＰＵ２１は、第１入力端子２１１に入力する第１電圧を監視し、第１電圧が閾値（例えば、１Ｖ）より大きい場合、移設検知装置２０を板金１７から取り外したと判定することができる。ＣＰＵ２１は、移設検知装置２０を板金１７から取り外したと判定した場合、制御装置１０に超過信号を送出する。超過信号を受信した制御装置１０は、警告を表示する指示信号を表示部４ａに出力すると共に、機械本体２の運転を禁止する。 Therefore, the CPU 21 can monitor the first voltage input to the first input terminal 211 and determine that the relocation detection device 20 has been removed from the metal plate 17 when the first voltage is greater than a threshold (for example, 1 V). When the CPU 21 determines that the relocation detection device 20 has been removed from the metal plate 17 , the CPU 21 sends an excess signal to the control device 10 . Upon receiving the excess signal, the control device 10 outputs an instruction signal for displaying a warning to the display section 4a and prohibits the operation of the machine body 2. FIG.

以上においては、通電検知機構２８がスタッドボス１７１Ａ及びスタッドボス１７１Ｂに電気接続している場合を例に説明したが、これに限るものではない。通電検知機構２８がスタッドボス１７１Ｃ及びスタッドボス１７１Ｄに電気接続するように構成しても良い。 In the above description, the case where the energization detection mechanism 28 is electrically connected to the stud boss 171A and the stud boss 171B has been described as an example, but the present invention is not limited to this. The energization detection mechanism 28 may be configured to be electrically connected to the stud boss 171C and the stud boss 171D.

このように、実施の形態１に係る工作機械１００は、移設検知装置２０を板金１７から取り外した場合、迅速に検知でき、不正な移設検知装置２０の取り外しに素早く対応できる。更に、実施の形態１に係る工作機械１００は、簡単な構造にて低コストで移設検知装置２０の不正な取り外しを検知することができる。 As described above, the machine tool 100 according to Embodiment 1 can quickly detect when the relocation detection device 20 is removed from the metal plate 17, and can quickly deal with unauthorized removal of the relocation detection device 20. FIG. Furthermore, the machine tool 100 according to Embodiment 1 can detect unauthorized removal of the relocation detection device 20 with a simple structure and at low cost.

（実施の形態２）
図５は、実施の形態２に係る工作機械１００の通電検知機構２８Ａを表す概略的回路図である。 (Embodiment 2)
FIG. 5 is a schematic circuit diagram showing energization detection mechanism 28A of machine tool 100 according to the second embodiment.

通電検知機構２８Ａは、例えば５Ｖの電池からなる電源２８１を有する。これに限るものでなく、移設検知装置２０の電池２７を兼用する構成であっても良い。
電源２８１の一端は、接続ノードＤ２にて２つに分岐している。前記２つのうち、一方には抵抗２８２の一端が電気接続しており、他方には抵抗２８４（第２抵抗）の一端が電気接続している。電源２８１の他端には導電体２８３が電気接続しており、抵抗２８２及び抵抗２８４は例えば１０－５０ｋΩである。 The energization detection mechanism 28A has a power supply 281 made up of, for example, a 5V battery. The configuration is not limited to this, and the battery 27 of the relocation detection device 20 may also be used.
One end of the power supply 281 is branched into two at the connection node D2. One end of the resistor 282 is electrically connected to one of the two, and one end of the resistor 284 (second resistor) is electrically connected to the other. A conductor 283 is electrically connected to the other end of the power supply 281, and resistors 282 and 284 are, for example, 10-50 kΩ.

抵抗２８２の他端は、接続ノードＤ１にて２つに分岐しており、一方はＣＰＵ２１の第１入力端子２１１に電気接続しており、他方はスタッドボス１７１Ａに電気接続している。ＣＰＵ２１は導電体２８３に電気接続している。これに限るものではなく、ＣＰＵ２１に代えてＧＰＵ、マイクロコンピュータ等であっても良い。 The other end of the resistor 282 is branched into two at the connection node D1, one of which is electrically connected to the first input terminal 211 of the CPU 21, and the other of which is electrically connected to the stud boss 171A. CPU 21 is electrically connected to conductor 283 . The CPU 21 is not limited to this, and a GPU, a microcomputer, or the like may be used in place of the CPU 21 .

スタッドボス１７１Ａはスタッドボス１７１Ｂと板金１７を介して通電しており、スタッドボス１７１Ｂは導電体２８３に電気接続している。ただし、板金１７は、スタッドボス１７１Ａとスタッドボス１７１Ｂを有する側と、スタッドボス１７１Ｃとスタッドボス１７１Ｄを有する側とで２分割されている。 The stud boss 171A is electrically connected to the stud boss 171B through the sheet metal 17, and the stud boss 171B is electrically connected to the conductor 283. As shown in FIG. However, the sheet metal 17 is divided into two parts, one side having the stud bosses 171A and 171B and the other side having the stud bosses 171C and 171D.

抵抗２８４の他端は、接続ノードＤ３にて２つに分岐しており、一方はＣＰＵ２１の第２入力端子２１２に電気接続しており、他方はスタッドボス１７１Ｃに電気接続している。スタッドボス１７１Ｃはスタッドボス１７１Ｄと板金１７を介して通電しており、スタッドボス１７１Ｄは導電体２８３に電気接続している。即ち、スタッドボス１７１Ｄは導電体２８３を介して電源２８１と電気接続している。 The other end of the resistor 284 is branched into two at the connection node D3, one of which is electrically connected to the second input terminal 212 of the CPU 21, and the other of which is electrically connected to the stud boss 171C. The stud boss 171C is electrically connected to the stud boss 171D through the sheet metal 17, and the stud boss 171D is electrically connected to the conductor 283. As shown in FIG. That is, the stud boss 171D is electrically connected to the power supply 281 through the conductor 283. As shown in FIG.

従って、スタッドボス１７１Ａ及びスタッドボス１７１Ｂが接続ノードＤ１に電気接続している場合、電源２８１からの電流は、接続ノードＤ２、抵抗２８２、接続ノードＤ１、スタッドボス１７１Ａ、板金１７、スタッドボス１７１Ｂ及び導電体２８３の順に流れる。この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。 Therefore, when stud boss 171A and stud boss 171B are electrically connected to connection node D1, the current from power supply 281 flows through connection node D2, resistor 282, connection node D1, stud boss 171A, sheet metal 17, stud boss 171B and It flows in order of the conductor 283 . At this time, the voltage between the resistor 282 and the stud boss 171A, that is, the first voltage input to the first input terminal 211 of the CPU 21 is "0 (zero) V".

また、スタッドボス１７１Ｃ及びスタッドボス１７１Ｄが接続ノードＤ３に電気接続している場合、電源２８１からの電流は、接続ノードＤ２、抵抗２８４、接続ノードＤ３、スタッドボス１７１Ｃ、板金１７、スタッドボス１７１Ｄ及び導電体２８３の順に流れる。この際、抵抗２８４及びスタッドボス１７１Ｃの間の電圧、即ち、ＣＰＵ２１の第２入力端子２１２に入力される第２電圧は「０（零）Ｖ」である。 Further, when the stud boss 171C and the stud boss 171D are electrically connected to the connection node D3, the current from the power supply 281 flows through the connection node D2, the resistor 284, the connection node D3, the stud boss 171C, the metal plate 17, the stud boss 171D and the It flows in order of the conductor 283 . At this time, the voltage between the resistor 284 and the stud boss 171C, that is, the second voltage input to the second input terminal 212 of the CPU 21 is "0 (zero) V".

即ち、移設検知装置２０が板金１７に正しく固定している場合は、第１入力端子２１１に入力される第１電圧及び第２入力端子２１２に入力される第２電圧は共に「０Ｖ」である。 That is, when the relocation detection device 20 is correctly fixed to the metal plate 17, both the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 are "0 V". .

一方、スタッドボス１７１Ａ又はスタッドボス１７１Ｂが接続ノードＤ１に電気接続していない場合、電源２８１からの電流は、接続ノードＤ１からスタッドボス１７１Ａ側に流れなくなり、この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「５Ｖ」になる。 On the other hand, when the stud boss 171A or the stud boss 171B is not electrically connected to the connection node D1, the current from the power supply 281 does not flow from the connection node D1 to the stud boss 171A side. The voltage in between, that is, the first voltage input to the first input terminal 211 of the CPU 21 is "5V".

スタッドボス１７１Ｃ又はスタッドボス１７１Ｄが接続ノードＤ３に接続していない場合、電源２８１からの電流は、接続ノードＤ３からスタッドボス１７１Ｃ側に流れなくなり、この際、抵抗２８４及びスタッドボス１７１Ｃの間の電圧、即ち、ＣＰＵ２１の第２入力端子２１２に入力される第２電圧は「５Ｖ」になる。 When the stud boss 171C or the stud boss 171D is not connected to the connection node D3, the current from the power supply 281 does not flow from the connection node D3 to the stud boss 171C side, and the voltage between the resistor 284 and the stud boss 171C That is, the second voltage input to the second input terminal 212 of the CPU 21 becomes "5V".

移設検知装置２０を板金１７から取り外そうとした場合、即ち、移設検知装置２０をスタッドボス１７１Ａ－スタッドボス１７１Ｄの何れか一つから取り外した場合、第１入力端子２１１に入力される第１電圧又は第２入力端子２１２に入力される第２電圧が「５Ｖ」になる。
また、移設検知装置２０を板金１７から取り外した場合は、即ち、スタッドボス１７１Ａ及びスタッドボス１７１Ｂの何れか一つから移設検知装置２０を取外し、スタッドボス１７１Ｃ及びスタッドボス１７１Ｄの何れか一つから移設検知装置２０を取り外した場合、第１入力端子２１１に入力される第１電圧及び第２入力端子２１２に入力される第２電圧が「５Ｖ」になる。 When the relocation detection device 20 is to be removed from the metal plate 17, that is, when the relocation detection device 20 is removed from any one of the stud bosses 171A to 171D, the first The voltage or the second voltage input to the second input terminal 212 becomes "5V".
Further, when the relocation detection device 20 is removed from the metal plate 17, that is, the relocation detection device 20 is removed from either the stud boss 171A or the stud boss 171B, and the relocation detection device 20 is removed from either the stud boss 171C or the stud boss 171D. When the relocation detection device 20 is removed, the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 become "5V".

従って、ＣＰＵ２１は、第１入力端子２１１に入力する第１電圧及び第２入力端子２１２に入力される第２電圧を監視し、移設検知装置２０を板金１７から取り外そうとしているか、移設検知装置２０を板金１７から取り外したかを検知することができる。
第１電圧又は第２電圧の何れか一方が閾値（例えば、１Ｖ）より大きい場合、ＣＰＵ２１は、移設検知装置２０を板金１７から取り外そうとしていると判定することができる。第１電圧及び第２電圧の両方が閾値より大きい場合、ＣＰＵ２１は、移設検知装置２０を板金１７から取り外したと判定することができる。 Therefore, the CPU 21 monitors the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 to determine whether the relocation detection device 20 is being removed from the metal plate 17 or not. It is possible to detect whether or not 20 has been removed from the sheet metal 17 .
If either the first voltage or the second voltage is greater than a threshold value (for example, 1 V), the CPU 21 can determine that the relocation detection device 20 is about to be removed from the metal plate 17 . When both the first voltage and the second voltage are greater than the threshold, the CPU 21 can determine that the relocation detection device 20 has been removed from the metal plate 17 .

第１電圧又は第２電圧の少なくとも一方が閾値より大きい場合、即ち、スタッドボス１７１Ａ－スタッドボス１７１Ｄの少なくとも一つから移設検知装置２０を取外した場合、ＣＰＵ２１は移設検知装置２０を板金１７から取り外したと判定しても良い。 When at least one of the first voltage and the second voltage is greater than the threshold, that is, when the relocation detection device 20 is removed from at least one of the stud bosses 171A to 171D, the CPU 21 removes the relocation detection device 20 from the metal plate 17. It can be judged that

以上の如く、移設検知装置２０を板金１７から取り外したと判定した場合、ＣＰＵ２１は、制御装置１０に超過信号を送出する。超過信号を受信した制御装置１０は、警告を表示する指示信号を表示部４ａに出力すると共に、機械本体２の運転を禁止する。よって、移設検知装置２０の取り外しを未然に防止できる。 As described above, when determining that the relocation detection device 20 has been removed from the metal plate 17, the CPU 21 sends an excess signal to the control device 10. FIG. Upon receiving the excess signal, the control device 10 outputs an instruction signal for displaying a warning to the display section 4a and prohibits the operation of the machine body 2. FIG. Therefore, removal of the relocation detection device 20 can be prevented.

何らかの理由により、スタッドボス１７１Ａ－スタッドボス１７１Ｄの何れか一つを取り外すことも想定できるので、第１電圧及び第２電圧の両方が閾値より大きい場合のみ、ＣＰＵ２１が制御装置１０に超過信号を送出するようにしても良い。 For some reason, any one of the stud bosses 171A to 171D can be assumed to be removed, so the CPU 21 sends an excess signal to the control device 10 only when both the first voltage and the second voltage are greater than the threshold. You can make it work.

実施の形態２に係る工作機械１００はこれに限るものではない。第１電圧又は第２電圧の何れか一方が閾値より大きい場合、ＣＰＵ２１は制御装置１０に第一回目の超過信号を送出し、第１回目の超過信号を受信した制御装置１０は、警告を表示する指示信号を表示部４ａに出力する。この際、機械本体２の運転禁止行わない。
以降、第１電圧及び第２電圧の両方が閾値より大きい場合、ＣＰＵ２１は制御装置１０に第２回目の超過信号を送出し、第２回目の超過信号を受信した制御装置１０が機械本体２の運転を禁止するように構成しても良い。 The machine tool 100 according to Embodiment 2 is not limited to this. If either the first voltage or the second voltage is greater than the threshold, the CPU 21 sends a first excess signal to the control device 10, and the control device 10 that receives the first excess signal displays a warning. Then, an instruction signal is output to the display unit 4a. At this time, the operation of the machine body 2 is not prohibited.
After that, when both the first voltage and the second voltage are higher than the threshold, the CPU 21 sends a second excess signal to the control device 10 , and the control device 10 receives the second excess signal. It may be configured to prohibit driving.

このように、実施の形態２に係る工作機械１００は、移設検知装置２０を板金１７から取り外そうとした場合、及び、移設検知装置２０を板金１７から取り外した場合、迅速に検知でき、不正な移設検知装置２０の取り外しに素早く対応できる。更に、実施の形態２に係る工作機械１００は、簡単な構造にて低コストで移設検知装置２０の不正な取り外しを検知することができる。 As described above, the machine tool 100 according to the second embodiment can quickly detect an attempt to remove the relocation detection device 20 from the metal plate 17 and when the relocation detection device 20 is removed from the metal plate 17. Therefore, it is possible to quickly cope with the removal of the relocation detection device 20.例文帳に追加Furthermore, the machine tool 100 according to Embodiment 2 can detect unauthorized removal of the relocation detection device 20 with a simple structure and at low cost.

実施の形態１と同様の部分については、同一の符号を付して詳細な説明を省略する。 The same reference numerals are assigned to the same parts as in the first embodiment, and detailed description thereof will be omitted.

（実施の形態３）
図６は、実施の形態３に係る工作機械１００の通電検知機構２８Ｂを表す概略的回路図である。 (Embodiment 3)
FIG. 6 is a schematic circuit diagram showing energization detection mechanism 28B of machine tool 100 according to the third embodiment.

通電検知機構２８Ｂは、例えば５Ｖの電池からなる電源２８１を有する。これに限るものでなく、移設検知装置２０の電池２７を兼用する構成であっても良い。
電源２８１の一端には抵抗２８２の一端が電気接続しており、電源２８１の他端には導電体２８３が電気接続している。抵抗２８２は例えば１０－５０ｋΩである。 The energization detection mechanism 28B has a power supply 281 made up of, for example, a 5V battery. The configuration is not limited to this, and the battery 27 of the relocation detection device 20 may also be used.
One end of the power source 281 is electrically connected to one end of the resistor 282 , and the other end of the power source 281 is electrically connected to the conductor 283 . Resistor 282 is, for example, 10-50 kΩ.

抵抗２８２の他端は、接続ノードＤ１にて３つに分岐しており、３つのうち、１つ目はＣＰＵ２１の第１入力端子２１１に電気接続しており、２つ目はスタッドボス１７１Ａに電気接続しており、３つ目はスタッドボス１７１Ｃに電気接続している。ＣＰＵ２１は導電体２８３に電気接続している。 The other end of the resistor 282 is branched into three at the connection node D1. Of the three, the first is electrically connected to the first input terminal 211 of the CPU 21, and the second is connected to the stud boss 171A. The third is electrically connected to the stud boss 171C. CPU 21 is electrically connected to conductor 283 .

スタッドボス１７１Ａはスタッドボス１７１Ｂと板金１７を介して通電しており、スタッドボス１７１Ｂは導電体２８３に電気接続している。スタッドボス１７１Ｃはスタッドボス１７１Ｄと板金１７を介して通電しており、スタッドボス１７１Ｄは導電体２８３に電気接続している。ただし、板金１７は、スタッドボス１７１Ａとスタッドボス１７１Ｂを有する側と、スタッドボス１７１Ｃとスタッドボス１７１Ｄを有する側とで２分割されている。 The stud boss 171A is electrically connected to the stud boss 171B through the sheet metal 17, and the stud boss 171B is electrically connected to the conductor 283. As shown in FIG. The stud boss 171C is electrically connected to the stud boss 171D through the sheet metal 17, and the stud boss 171D is electrically connected to the conductor 283. As shown in FIG. However, the sheet metal 17 is divided into two parts, one side having the stud bosses 171A and 171B and the other side having the stud bosses 171C and 171D.

従って、スタッドボス１７１Ａ及びスタッドボス１７１Ｂが接続ノードＤ１に電気接続している場合、電源２８１からの電流は、抵抗２８２、接続ノードＤ１、スタッドボス１７１Ａ、板金１７、スタッドボス１７１Ｂ及び導電体２８３の順に流れる。また、スタッドボス１７１Ｃ及びスタッドボス１７１Ｄが接続ノードＤ１に電気接続している場合、電源２８１からの電流は、抵抗２８２、接続ノードＤ１、スタッドボス１７１Ｃ、板金１７、スタッドボス１７１Ｄ及び導電体２８３の順に流れる。
この際、接続ノードＤ１における電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。 Therefore, when the stud boss 171A and the stud boss 171B are electrically connected to the connection node D1, the current from the power supply 281 flows through the resistor 282, the connection node D1, the stud boss 171A, the metal plate 17, the stud boss 171B and the conductor 283. flow in order. Further, when the stud boss 171C and the stud boss 171D are electrically connected to the connection node D1, the current from the power supply 281 flows through the resistor 282, the connection node D1, the stud boss 171C, the metal plate 17, the stud boss 171D and the conductor 283. flow in order.
At this time, the voltage at the connection node D1, that is, the first voltage input to the first input terminal 211 of the CPU 21 is "0 (zero) V".

実施の形態３に係る工作機械１００においては、スタッドボス１７１Ａ又はスタッドボス１７１Ｂが接続ノードＤ１に電気接続していない場合であって、スタッドボス１７１Ｃ及びスタッドボス１７１Ｄが接続ノードＤ３に接続している場合、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。
また、スタッドボス１７１Ｃ又はスタッドボス１７１Ｄが接続ノードＤ１に電気接続していない場合であって、スタッドボス１７１Ａ及びスタッドボス１７１Ｂが接続ノードＤ３に接続している場合も、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。 In machine tool 100 according to Embodiment 3, stud boss 171A or stud boss 171B is not electrically connected to connection node D1, and stud boss 171C or stud boss 171D is connected to connection node D3. In this case, the first voltage input to the first input terminal 211 of the CPU 21 is "0 (zero) V".
Also, when the stud boss 171C or the stud boss 171D is not electrically connected to the connection node D1 and the stud boss 171A and the stud boss 171B are connected to the connection node D3, the first input terminal 211 of the CPU 21 The first voltage input to is "0 (zero) V".

一方、移設検知装置２０を板金１７から取り外した場合は、即ち、スタッドボス１７１Ａ及びスタッドボス１７１Ｂの何れか一つから移設検知装置２０を取外し、かつスタッドボス１７１Ｃ及びスタッドボス１７１Ｄの何れか一つから移設検知装置２０を取り外した場合、第１入力端子２１１に入力される第１電圧及び第２入力端子２１２に入力される第２電圧が「５Ｖ」になる。 On the other hand, when the relocation detection device 20 is removed from the metal plate 17, that is, the relocation detection device 20 is removed from one of the stud bosses 171A and 171B, and one of the stud bosses 171C and 171D is removed. When the relocation detection device 20 is removed from the device, the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 become "5V".

従って、ＣＰＵ２１は、第１入力端子２１１に入力する第１電圧を監視し、移設検知装置２０を板金１７から取り外したかを検知することができる。第１電圧が閾値（例えば、１Ｖ）より大きい場合、ＣＰＵ２１は、移設検知装置２０を板金１７から取り外したと判定することができる。 Therefore, the CPU 21 can monitor the first voltage input to the first input terminal 211 and detect whether the relocation detection device 20 has been removed from the metal plate 17 . When the first voltage is greater than a threshold value (for example, 1 V), the CPU 21 can determine that the relocation detection device 20 has been removed from the metal plate 17 .

第１電圧が閾値より大きい場合、ＣＰＵ２１は制御装置１０に超過信号を送出する。超過信号を受信した制御装置１０は、警告を表示する指示信号を表示部４ａに出力すると共に、機械本体２の運転を禁止する。 If the first voltage is greater than the threshold, CPU 21 sends an excess signal to controller 10 . Upon receiving the excess signal, the control device 10 outputs an instruction signal for displaying a warning to the display section 4a and prohibits the operation of the machine body 2. FIG.

このように、実施の形態３に係る工作機械１００は、移設検知装置２０を板金１７から取り外した場合、迅速に検知でき、不正な移設検知装置２０の取り外しに素早く対応できる。更に、実施の形態３に係る工作機械１００は、一つの抵抗２８２を用いて通電検知機構２８Ｂを構成しており、部品の点数を減らすことができ、より低コストで移設検知装置２０の不正な取り外しを検知することができる。 As described above, the machine tool 100 according to Embodiment 3 can quickly detect when the relocation detection device 20 is removed from the metal plate 17, and can quickly respond to unauthorized removal of the relocation detection device 20. FIG. Furthermore, the machine tool 100 according to the third embodiment uses one resistor 282 to configure the energization detection mechanism 28B. Removal can be detected.

実施の形態１又は２と同様の部分については、同一の符号を付して詳細な説明を省略する。 Parts similar to those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

以上においては、スタッドボス１７１Ａ－スタッドボス１７１Ｄを用いて移設検知装置２０を板金１７に取り付けた場合を例に説明したが、これに限るものではない。スタッドボス１７１Ａ－スタッドボス１７１Ｄの少なくとも一つを用いて少なくとも１箇所にて移設検知装置２０を板金１７に取り付け、他の個所では銅線又は電線にて移設検知装置２０及び板金１７を電気接続する構成であっても良い。 In the above description, the case where the relocation detection device 20 is attached to the metal plate 17 using the stud bosses 171A to 171D has been described as an example, but the present invention is not limited to this. At least one of the stud bosses 171A to 171D is used to attach the relocation detection device 20 to the metal plate 17 at least one location, and the relocation detection device 20 and the metal plate 17 are electrically connected at other locations with copper wires or electric wires. It may be a configuration.

（実施の形態４）
図７は、実施の形態４に係る工作機械１００の通電検知機構２８Ｃを表す概略的回路図である。 (Embodiment 4)
FIG. 7 is a schematic circuit diagram showing energization detection mechanism 28C of machine tool 100 according to the fourth embodiment.

通電検知機構２８Ｃは、例えば５Ｖの電池からなる電源２８１を有する。これに限るものでなく、移設検知装置２０の電池２７を兼用する構成であっても良い。
電源２８１の一端は、接続ノードＤ２にて２つに分岐している。前記２つのうち、一方には抵抗２８２の一端が電気接続しており、他方には抵抗２８４の一端が電気接続している。電源２８１の他端には導電体２８３が電気接続しており、抵抗２８２及び抵抗２８４は例えば１０－５０ｋΩである。 28 C of electricity detection mechanisms have the power supply 281 which consists of a battery of 5V, for example. The configuration is not limited to this, and the battery 27 of the relocation detection device 20 may also be used.
One end of the power supply 281 is branched into two at the connection node D2. One end of the resistor 282 is electrically connected to one of the two, and one end of the resistor 284 is electrically connected to the other. A conductor 283 is electrically connected to the other end of the power supply 281, and resistors 282 and 284 are, for example, 10-50 kΩ.

抵抗２８２の他端は、接続ノードＤ１にて２つに分岐しており、一方はＣＰＵ２１の第１入力端子２１１に電気接続しており、他方はスタッドボス１７１Ａに電気接続している。ＣＰＵ２１は導電体２８３に電気接続している。これに限るものではなく、ＣＰＵ２１に代えてＧＰＵ、マイクロコンピュータ等であっても良い。 The other end of the resistor 282 is branched into two at the connection node D1, one of which is electrically connected to the first input terminal 211 of the CPU 21, and the other of which is electrically connected to the stud boss 171A. CPU 21 is electrically connected to conductor 283 . The CPU 21 is not limited to this, and a GPU, a microcomputer, or the like may be used in place of the CPU 21 .

スタッドボス１７１Ａはスタッドボス１７１Ｂと板金１７を介して通電しており、スタッドボス１７１Ｂは導電体２８３に電気接続している。 The stud boss 171A is electrically connected to the stud boss 171B through the sheet metal 17, and the stud boss 171B is electrically connected to the conductor 283. As shown in FIG.

抵抗２８４の他端は、接続ノードＤ３にて２つに分岐しており、一方はＣＰＵ２１の第２入力端子２１２に電気接続しており、他方はスタッドボス１７１Ｃに電気接続している。スタッドボス１７１Ｃは、板金１７を介してスタッドボス１７１Ａ及びスタッドボス１７１Ｂと通電している。 The other end of the resistor 284 is branched into two at the connection node D3, one of which is electrically connected to the second input terminal 212 of the CPU 21, and the other of which is electrically connected to the stud boss 171C. The stud boss 171C conducts electricity with the stud boss 171A and the stud boss 171B through the metal plate 17. As shown in FIG.

従って、スタッドボス１７１Ａ及びスタッドボス１７１Ｂが接続ノードＤ１に電気接続している場合、電源２８１からの電流は、接続ノードＤ２、抵抗２８２、接続ノードＤ１、スタッドボス１７１Ａ、板金１７、スタッドボス１７１Ｂ及び導電体２８３の順に流れる。この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「０（零）Ｖ」である。 Therefore, when stud boss 171A and stud boss 171B are electrically connected to connection node D1, the current from power supply 281 flows through connection node D2, resistor 282, connection node D1, stud boss 171A, sheet metal 17, stud boss 171B and It flows in order of the conductor 283 . At this time, the voltage between the resistor 282 and the stud boss 171A, that is, the first voltage input to the first input terminal 211 of the CPU 21 is "0 (zero) V".

また、スタッドボス１７１Ｃ及びスタッドボス１７１Ｂが接続ノードＤ３に電気接続している場合、電源２８１からの電流は、接続ノードＤ２、抵抗２８４、接続ノードＤ３、スタッドボス１７１Ｃ、板金１７、スタッドボス１７１Ｂ及び導電体２８３の順に流れる。この際、抵抗２８４及びスタッドボス１７１Ｃの間の電圧、即ち、ＣＰＵ２１の第２入力端子２１２に入力される第２電圧は「０Ｖ」である。 Further, when the stud bosses 171C and 171B are electrically connected to the connection node D3, the current from the power supply 281 flows through the connection node D2, the resistor 284, the connection node D3, the stud boss 171C, the metal plate 17, the stud boss 171B and the It flows in order of the conductor 283 . At this time, the voltage between the resistor 284 and the stud boss 171C, that is, the second voltage input to the second input terminal 212 of the CPU 21 is "0V".

即ち、移設検知装置２０が板金１７に正しく固定している場合は、第１入力端子２１１に入力される第１電圧及び第２入力端子２１２に入力される第２電圧は共に「０Ｖ」である。 That is, when the relocation detection device 20 is correctly fixed to the metal plate 17, both the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 are "0 V". .

一方、スタッドボス１７１Ａが接続ノードＤ１に電気接続していない場合、電源２８１からの電流は、接続ノードＤ１からスタッドボス１７１Ａ側に流れなくなり、この際、抵抗２８２及びスタッドボス１７１Ａの間の電圧、即ち、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「５Ｖ」になる。 On the other hand, when the stud boss 171A is not electrically connected to the connection node D1, the current from the power supply 281 does not flow from the connection node D1 to the stud boss 171A side. That is, the first voltage input to the first input terminal 211 of the CPU 21 becomes "5V".

スタッドボス１７１Ｃが接続ノードＤ３に接続していない場合、電源２８１からの電流は、接続ノードＤ３からスタッドボス１７１Ｃ側に流れなくなり、この際、抵抗２８４及びスタッドボス１７１Ｃの間の電圧、即ち、ＣＰＵ２１の第２入力端子２１２に入力される第２電圧は「５Ｖ」になる。 When the stud boss 171C is not connected to the connection node D3, the current from the power supply 281 does not flow from the connection node D3 to the stud boss 171C side. The second voltage input to the second input terminal 212 of is "5V".

スタッドボス１７１Ｂから移設検知装置２０を取り外した場合は、電源２８１からの電流は、接続ノードＤ１からスタッドボス１７１Ａ側に流れなくなり、接続ノードＤ３からスタッドボス１７１Ｃ側にも流れなくなる。従って、この際、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「５Ｖ」になり、ＣＰＵ２１の第２入力端子２１２に入力される第２電圧も「５Ｖ」になる。 When the relocation detection device 20 is removed from the stud boss 171B, the current from the power supply 281 stops flowing from the connection node D1 to the stud boss 171A side and from the connection node D3 to the stud boss 171C side. Therefore, at this time, the first voltage input to the first input terminal 211 of the CPU 21 becomes "5V", and the second voltage input to the second input terminal 212 of the CPU 21 also becomes "5V".

即ち、移設検知装置２０をスタッドボス１７１Ａ又はスタッドボス１７１Ｃから取り外した場合、第１入力端子２１１に入力される第１電圧又は第２入力端子２１２に入力される第２電圧が「５Ｖ」になる。
また、移設検知装置２０をスタッドボス１７１Ｂから取り外した場合、及び、スタッドボス１７１Ａ－スタッドボス１７１Ｃの全てから取外した場合、第１入力端子２１１に入力される第１電圧及び第２入力端子２１２に入力される第２電圧が「５Ｖ」になる。 That is, when the relocation detection device 20 is removed from the stud boss 171A or the stud boss 171C, the first voltage input to the first input terminal 211 or the second voltage input to the second input terminal 212 becomes "5V". .
Further, when the relocation detection device 20 is removed from the stud boss 171B and when it is removed from all of the stud bosses 171A to 171C, the first voltage input to the first input terminal 211 and the second input terminal 212 The second voltage to be input becomes "5V".

従って、ＣＰＵ２１は、第１入力端子２１１に入力する第１電圧及び第２入力端子２１２に入力される第２電圧を監視し、移設検知装置２０を板金１７から取り外そうとしているか、移設検知装置２０を板金１７から取り外したかを検知することができる。
第１電圧又は第２電圧の少なくとも一方が閾値より大きい場合、ＣＰＵ２１は、移設検知装置２０を板金１７から取り外したと判定することができる。 Therefore, the CPU 21 monitors the first voltage input to the first input terminal 211 and the second voltage input to the second input terminal 212 to determine whether the relocation detection device 20 is being removed from the metal plate 17 or not. It is possible to detect whether or not 20 has been removed from the sheet metal 17 .
When at least one of the first voltage and the second voltage is greater than the threshold, the CPU 21 can determine that the relocation detection device 20 has been removed from the metal plate 17 .

以上の如く、移設検知装置２０を板金１７から取り外したと判定した場合、ＣＰＵ２１は、制御装置１０に超過信号を送出する。超過信号を受信した制御装置１０は、警告を表示する指示信号を表示部４ａに出力すると共に、機械本体２の運転を禁止する。 As described above, when determining that the relocation detection device 20 has been removed from the metal plate 17, the CPU 21 sends an excess signal to the control device 10. FIG. Upon receiving the excess signal, the control device 10 outputs an instruction signal for displaying a warning to the display section 4a and prohibits the operation of the machine body 2. FIG.

実施の形態１－３と同様の部分については、同一の符号を付して詳細な説明を省略する。 The same reference numerals are assigned to the same parts as in Embodiments 1-3, and detailed description thereof will be omitted.

以上においては、スタッドボス１７１を用いて移設検知装置２０を板金１７に取り付けた場合を例に説明したが、これに限るものではなく、半田付けを用いても良い。
また、以上においては、スタッドボス１７１が伝導性である場合を例に説明したが、これに限るものでない。絶縁性のスタッドボス１７１を用い、別途銅線又は電線にて移設検知装置２０及び板金１７を電気接続しても良い。この場合、移設検知装置２０（ＣＰＵ２１）が前記銅線又は電線の通電を監視すれば良い。
また、以上においては、スタッドボス１７１Ａ－スタッドボス１７１Ｄを用いて移設検知装置２０を板金１７に取り付けた場合を例に説明したが、これに限るものではない。スタッドボス１７１Ａ－スタッドボス１７１Ｄの少なくとも一つを用いて少なくとも１箇所にて移設検知装置２０を板金１７に取り付け、他の個所では銅線又は電線にて移設検知装置２０及び板金１７を電気接続する構成であっても良い。
図６において、板金１７を分割せずに一枚のものを使用し、スタッドボス１７１Ｃを導電体２８３に電気接続してもよい。この場合、移設検知装置２０をスタッドボス１７１Ａから取り外した場、又は移設検知装置２０を少なくともスタッドボス１７１Ｂ、スタッドボス１７１Ｃ、スタッドボス１７１Ｄから取り外した場合、ＣＰＵ２１の第１入力端子２１１に入力される第１電圧は「５Ｖ」になる。 In the above description, the case where the relocation detection device 20 is attached to the metal plate 17 using the stud boss 171 has been described as an example, but it is not limited to this, and soldering may be used.
Also, in the above description, the case where the stud boss 171 is conductive has been described as an example, but the present invention is not limited to this. The insulative stud boss 171 may be used to electrically connect the relocation detection device 20 and the metal plate 17 with a separate copper wire or electric wire. In this case, the relocation detection device 20 (CPU 21) may monitor the energization of the copper wire or electric wire.
In the above description, the case where the relocation detection device 20 is attached to the metal plate 17 using the stud bosses 171A to 171D has been described as an example, but the present invention is not limited to this. At least one of the stud bosses 171A to 171D is used to attach the relocation detection device 20 to the metal plate 17 at least one location, and the relocation detection device 20 and the metal plate 17 are electrically connected at other locations with copper wires or electric wires. It may be a configuration.
In FIG. 6, a single piece of metal plate 17 may be used instead of being divided, and the stud boss 171C may be electrically connected to the conductor 283. FIG. In this case, when the relocation detection device 20 is removed from the stud boss 171A, or when the relocation detection device 20 is removed from at least the stud bosses 171B, 171C, and 171D, the input to the first input terminal 211 of the CPU 21 The first voltage becomes "5V".

１７ 板金
２０ 移設検知装置
２１ ＣＰＵ
２８ 通電検知機構
１００ 工作機械
１７１ スタッドボス
２８２ 抵抗
２８４ 抵抗 17 sheet metal 20 relocation detection device 21 CPU
28 energization detection mechanism 100 machine tool 171 stud boss 282 resistance 284 resistance

Claims (12)

自機の移設を検知する移設検知部を備える工作機械において、
前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知する通電検知機構と、
前記通電検知機構の検知結果に基づいて、前記移設検知部を取外したか否かを判定する判定部とを備え、
前記通電検知機構は、
電源に一端が接続し、他端が前記判定部に電気接続する第１抵抗と、
前記第１抵抗の他端及び前記被取付部を電気接続する第１接続部と、
前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部とを備えており、
前記判定部は、前記第１抵抗及び前記第１接続部の間の第１電圧に基づいて、前記移設検知部を取外したか否かを判定し、
前記第１接続部及び前記第２接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする工作機械。 In a machine tool equipped with a relocation detection unit that detects relocation of its own machine,
an energization detection mechanism for detecting whether or not the mounted part to which the relocation detection part is attached and the relocation detection part are energized;
a determination unit that determines whether or not the relocation detection unit has been removed based on the detection result of the energization detection mechanism ;
The energization detection mechanism is
a first resistor, one end of which is connected to a power supply and the other end of which is electrically connected to the determination unit;
a first connecting portion electrically connecting the other end of the first resistor and the attached portion;
a second connection part that is energized with the first connection part and connected to the power supply via a fixed potential,
The determination unit determines whether or not the relocation detection unit has been removed based on a first voltage between the first resistor and the first connection unit,
A machine tool , wherein at least one of the first connecting portion and the second connecting portion is a fixing member for fixing the relocation detecting portion to the attached portion . 自機の移設を検知する移設検知部を備える工作機械において、
前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知する通電検知機構と、
前記通電検知機構の検知結果に基づいて、前記移設検知部を取外したか否かを判定する判定部とを備え、
前記通電検知機構は、
電源に一端が接続し、他端が前記判定部に電気接続する第１抵抗と、
前記第１抵抗の他端及び前記被取付部を電気接続する第１接続部と、
前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部と、
前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、
前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部と、
前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備えており、
前記判定部は、前記第１抵抗及び前記第１接続部の間の第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定し、
前記第３接続部及び前記第４接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする工作機械。 In a machine tool equipped with a relocation detection unit that detects relocation of its own machine,
an energization detection mechanism for detecting whether or not the mounted part to which the relocation detection part is attached and the relocation detection part are energized;
a determination unit that determines whether or not the relocation detection unit has been removed based on the detection result of the energization detection mechanism;
The energization detection mechanism is
a first resistor, one end of which is connected to a power supply and the other end of which is electrically connected to the determination unit;
a first connecting portion electrically connecting the other end of the first resistor and the attached portion;
a second connection portion electrically connected to the first connection portion and connected to the power source via a fixed potential;
a second resistor having one end connected to the power supply and the other end connected to the determination unit;
a third connecting portion electrically connecting the other end of the second resistor and the attached portion;
a fourth connection part that is energized with the third connection part and connected to the power supply via a fixed potential,
The determination unit determines whether the relocation detection unit has been removed based on a first voltage between the first resistor and the first connection unit and a second voltage between the second resistor and the third connection unit. determine whether or not
A machine tool , wherein at least one of the third connection portion and the fourth connection portion is a fixing member for fixing the relocation detection portion to the attached portion . 自機の移設を検知する移設検知部を備える工作機械において、
前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知する通電検知機構と、
前記通電検知機構の検知結果に基づいて、前記移設検知部を取外したか否かを判定する判定部とを備え、
前記通電検知機構は、
電源に一端が接続し、他端が前記判定部に電気接続する第１抵抗と、
前記第１抵抗の他端及び前記被取付部を電気接続する第１接続部と、
前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部と、
前記第１抵抗の前記他端及び前記被取付部を電気接続する第３接続部と、
前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備えており、
前記判定部は、前記第１抵抗の前記他端の電圧に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする工作機械。 In a machine tool equipped with a relocation detection unit that detects relocation of its own machine,
an energization detection mechanism for detecting whether or not the mounted part to which the relocation detection part is attached and the relocation detection part are energized;
a determination unit that determines whether or not the relocation detection unit has been removed based on the detection result of the energization detection mechanism;
The energization detection mechanism is
a first resistor, one end of which is connected to a power supply and the other end of which is electrically connected to the determination unit;
a first connecting portion electrically connecting the other end of the first resistor and the attached portion;
a second connection portion electrically connected to the first connection portion and connected to the power source via a fixed potential;
a third connecting portion that electrically connects the other end of the first resistor and the attached portion;
a fourth connection part that is energized with the third connection part and connected to the power supply via a fixed potential,
The machine tool , wherein the determination unit determines whether or not the relocation detection unit has been removed based on the voltage at the other end of the first resistor . 前記通電検知機構は、
前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、
前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部とを備えており、
前記第３接続部は前記第１接続部又は前記第２接続部と通電し、
前記判定部は、前記第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定することを特徴とする請求項１に記載の工作機械。 The energization detection mechanism is
a second resistor having one end connected to the power supply and the other end connected to the determination unit;
a third connecting portion electrically connecting the other end of the second resistor and the attached portion;
the third connection portion conducts electricity with the first connection portion or the second connection portion;
3. The determination unit determines whether or not the relocation detection unit has been removed based on the first voltage and a second voltage between the second resistor and the third connection unit. 1. The machine tool according to 1. 前記通電検知機構は、
前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、
前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部と、
前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備えており、
前記判定部は、前記第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定することを特徴とする請求項１に記載の工作機械。 The energization detection mechanism is
a second resistor having one end connected to the power supply and the other end connected to the determination unit;
a third connecting portion electrically connecting the other end of the second resistor and the attached portion;
a fourth connection part that is energized with the third connection part and connected to the power supply via a fixed potential,
3. The determination unit determines whether or not the relocation detection unit has been removed based on the first voltage and a second voltage between the second resistor and the third connection unit. 1. The machine tool according to 1. 前記判定部は、前記第１電圧及び前記第２電圧の少なくとも一方が閾値以上である場合、前記移設検知部を取外したと判定することを特徴とする請求項２、４又は５に記載の工作機械。 6. The machine tool according to claim 2, 4 or 5 , wherein the determination unit determines that the relocation detection unit is removed when at least one of the first voltage and the second voltage is equal to or higher than a threshold value. . 前記判定部は、前記第１電圧及び前記第２電圧の両方が閾値以上である場合、前記移設検知部を取外したと判定することを特徴とする請求項２、４又は５に記載の工作機械。 6. The machine tool according to claim 2 , wherein the determination unit determines that the relocation detection unit has been removed when both the first voltage and the second voltage are equal to or greater than a threshold value. 前記第１接続部、前記第２接続部、前記第３接続部及び前記第４接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする請求項３に記載の工作機械。 At least one of the first connection portion, the second connection portion, the third connection portion, and the fourth connection portion is a fixing member for fixing the relocation detection portion to the attached portion. 4. The machine tool according to item 3 . 自機の移設を検知する移設検知部を備える工作機械にて、前記移設検知部の取外しを判定する判定方法おいて、
電源に一端が接続し、他端が前記移設検知部を取外したか否かを判定する判定部に電気接続する第１抵抗と、前記第１抵抗の他端及び前記移設検知部を取り付ける被取付部を電気接続する第１接続部と、前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部とを備え、前記被取付部及び前記移設検知部が通電しているかを検知する通電検知機構を用い、
前記判定部は、前記第１抵抗及び前記第１接続部の間の第１電圧に基づいて、前記移設検知部を取外したか否かを判定し、
前記第１接続部及び前記第２接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする判定方法。 In a machine tool equipped with a relocation detection unit that detects relocation of the own machine, in a determination method for determining removal of the relocation detection unit,
a first resistor, one end of which is connected to a power source and the other end of which is electrically connected to a determination unit that determines whether or not the relocation detection unit has been removed; and a second connection portion electrically connected to the first connection portion and connected to the power supply via a fixed potential, wherein the attached portion and the relocation detection portion are energized Using an energization detection mechanism that detects whether
The determination unit determines whether or not the relocation detection unit has been removed based on a first voltage between the first resistor and the first connection unit,
At least one of the first connecting portion and the second connecting portion is a fixing member for fixing the relocation detecting portion to the attached portion . 自機の移設を検知する移設検知部を備える工作機械にて、前記移設検知部の取外しを判定する判定方法おいて、In a machine tool equipped with a relocation detection unit that detects relocation of the own machine, in a determination method for determining removal of the relocation detection unit,
電源に一端が接続し、他端が前記移設検知部を取外したか否かを判定する判定部に電気接続する第１抵抗と、前記第１抵抗の他端及び前記移設検知部を取り付ける被取付部を電気接続する第１接続部と、前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部と、前記電源に一端が接続し、他端が前記判定部に接続する第２抵抗と、前記第２抵抗の他端及び前記被取付部を電気接続する第３接続部と、前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備え、前記被取付部及び前記移設検知部が通電しているかを検知する通電検知機構を用い、a first resistor, one end of which is connected to a power source and the other end of which is electrically connected to a determination unit that determines whether or not the relocation detection unit has been removed; a second connection portion electrically connected to the first connection portion and connected to the power source via a fixed potential; one end connected to the power source and the other end connected to the determination portion a second resistor to be connected, a third connection portion for electrically connecting the other end of the second resistor and the attached portion, and a fourth connection portion that is energized with the third connection portion and connected to the power supply via a fixed potential. and a connecting portion, using an energization detection mechanism that detects whether the attached portion and the relocation detection portion are energized,
前記判定部は、前記第１抵抗及び前記第１接続部の間の第１電圧と前記第２抵抗及び前記第３接続部の間の第２電圧とに基づいて、前記移設検知部を取外したか否かを判定し、The determination unit determines whether the relocation detection unit has been removed based on a first voltage between the first resistor and the first connection unit and a second voltage between the second resistor and the third connection unit. determine whether or not
前記第３接続部及び前記第４接続部の少なくとも一つは前記移設検知部を前記被取付部に固定する固定部材であることを特徴とする判定方法。At least one of the third connection portion and the fourth connection portion is a fixing member for fixing the relocation detection portion to the attached portion. 自機の移設を検知する移設検知部を備える工作機械にて、前記移設検知部の取外しを判定する判定方法おいて、In a machine tool equipped with a relocation detection unit that detects relocation of the own machine, in a determination method for determining removal of the relocation detection unit,
電源に一端が接続し、他端が前記移設検知部を取外したか否かを判定する判定部に電気接続する第１抵抗と、前記第１抵抗の他端及び前記移設検知部を取り付ける被取付部を電気接続する第１接続部と、前記第１接続部と通電し、固定電位を介して前記電源に接続する第２接続部と、前記第１抵抗の前記他端及び前記被取付部を電気接続する第３接続部と、前記第３接続部と通電し、固定電位を介して前記電源に接続する第４接続部とを備え、前記被取付部及び前記移設検知部が通電しているかを検知する通電検知機構を用い、a first resistor, one end of which is connected to a power source and the other end of which is electrically connected to a determination unit that determines whether or not the relocation detection unit has been removed; a second connection portion electrically connected to the first connection portion and connected to the power supply via a fixed potential; and the other end of the first resistor and the attached portion electrically connected to each other a third connecting portion for connection; and a fourth connecting portion that is electrically connected to the third connecting portion and connected to the power supply via a fixed potential, and detects whether the attached portion and the relocation detection portion are energized. Using an energization detection mechanism that detects
前記判定部は、前記第１抵抗の前記他端の電圧に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする判定方法。The determination method, wherein the determination unit determines whether or not the relocation detection unit is removed based on the voltage of the other end of the first resistor. 自機の移設を検知する移設検知部を備える工作機械において、In a machine tool equipped with a relocation detection unit that detects relocation of its own machine,
前記移設検知部を取り付ける被取付部及び前記移設検知部が通電しているかを検知する通電検知機構と、an energization detection mechanism for detecting whether or not the mounted part to which the relocation detection part is attached and the relocation detection part are energized;
前記通電検知機構の検知結果に基づいて、前記移設検知部を取外したか否かを判定する判定部とを備え、a determination unit that determines whether or not the relocation detection unit has been removed based on the detection result of the energization detection mechanism;
前記通電検知機構は、The energization detection mechanism is
前記移設検知部を前記被取付部に固定し、且つ、電源及び前記被取付部を電気接続する固定部材を備えており、a fixing member that fixes the relocation detection unit to the attached portion and electrically connects the power supply and the attached portion;
前記判定部は、The determination unit
前記固定部材を取り外した際の電圧の変化に基づいて、前記移設検知部を取外したか否かを判定することを特徴とする工作機械。A machine tool characterized by determining whether or not the relocation detection unit has been removed based on a change in voltage when the fixing member is removed.
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