JP5489628B2 - Power supply and cutting control method for all drive motors in NC machine tools - Google Patents
Power supply and cutting control method for all drive motors in NC machine tools Download PDFInfo
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- JP5489628B2 JP5489628B2 JP2009231077A JP2009231077A JP5489628B2 JP 5489628 B2 JP5489628 B2 JP 5489628B2 JP 2009231077 A JP2009231077 A JP 2009231077A JP 2009231077 A JP2009231077 A JP 2009231077A JP 5489628 B2 JP5489628 B2 JP 5489628B2
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- 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
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Description
本発明は、回転主軸及び当該回転主軸に対する工具並びに工作物の供給に関与している搬送車等を備えているＮＣ工作機械における全駆動モーターに対する電源電力の供給及びその切断の制御に関するものである。 The present invention relates to supply of power to all drive motors and control of cutting thereof in an NC machine tool including a rotation spindle, a tool for the rotation spindle, a conveyance vehicle involved in the supply of a workpiece, and the like. .
ＮＣ工作機械においては、作動段階では、全駆動モーターに対し専ら電源からの電力を供給し、全作動行程が終了した段階では当該供給を切断することに関与しているスイッチを設ける一方、非常時が生じた段階では、全駆動モーターによって回転している重力軸におけるブレーキを作動させるために必要なスィッチ、及び電源からの電力の供給を切断するスイッチをも備えているが、後者のスイッチは非常時以外の場合には電源からの電力の供給にも関与している。 In the NC machine tool, in the operation stage, the power from the power source is exclusively supplied to all the drive motors, and at the stage when the entire operation process is completed, a switch related to cutting off the supply is provided. At the stage where the problem occurred, it also has switches necessary to operate the brake on the gravity axis rotating by all drive motors, and a switch that cuts off the power supply from the power source. In other cases, it is involved in the supply of power from the power source.
その結果、電源からの電力の供給及びその切断については、２個のスイッチが関与し得ることに帰する。 As a result, two switches can be involved in supplying and disconnecting power from the power source.
電源からの電力の供給及び切断にはリレー方式による無接点方式及び電磁的な接触を伴う接点方式の何れかが採用されているが、双方のスィッチは、共に一定のコストを必要としており、上記のような２個のスイッチの併存は明らかにコストアップであると共に無駄な設備の設定に他ならない。 Either a contactless system using a relay system or a contact system with electromagnetic contact is used for supplying and cutting off power from the power supply, but both switches require a certain cost, and the above The coexistence of two switches like this is obviously a cost increase and is nothing but a wasteful equipment setting.
然るに、ＮＣ工作機械においてこのような無駄に着目し、経済効率を考慮した電力の供給及び切断を改善しようとする発想はこれまで提唱されていない。 However, no idea has been proposed so far to focus on such waste in NC machine tools and to improve power supply and disconnection in consideration of economic efficiency.
現に、特許文献１は、非常ブレーキの作動という上記の背景技術に関連する事項を開示しているが、前記のような問題点については全く言及していない。 Actually, Patent Document 1 discloses a matter related to the above-described background art of operation of an emergency brake, but does not mention the above-mentioned problem at all.
本発明は、ＮＣ工作機械制御において、非常時用に電力の供給を切断し得るスイッチの存在に着目し、当該スイッチを有効に活用することを課題としている。 In the NC machine tool control, the present invention pays attention to the existence of a switch that can cut off the supply of electric power for an emergency, and an object thereof is to effectively use the switch.
前記課題を解決するため、本発明の基本構成は、
（１）ＮＣ工作機械において、工作及び搬送に関与している全駆動モーターに対し、専ら電力の供給及び切断を行うスイッチを設けずに、全駆動モーターに対し非常時に際し電源からの電力の供給を切断し、非常時以外の段階では電源からの電力を供給している非常時用スイッチ及び各駆動モーターによって回転している重力軸に対するブレーキを作動させるために必要なブレーキ作動用スイッチに対し、中央コントローラーがＮＣ工作機械の全作動行程が終了した段階において、全駆動モーターに対する電力供給の切断指令を伝達すると共に、前記ブレーキ作動用スイッチに対する作動指令を伝達することによる電力の供給及び切断制御方法、
（２）ＮＣ工作機械において、工作及び搬送に関与している全駆動モーターに対し、専ら電力の供給及び切断を行うスイッチを設けずに、全駆動モーターに対し非常時に際し電源からの電力の供給を切断し、非常時以外の段階では電源からの電力を供給している非常時用スイッチ及び各駆動モーターによって回転している重力軸に対するブレーキを作動させるために必要なブレーキ作動用スイッチに対し、中央コントローラーがＮＣ工作機械の全作動行程が終了した段階において、全駆動モーターに対する電力供給の切断指令を伝達する一方、前記ブレーキ作動用スイッチに対する作動指令を伝達しないことによる電力の供給及び切断制御方法、
からなる。
In order to solve the above problems, the basic configuration of the present invention is as follows.
(1) In an NC machine tool, power is supplied from a power supply in the event of an emergency to all drive motors without providing a switch for supplying and disconnecting power exclusively to all drive motors involved in machining and conveyance. For the emergency switch that supplies power from the power source at a stage other than emergency and the brake operation switch that is necessary to operate the brake against the gravity axis that is rotating by each drive motor , In the stage where the central controller completes the entire operation process of the NC machine tool, a power supply disconnection command is transmitted by transmitting an operation command for power supply to all drive motors and an operation command for the brake operation switch. ,
(2) In NC machine tools, power is supplied from the power supply in the event of an emergency to all drive motors without providing a switch for supplying and disconnecting power exclusively to all drive motors involved in machining and conveyance. For the emergency switch that supplies power from the power source at a stage other than emergency and the brake operation switch that is necessary to operate the brake against the gravity axis that is rotating by each drive motor, Power supply and disconnection control method by not transmitting the operation command for the brake operation switch while the central controller transmits the command for disconnecting the power supply to all the drive motors at the stage when the entire operation process of the NC machine tool is completed ,
Consists of.
前記基本構成（１）、（２）によって、非常時用に電力の供給を切断し得るスイッチをＮＣ工作機械の全加工行程が終了した段階においても、作動させることによって、全駆動モーターの回転駆動を終了させることができ、従来技術の場合のように、専ら電源からの電力を供給し、ＮＣ工作機械の全作動行程が終了した段階では当該供給を切断するようなスィッチを不要とし得るので、ＮＣ工作機械のコスト削減に寄与することが可能となる。 Rotation drive of all drive motors by operating the switch that can cut off the power supply for emergency in the basic configuration (1) and (2) even at the stage when the entire machining process of the NC machine tool is completed. As in the case of the prior art, it is possible to eliminate the need for a switch that exclusively supplies power from the power source and cuts off the supply when the entire operation process of the NC machine tool is completed. It becomes possible to contribute to the cost reduction of NC machine tools.
前記基本構成（１）においては、ＮＣ工作機械における中央コントローラーが、非常時停止用スイッチによって電源からの電力を供給する指令を発信し、当該工作に関する全作動全行程が終了した段階の場合にも、当該非常時停止用スイッチに対し、電力の供給を切断するのに必要な信号を伝達し、その結果ＮＣ工作機械における全駆動モーターに対する電力の停止は切断されることになる。 In the basic configuration (1) , even when the central controller in the NC machine tool issues a command to supply power from the power source using the emergency stop switch, and the entire operation process related to the machine has been completed. A signal necessary to cut off the power supply is transmitted to the emergency stop switch, and as a result, the power stop for all the drive motors in the NC machine tool is cut off.
前記中央コントローラーによる制御の状況は、図１のフローチャートに示すとおりであって、中央コントローラーは単に非常時の発生段階だけでなく、工作に関する全作動行程が終了した段階においても、非常時用のスイッチに対し電力の供給を切断するために必要な信号を伝達することになる。 The state of control by the central controller is as shown in the flow chart of FIG. 1, and the central controller is not only an emergency generation stage, but also an emergency switch at the stage where all operation processes related to the work are completed. Therefore, a signal necessary for cutting off the supply of power is transmitted.
このように、非常時に際し、電力の供給を切断するスイッチを全加工行程が終了した段階においても兼用させることによって本発明は前記のようなコスト削減の効果を得ることが出来る。 Thus, in the event of an emergency, the present invention can obtain the above-described cost reduction effect by using the switch for cutting off the power supply even at the stage where the entire machining process is completed.
但し、通常、非常時には、単に電力の供給を切断し得るスイッチだけでなく、各駆動モーターによって回転している重力軸のブレーキを作動させるようなスイッチの作動が行われている。 However, in an emergency, not only a switch that can cut off the supply of electric power but also a switch that operates a brake of the gravity shaft that is rotating by each drive motor is performed.
図１に示すフローチャートでは、ＮＣ工作機械の全工程が終了した段階の場合にも、前記ブレーキ作動のスイッチに対する指令が伝達されているが、前記ブレーキが作動しても、通常既に各駆動モーターの回転が終了している以上、格別の弊害が生ずる訳ではない。 In the flowchart shown in FIG. 1, even when the entire process of the NC machine tool is completed, the command for the brake operation switch is transmitted. As long as the rotation is complete, no particular adverse effects will occur.
基本構成（２）においては、図２のフローチャートに示すように、非常時に際し、各駆動モーターによって回転している重力軸に対するブレーキを作動させるに必要なブレーキ作動用スイッチと、全駆動モーターに対し、電源からの電力の供給を切断するスイッチの内、ＮＣ工作機械の全作動工程が終了した段階では、中央コントローラーが後者のスイッチのみを作動させることを特徴としている。 In the basic configuration (2) , as shown in the flow chart of FIG. 2, in the event of an emergency, the brake operation switch necessary for operating the brake for the gravity axis rotating by each drive motor and all the drive motors Of the switches for cutting off the supply of power from the power source, the central controller operates only the latter switch at the stage where all the operation processes of the NC machine tool are completed.
このような特徴によって、ＮＣ工作機械の全行程が終了した段階では、専ら電力の供給を切断するスイッチのみが作動し、前記ブレーキの作動という無意味行程を省略することができる。 With such a feature, at the stage where the entire process of the NC machine tool is completed, only the switch for cutting off the supply of electric power operates exclusively, and the meaningless process of operating the brake can be omitted.
無論、非常時が発生した場合には、ＮＣコントローラーは双方のスイッチに作動指令を伝達し、かつ駆動させている。 Of course, when an emergency occurs, the NC controller transmits an operation command to both switches and drives them.
本発明は、ＮＣ工作機械の全分野において活用することができる。 The present invention can be utilized in all fields of NC machine tools.
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