MOTOR CONTROL DEVICE

• Main Author: ANDO TORU
• Format: Patent
• Language: English; Japanese
• Published: 27.12.2021
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ELECTRICITY; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERATION; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TRANSPORTING

To provide a motor control device capable of reducing a load on a spindle motor without changing a rotation command of a spindle according to the present invention.SOLUTION: A motor control device is comprised of: a spindle drive unit 1 for driving a spindle motor 15; a feed shaft drive unit 2 for driving a feed shaft motor 16; and a command generation unit 31 that outputs command signals 41 and 42 to the spindle drive unit 1 and the feed shaft drive unit 2. While the spindle drive unit 1 and the feed shaft drive unit 2 comprise: control units 5 and 6; and overload detection units 11 and 12 for determining whether or not a corresponding axis is in an overload state based on control parameters 61 and 62 of the corresponding axis, respectively, when the spindle motor 15 is in an overloaded state or a torque of the spindle motor 15 exceeds a rated torque for a short time, the command generation unit 31 changes a feed rate command value of the feed shaft motor 16 based on the control parameter 61 of the spindle motor 15.SELECTED DRAWING: Figure 1 【課題】本発明は、主軸の回転指令を変更することなく、主軸モータの負荷を軽減できるモータ制御装置を提供する。【解決手段】モータ制御装置は、主軸モータ１５を駆動させる主軸駆動部１と、送り軸モータ１６を駆動させる送り軸駆動部２と、前記主軸駆動部１および前記送り軸駆動部２に対して指令信号４１，４２を出力する指令発生部３１と、を備える。前記主軸駆動部１および前記送り軸駆動部２は、それぞれ、制御部５，６と、対応する軸の制御パラメータ６１，６２に基づいて前記対応する軸が過負荷状態か否かを判断する過負荷検出部１１，１２と、を有し、前記指令発生部３１は、前記主軸モータ１５が過負荷状態、または、前記主軸モータ１５のトルクが短時間定格トルクを超過した場合には、前記主軸モータ１５の制御パラメータ６１に基づいて、前記送り軸モータ１６の送り速度指令値を変更する。【選択図】図１