CONTROL DEVICE FOR PROCESSING MACHINE FOR PROCESSING WORK-PIECE ON DIE CUSHION

• Main Authors: TSUJIKAWA KEISUKE, SHINODA SHOGO, IGAI SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 06.05.2021
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; PRESSES; PRESSES IN GENERAL; PUNCHING METAL; REGULATING; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

To realize a control device which can avoid deterioration in processing quality of a processing machine which applies pressure by a slide to process a work-piece on a die cushion.SOLUTION: A control device 1 for a processing machine 100, which applies pressure by a slide 4 according to a processing program in which a plurality of operation patterns are regulated to process a work-piece on a die cushion 2, comprises: a slide position control part 11 which positionally controls the slide 4 according to the operation pattern; a pressure command generating part 12 which generates a pressure command of the die cushion 2 according to the operation pattern; a pressure detection part 13 which detects an actual pressure of the die cushion 2; a die cushion speed control part 14 which controls a speed of the die cushion 2 on the basis of a deviation between the pressure command and the actual pressure; and a command arrival determination part 15 which determines whether the deviation is larger than a pressure threshold or not. The slide position control part 11 provides a standby period during which the slide position is maintained between the operation pattern at the time point of determination and the next operation pattern on the basis of the determination result of the command arrival determination part 15.SELECTED DRAWING: Figure 1 【課題】スライドにより圧力をかけてダイクッション上の被加工物を加工する加工機械の加工品質の低下を回避できる制御装置を実現する。【解決手段】複数の動作パターンが規定された加工プログラムに従いスライド４により圧力をかけてダイクッション２上の被加工物を加工する加工機械１００の制御装置１は、動作パターンに応じてスライド４を位置制御するスライド位置制御部１１と、動作パターンに応じてダイクッション２の圧力指令を生成する圧力指令生成部１２と、ダイクッション２の実圧力を検出する圧力検出部１３と、圧力指令と実圧力との偏差に基づきダイクッション２を速度制御するダイクッション速度制御部１４と、偏差が圧力閾値より大きいか否かを判定する指令到達判定部１５とを備え、スライド位置制御部１１は、指令到達判定部１５の判定結果に基づき判定時点の動作パターンと次の動作パターンとの間にスライド位置を維持する待機期間を設ける。【選択図】図１