公开(公告)号：US06708541B1

公开(公告)日：2004-03-23

申请号：US09744957

申请日：2001-02-08

申请人： Masateru Matsumoto ,  Kazuyuki Uchida ,  Kenichi Tsuchiura ,  Takayuki Aoki

发明人： Masateru Matsumoto ,  Kazuyuki Uchida ,  Kenichi Tsuchiura ,  Takayuki Aoki

IPC分类号： B21D714

CPC分类号： G01B11/26 ,  B21D5/006 ,  B21D5/02 ,  G05B2219/37574 ,  G05B2219/45143 ,  Y10S72/702

摘要： An angle detecting head provided with an emitter and a pair of receivers is rocked, and a bent surface of a workpiece bent by a punch and a die of a bending machine is irradiated with a measurement light from the emitter, a reflected light is received by the pair of receivers, and a bending angle of the workpiece is obtained from a peak value of the light received by the respective receivers. The angle detecting head is movable parallel to the die, is movable in a direction close to and away from the workpiece, and is movable in a direction in which the die is raised/lowered. The angle detecting head is positioned in an optimum angle measurement position of the workpiece and the bending angle is measured. Moreover, the bending machine presses the workpiece to the vicinity of a target angle, measures the bending angle of the workpiece during final pressing, removes pressure to bring the workpiece to an unloaded state, measures the bending angle of the workpiece, and obtains and stores a difference between the final pressing angle measured value and the unloaded angle measured value as a spring-back amount.

摘要翻译： 设置有发射器和一对接收器的角度检测头被摇动，用来自发射器的测量光照射由冲头和弯曲机的模具弯曲的工件的弯曲表面，反射光被 一对接收器和工件的弯曲角度由各个接收器接收的光的峰值获得。 角度检测头可平行于模具移动，可在靠近和远离工件的方向上移动，并且可在模具升高/降低的方向上移动。 角度检测头位于工件的最佳角度测量位置，并测量弯曲角度。 此外，弯曲机将工件压在目标角附近，测量最终加压时工件的弯曲角度，去除压力以使工件处于无负载状态，测量工件的弯曲角度，并获得并存储 最终按压角度测量值与无负载角度测量值之间的差作为回弹量。