机用平口钳夹持工件有力，操作方便。但它对所夹持的工件形面有要求：工件必须有一对相互平行的平面。对不能满足这一条件的工件，就无法直接由机用平口钳夹持加工。为此，我对其钳口进行了改进设计。经过改进设计后的平口钳钳口能夹持相对平面夹角＜30的工件，并能夹持圆... Machine pliers hold the workpiece powerful, easy to operate. However, it has requirements on the shape of the workpiece to be clamped: the workpiece must have a pair of planes that are parallel to each other. Can not meet the conditions of the workpiece, it can not be directly machined by the machine with flat nose pliers. To this end, I improved the design of its jaws. After the improvement of the design of the mouth clamp can clamp the relative plane angle <30 of the workpiece, and can hold the circle ...