目前国内所用的活动钳子,按调整方法,大致有两种结构,一种是转动螺母来移动丝杆,调节钳嘴大小,这种结构用得较多,强度较高,但调整不方便。另一种是移动钳子的轴,调节钳嘴大小,虽调整方便,但强度低。下面介绍一种新型钳子,调整方便,强度高,而且夹持零件牢固。 Currently used activities pliers, according to the adjustment method, there are roughly two structures, one is to turn the nut to move the screw, adjust the size of the pliers mouth, this structure with more, higher intensity, but the adjustment is not convenient. The other is moving the axis of the pliers, adjust the size of the pliers mouth, although easy to adjust, but the intensity is low. The following describes a new type of pliers, easy adjustment, high strength, and the clamping parts firm.