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为了满足在平口钳上装夹不同垫高要求的工件,常需备有各种厚度的平行垫铁。如果制作一个如图所示的可调高垫铁,不仅节约材料,存放省事,而且可以在一定范围内很方便地获得任意垫高厚度。可调高垫铁由一个平行四连杆机构组成,因此无论何时,上长连杆和下长连杆始终保持平行。使用时,先松开下长连杆上的蝶形螺母,将上、下长连杆间的距离调到所需尺寸,再拧紧碟形螺
In order to meet the clamping requirements of the workpiece on different pliers, often need to have a variety of parallel thickness horn. If you make a height adjustable horns as shown, not only save material, save trouble, but also within a certain range can easily get any pad thickness. The height-adjustable horn consists of a parallel four-bar linkage, so the upper long link and the lower long link are always parallel at all times. When using, firstly loosen the butterfly nut on the long connecting rod, adjust the distance between the upper and lower long connecting rods to the required size, and then tighten the dish screw