在銑床上加工方块、矩形块等工件时,一般可用普通虎鉗来夹持;但遇到外形比較复杂的工件,如圓柱、斜体、多棱体等的工件时,就不能用普通虎鉗来夹持,而往往需要使用专用的銑床夹具。可是,制造一套专用夹具的成本很高,所以在一般情况下是不适于采用的。为了便于在普通虎鉗上夹持外形特殊的工件,可以配制一套特种鉗口片。 In the milling machine processing blocks, rectangular blocks and other workpieces, generally available ordinary vise to grip; but when the shape of the more complex parts, such as cylindrical, italic, polygonal, and other parts, you can not use ordinary vise to Clamping, and often require the use of special milling fixture. However, the cost of manufacturing a set of special fixtures is high, so it is not suitable for general use. In order to facilitate the common vise grip on the special shape of the workpiece, you can prepare a set of special jaws.