我厂产品摇臂钻的立柱,其材料采用铸铁。由于工件长而重,车外圆时需用顶尖顶着两端内孔加工。铸件毛坏的内孔一般都不规则,因此,车外圆后立柱壁厚不均匀,使工件难以达到加工要求。为此,我们设计了可调顶尖。由两个固定顶牙和一个可调顶牙组成,既可起到拨动工件转动的作用,又可随着不规则内孔的变化任意调整可调顶牙,从而在车外圆时不再受到内孔不规则形状的影响。 I plant products rocker drill column, the material used cast iron. Due to the length and weight of the workpiece, the outside of the car needs to be pressed against the inside of the hole. The inner hole of the cast hair is generally irregular, so the wall thickness of the stud after the outer circle of the car is not uniform so that the workpieces can hardly meet the processing requirements. To this end, we designed the adjustable tip. Which is composed of two fixed top teeth and one adjustable top teeth, which can not only rotate the workpiece but also adjust the adjustable top teeth as the irregular inner hole changes, so that when the outer cylindrical wheel no longer By the irregular shape of the inner hole.