金属模上突出塔子部分,一般采用燕尾槽定位。我厂老师傅在制造直径大于200毫米的圆柱形搭子的金属模时,用几根弹簧做成上拉下按可伸缩的活动塔子,使机加工和造型都很方便。图示的金属模是汽轮机上的铸铁件,有突出的搭子,当件1向上拉启时,搭子就向里缩进,向下按时搭子就向外突出。 Outstanding tower part of the mold, the general use of dovetail positioning. I plant the master in the manufacture of cylindrical diameter larger than 200 mm take the child of the mold, with a few springs made up by the retractable movable tower, making the machining and modeling are very convenient. The mold shown in the figure is a cast iron piece on a steam turbine, with a prominent catch. When the piece 1 is pulled upwards, the take-in part is retracted inwards, and when it is pressed downward, the child is protruded outwards.