宝鸡精密机床维修厂采用模板手工造型生产各种箱体、拖板、尾架等车床铸件。造型时模板与砂箱的定位,曾用过外箱耳导销式和内箱锥定位销式两种常用定位方法,但两者均有不足。为此,他们采用一种取前两者之长的定位方法(见图)。 Baoji precision machine repair plant using manual template modeling production of various boxes, carriage, tailstock and other lathe castings. Molding template and the positioning of the sand box, the box has been used to guide the outer box pin and the inner box pin positioning pin two common positioning methods, but both are inadequate. To this end, they use a long way to get the positioning method (see photo).