The invention discloses a
machining process of a mold core. The
machining process of the mold core comprises the following steps of material preparation, specifically, a blank made of an SKD61 material is prepared; rough
machining, specifically, six faces are machined roughly through a milling
machine, allowances are reserved, and a screw hole and a water way are machined; M / C rough machining, specifically, a molding
station is roughly formed and an allowance is reserved;
thermal treatment, specifically, the material is subjected to
thermal treatment to achieve the optimal
hardness;
grinding, specifically, the six faces are ground until the shape is molded; wire-
electrode cutting, specifically, a middle through frame is subjected to wire-
electrode cutting; fine machining, specifically, M / C fine machining is conducted;
electric discharge machining, specifically,
electric discharge machining is conducted and 0.03-0.035 mm is reserved at the glue position;
polishing, specifically, mirror
polishing is conducted on the glue position; and texturing, specifically, texturing is conducted in the position with the special requirement of the glue face. The
machining process is reasonable, few workpieces are damaged, the mechanical machining precision is high, the production efficiency is improved, errors caused by manual operation are avoided, and the product percent of pass is improved.