| 摘要 |
PURPOSE: A method for manufacturing shank bolts for a cold and hot water mixing water valve is provided to manufacture shank bolts in an accurate shape and size in order to reduce the production cost by reducing the fraction defective. CONSTITUTION: A method for manufacturing shank bolts for a cold and hot water mixing water valve includes the following steps: A stainless steel rod is guided and transferred to an electric box in a state of being folded by a roller(100). The stainless steel rod is heated at 400-500 deg. C.(200). The heated rod is cut by a cutter(300). Using a press machine, a hexagonal column is formed in the inner side of the cut rod; a screw thread is formed on the one side of the exterior thereof; and a holding groove is formed in the other side of the exterior thereof(400). [Reference numerals] (100) Feeding process; (200) Heating process; (300) Cutting process; (400) Forming process |
