| 摘要 |
PROBLEM TO BE SOLVED: To obtain a forming tool which has complicated shape and has high hardness and durability like an outer form tool for forming a peripheral polyhedral wall can without depending cemented carbide and without depending on electric discharge machining in a short period of time and inexpensively by cutting work. SOLUTION: Prehardened steel having hardness of HRC 35-50 is adopted as steel and, by machining the steel with a ball end mill having a diameter of 1-6 mm, at a speed of rotation of 10,000-20,000 rpm and at a feed speed of 1,000-2,000 mm/min, the machining of the forming tool having high hardness and the complicate-shaped form surface is made possible. COPYRIGHT: (C)2011,JPO&INPIT |
