Development of design and manufacturing technology for end mills in machining hardened steel

Tool geometry such as rake angle and clearance angle was clearly defined to solve the difference in communication between the design and measurement stages. Using the simulation program, the wheel was properly determined and the end mill manufactured accurately. The performance test with the well-defined end mill provided sufficient information to determine optimal geometry. In this paper, end mills for machining hardened steel were designed and manufactured. The performance test conducted yielded the optimal rake angle and clearance angle. Likewise, a specific software for automatic end mill production was developed for the simulation and generation of NC code as CAD/CAM system.