볼 엔드밀에 착탈이 가능한 자정형 스크류의 공구날 설계

The Tool Shape Design of the Self-Wiping Screw Used with Ball End-Mill

The objectives of this thesis is to provide the effective method of shape design and screw tools manufacture of the self-wiping co-rotating twin screw. The screw shape which is designed by the newly developed channel formula was compared with the shape of self-wiping type screws. The screw design program has been developed to design the shape of an extrusion screw and the cutting tool. With this program, general designers, with no particular knowledge of extrusion, can save time and make more effective design because of its ease of operation and simple menu-driven process. The new tool was designed and manufactured using the channel formula of exponent function type and the CNC machine which can be attached into the insert-type ball end mill holder.