earticle

영어

General end-mill is considered and chosen by kinds and properties of material before machining, but in case of orthopedic surgery, cutting performance of orthopedic end-mill must be always best because bone condition is checked after operative preparation including skin incision. Generally hard metal end-mill is used for high cutting performance in industrial fields. To apply hard metal end-mill to robotic orthopedic surgery, prototypes with STS are manufactured and tested for determining proper number of flutes and helix angle, additionally proper overhang length of end-mill from sleeve end was determined by checking deflection under cutting load and critical speed using FEM program. As a result helix angle, blade number and overhang length are determined as 45∘, 3, 7cm respectively.