Influence of Orthopaedic Drilling Parameters on Surface Roughness and Cutting Force of Bone Drilling Process

Keyword: Bone drill-bit; Surface Roughness; Cutting Force; Machining; Response Surface Method Abstract. I n orthopaedic surgery internal fixation of bone fractures using immobilization screws and plate is common procedure. This surgical procedure involved drilling into bone and fixative components interaction. Many problems are encountered with the bone drilling process such as holes accuracy, drill wander and excessive heat generation which were directly related with the drilling parameter. This paper investigates the effect of drilling parameter namely spindle speed and feed rate on the cutting force and surface roughness performance. Design of Experiment (DOE) historical data of Response Surface Method (RSM) were adopted to evaluate the correlation between the cutting parameter and the holes performance. From the conducted investigation, the most significant parameter that affect the holes performance was spindle speed followed by the feed rate. In addition, the interaction between feed rate and spindle speed also controlled the holes performances.