Effect of feed condition on thrust force and torque during continuous and step-by-step drilling of cortical bone

摘要: Abstract Chip evacuation is one of the fundamental difficulties during continuous drilling cortical bone. As process progresses, discontinuous chips tend to cluster together and clog drill flutes, which can result in increased temperature, poor hole quality, elevated thrust force torque, even cause bit break. In this study, step-by-step processes bone were conducted investigate torque using experimental numerical modeling methods. By finite element method, an elastic–plastic constitutive model was employed predict experienced drilling, a series tests conducted. The results showed significant increase owing chip clogging while not observed simulations. It shown that method reduce bone, demonstrated be consistent with ones. reduced indicated may by suggested used assist surgeons selecting conditions control