Mathematical Modeling and Analysis of Vibration Reduction of a Simulated Femoral Shaft using Robotic Assisted Damping Drilling System

Femoral shaft fracture is one of the prominent high impact energy injuries of the lower extremity. One of the common techniques to cut hard tissues in orthopedics, neurosurgery, and others is drilling. Robot assisted femoral shaft drilling and fracture reduction systems have been designed and their applications in the theatre room are vast, but still have some demerits. The use of robots in the theatre room for drilling and cutting hard tissues are so enormous due its flexibility and high precision Although, vibration drilling is also a method of adding axial vibration to the drill bit, but the objective research work is to focus on the modeling and analysis of possible damage caused by high cutting force and vibration with an effort to reduce the drilling force and the consequence of vibration on bone micro-structure during repositioning and drilling. This experiment encompasses the use of integrated vibration reduction system includes ‘8 sets of visco-elastic air balloon damper’, 6DOF Hans Robot, flexible bracket, contact vibration sensor, force sensor, the jig frame, the drill, air-pump, proportional air controller (PAC), air control lines, drill, speed controller, voltage amplifier and Monitor (Laptop).