Simulation driven design and development of epoxy granite column for improved dynamic response of machining centre

Abstract

High cutting velocities, high spindle speeds and high feed rates that newlinecould lead to increased productivity and accuracy are frequently limited by newlinemachine tool vibration and thermal growth of critical components like newlinespindles. This is undesirable as it gives rise to problems such as poor surface newlinefinish of the machined components, damage to the cutting tool and reduced newlinemachining efficiency. The conventional materials like cast iron and steel may newlinehave the necessary strength to withstand heavy loads but they lack in damping newlineproperty which is a major requirement for a machine tool. Hence, it has newlineprompted researchers to explore alternate materials which have the capability newlineto dampen vibrations combined with better structural rigidity, higher thermal newlineand dimensional stability, better corrosion resistance, lesser weight and cost. newlineEpoxy granite (EG) is an alternate material which has better damping capacity newlinethan cast iron with added advantages of good adhesion property, lower cost, newlinebetter impact toughness, perfect formability and short curing time among the newlineother polymer concrete materials. However, the inferior stiffness of EG has newlinerestricted its usage for machine tool applications. Hence, the present work newlinefocusses on overcoming the above limitation by incorporating steel newlinereinforcements in EG structure and deriving the benefit of damping without newlinecompromising on the static stiffness. newlineThe primary objective of the research work is to design, analyze and newlinedevelop an epoxy granite column for improving the dynamic response of newlinevertical machining centre so as to enhance the surface finish of the newlinecomponents manufactured with higher productivity. newline