Harmonic analysis and experimental investigations of optimum cutting parameters for cnc turning centres

Abstract

Machine Tool industry is known as the mother industry of manufacturing industries. The metal cutting industry plays a vital part in machine working and fabrication that forms a significant industrial segment in India after the automotive industry. The increasing demand for Computer Numerical Control (CNC) machines has been aiding further growth of the machine tools market in India. Technavio s market research analyst has predicted the growth of the industry at a Compound Annual Growth Rate (CAGR) of 13 percent in India between the years 2016-20. According to 2014 World Machine Tool output and consumption survey by the Gardner Business Media, India ranks globally 13th in the production of machine tools and it is the 10th largest consumer. Aerospace, automotive and consumer durables are the industrial segments, where the demand for machine tools has grown rapidly in the last few years. CNC machines are employed in many industries to enhance production with greater accuracy. CNC machine generally consists of computer-controlled servo-amplifiers, servomotors, spindle motor and various tooling. The electronic components within a CNC machine are particularly sensitive to the electrical supply to the machine. Absence of transients or noise in electrical supply is the critical need for CNC machine for its smooth and trouble-free operation. The accuracy of CNC machine depends upon the mechanical rigidity, servo drives, servomotors, CNC systems, feedback devices, power quality etc. The performance of electronic devices is directly related to the power quality level in a facility. The machining processes considered in this research is turning. Keeping in view of the significance of the turning process, it is very important to automate the process, find the optimum process parameters and to systematically investigate the process or product variables that influence product and power quality. In industries, the values of cutting parameters are randomly selected in limits of minimum and maximum values suggested by the machine tool manufactures. newline