ANALYSIS OF THE RATIO OF CUTTING SPEED TO TOOL LIFE IN THE LATHE USING HSS TOOLS FOR WORKING ON SS400 MATERIAL

Abstract

This research contains the testing of cutting speed variables to determine the factors that influence the life and wear of HSS (High Speed Steel) tool for the turning process of SS400 steel material in order to obtain machining data to determine the service life and wear of a tool. The study was conducted by turning method that will be made 3 variables in terms of spindle rotational speed, speed of cutting movement (feeding), and the method of cooling (coolant) in each process and then measurements were made on the cutting edge of the chisel with CMM (Coordinate Measuring Machine) before and after the tool is used to determine the size ratio as the highest wear parameter of a tool in 3 turning variables. In this study temperature measurements were carried out on the cutting edge of the chisel after being used in the turning process to determine the temperature produced on the cutting edge of the chisel with the turning process using 3 different variables. At the cutting edge of the chisel that has been used in the turning process the object is enlarged using a digital microscope with 40 times the magnification to see in detail the parts that are experiencing wear. The final result in this analysis process is known that the lowest tool cut eye wear rate is in the A1 tool with a spindle rotating speed of 210 RPM, cutting depth of 0.5 mm, and feeding 0.5 mm / rev and the highest wear rate is in B2 tool with spindle rotational speed of 525 RPM, cutting depth of 0.5 mm, and feeding of 0.5 mm / rev. While the results of the minus the difference in measurement due to the increase in the dimensions of the tool measuring plane after the turning process caused by several factors such as the expansion of the tool after turning and piling up the furious flakes that stick during the turning process.