Investigation Of Tool Wear Characteristics For Numerical Control Sculpture (NCS) Machine

Muhammad Jabir , Suleiman (2007) Investigation Of Tool Wear Characteristics For Numerical Control Sculpture (NCS) Machine. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This paper presented an investigation of tool wear characteristic based on the machining process on Numerical Control Sculpture (NCS) machine. Typically time is the major parameter or indicator being used in measuring the progress of machine capability. The technicians in Fujitsu Component (M) Sdn. Bhd. approximately indicated that the maximum wear occurred on cutting tool during 2 hours of machining time. But in certain cases, there are cutting processes than can run more than 2 hours without changing the wear cutting tool with the new one. For that matter, the factors that can contribute to the wear phenomena are the machining parameters, machining condition, type of cutter, machining material and the shape of work material are investigate. Referring to the technician’s assumption, so there are 4 different gaps of time have been chosen beginning from 35 minutes, 70 minutes, 105 minutes and 140 minutes. Instead of checking the cutting tool life, the surface quality of the work material will also be analyzed based on surface roughness measurement as affected from 2 types of cutting tool from different material properties. Entirely this investigation consists of 32 pieces of cutting tool from different shape and material, and 32 pieces of work material from 2 different type of material, Copper Tungsten and Mild Steel SS 41. The obtain results shows the wear mechanism occurred earlier during 105 minutes, less than expected and become more critically when it reached to 140 minute or greater than 2 hours. Additionally, Carbide proved to be the most hardest and high quality cutting tool rather than High Speed Steel (HSS). The overall result have shown that after 2 hours of cutting time, the cutting tool should be replaced with the proper and appropriate one as to match with the required cutting conditions and parameters.

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