EFFECTS OF CUTTING PARAMETERS ON ACOUSTIC FREQUENCY CREATED IN MACHINING OF COLD WORK TOOL STEELS

Abstract

The objective of this study is to investigate the effects of machining parameters on the acoustic frequency developed during the machining of cold work tool steels. The machining tests were carried out through a milling method with different machining parameters. Analogue acoustic signals obtained via the microphone were converted and digitized. During idle operation and cutting operation, the obtained spindle sound recordings were subjected to Fast Fourier Transform (FFT) and converted from the time domain to the frequency domain, and the statistical effects of cutting parameters were investigated by use of analysis of variance. Cutting speed was found to be the only influential factor for the acoustic frequency in idle time. In the starting of machining, the feed rate, cutting speed, and depth of cut were seen to affect the acoustic frequency, while the cutting speed, insert material, insert radius, depth of cut, and feed rate were seen to be effective in the later stages of machining.

Keywords

• Acoustic,Frequency,Fast Fourier Transform,Cold work tool steel

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