IN-PROCESS TOOL WEAR AND CHIP-FORM MONITORING IN FACE MILLING OPERATION USING ACOUSTIC-EMISSION

This paper discusses the need for on-line tool condition monitoring an d chip-form identification during metal machining. Acoustic Emission ( AE) analysis was applied to study the effect of tool wear and correspo nding change in chip-form in face milling. The AE parameters and flank wear were measured at fixed interval. Also chips were collected simul taneously at same interval. The results indicate that the AE parameter s namely ringdown counts, rise time increase with progressive tool wea r; however number of events and event duration are sensitive to chip-f orm. These results may be readily used for in-process monitoring of ch ip status and consequently tool condition.