In-Process Chatter Detection in Surface Grinding

Abstract

Abstract. The chatter causes the poor surface finish during the surface grinding. It is therefore necessary to monitor the chatter during the process. Hence, this research has proposed the in-process chatter detection in the surface grinding process by utilizing the dynamic cutting forces. The ratios of the average variances of three dynamic cutting forces have been adopted and applied to identify the chatter during the surface grinding process to eliminate the effects of the cutting conditions. The effects of the cutting conditions on the chatter are also studied and analyzed. The algorithm has been proposed to detect the chatter regardless of the cutting conditions. The verification of the proposed system has been proved through another experiment by using the new cutting conditions. The experimental results have run satisfaction. It is understood that the chatter can be avoided during the in-process surface grinding even though the cutting conditions are changed.

In-Process Prediction of Straightness in CNC Turning by Using Wavelet Transform

“…It is proved that the in-process surface roughness can be predicted well in CNC turning process by using the ratio of dynamic cutting forces [7]. The force sensor is employed to detect the chatter in the grinding process [8] and the milling process [9]. The cutting force ratio can help to cut off the effects of cutting conditions and reduce the data-processing time from the use of Fast Fourier Transform (FFT) technique.…”