Investigation on rotary ultrasonic assisted end grinding of silicon nitride ceramics

Abstract

In this study, rotary ultrasonic assisted end grinding (RUAEG) of silicon nitride (Si 3 N 4) was discussed. In addition, comparison of RUAEG with conventional end grinding was carried out. Machining parameters effect on the process was experimentally and statistically distinguished. Moreover, interaction of the influential parameters was discussed and the optimum condition was obtained. It is concluded from interaction plots that ultrasonic vibration influence on surface roughness was greater in lower cutting depths and higher rotational speeds. Moreover, by RUAEG process, it could acquire higher material removal speed with lower thrust force. Exerting ultrasonic vibration on the tool was more influential comparing to other grinding parameters. From morphological examinations, that was concluded RUAEG of ceramics results in lower amount of scratches, diminishing grinding lines and smoothing the surface due to be knocked continuously by the tool.

Empirical study on ultrasonic assisted turn-milling

“…Calculated regression correlations for cutting force based on ultrasonic vibration, tool rotational speed, workpiece rotational speed and feed rate are presented in Table 4. To examine the correlations accuracy, R-squared can be used 29 that is 98.94% for the presented correlations in Table 4.…”

Impact of geometrical parameters of ultrasonic-assisted grinding diamond tool on outlet stress and edge collapse of glass-ceramics

“…using simulation software, and the simulation model was verified by ultrasonic-assisted milling experiment and the geometric parameters in the machining process were optimized for hole milling. Kai Egashira et al [7][8]. conducted the ultrasonic vibration experiment of hard and brittle materials, and concluded that the causes of edge damage in the process of small hole machining are uneven stress distribution and internal structure.…”

Effect of crack propagation on surface formation mechanism and surface morphology evaluation of longitudinal–torsional composite ultrasonic mill grinding of Si3N4

“…They have a broad potential for applications in the aerospace, machinery manufacturing, medical, and healthcare fields. However, the development and application of these ceramics are seriously hampered by many problems, such as their low machining efficiency, poor machining quality, and high susceptibility to damage [1][2][3]. Numerous studies have indicated that ultrasonic-assisted milling is one of the most effective machining methods for efficiently processing ceramic materials with limited damage induced to the samples [4][5][6].…”