Work

End Surface Grinding Machinability of Zirconia Ceramics via Longitudinal–Torsional Coupled Vibration Rotary Ultrasonic Machining

Year: 2025

Type: article

Abstract: Zirconia (ZrO2) ceramics are advanced structural materials that exhibit exceptional performance in aerospace and other heavy-duty applications. Since conventional machining of ZrO2 ceramics presents significant challenges, this study employs the longitudinal–torsional coupled rotary ultrasonic machining (LTC-RUM) method for end surface grinding of ZrO2 ceramics. To elucidate the material removal mechanism of LTC-RUM, an analysis was conducted from the perspective of individual abrasive grains. Subsequently, LTC-RUM experiments were carried out on ZrO2 ceramic samples to investigate the effects of processing parameters on cutting force, surface roughness, and surface morphology. The results show that cutting force decreases with lower spindle speed and ultrasonic power, but increases with higher feed rate and cutting depth. The surface roughness decreases with increasing spindle speed, yet increases with feed rate. Moreover, the surface roughness initially decreases and then increases with increasing ultrasonic power and cutting depth. Compared to conventional machining methods, LTC-RUM significantly reduces cutting force and surface roughness, thereby improving workpiece surface quality. This study provides valuable insights into the application of LTC-RUM for machining ZrO2 ceramics and other hard and brittle materials.

Source: Micromachines

DOI: 10.3390/mi16091065

Authors: Fan Chen, Wenbo Bie, Kuohu Li, Xiaosan Ma

Institutions: Pingdingshan University, Henan Polytechnic University

Language: English

Topic: Advanced machining processes and optimization

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,534

Funders: China Postdoctoral Science Foundation, Pingdingshan University