Host: Transdisciplinary Federation of Science and Technology
Name : The 10th Conference of Transdisciplinary Federation of Science and Technology
Number : 10
Location : [in Japanese]
Date : November 30, 2019 - December 01, 2019
Tribological properties such as lubrication, friction and wear resistance are important for mechanical engineering to improve machine operating efficiency, machine performances and machine life. To improve the tribological properties, surface texturing methods are available such as scraping. Scraping fabricates many small depression on target surface evenly, the depression will act oil hole to promote lubrication performance. Many researchers have reported the surface texturing method to employ fast tool servo, turn mill processing and digital data based texture machining. This paper reports a surface texturing method by ultrasonic vibration turning to improve tribological properties. In ultrasonic turning, cutting tool is vibrated in principal direction and radial direction simultaneously. The radial direction tool vibration acts to dig up or to push workpiece surface in radial direction periodically, textured surface will be obtained. In order to evaluate the tribological performance of the turned surface, friction coefficient between stainless steel pin and turned surface were measured under oil dipping condition. It was confirmed that friction coefficient of ultrasonic turned surface is reduced compared with ordinary turned surface. Another effects of ultrasonic turning that hardness and wear resistance property of turned surface improvement were observed in this research.
