On the mechanism of edge chipping reduction in rotary ultrasonic drilling: A novel experimental method

摘要: Abstract Edge chipping induced by the mechanical machining of holes in brittle materials restricts applications materials. Rotary ultrasonic drilling is a suitable approach for with smaller size edge chipping. A good understanding mechanism reduction when employing rotary helpful to application and optimization technique. In this study, novel considering machining-induced cracks was proposed verified experiments on quartz glass. The crack evaluated experimentally. Experimental results indicate that initiation determined both magnitude driving force crack. However, strongly depends undrilled thickness following directly proportional relation. Moreover, geometric similarity evidence consistency propagation direction begins. Finally, conducted under various conditions demonstrate another important factor contributing drilling, comparing conventional diamond drilling.