ABSTRACT
A variety of modern and challenging-to-machine wide range of contemporary, difficult-to-machine materials, including ceramics, composites, and hard and brittle materials have been possibly machined using RUSM, a mechanical form of the non-traditional hybrid method. In RUSM, the fundamental principles of ultrasonic machining and traditional diamond grinding combine to remove material at a faster rate, with better hole precision and better surface smoothness. The current paper reviews and reports on many investigations were conducted in the field of rotary ultrasonic machining for enormous materials. High-hardness materials that are challenging to manufacture can be worked with the help of ultrasonic machining (USM). When compared to other unconventional processes that cause thermal properties on the workpiece, such as electron discharge and laser beam machining, USM has the advantage of better finishing. The chemical and electrical characteristics of the material are also major limitations. This study presents the latest advancements in the USM variant, like the rotary ultrasonic drilling (RUD) machining technique. The various methodologies used by investigators to attain appropriate output characteristics, such as MRR and SR, are also reviewed in this work by changing the machining properties, including the tool type and support length, along with the variables such as spindle speed, feed rate, and ultrasonic power. The study also discusses the research on RUDs and the materials utilized with them generally.
