Study on the system matching of ultrasonic vibration assisted grinding for hard and brittle materials processing |
| |
Affiliation: | 1. School of Mechanical Engineering, Donghua University, Shanghai 201620, China;2. Manufacturing Research Center, Georgia Institute of Technology, Atlanta 30332, USA;3. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48105, USA |
| |
Abstract: | Ultrasonic vibration assisted grinding (UAG) is an effective processing method for hard and brittle materials. Compared with common grinding (CG), both of grinding force and workpiece surface quality is improved by UAG, but the principle of improvement is still unclear. In order to reveal the mechanism of grinding force reduction and grinding quality improvement in UAG, this paper presents a mathematical model for system matching in UAG of brittle materials. Assuming that brittle fracture is the primary mechanism of material removal in UAG of brittle materials, the system matching model is developed step by step. On the basis of this mathematical model, the mechanism of grinding force reduction and surface roughness forming are discussed. The advantage of UAG processing brittle materials is pointed out in theory. Using the model developed, influences of input variables on grinding force are predicted. These predicted influences are compared with those determined experimentally. This model can serve as a useful foundation for development of grinding force models in UAG of brittle materials and models to predict surface roughness in UAG. |
| |
Keywords: | UAG System matching Vibration frequency Grinding force Surface roughness |
本文献已被 ScienceDirect 等数据库收录! |
|