Studay On The Ultrasonic Vibration Grinding Force Of Micro-groove Of Polyurechane Rubber

Ultrasonic vibration cutting (UVC) was taken for a new technology of ultra-precision machining. This technology could effectively improve the surface quality and the processing of the grinding efficiency. And it was began to be used and researched widely.With the development of science and technology, the ultra-precision machining for manufacturing microelectronic products will play an increasingly important role. This technology has been become one of the most important research subject in the manufacturing industry countries. The traditional precision processing technology is often very difficult to achieve the ideal processing precision and processing efficiency in the processing of advanced composite materials, such as engineering ceramics semiconductor wafer optical glass and plastic toughness material, etc. Ultrasonic vibration cutting have been done various theoretical researches in the processing of hard and brittle materials, and it has been many remarkable accomplishments. However, the UVC was far from enough in the research of precision processing of plastic materials. For example, the wear resistance of polyurethane rubber was3-5times than the nature rubber, because of its good plastic toughness and high strength. And it also has good buffer shock absorption effect. So the polyurethane rubber could be widely used in aviation electrical medical and health, etc. In this paper, we took the polyurethane rubber roll wheel subtle groove as the research subjects; we explored the changes of grinding force and the influencing factor in the processing of UVC.In the grinding material removal process, it had abrasive action between abrasive particle and the material and shearing action. The action in the grinding of the wheel surface was changing with the effective ground blade number constantly. With increased temperatures, it would also have the force function of material deformation. This paper first study from the view of single grits microscopic under the change a study factors in ultrasonic vibration grinding force. We establish polyurethane subtle groove through the ANSYS, with or without ultrasonic vibration force under the condition of the3-D model. With the finite-element analysis, we could imitate the inner-stress of the polyurethane rubber in the process of UVC. We could explain properly for the excrescent materials and the advantages of the ultrasonic vibration, with the dates of stress, strain, speed etc. which get from the3-D model. Moreover, we could provide the effectively guide for the ultrasonic vibration processing of polyurethane rubber and the production practice through the analysis of the3-D model.In the study of the fine grooved grinding force, we can change the roller by three direction force into the groove plane which cut to force and radial force, through to the subtle groove structural analysis, a polyurethane axial radial roller tangential direction of force and groove that the relationship between the plane stress. We can drive the single grits cutting depth and unit formula of grinding force in the processing of the UVC through the analysis of the resultant movement of cutting based on the grinding force model in the plane. Then we calculates establish ultrasonic vibration grinding conditions of grinding force model, and concludes that the ultrasonic vibration condition in order of grinding force of average cutting depth about three times the average plane grinding. These can effectively improve the machining efficiency, increase effective grinding blade number, and reduce unit grinding force. And these also can effectively reduce the grinding force rate, which are helpful for cutting the formation. As the roller into to the depth and the roller speed increase, the grinding force acted as a rising trend.