Research On Cutting Force And Surface Quality Of Aramid Paper Honeycomb Composite Material In Ultrasonic Vibration Assisted Cutting

Currently aramid paper honeycomb composite material has been widely used,especially in the aerospace field,because of its characters such as high specific strength,corrosion resistance,sucking the vibration,penetration of electromagnetic waves.The honeycomb composite material has become one of the indispensable structural materials in the field with its superior performance,but because of its special characteristics of the material structure,aramid paper honeycomb composite materials are gradually being treated as a kind of difficult processing material to deal with.At present,the earliest and most common method for processing of the honeycomb composites is milling,and because of the shortcomings such as low processing efficiency and poor processing quality,this traditional machining method can not meet the actual demand.Ultrasonic vibration assisted cutting is a new type of composite processing method combining ultrasonic vibration processing with traditional cutting processing.It has the advantages of small cutting force and high processing quality.It is widely used in the precision and efficient processing of fiber materials which are difficult to process.However,due to the blockade and confidentiality of relevant technical information,the domestic research progress on the corresponding material removal mechanism and processing technology of this processing method is relatively slow and not a system.Therefore,this paper designed a test device of ultrasonic vibration assisted cutting aramid paper honeycomb composite material,the cutting force and the surface quality of the material after processing under the ultrasonic vibration assisted and ordinary cutting conditions were studied systematically through theoretical analysis and experiments.The pointed cutter cutting and the disc cutter cutting,as the two kinds of independent methods of roughing and finishing of the aramid paper honeycomb composite,and their dynamic characteristics in the cutting process are analyzed according to their processing movement characteristics.Based on this,the mathematical model of the cutting force with the pointed cutter cutting under ultrasonic vibration assisted condition is established.The cutting force under the ultrasonic vibration assisted condition is smaller than the corresponding cutting force under the ordinary condition.The effects of cutting parameters such as cutter feed speed,deflection angle and cutter speed on the cutting force and surface quality of different cutting cutters under ultrasonic vibration assisted cutting and ordinary cutting are studied by designing certain experimental schemes.The experimental results show that,the cutting force under the ultrasonic vibration assisted cutting condition is better than that under the ordinary cutting condition,and combining with the changing trend of cutting force with the cutting parameters,the experimental conclusion is to verify the validity of the theoretical model of the cutting force with the pointed cutter cutting and the existing theoretical model of the cutting force with the disc cutter cutting.The conclusion of analysis about the cutting parameters impacting on the cutting force and the surface quality provide a certain reference to the actual processing process for the selection of specific process parameters.