Tool wear mechanisms in axial ultrasonic vibration assisted milling in-situ TiB2/7050Al metal matrix composites
Tool wear mechanisms in axial ultrasonic vibration assisted milling in-situ TiB2/7050Al metal matrix composites作者机构：School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi'an 710072People's Republic of China School of Aeronautics and AstronauticsSichuan UniversityChengdu 610065People's Republic of China
出 版 物：《Advances in Manufacturing》 (先进制造进展（英文版）)
年 卷 期：2020年第8卷第2期
页 面：252-264页
核心收录：
学科分类：0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0811[工学-控制科学与工程] 0801[工学-力学（可授工学、理学学位）]
基 金：sponsored by the National Natural Science Foundation of China(Grant No.51775443) the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University(Grant No.CX201829) the National Science and Technology Major Project(Grant No.2017-Ⅶ-0015-0111)
主 题：Aluminum matrix composites Ultrasonic vibration Milling Cutting force Tool wear
摘 要：The in-situ TiB2 particle reinforced aluminum matrix composites are materials that are difficult to machine,owing to hard ceramic particles in the *** the milling process,the polycrystalline diamond(PCD)tools are used for machining these materials instead of carbide cutting tools,which significantly increase the machining *** this study,ultrasonic vibration method was applied for milling in-situ TiB2/7050A1 metal matrix composites using a TiAIN coated carbide end milling *** completely understand the tool wear mechanism in ultrasonic-vibration assisted milling(UAM),the relative motion of the cutting tool and interaction of workpiecetool-chip contact interface was analyzed in ***,a comparative experimental study with and without ultrasonic vibration was carried out to investigate the infuences of ultrasonic vibration and cutting parameters on the cutting force,tool life and tool wear *** results show that the motion of the cutting tool relative to the chip changes periodically in the helical direction and the separation of tool and chip occurs in the transverse direction in one vibration period,in ultrasonic vibration assisted cutting.I arge instantaneous acceleration can be obtained in axial ultrasonic vibration *** cutting force in axial direction is significantly reduced by 42%-57%,40%--57%and 44%-54%,at different cutting speeds,feed rates and cutting depths,respectively,compared with that in conventional ***,the tool life is prolonged approximately 2--5 times when the ultrasonic vibration method is *** tool wear pattern microcracks are only found in *** might be of great importance for future research in order to understand the cutting mechanisms in UAM of in-situ TiB2/7050A1 metal matrix composites.
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