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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/211


    Title: 整合插補、伺服與切削模組之虛擬動態系統開發
    Authors: 劉景銘;LIU, JING-MING
    Contributors: 機械工程系研究所
    Keywords: 端銑削;切削力;切削顫振穩定圖;顫振;工具機;End milling;cutting force;Stability lobe diagram;chatter;Machine tool
    Date: 2016
    Issue Date: 2019-07-17
    Publisher: 機械工程系研究所
    Abstract: 切削過程的不穩定振動常會導致刀具磨損、工件的表面精度變差,甚至影響工具機的壽命,此現象稱為顫振。因此在切削加工中,顫振問題常常造成加工者們的困擾,為了避免切削顫振的產生,需要建立一切削顫振穩定圖來進行顫振穩定性預測。本論文主要為開發一整合插補、伺服與切削模組之虛擬動態系統,以預測切削過程中的切削力及影響,在此分為三個不同主題探討。首先是建立一切削力學模型,以模擬切削過程中的切削力現象及大小,並且分析振動量與切削力之關係。第二部分為建立切削穩定曲線圖,加工者在加工時,為了避免切削顫振產生,時常使用較保守的切削參數,因此為找尋切削之極限切深,本論文建立一切削穩定曲線圖。第三部分為探討切削過程中,切削力對伺服軸造成的影響,藉由上述建立之系統模型,並整合插補器跟伺服模型,觀察切削力對伺服軸之影響,並配合第一部份的時域切削力模擬、第二部分的穩定性曲線圖,找尋一穩定的切削加工參數,以提升切削製程中加工成品的表面精度。
    In the cutting process, the unstable vibration usually lead to cutting tool wear, workpiece surface deterioration, and even affect the machine tool’s life. This phenomenon is called chatter. During the machining process, the processor is often worried about the chatter problem. In order to avoid the chatter, a chatter stabilization diagram is needed to predict the stability of the chatter.The purpose of this thesis is to develop a virtual dynamic system of interpolation, servo and cutting module to predict the cutting force and influence in the cutting process. It is divided into three different parts. The first part is to establish a cutting mechanics model to simulate the phenomenon and size of cutting force during cutting and analyze the relationship between vibration and cutting force. The second part is to establish the cutting stability diagram. In order to avoid chatter, the processor always uses more conservative cutting parameters, so in order to find the limit cutting depth, this thesis establishes a cutting stability diagram. The third part is to discuss the effect of cutting force on the servo axis during the cutting process. By combine the cutting, interpolator and servo model to observe the influence of the cutting force on the servo axis. And with the first part of the time-domain cutting force simulation, the second part of the stability diagram, to find stable cutting parameters in order to enhance the cutting process in the finished surface precision.
    Appears in Collections:[機械工程學系] 學位論文

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