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題名 | 刀具傾斜角對切削顫振之影響=The Effect of Variation of the Rake Angle in Cutting Dynamics |
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作 者 | 林振森; 鄧琴書; | 書刊名 | 聯合學報 |
卷期 | 15 1997.11[民86.11] |
頁次 | 頁221-242 |
分類號 | 446.893 |
關鍵詞 | 切削; 顫振; 傾斜角; Cutting; Chatter; Rake angle; |
語文 | 中文(Chinese) |
中文摘要 | 由於刀削過程中剪力Φ、傾斜角α及磨擦角β是決定切削力的重要因素,改變刀 具傾角即改變切削剛性及阻尼係數,因此亦改變了切削動態行為,即改變了切削之穩定性, 因此本文主要研究刀具傾斜角的變化對切削顫振之影響。研究上首先建立切削力與切削角度 間關係,利用微擾法導出動態切削時穩態區與不穩態區。並利用數值分析法研究顫振振幅, 以時域分析法討論改變刀具傾角對顫振振幅抑制情形。結果顯示,刀具傾角的改變影響切削 動態,因而有抑制顫振之效果,但在大顫幅顫振區中抑制的效果並不顯著。 |
英文摘要 | This study is tried to investigate the influence of rake angle on the chatter supression. During the cutting operation, cutting forces are depended on the cutting condition, tool angles, shear angle and the frictional condition between chip and tool surface. For this viewpoint, the change of the rake angle will affect the cutting dynamics. The schemes of analysis are proposed in two way. One is to use method of perturbation for linear stability and find the boundary of the neutral stability. Another way is to adopt numerical method to obtain the relationships of amplitude and cutting parameters. The results of the analytical method and numerical method, we could find that the change of the rake angle will affect the cutting dynamics. Also increasing the rake angle during cutting process will suppress the chatter amplitude. |
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