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題名 | 碳化鎢內孔粗車刀斷屑槽設計及切削中碳鋼之切削力研究=A Study on Chip Breaker Design of Tungsten Carbide Inside-hole Rough Turning Tools of the Cutting Force of Turning Medium Carbon Steel |
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作者 | 張充鑫; 陳大智; 黃宜倫; 江兆庭; | 書刊名 | 宜蘭大學工程學刊 |
卷期 | 9 2013.12[民102.12] |
頁次 | 頁82-100 |
分類號 | 446.893 |
關鍵詞 | 內孔車刀; 斷屑槽; 切削力; 切屑型態; Inner hole turning tools; Chip breaker; Cutting force; Chip type; |
語文 | 中文(Chinese) |
中文摘要 | 本文目的在探討及發展出一套具有階梯式斷屑槽的內孔粗車刀,並且與沒有斷屑槽之內孔粗車刀進行切削中碳鋼的切削力比較。研究過程中首先設計並研磨出具斜角斷屑槽的內孔粗車刀,其中斜角斷屑槽的設計含有二種斷屑槽斜角角度,配合五種斷屑槽寬度共十種組合,與無斷屑槽設計的內孔粗車刀作切削性比較。實驗中以切削動力計測量出內孔粗車刀切削中碳鋼時,在不同進給率和不同切削深度下的的三維切削力。另外針對不同斷屑槽斜角角度與不同斷屑槽寬度設計的刀具做切削力探討,整理出不同的進給率和不同切削深度下的切削力做分析,並與切屑型態做綜合比較,從中探討出較佳之刀具幾何形狀與加工條件,以降低切削力,並達到較佳的加工效果。實驗結果顯示斷屑槽寬度在1.0-3.0mm 範圍時,切削力隨著斷屑槽寬度增加而降低,但在1.5mm以上之後變化不大。進給率在0.42mm/rev以下時,斷屑槽斜角角度為25°之內孔車刀的切削力表現優於斷屑槽斜角角度為20°之內孔車刀。 |
英文摘要 | A study of cutting forces in turning medium carbon steels by using an inner hole turning tools with chip breaker are well studied. The cutting forces of turning medium carbon steel by inner hole turning tools with different feed rates and different cutting depths are measured by dynamometer. Those inner hole turning tools had chip breaker with different chip breaker rake angles associated with different chip breaker widths. The results show the cutting forces by the inner hole turning tools with chip breaker are less than the inner hole turning tool without chip breaker. The cutting forces decrease with the chip breaker width increase within 1~3mm, but this effect was not obviously when chip breaker width larger than 1.5 mm. Even the feed rate lower than 0.42mm/rev, the cutting force for the inner hole turning tool with 25° rake angle is less than the cutting force for the inner hole turning tool with 20° rake angle. |
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