CNC花鉋機鉋花直刀外周斜刃角對切削抵抗及切削噪音之影響

Effects of the Helix Angle of CNC Router-bit on the Cutting Resistance and the Cutting Sound Pressure Level in Milling Wood

蘇文清(Wen-Ching Su) ； 王怡仁(Yi-Ren Wang) ； 洪國榮(Kuo-Jung Hong)

《林產工業》 19卷1期 (2000/03) Pp. 49-58

https://doi.org/10.6561/FPI.2000.19(1).5

摘要

本報告係將鉋花直刀之外周斜刃角改變，然後分別安裝於CNC花鉋機上，以轉速12000 rpm，4 mm切削量及4800 mm/min之送材速度銑削中密度纖維板（MDF）、硬槭及杉木，進而探討外周斜刃角對切削抵抗、切削音壓位準及加工面粗糙度之影響。試驗結果顯示不同外周斜刃角銑削上述三種材料之切削抵抗、音壓位準及加工面粗糙度三者間並無明顯趨勢，但就良好加工面及刀具壽命的考量下，可得知MDF之切削以外周斜刃角2°最佳，而硬槭及杉木切削則以外周斜刃角4°為宜。

關鍵字

電腦數值控制 ； 外周斜刃角 ； 銑削 ； 切削抵抗 ； 音壓位準 ； 粗糙度

並列摘要

The objective of this study was to explore the effects of various helix angles of router-bits on cutting resistance, cutting sound pressure level and surface roughness. These router-bits were mounted on computer numerically controlled (CNC) router to mill MDF, hard maple and China-fir with rotational speed of 12000 rpm. The routing depth of 4 mm and the feed speed of 4800 mm/min were fixed during this experiment. It was difficult to have a concrete conclusion on the effects of helix angle on cutting resistance, sound pressure level and surface roughness. However, the helix angle of 2° showed the best results in milling of MDF, and helix angle of 4° recommended for milling of maple and China-fir for their fine surface quality and expected long tool life.

並列關鍵字

CNC ； Helix angle ； Milling ； Cutting resistance ； Sound pressure level ； Roughness