查詢結果分析
來源資料
頁籤選單縮合
題 名 | 杉木壓縮木材二次元切削之研究=Orthogonal Cutting Properties of Compressed Wood Made from Plantation China-fir |
---|---|
作 者 | 黃彥三; 陳欣欣; 黃國雄; | 書刊名 | 林產工業 |
卷 期 | 18:3 1999.09[民88.09] |
頁 次 | 頁251-256 |
分類號 | 474.1 |
關鍵詞 | 壓縮木材; 二次元切削; 切削力; 摩擦係數; Compressed wood; Orthogonal cutting; Cutting force; Coefficient of friction; |
語 文 | 中文(Chinese) |
中文摘要 | 人工林針葉樹材之材質較闊葉樹材鬆軟,且其春秋材間之物理與機械性質差異明 顯而成為加工利用上之缺點。惟此一缺點可藉壓縮木材之製造技術獲得改善。此等壓縮木材 之比重與強度隨壓縮率之增大而增加,而木材之切削抵抗常隨木材之比重與強度之增加而增 大,因此為提高壓縮木材在家具、建材與木材工藝等各方面之應用,有必要探討其切削加工 性能。本試驗以蓮華池分所杉木造林木為試材,經製成不同壓縮率之壓縮木材,然後進行二 次元縱切削試驗,測定切削力之水平分力及菙直分力,其結果顯示:切削力之水平分力隨壓 縮率之增加而明顯增加;熱處理材切削力之垂直分力隨壓縮率之增加而有增大之趨勢;比切 削力隨切削深度之減小而增大,隨壓縮率之增大而增大;切削摩擦係數與壓縮率無明顯關係 ,但隨切削深度之減小而增大。 |
英文摘要 | Softwood is, in general, softer and lighter than hardwood. The distinguished physcial and mechanical properties of softwood between early wood and late wood often become the cause of defects during processing. But this weakness can be improved by a conversion to compressed wood. It can be expected that the density and strength of compressed wood increase with the increase of compression set, and also the cutting resistance. Therefore, it is necessary to know the machinability of compressed wood, which is important for its utilization. In this study, plantation China-fir (Cunninghamia lanceolata) green wood was compressed in the radial direction for various compression sets. and then orthogonal cutting parallel to the grain was applied. The results showed that the parallel cutting force increased with the increase of compression set, the normal cutting force of heat treated wood increased with the increase of compression set. The specific cutting force increased with the decrease of the depth of cut and increased with the increase of compression set.There was no clear relationship between cutting coefficient of friction and compression set, but it increased with the decrease of the depth of cut. |
本系統中英文摘要資訊取自各篇刊載內容。