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タイトルヨミ
シュコウグ ニ ヨル モクザイ ヒョウメン ケイセイ ニ カンスル ケンキュウ ゼンマイガンナ ニ ヨル ロクロ センサク シタ モクザイ ノ ヒョウメン カンサツ
タイトル別表記
Studies on the Formation of Wood Surface with Hand Tools Observation of the Wood Surface Machined by Wood Face Turning Lath (rokuro) with Zenmaiganna
ファイル
言語
日本語
著者
山下 晃功
林 和男
八田 秀次
内容記述(抄録等)
The turning is one of the handiwork, and this technic has been done from old times. In turning, the wood face turning lathe (rokuro in Japanese) is used. There are two types in rokuro turning, one is peripheral turning and the other is face turning (see Fig.1). The surface formed by the expert in rokuro turning has clear grain and is good glossy. But this tool (zenmaiganna in Japanese) that is used in rokuro turning is very simple structure, but machining mechanism by rokuro turning is very complicate because of the big change of grain direction and cutting speed during machining. Cutting angle and bias angle must be varied in correspondence with their change by expert judgement.
Therefore there are only a few date about rokuro turning so far.
In this paper, SEM observation of rokuro turning surface and analysis of the locus of tool at the face turning were done. Obtained results are as follows:
1) In the case of finished surface, cell cavities were filled with sand shavings and surface was very smooth. This smoothed surface is very good condition for coating treatment.
2) The state of machined surface is affected by cutting speed. In the case of face turning, cutting speed is big difference between near and far from the center of rotation for work material. The wooly grain occur near the center. To the contrary, the wooly grain don't occur at some distance from the center, and each fiber is recognized clearly.
3) The locus of tool cusp at the face turning is the circle with center at the point which is projected the support on the ctting plane (see Fig.11).
掲載誌名
島根大学教育学部紀要. 自然科学
23
1
開始ページ
61
終了ページ
67
ISSN
05869943
発行日
1989-07-25
NCID
AN00107941
出版者
島根大学教育学部
出版者別表記
The Faculty of Education Shimane University
資料タイプ
紀要論文
部局
教育学部
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