Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/1730
標題: 從金屬車削切屑幾何探討理想的加工條件
Investigation of Ideal Machining Condition Considering the Chip Geometry
作者: 楊孟瑤
YANG, MENG-YAO
關鍵字: turning;車削;chip;cutting force;roughness;切屑;切削力;粗糙度
出版社: 機械工程學系
摘要: 
本文探討在車削加工的過程中,其切削力、表面粗糙度與切屑形狀的
關係。利用拋棄型的刀具切削中碳鋼,以三軸式的車削動力計量測刀具所
受的切削力,並使用表面粗糙度儀量測工件表面的粗糙度,收集並觀察加
工後切屑的形狀。實驗的過程中,改變不同的切削條件參數,可以得到切
削力及表面粗糙度與各項切削條件的函數關係。本實驗主要變化的切削條
件設定為:切削速度V、進給率t、進刀深度三種。實驗結果顯示:在高切
削速度下,容易產生連續的切屑,而切削速度減低則會產生不連續的切屑
,切削速度固定時,隨著進給率的增大,也較易產生不連續的切屑。相對
於切削速度與進給率,進刀深度對切屑形狀影響較小。當產生連續切屑時
,所受的切削力較小,表面粗糙度較佳,不連續切屑產生時,所受的切削
力較大,表面粗糙度較差。關鍵字:車削、切屑、切削力、粗糙度

In this paper, the variations of cutting force, surface
roughness and chip formiddle-carbon steel during turn machining
were investigated.A throw-away toolwas used. The cutting force
and surface roughness were measured using tridirectional
dynamometer and surface profilemeter, respectively. The chips
are collected and examined. The relationship between cutting
force and surface roughness versus the cutting condition can be
managed through variation of cutting parameters during the
machining process. The primary physical parameters governing the
cutting process are (1)cutting speed(2)feed rate and (3)depth of
cut. The experimental results show that, with increasing cutting
speed, continuouschip production occurs. With increasing feed
rate, the chip production rate is reduced. When cutting speed
and feed rate are changed, the shape of the chipchanges. Depth
of cut is not important to the shape of the chip. It was also
found that when continuous chips occurs, the cutting force is
lower and the machined surface becomes smooth. With higher
cutting force and poor surface roughness, the chip rate is
reduced. In turning, the production of continuous chips
indicates a lower cutting force and a smooth finished surface.
Keywords: turning,chip,cutting force,roughness
URI: http://hdl.handle.net/11455/1730
Appears in Collections:機械工程學系所

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