(1. 華南理工大學(xué) 機(jī)械與汽車工程學(xué)院，廣州510640；
2. 廣東輕工職業(yè)技術(shù)學(xué)院 機(jī)電工程系，廣州 510300)
摘 要: 為了高效加工表面粗糙的微細(xì)鋁纖維，設(shè)計(jì)開發(fā)了一種新型的多齒刀具，利用該刀具能夠同時加工出多根金屬纖維。通過建立該刀具斜角切削的幾何模型，分析其切削機(jī)理，并通過試驗(yàn)分析切削用量對鋁纖維當(dāng)量直徑和表面形貌的影響。結(jié)果表明：該多齒刀具切削時，與工件接觸的所有細(xì)齒同時參與切削，并均可分屑出纖維；選擇合適的刀具參數(shù)和切削用量，即可獲得當(dāng)量直徑在100 μm以下的表面粗糙的鋁纖維。本試驗(yàn)中切削速度v、進(jìn)給量f和單齒切削深度Δ的最佳參數(shù)分別約為6 m/min、0.10 mm/r和0.037 mm。
關(guān)鍵字: 多齒刀具；鋁纖維；當(dāng)量直徑；表面形貌
（1. School of Mechanical and Automotive Engineering, South China University of Technology,
Guangzhou 510640, China;
2. Department of Mechanical and Electrical Engineering, Guangdong Industry Technical College,
Guangzhou 510300, China）
Abstract:In order to efficiently manufacture slim aluminium fiber with rough surface, a new type multi-tooth tool was developed, with which several pieces of metal fibers can be manufactured simultaneously. Its oblique cutting geometric model was built, and its cutting mechanism was also studied. The influences of cutting parameters on the equivalent diameter and surface topography of the aluminium fiber were analyzed by experiment. The results show that during cutting process the whole cutting layer can be split into pieces of fibers as all tiny tooth contacting the workpiece are involved in cutting. Aluminium fiber with rough surface and equivalent diameter below 100 μm can be manufactured through adjusting tool and cutting parameters. In this experiment, the optimum parameters of cutting speed v, feedrate f and cutting depth per tooth Δ are about 6 m/min, 0.10 mm/r and 0.037 mm, respectively.
Key words: multi-tooth tool; aluminium fiber; equivalent diameter; surface topography
