(1. 华南理工大学 机械与汽车工程学院，广州510640；
2. 广东轻工职业技术学院 机电工程系，广州 510300)
摘 要: 为了高效加工表面粗糙的微细铝纤维，设计开发了一种新型的多齿刀具，利用该刀具能够同时加工出多根金属纤维。通过建立该刀具斜角切削的几何模型，分析其切削机理，并通过试验分析切削用量对铝纤维当量直径和表面形貌的影响。结果表明：该多齿刀具切削时，与工件接触的所有细齿同时参与切削，并均可分屑出纤维；选择合适的刀具参数和切削用量，即可获得当量直径在100 μm以下的表面粗糙的铝纤维。本试验中切削速度v、进给量f和单齿切削深度Δ的最佳参数分别约为6 m/min、0.10 mm/r和0.037 mm。
关键字: 多齿刀具；铝纤维；当量直径；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
