微铣削加工机理研究新进展

The Research Progress of Micromilling in Machining Mechanism

微铣削加工技术在制造航空航天等领域所用的三维复杂微结构零件方面具有明显优势,而微铣削在加工机理、对表面质量要求等诸多方面都与常规铣削有着明显不同,因此非常有必要对微铣削加工机理进行研究。主要从切削刃钝圆半径引起的尺寸效应机制、刀具径跳对微铣削加工的影响机理、加工中毛刺形成机理以及加工中表面形成机理这四个方面对微铣削加工机理进行综述,介绍每个方面相对于常规铣削的不同,并重点分析切削刃钝圆半径的尺寸效应和微刀具径跳的产生原因、危害及研究现状,以及从仿真和试验两个方面对微铣削中毛刺形成过程和表面形成过程进行总结,对影响因素进行分析,并提出抑制毛刺的一些方法。探讨微铣削加工机理研究仍需注重解决的问题,为其后续发展方向提出一些建议。

Micromilling has obvious advantages in manufacturing intricate 3D microstructure parts that needed for a wide range of applications in the sector of aerospace etc. There are big difference between micromilling and macromiUing in machining mechanism, surface quality requirement and so on, so it is necessary to study the machining mechanism of micromilling. The research progress of the size effect mechanism of cutting edge radius, the influence mechanism of tool runout to machining process, burr formation mechanism and surface formation mechanism at home and abroad are revi＇ewed, and introduce the difference between micromilling and macromilling in this four parts, what＇s more, the reason, damage and research progress of size effect mechanism of cutting edge radius and tool runout are analyzed, the burr formation mechanism and surface formation mechanism are summarized from simulation and experiment, and the influence factors are also studied, some methods to suppress the burr are proposed. Finally, explore the problems in machining mechanism that still need to pay attention to, and put forward some suggestions for its development direction.