摘要
激光加热辅助切削是加工工程陶瓷材料的一种有效方法,关于辅助车削的研究较多,而激光加热辅助铣削的研究较少。本文搭建了激光加热辅助铣削试验系统,对氮化硅陶瓷进行了加工试验研究。随着激光能量升高,切削力降低,刀具磨损减少,切屑尺寸增加。工件表面粗糙度、表面形貌、表面组织与表面硬度的测量结果表明加工质量好、激光对工件不造成损伤。此外,研究了加工过程中产生的边缘碎裂现象,分析了工艺参数对碎裂宽度的影响规律。
Laser assisted machining is an effective composite processing technology machining advanced ceramics. While extensive studies have been conducted on laser assisted turning, few attempts have been made to milling operations. A laser assisted milling experimental system was established and experiments on laser assisted milling of sintered silicon nitride were carried on. Cutting force and tool wear decreased with laser power increasing, the size of continuous chips increase as the resuh of cutting zone temperature increasing. The experimental resuhs, including surface roughness, surface characteristics, microstructure and hardness, showed the good surface and no damage on workpiece. The mechanism of edge chippings formed in the process of LAM of silicon nitride ceramics was presented and the effects of operating parameters on chipping width were investigated.
出处
《工具技术》
2012年第5期20-24,共5页
Tool Engineering
