Study on On-site Preparation Technology of Micro-milling Tool
-
摘要: 提出基于WEDG技术的微铣刀在位制备方法,将微铣刀的制备与使用结合起来,在同一台微细电火花加工机床上完成微铣刀的在位制备与在位铣削过程,可实现微铣刀的低成本高精度制备,同时避免微铣刀的二次装夹所造成的倾斜和偏心误差,提高微铣削整体质量。为验证基于WEDG技术的微铣刀在位制备工艺方法的可行性,基于自研μEM-200CDS2型双主轴三工位微细组合电加工机床平台,进行了微铣刀在位制备与在位铣削的实验研究。结合WEDG工艺特点对微铣刀进行材料选用与构型设计,实现了直径小于100 μm、刃口锋利的D型微铣刀的制备,并利用所制备微铣刀在位铣削出最小壁厚小于20 μm的一组薄壁结构。实验结果表明:基于WEDG技术的微铣刀在位制备方法在原理和技术上是可行的。Abstract: A novel method of micro-tools preparation with wire electro discharge grinding(WEDG) technology was presented. The method combines the manufacturing with the use of micro-milling tool, so the preparation and use process of micro-cutter would complete together on the same micro-EDM machine. In this way, the set-up errors caused by micro-cutter tilt and eccentricity errors could be avoided, and the overall quality of the parts would be increased. In order to verify the feasibility of on-site preparation technology of micro-milling tool via WEDG, a series of experiments were carried out based on the self-development μEM-200CDS2 double spindle three-position micro EDM platform. The influence of the tool material and geometric structure of micro-milling tool tip was analyzed, meanwhile, the carbide materials and the geometric structural of D shape were acquired which are suitable for WEDG processing. Finally the micro-milling tool with cutting edge diameter less than 100 μm were fabricated via WEDG, and a group of thin-walled structures with a minimum thickness less than 20 μm were machined with micro-milling. The results showed that the on-site preparation technology of micro-milling tool via WEDG is feasible.
-
Key words:
- micro-milling tool /
- WEDG /
- on-site preparation
-
[1] 王振龙.微细加工技术[M].北京:国防工业出版社,2005 Wang Z L. Micro manufacturing technology[M]. Beijing:National Defend Industry Press, 2005(in Chinese) [2] Chae J, Park S S, Freiheit T. Investigation of micro-cutting operations[J]. International Journal of Machine Tools and Manufacture, 2006,46(3-4):313-332 [3] 徐翱,周泉丰,阎磊,等.0.22 THz折叠波导行波管初步实验研究[J].强激光与粒子束,2013,25(11):2954-2958 Xu A, Zhou Q F, Yan L, et al. Initial experimental study on 0.22 THz folded waveguide TWT[J]. High Power Laser and Particle Beams, 2013,25(11):2954-2958(in Chinese) [4] 张海军,黄燕华,袁光辉,等.ICF微靶零件微铣削毛刺实验研究[J].制造技术与机床,2012,(7):134-138 Zhang H J, Huang Y H, Yuan G H, et al. Experimental study on burrs in micro milling ICF micro targets[J]. Manufacturing Technology & Machine Tool, 2012,(7):134-138(in Chinese) [5] 杨凯.微细铣削刀具磨损机理及工件毛刺影响因素的研究[D].哈尔滨:哈尔滨工业大学,2007 Yang K. Research on tool wear mechanisms and factors affectting burr formation for micro Milling[D]. Harbin:Harbin Institute of Technology, 2007(in Chinese) [6] 陈明君,陈妮,何宁,等.微铣削加工机理研究新进展[J].机械工程学报,2014,50(5):161-172 Chen M J, Chen N, He N, et al. The research progress of micromilling in machining mechanism[J]. Journal of Mechanical Engineering, 2014,50(5):161-172(in Chinese) [7] Filz S, Ozdoganlar O B, Romero L A. An analytical model for micro-endmill dynamics[J]. Journal of Vibration and Control, 2008,14(8):1125-1150 [8] Masuzawa T, Fujino M, Kobayashi K, et al. Wire electro discharge grinding for micro-machining[J]. CIRP Annals-Manufacturing Technology, 1985,34(1):431-434 [9] Dornfeld D, Min S, Takeuchi Y. Recent advances in mechanical micromachining[J]. CIRP Annals-Manufacturing Technology, 2006,55(2):745-768 [10] 郑凯波.微细铣削刀具实际等效前角的研究[D].南京:南京航空航天大学,2013 Zheng K B. Research on effective rake angle of micro milling tool[D]. Nanjing:Nanjing University of Aeronautics and Astronautics, 2013(in Chinese) [11] 张建磊.PCD与PCBN复合片电火花线切割加工工艺试验研究[D].大连:大连理工大学,2012 Zhang J L. Experimental study on WEDM machining of PCD and PCBN compacts[D]. Dalian:Dalian University of Technology, 2012(in Chinese) [12] 程剑兵.钨钴类超细硬质合金刀具及其切削性能研究[D].北京:北京理工大学,2015 Cheng J B. Research on cutting performance of WC-Co ultrafine cemented carbide cutting tools[D]. Beijing:Beijing Institute of Technology, 2015(in Chinese) [13] Uhlmann E, Schauer K. Dynamic load and strain analysis for the optimization of micro end mills[J]. CIRP Annals-Manufacturing Technology, 2005,54(1):75-78 [14] Fang F Z, Wu H, Liu X D, et al. Tool geometry study in micromachining[J]. Journal of Micromechanics and Microengineering, 2003,13(5):726-731 [15] 赵万生.先进电火花加工技术[M].北京:国防工业出版社,2003 Zhao W S. Advanced electrical discharge machining technology[M]. Beijing:National Defend Industry Press, 2003(in Chinese)
点击查看大图
计量
- 文章访问数: 153
- HTML全文浏览量: 26
- PDF下载量: 8
- 被引次数: 0