Experimental Research on Micro drilling Applying Turbine driven Air Spindle

YIN Shaohui, ZHANG Zhen, HU Tian, MAO Pengcheng, CHEN Fengjun, ZHANG Yi

Abstract

A micro drilling process using a turbine driven air spindle was developed to improve drilling quality. Some drilling experiments for drilling 0.5 mm holes magnesium alloy AZ31B sheet were carried out. The influences of rotational speed and feed rate on burr height at the exit of the micro hole, saperture error and roundness error at the entrance were investigated. The aperture error and the roundness error were obtained by the image processing and the least square method. Drilling parameters were optimized synthetically. The results show that performance of the spindle is in a good condition. When the rotational speed is 20 000 r/min and the feed rate is 0.4 mm/s, the comprehensive quality of micro drilling reached the best.

 

 

Keywords: micro drilling,  turbine driven air spindle,  image processing,  least square circle method


Full Text:

PDF


References


ENDO H. MARUI E. Small-hole drilling in engineering plastics sheet and its accuracy estimation [J]. International Journal of Machine Tools &. Manufacture.2006.46(6): 575—579.

RAHAMATHULLAH I, SHUNMUGAM M S. Analyses of forces and 1ю1е quality in micro-drilling of carbon fabric laminate composites [J]. Journal of Composite Materials» 2013. 47 (9): 1129— 1140.

SOMASUNDARAM G. BOOPATHY R S. PALANIKUMAR K. Experimental investigation on roundness error in friction drilling and mechanical properties of Al/SiCp-MMC compositcs [J]. Mecanique and Industries, 2011, 12 ( 6): 445 -457.

CHEN Ze. Technology research and database development of micro-hole drilling [D].Beijing: School of Mechanical Engineering. University of Science and Technology Beijing. 2010: 1 — 15. (In Chinese)

TANG Ying, CHEN Zc. WU Quan. et at. Micro-hole highspeed drilling process for aluminum alloy [J]. Aeronautical Manufacturing Technology, 2011(5):46—50. (In Chinese)

IA Wei. Research on key technology of high speed and precision micro-spindle driven by air [D]. Changsha: College of Mechanical and Vehicle Engineering, Hunan University.2014: 1 —10. (In Chinese)

LI Wei. ZHOU Zhixiong. HUANG Xiangming. et al. Devel-opment of a high-speed and precision micro-spindle for micro-cutting [J]. International Journal of Precision Engineering and Manufacturing. 2014.15(11): 2375—2383.

JIANG Lei. Development of a small kind of high-speed air-driven pneumatic precision spindle I D]. Changsha: College of Mechanical and Vehicle Engineering. Hunan University.2014: 1 —10. (In Chinese)

YANG Yuan. LI Jiaqiang. SONG Hongbao. et al. Research situation on application of magnesium alloys and its forming technology [ J].Hot Working Technology. 2013*42(8): 24 — 27. (In Chinese)

RUAN Rixing. LUO Hu. WANG Yongqiang. et al. Experimental study on double-surface magnetic abrasive polishing excited by toroidal magnetic Held [J]. Journal of Hunan University:Natural Sciences. 2016. 43(4 ): 31 — 37. (In Chinese)

ZHU Xiaocui. HAN Xuebing. ZHAO Yunfei. et al. Study on improving micro-hole machining quality by varying feed rate vibration drilling, [J].Tool Engineering. 2006.40(4): 54 — 56. (In Chinese)

BINAYAK B, YOUNG-SUN H. HAE-SUNG Y. et al. Development of a micro-drilling burr-control chart for PCB drilling [J].Precision Engineering.2014.38(l):221— 229.


Refbacks

  • There are currently no refbacks.