TY - GEN
T1 - Design and fabrication of an aerodynamic micro-air journal bearing using micro-wire electrical discharge machining
AU - Wang, Yukui
AU - Zeng, Zhaoqi
AU - Wang, Zhenlong
AU - He, Xiaolong
PY - 2013
Y1 - 2013
N2 - This paper proposed a removal analysis and a contouring strategy of accurate micro-WEDM processing for an aerodynamic micro-air journal bearing for micro-gas turbine engine. It is designed based on aerodynamic theory and can be self-acting by the compressed air pressure. The rotor is stably rotated in a relatively low speed which is below one hundred thousand revolutions per minute, and is much lower than other references. The extended and trimmed tool path is adopted in this paper, and the cusp at the corner of the micro-air journal bearing is obtained by this method which is better than the common arc tool path. The inner and outer diameter of the micro-air journal bearing with a satisfactory shape and good surface quality is 1.068mm and 1.165mm, respectively. The minimum radius at the bottom of wedged-structure is 15.9μm. The kerf of the blanking is 43μm, and the machining discharge gap is 18μm under this machining conditions. The MRR calculated by experimental data is 0.00144mm2/min.
AB - This paper proposed a removal analysis and a contouring strategy of accurate micro-WEDM processing for an aerodynamic micro-air journal bearing for micro-gas turbine engine. It is designed based on aerodynamic theory and can be self-acting by the compressed air pressure. The rotor is stably rotated in a relatively low speed which is below one hundred thousand revolutions per minute, and is much lower than other references. The extended and trimmed tool path is adopted in this paper, and the cusp at the corner of the micro-air journal bearing is obtained by this method which is better than the common arc tool path. The inner and outer diameter of the micro-air journal bearing with a satisfactory shape and good surface quality is 1.068mm and 1.165mm, respectively. The minimum radius at the bottom of wedged-structure is 15.9μm. The kerf of the blanking is 43μm, and the machining discharge gap is 18μm under this machining conditions. The MRR calculated by experimental data is 0.00144mm2/min.
KW - Micro-air journal bearing
KW - Micro-wire electrical discharge machining
KW - Tool path
UR - https://www.scopus.com/pages/publications/84883683795
U2 - 10.4028/www.scientific.net/KEM.562-565.8
DO - 10.4028/www.scientific.net/KEM.562-565.8
M3 - 会议稿件
AN - SCOPUS:84883683795
SN - 9783037857397
T3 - Key Engineering Materials
SP - 8
EP - 12
BT - Micro-Nano Technology XIV
PB - Trans Tech Publications Ltd
T2 - 14th Annual Conference and the 3rd International Conference of the Chinese Society of Micro-Nano Technology, CSMNT 2012
Y2 - 4 November 2012 through 7 November 2012
ER -