WASET
	@article{(Open Science Index):https://publications.waset.org/pdf/12104,
	  title     = {A Dynamic Model for a Drill in the Drilling Process},
	  author    = {Bo Wun Huang and  Ah Der Lin and  Yung Chuan Chen and  Jao Hwa Kuang},
	  country	= {},
	  institution	= {},
	  abstract     = {The dynamic model of a drill in drilling process was
proposed and investigated in this study. To assure a good drilling quality, the vibration variation on the drill tips during high speed
drilling is needed to be investigated. A pre-twisted beam is used to
simulate the drill. The moving Winkler-Type elastic foundation is used to characterize the tip boundary variation in drilling. Due to the
variation of the drill depth, a time dependent dynamic model for the drill is proposed. Results simulated from this proposed model indicate that an abrupt natural frequencies drop are experienced as the drill tip
tough the workpiece, and a severe vibration is induced. The effects of parameters, e.g. drilling speed, depth, drill size and thrust force on the
drill tip responses studied.},
	    journal   = {International Journal of Mechanical and Mechatronics Engineering},
	  volume    = {2},
	  number    = {5},
	  year      = {2008},
	  pages     = {752 - 758},
	  ee        = {https://publications.waset.org/pdf/12104},
	  url   	= {https://publications.waset.org/vol/17},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 17, 2008},
	}