id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-2082	Li, Jirui; Yang, Yingxin	Kinematic Characteristics of Vertical Runner and Numerical Simulation Analysis of Rock Breaking	2022	8	.pdf	application/pdf	4514	188	63	Speed breakdown of runner cutting teeth The length of the track is determined by the contact time between the cutting teeth and the rock and the implicated speed of the runner, while the width of the track is determined by the contact time between the cutting teeth and the rock, the track width and the relative speed v_ Yingxin Yang Abstract: In order to solve the problems of PDC teeth easy to collapse and fail in hard, hard and soft interlaced formations and gravel bearing formations, low mechanical speed, and difficult orientation caused by high torque response of pdc bits in directional drilling, this paper proposes a new type of composite bit with vertical wheels on the blade.	cache/ajst-2082.pdf	txt/ajst-2082.txt