Grinding force of profile-grinding bearing rail platform for ballastless track slabs
Jianchao Zhang1, Na Liu2, Yanjun Han3
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 304-309
1 Engineering Training Center, Shijiazhuang Tiedao University, 17 Northeast, Second Inner Ring,Shijiazhuang, Hebei, China
2 Shenyang Heck Machine Tool Co. Ltd., 16 Xihebei Road, Shenyang, Liaoning, China
3 School of Mechanical Engineering,Shijiazhuang Tiedao University,17 Northeast, Second Inner Ring,Shijiazhuang, Hebei, China
High-precision grinding for CRTSⅡ ballastless track slabs is needed before these slabs are laid on high-speed rails. Thus, the current study focuses on the grinding force of profile-grinding bearing rail platforms. First, the formulas of cutting force and sliding friction force of a single diamond grit are analyzed. Second, an experimental method using a scanning electronic microscope is proposed to analyze the samples of bearing rail platform after grinding as well as to calculate the number of cutting grits and sliding grits in the grinding arc. Third, the mathematical models of cutting force and sliding friction force are established based on the four grinding profiles of the bearing rail platform. Last, the grinding force formulas of the profile-grinding bearing rail platform are deduced. The current study analyzes the parameters that influence the grinding quality of the bearing rail platform to promote track slab grinder optimization.