Grinding motor energy saving method based on material removal model in rail grinding processes

Abstract

Railway is an environmental friendly method which has been widely used in the land transportation driven by electric powers, without harmful emissions and unhoped traffic jams. And it is important to guarantee the running safety through the technology of rail grinding. However, the empirical processes have limitations on the expanded requirements of frequent and systematic rail grinding. Therefore, it is necessary to build up the rail grinding model to fill the gap between the operating parameters and desired on-theground results. In this paper, a three-dimensional distribution model has been built to get a uniform special-distribution for grains and extract one slice as the representative grinding surface, with decahedrons grains transformed from spheres. Then the cutting force model and then related power model have been achieved based on the formed grinding surface with information of grains geometry and their locations. Calculation results show that the consumed power or the consumed energy have a close relationship with grinding speeds and grinding forces, which are closely related to the grain geometry, involved grain numbers, location of grains and their cutting depth. And it comes to a conclusion that a judgment for energy-saved grinding strategy depends on the grinding aims.