Discrete Element Simulation Of Vertical Milling Machine And Virtual Prototype Design

The traditional system of making rice procedure is included shelling, paddy separator, rice milling process and the finishing process rice, rice milling process of the main equipment for rice milling machine, its performance directly determines the quality of the rice, milled white rice process squeezed, the role of shear stress, composite excessive force often leads to broken rice production, rice milling machine for the current study, scholars have been tried to work process using continuum mechanics research Milling machine, which can’t be analyzed rice groups contact each single action movement between grain and rice, rice milling machine how to improve the performance and reduce the broken rice milling process, to ensure the food security of extraordinary significance.In this paper, the machine grind grain white rice milling sports room for the study, the use of virtual prototyping technology to build simulation models grain brown rice by discrete element simulation software, reasonably choose between brown rice grains, grain mechanical parts in contact with the rice mill work role model to study the movement of grain in the chamber, the constraint model for the subsequent establishment of the impact of broken down the key elements of its boundary conditions provide a theoretical basis. Through the establishment of rice milling machine model and simulate the flow behavior in the cereal grain augers, mechanical and kinematic laws reflect the true particle material handling process is complex, the key components for the rice mills were stress and strain analysis, grind machine spindle the natural frequencies and mode shapes, identify the stress distribution and the main areas of stress concentration; using Hypermesh software for topology optimization and optimization of discrete sizes, while saving material to obtain a more reasonable structure, for subsequent grinding machine designed to provide the basis of structural parameters.