Cam Profile Curve Design And Motion Simulation Of Poshing Head

Polishing head is the core component of the ceramic tile polishing machine, the capability of which directly affects the machining quality and production efficiency of the polished tile. With the developments of real estate industry of our country, the enhance of national living standard and the fierce competition of the international building materials market, higher demands have been presented on the production and quality of the polished tile.Only to improve the quality of the polishing machine can meet all the above requirements. For now, high defect rate and large noise in the grinding process are the main defects of the domestic polishing machine. As for the polishing head, serious cam concentrated wear, low kinematic accuracy of the swing link and high repair rate are the main flaws. How to improve the service behaviour of the polishing machine and the polishing head and enhance the global competitive ability of the domestic polishing machine and polished tile are the urgent problems to be solved ahead of us.On the basis of practical investigation and consultation of mass relevant data, this paper takes the polishing head of the polishing machine as the research object and carries out key research and analysis on the cam swing link mechanism. In orderto study the head faced cylindrical cam profile, the cylindrical cam was unfolded into the form of planner cam. Based on coordinate transformation principle, the coordinate expressions of 1/6 segment ideal profile and actual profile were deduced and the values of the coordinate points were calculated in MATLAB. The cam profile curve was plotted in MATLAB and the coordinate points values were outputted to establish the 3-D model of the cam. The models of the cam and other parts of polishing head were also establied in SolidWorks, as well as the polishing head assembly. Aimming at the profile curve error existed in the method of unfolding cylindrical cam into planner cam, the actual movements of the swing link and the cam were simulated in ADAMS so as to measure the floating-values of the cam caused by the profile curve error during the simulation process. The cam model was rebuilt according to the curve revised by the cam floating-values and the motion simulation of the cam swing link mechanism model was carried out in ADAMS. In the point of the simulation results, the swing link motion law basically accords with the design, which proves the correctness of this method to design the spatial cam profile curve. The research of this paper provides new ideas for the profile curve design of the head faced cylindrical cam and has important reference value for the study and optimization of the polishing head.