Motion Simulation Of Die Polishing Structure And Study On The Polishing Technological Parameter

At present, manual polishing has been occupying the dominating position for the complex shape die of automobiles. Manual polishing makes unstable quality, low efficiency, and prolonged production lead time of die. As a result, it influences the marketable competing power.At present, a few die companies use the full automatic polisher, because it is very expensive and can only be used in homogeneous polishing. On the other hand, the existing minitype polisher cannot locate the load direction well. So developing the semiautomatic die polisher is a feasible plan. Not only can it reduce the cost, but also it can decrease polishing workers'labor intensity, and increase the efficiency. In addition, it adapts any the die company, and it can be used in homogeneous and heterogeneous polishing as well. The main results of dissertation are as follows: Firstly, analyzing the characteristics of automotive die so as to find optimal polishing technique. Secondly, design the polishing structure, model, and assemble the structure; then, make motion simulation with Pro/E software. Thirdly, study the adaptability between polishing disk and automotive die surface and find the boundary condition to polishing the typical die surface with three polishing disks. Fourth, according to the plasticity theory and slip line theory, establish the contact pressure model between the single grain (simulative) and the die surface, and test the feasibility of the model. Finally, study the polishing technological parameters (including driving spindle speed, feeding speed) to affect die surface roughness, and build data-base of polishing technological parameters with acquired knowledge and positive consequence.