Grinder Bed Structure Optimal Design Based On The FEM

With the improvement of quality requirements of industrial product, manufacture of mechanical equipment needs to be more precise. As industrial appliances and the producers of the mechanical products, the structural properties of machine tools directly affect processing characteristics. As fundamental key parts of the lathe, the strength stiffness and dynamic characteristic of lathe bed plays a very important role in the design of machine tool. This paper studies the structure performance of a certain slideway grinder, and optimizes its structure based on the dynamic characteristics, and then does the coupled thermo-mechanical analysis for the optimized bed structure.Finite elements softwares ABAQUS is not convenient to model the complex structure, so the MK53160lathe bed entity model is set up in Solidworks, and saves as Parasolid*x_t, and then import the ABAQUS to carry on the static analysis, static analysis results shows that lathe bed has high static stiffness and strength to provide the basis for reduce body weight. Changing the bed structure as a starting point, firstly, several kinds of typical scheme for the rib wall is put forward with its dynamic analysis, a rational scheme for the rib wall is choosed. Secondly, typical unit structures of the lathe bed are picked up and optimized to find out the reasonable structure optimization parameters.Thirdly, depending on optimized results of unit structures, the improved bed schemes are presented and analyzed. According to the analysis based on the scheme, the dynamic capability of the lathe bed is improve a lot. The optimized model does he coupled thermo-mechanical analysis to research the hot deformation characteristics. The influential factors of the lathe bed thermal deformation are analyzed, and puts forward measures to reduce the thermal deformation and thermal stress.