With increasing demands for product quality, and the performance of assembly equipment plays a decisive role for product quality, national experts and scholars conduct in-depth research on the performance of the assembly equipment. In this paper, a research simulation on hydrostatic bearing performance of heavy-duty vertical lathes DVT(digital vertical tool) 500 is carried out by using finite element software FLUENT to simulate the fluid pressure field and temperature field distribution of sector oil recess at different work platform rotational speed. The law of these field distributions is also obtained. The results show that: the rotational speed of the work platform has a greater impact on pressure field and temperature field of gap fluid flow. Numerical results can reflect the true hydrostatic bearing fluid movement, the actual simulation results provide a theoretical basis for optimization design of the Engineering hydrostatic bearing oil cavity.
Using the finite element analysis software ABAQUS, simulation experiments on physical nonlinearity, geometric nonlinear, nonlinear finite element, elastic-plastic in the cutting process are conducted, which realize the separation of chips and working piece combined with material failure criterion, shear failure, adaptive grid technique in ABAQUS. Meanwhile, the stress field, strain and temperature field and cutting force in the cutting simulation are obtained consistent with cutting theory.
Metal cutting is a very complex process of plastic deformation, and chip formation is a typical problem of large deformation, which involves the material nonlinearity, geometric nonlinearity and nonlinear state changes. Strain hardening model of Al 2024-T3 material is established based on elastic-plastic theory of material deformation. Finite element method is used in the analysis of the established model by ALGOR. The distribution of equivalent stress, yield stress and equivalent strain is concluded concretely in the metal cutting process in this paper.
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