| With the development of production and the continuous emergence of new materials, the endless stream of new forming process and forming technology, the traditional mechanical presses can not meet the production process and use requirements. A new generation of molding equipment- AC servo press studied in this paper, which can not only meet the high-precision, high speed, etc of traditional mechanical presses, but also improved its fixed working mode, single-motion characteristics, the poor fitness of process, bring a more flexible space for the manufacturing process. Based on the analysis of this press, can be more comprehensive understanding of foreign advanced technology, which provided reference for our own design and optimization of press equipment.According to Komatsu company's main performance parameters of H1F type 80t servo presses, through a rational allocation of transmission ratio, design this transmission structure, every part entity model of the press is established by the UG and CAXA software.Through the calculation of kinematics and dynamics of transmission system, obtained the movement rule of the slider and the relational equation between the input torque of the crank and impulse pressure. At the same time, start a simulation analysis on the transmission mechanism by a dynamic analysis software-ADAMS, then get the motion curve of slider, the force of key points and the instantaneous kinetic curve of each component, thus, obtain the process, force and the Kinetic energy distribution on every part of press.When the components assembled in the UG, it will import it into ANSYS, then conduct the finite element analysis. Under the action of work force, we find the position of stress dangerous point, and obtain the equivalent stress and deformation contours of the rack. Finally, carry out the dynamic modal analysis of the rack, frame calculate the natural frequency and corresponding mode shapes in the given boundary conditions of the rack and conduct analysis in details combined the mode shapes, to avoid the resonance effect generated during normal operate, and provide a theoretical basis for reliability design. |
