Research On Three Main Technical Problems About Fine-blanking Press

Fine-blanking is an advantaged process to produce precise sheet part, and requires good character for fine-blanking press. There was no complete information for design and manufactory of fine-blanking press that's more important to study manufactory techniques of fine-blanking press. This topic for fine blanking press performance requirements of the focus and difficulty, that is fine blanking press body stiffness requirements of sophisticated slider driven and dead center under the control of repeat accuracy of fine blanking press three key technical problems in study and research findings applies to the responsibility and Chongqing Jiangdong Machine Co. Ltd. jointly developed the fine blanking device. Research on the subject to promote the application of fine blanking technology and equipment of our fine blanking production has important practical significance.In the fine blanking press optimization fuselage structure, in view of the complexity of fine blanking press, instantaneous, heavy stress conditions and the high-precision die precision equipment to the high stiffness requirements, the design of the fine blanking press fuselage structure, and the establishment of fine blanking press body finite element analysis model. In MSC/PATRAN software, select the appropriate unit and effective method of fine blanking press body structure of three-dimensional finite element analysis; the simulation results are divided into the fuselage up-beams, columns, down-beams under the three parts separately analysis and comprehensive evaluation of the results of the analysis. The results of the analysis to improve the structure of fine blanking press body design and the re-establishment of the model, and then three-dimensional finite element analysis, to achieve satisfactory results until the final draw fine blanking press fuselage optimal three-dimensional map, to guide the actual production.Slider in the fine blanking press-oriented high-precision, since precision mold die gap is very small, generally thick unilateral space for the 0.5% expected. In order to ensure that the process of fine blanking, the precision of the next module, called fine blanking presses the slider to have precise orientation. Therefore, the subject of several guides on the press forms and compare, and choose a hydraulic fine blanking press-oriented form of static pressure slider form guide designed hydraulic fine blanking slider-oriented institutions to calculate the carrying capacity of static pressure and film guide stiffness design, and studied the film thickness control hydrostatic guide ways. Slider back and forth movement in the dead center under the precise control of repeatability, the punching die due to the gap between the small parts, the process of fine blanking punch into the die have to strictly control the depth, or will affect the workpiece quality and reduce the die life, fine blanking presses must have a high repeat accuracy of the closed high. The subject of several ways to compare hydraulic control, and research and design of fine blanking die under hydraulic pressure slider precise position control system.Fine blanking press in accordance with technical requirements, through the above-mentioned structural optimization of the fuselage, HIP study guide, slider position under the precise control of die system, the advanced technology of integrated innovation and research methods used in fine blanking press development, the proposed design of fine blanking press.The outcome of this issue has the value on engineering application.