Miyoshi high-speed presses of the bed base and modal analysis
    High-speed presses of bed and base composition of the punch bed. Bed and the base is an essential component punch, almost all components are mounted on the bed. All the work required to withstand deformation forces at work. Therefore, the rational design of bed and base to alleviate the weight of punch, punch increase the stiffness has a direct effect. To make the body has a high dynamic stiffness, its modal analysis, to understand the dynamic characteristics is very important. Modal analysis for analyzing high-speed presses vibration and noise to provide a theoretical basis.
    Bed and punch the base structure is more complex, larger size, in order to facilitate analysis and calculation, modeling required before them some reasonable simplification, both to reduce the workload and improve work efficiency, yet precision, so the Its simplified as follows:
    (1) bed and the base material considered to be isotropic material, density distribution, and is perfectly elastic body;
    (2) does not ignore some of the smaller size as the main load-bearing parts and does not affect the overall strength and rigidity of the machine parts, such as Lei pits, holes and other lines;
    (3) simplify the transition arc portion farther away from the stress concentration area is rectangular, and some in the process required chamfer, draft angle, etc. are not considered.