| As the development of China's automobile, home appliances, light industry, instrumentation industry, the demand for mechanical press is growing. Improving the mechanical press's machine kinematics performance, ensuring processing quality, as well as improving labor productivity are the fundamental requirements of modern manufacturing.Multi-link mechanism has simple structure, can achieve much complex movement, therefore, it is widely used in modern engineering machinery, especially as transmission mechanism. Press with multi-link mechanism has better movement characteristics. In the working process, punches speed is low and stable, much lower than that of crank press, and this does good to the quality of stamping piece. Multi-link press has quick return characteristics, and it can ensure working efficiency. Multi-link press produce less vibration and noise during working process, and this can improve the service life of presses and tooling. Multi-link press has many advantages, so it is widely used throughout the world. Multi-link press takes place of crank press is becoming one of the development direction of the press.To improve working efficiency and usage of press, four multi-link press-L4-630E mechanical press is taken as the research object. Main work this paper does is:First, build 3d model of all the parts of working mechanism in UG, then assembly modeling, get 3d model of working mechanism. Secondly, import UG model using the parasolid format to ADAMS, do motion simulation analysis, and thus get the displacement, velocity and acceleration curve. Finally, establish parametric model in ADAMS and determine design variables and the objective function, do parameters optimization and calculation in ADAMS, thus realize the parametric design. |
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