| In this thesis, the structure and the dynamic characteristic of linkless feed mechanisms is studied. The research of structure device and movement characteristics have been made to verify the rationality of the entire structure through simulation analysis in this system,which can complete the pre-research of the goal.Firstly, the structure of the new linkless feed mechanisms is briefly summarized according to the requirement and combined with the existing relevant technology, which provide the foundation of the principle scheme. Then the layout of structure, which consists of line module, fan-shape module, is presented at the same time. The model of each module and the connection part among modules were built by three-dimensional software, and the chain transmission is briefly analyzed.Secondly, the simulation model for linkless feed mechanism is built with Multi-body system dynamics theory, then the dynamic simulation analysis under different firing rate has been carried on, including line unit, fan-shape unit and sat unit. Under the conduction of no load and load, the stability comparative analysis is carried on. The adaptability of the structure is analyzed at the dynamic change of high and low beam angle, which verify the accuracy of the transfer. And the simulation result shows that the system module is feasible.Finally, the stiffness and strength of important parts are analyzed by finite element method in order to show that the mechanism is reliable based on the validated analysis data. The influence of the different number teeth of pluck wheel is made a comparative analysis. Under different rotational speed, the influence of the process transition is caparisoned and analysis.The analysis of this thesis has reference value for the perfection of subsequent principle prototype and the improvement of structure design.
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