The Research And Design For New Model Beam Of Large Planomiller

Large planomiller has the features of high efficiency, good rigidity, large span, high accuracy. and has a pivotal position in the machine tool industry. With the development of science and technology, The design requirements of the machine tool is higher. The limitations of the traditional design methods are gradually emerging, The development and application of the new method is more important. Under the background of this industry, This paper, on the basis of a certain type of large gantry milling machine, with the goal of improving the lightweight design and the static and dynamic stiffness, designed the new type of beam structure by the meathods of structure bionic, topology optimization and multi-objective optimization. The following is the main research contents:(1) Overviewed of the machine tool industry development situation at home and abroad, This paper studied and researched the bionic theory, topology optimization theory, multi-objective optimization theory, fuzzy optimization theory and analytic hierarchy theory used.(2) In the structure design of the beam, this paper designed from two aspects of shape and inner ribs. To the shape,we made some procedures by APDL language for the ESO method. and determined the shape design of the beam by the topology optimization.For the aspects of inner ribs, In this paper, application of means is structure bionic. Through similarity evaluation we made sure the victoria regia and bamboo as the bionic object. we studied their Structure and mechanical properties, summarized their configurational characteristics for the structural design of stiffened plates applied to following.(3)In this paper, we got some design alternatives through bionic structure, In order to avoid the dimension parameters of match quality impacting on the results of optimization, This may happened the case,which excellent project with bad match quality is worse than bad project with excellent match quality. In this paper, multi-objective optimization of each scheme were carried out firstly, Ensure that each scheme is excellent in each structure design, then put them together for multi-objective optimization, and select the best design scheme from two aspects of performance and technology.(4) In order to further improve the precision grade of the machine tool, This paper started from the positional accuracy of the beam. studied the straightness and angular deviation of tool path when bearing parts moving on the beam, got the deformation data of different position on the rail surface, used MATLAB software for data processing, and Simulated the rail surface deformation compensation of the beam, The results showed that precision had a very good improve.