Lathe bed structure optimization design method based on extension-grey correlation ideal solution
A technology of gray correlation and optimization design, applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., can solve the problems of parameter selection, difficulty in fully optimizing the bed structure, and failure to fully consider the comprehensive influence of the inside and shape of the bed, etc. , to improve the accuracy of the
Pending Publication Date: 2019-11-22
SICHUAN UNIV
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[0004] These studies only use the structural parameters of the machine tool to optimize the design, without selecting the parameters, and without comprehensively considering the comprehensive influence of the interior, shape and ribs of the bed on the bed, it is difficult to fully optimize the structure of the bed
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[0026] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0027] refer to figure 1 , figure 1 Shows the flow chart of the optimal design method of bed structure based on extenics-gray relational ideal solution; as figure 1 As shown, the method S includes steps S1 to S7.
[0028] In step S1, construct the original bed model and perform static finite element analysis and dynamic finite element analysis to determine the structure of the weak part of the bed stiffness, and design fo...
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The invention discloses a lathe bed structure optimization design method based on an extension-grey correlation ideal solution, and the method comprises the steps: carrying out the finite element analysis of a lathe bed, and calculating four types of rib plate structures; carrying out sensitivity analysis on the internal size and the external size of the lathe bed to determine test factors of an orthogonal test, and then determining evaluation indexes; setting values of rib plate thickness and lathe bed wall thickness of test factors, constructing a three-factor four-level orthogonal test table by adopting the test factors to carry out finite element simulation analysis, and selecting lathe bed alternative schemes formed by optimal parameter combination; adopting an improved analytic hierarchy process and an entropy weight method of an extension theory to combine and assign weight, and adopting a GC-TOPSIS method to select an optimal bed body structure scheme from bed body alternativeschemes based on Euclidean distance and grey correlation degree; and judging whether the comprehensive performance of the lathe bed structure scheme is improved relative to the original lathe bed structure or not, if so, outputting the lathe bed structure scheme, and otherwise, returning to the step of setting the thickness of the rib plate and the wall thickness of the lathe bed.
Description
technical field [0001] The invention relates to an optimization method of machining equipment, in particular to a bed structure optimization design method based on extenics-gray relational ideal solution. Background technique [0002] At present, in modern mechanical processing, machine tools have always been the core of the equipment manufacturing industry, and are expensive mechatronic precision equipment. Among the various components of the gantry milling machine, the bed is an important supporting part of the gantry milling machine, which plays a role in supporting various parts of the machine tool, and its weight accounts for 20% to 30% of the total weight of the machine. The static and dynamic performance of the bed structure Good or bad will directly affect the processing quality, processing accuracy and production efficiency of the gantry milling machine. Whether the internal rib structure design of the gantry milling machine bed is reasonable or not determines the ...
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Inventor 汪永超李波刘勇陈珂李强吴爱强
Owner SICHUAN UNIV