Quality function deployment-based machine tool cross beam design scheme optimization method
A quality function development and design scheme technology, applied in the direction of design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of lack of theoretical basis and difficulty in meeting the specific needs of CNC machine tools, so as to reduce design costs and shorten the development cycle Effect
Active Publication Date: 2018-08-28
NANTONG UNIVERSITY
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Problems solved by technology
The scheme design of traditional beams mostly adopts empirical design or analogy design, lacks corresponding theoretical basis, and has a certain degree of conservatism and blindness, which makes it difficult to meet the specific needs of the market for CNC machine tools
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[0073] The present invention selects the optimization of bridge-type gantry milling machine crossbeam design as an embodiment, and the implementation process is as follows figure 1 shown. Firstly, the house of quality of beam design scheme is constructed, and then fuzzy linear regression modeling is performed on the data in the house of quality to obtain the optimal target value of beam design scheme. Then, the ZOGP model is constructed by using the 0-1 objective programming method to select the optimal scheme closest to the optimal target value from the beam candidate design schemes.
[0074] The specific implementation process of the beam design scheme optimization of the bridge type gantry milling machine is as follows:
[0075] like figure 2 As shown, on the basis of research and consultation and internal data analysis, the requirement for obtaining the beam design scheme is the machining accuracy R 1 , Processing efficiency R 2 , lightweight R 3 , vibration resistan...
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The invention discloses a quality function deployment-based machine tool cross beam design scheme optimization method. The method comprises the following steps of calculating a relative weight of a design demand by applying an analytic hierarchy process on the basis of determining the design demand of a cross beam in research and consultation, optimizing a design element parameter combination to make candidate cross beam schemes, performing three-dimensional modeling to obtain an engineering characteristic simulation value of the cross beam, determining a grade of cross beam design scheme conformity, and finishing construction of a quality house; investigating a relationship between the design demand of the cross beam and an engineering characteristic index by applying quality function deployment (QFD), establishing a function relationship between the design demand of the cross beam and the engineering characteristic index by utilizing a fuzzy linear regression theory, and determiningoptimal target values of the cross beam design schemes; and making an optimal selection in the candidate cross beam schemes by adopting a 0-1 target planning model. According to the method, for customer demands, the design demand of the cross beam is organically fused with the optimization design of the cross beam schemes, so that the product research and development cycle is shortened and the design cost is reduced; and the method has very high engineering practicality.
Description
technical field [0001] The invention belongs to the field of machine tool design, and relates to a method for optimizing the design scheme of key parts of the machine tool, in particular to a method for optimizing the design scheme of the crossbeam of the machine tool based on quality function deployment. Background technique [0002] As the main part of the machine tool, the beam of the CNC machine tool has a direct impact on the performance of the whole machine, the geometric accuracy of the workpiece and the surface processing quality. The scheme design of traditional beams mostly adopts empirical design or analogy design, lacks corresponding theoretical basis, and has a certain degree of conservatism and blindness, which makes it difficult to meet the specific needs of the market for CNC machine tools. [0003] In recent years, with the widespread use of structural optimization software, especially finite element software, and the development of modern mechanical design ...
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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 邱自学高志来袁江王璐璐陶涛
Owner NANTONG UNIVERSITY