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Evaluation Method of Machine Tool Beam Design Scheme Using Fuzzy AHP

A technology of fuzzy hierarchical analysis and design schemes, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as machine tool beam structure design schemes that do not consider cost and processing efficiency, and achieve shortened research and development cycles and easy programming The effect of improving the systemization and evaluation system

Active Publication Date: 2021-04-09
NANTONG UNIVERSITY
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Problems solved by technology

When considering the performance of the beam scheme, the static and dynamic performance of the beam is only used as the evaluation index, and the improvement of the static and dynamic performance is one-sidedly pursued, and the impact of customer demand indicators such as cost and processing efficiency on the selection of the machine tool beam structure design scheme is not considered. to satisfy the market's needs

Method used

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  • Evaluation Method of Machine Tool Beam Design Scheme Using Fuzzy AHP
  • Evaluation Method of Machine Tool Beam Design Scheme Using Fuzzy AHP
  • Evaluation Method of Machine Tool Beam Design Scheme Using Fuzzy AHP

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Embodiment

[0057] The present invention takes the evaluation of the beam design scheme of the bridge type gantry milling machine as an example, and the implementation process is as follows figure 1 shown. On the basis of research and consultation and internal data analysis, the requirement of the beam design scheme is obtained as the machining accuracy R 1 , Processing efficiency R 2 , lightweight R 3 , vibration resistance R 4 , Static performance R 5 , cost R 6 , Dimensions R 7 , determined by beam mass E 1 , external volume E 2 , maximum deformation E 3 , the maximum equivalent stress E 4 , the first-order natural frequency E 5 As the evaluation index of beam engineering characteristics, the design elements forming beam design plan are beam structure layout, rib structure, rib thickness, and guide rail type, such as figure 2 (a) and (b) shown. The combination of design elements was screened, the candidate scheme of the beam was determined, and the three-dimensional modeli...

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Abstract

The invention discloses a method for evaluating the design scheme of the crossbeam of a machine tool using fuzzy hierarchical analysis, which comprises the following steps: determining the design requirements of the crossbeam through investigation and consultation, mapping it to the engineering characteristic index of the crossbeam, and converting it into design elements of the crossbeam; screening the design elements Combining parameters to formulate beam candidate schemes, and conduct three-dimensional modeling to obtain beam engineering characteristic simulation values; establish beam design evaluation system, use fuzzy hierarchical analysis to establish fuzzy judgment matrix for relative weight calculation, and solve beam engineering characteristic indicators for each The degree of differential influence of the scheme can be used to obtain the final score of the beam design scheme and determine the optimal scheme. The invention pays attention to the needs of customers, comprehensively considers the factor index weights that affect the evaluation of beam design schemes, effectively solves the problem of multi-level and fuzzy comprehensive evaluation of beam design schemes, and has the characteristics of flexibility, simplicity, and easy programming.

Description

technical field [0001] The invention belongs to the field of machine tool design, and relates to an evaluation method for the design scheme of key parts of the machine tool, in particular to an evaluation method for the design scheme of the crossbeam of the machine tool using fuzzy hierarchical analysis. Background technique [0002] As an important part of the CNC machine tool, the beam of the machine tool bears the weight of key components such as slides, rams, and spindles. The deformation and vibration of the beam caused by its own gravity and external loads will directly affect the overall performance of the machine tool. Affect the geometric accuracy and surface processing quality of the workpiece. The traditional beam design mostly relies on empirical design to process the actual object first, and then assemble it on the machine tool for testing. Based on various test results, it judges the superiority of the performance of the structural solution, determines the modi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/17G06F119/14
CPCG06F30/17G06F30/23
Inventor 邱自学高志来袁江陶涛王璐璐
Owner NANTONG UNIVERSITY
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