Precision machine tool mass matching design method based on response surface and genetic algorithm

A technology of precision machine tools and genetic algorithm, applied in the field of quality matching design of precision machine tools based on response surface and genetic algorithm, can solve the problems of difficult to ensure optimal parameters, consume a lot of time, can not meet production requirements, etc., to improve machining accuracy and processing efficiency, the effect of reducing production costs

CN103995937AActive Publication Date: 2014-08-20TIANJIN UNIV
3 Cites 19 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-08-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a precision machine tool mass matching design method based on a response surface and a genetic algorithm. The method includes the steps that all parameters of a machine tool structure to be analyzed are extracted to set up a kinetic model of the machine tool structure; the structure of a complete machine tool is analyzed in a kinetic mode according to the kinetic model of the machine tool structure; taking the highest first-order inherent frequency of the complete machine tool and the highest dynamic stiffness in the X, Y and Z directions as the design objective, mass matching design is performed on big parts of all supporting structures; the dynamic properties, before and after mass matching optimization, of the structure of the whole complete machine tool are compared and analyzed through a finite element method, and effectiveness mass matching design is verified. Compared with the prior art, the precision machine tool mass matching design method can efficiently and rapidly estimate the dynamic properties of the structure of the whole complete machine tool in the design stage of a machine tool scheme and can plan the optimum mass relation among the big parts of all the supporting structures with the optimum dynamic properties of the structure of the whole complete machine tool as the objective; the design method is suitable for mass matching design for the big parts of all the supporting structures of the precision machine tool and plays a good role in guiding the mass design for the big parts of the supporting structures of the machine tool.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a quality planning method for supporting large parts in the structural scheme design of a precision machine tool, in particular to a quality matching design method for a precision machine tool based on a response surface and a genetic algorithm. Background technique

[0002] The dynamic performance of the machine tool has an important impact on the machining accuracy and efficiency of the machine tool. The traditional machine tool design supports the quality of large parts based on past experience. If the design is blind, it will not be conducive to ensuring the dynamic performance of the machine tool.

[0003] At present, the quality design of precision machine tools supporting large parts is still limited to the single-piece optimization method. Its essence is that the designer repeatedly modifies the mass of a single large piece based on the design experience, arranges a limited number of parameters for numerical simulation...

Examples

Embodiment Construction

[0027] In order to better understand the content, features and effects of the present invention, the technology of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 Shown is the flow chart of the present invention.

[0029] Step 1: Determine the parameters required for the precision machine tool to be analyzed

[0030] The parameters required by the machine tool to be analyzed are the external dimensions of the supporting large part, the machining space of the machine tool, the X, Y, Z three-way travel of the machine tool, and the parameters of the joint surface, excluding complex internal designs such as the wall thickness planning of the large part and the layout of ribs . The required geometric parameters of the machine tool to be analyzed are as follows: figure 2 As shown, among them, the overall dimension of the bed a 2 、c 1 、d 1 , the overall dimension of the sliding table...