Optimization design method for machine body structure of mechanical press
A technology of mechanical press and optimized design, applied in the field of machinery, can solve problems such as poor design effect of mechanical press frame, meet the requirements of low-cost manufacturing and high-precision, good manufacturability and high-rigidity design, and reduce size Effects of optimization and shape optimization design cycles
Pending Publication Date: 2021-11-23
WUHAN UNIV OF TECH
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Problems solved by technology
[0005] One of the purposes of this application is to provide a method for optimizing the design of the machine body structure of a mechanical press, aiming at improving the poor design effect of the existing mechanical press frame
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[0072] Please refer to figure 1 , with reference to Figure 2 to Figure 12 , the present application provides a method for optimizing the structure of a mechanical press machine body, which is described in conjunction with a design example of a 2500KN mechanical servo press frame 1; the design method mainly includes the following steps:
[0073] S1, extracting the original three-dimensional model of the mechanical press frame 1, and cleaning the tiny structure of the original three-dimensional model of the frame 1;
[0074] S2, static analysis is performed on the connecting rod structure of the mechanical press, and the force value on the frame 1 at the joint between the connecting rod structure and the frame 1 is obtained;
[0075] S3, using the force value on the frame 1 as the force boundary condition, performing finite element static analysis on the frame 1 to obtain the deformation parameters of the frame 1;
[0076] S4, filling the original three-dimensional model of r...
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The invention provides an optimization design method for a machine body structure of a mechanical press. The optimization design method comprises the following steps: S1, extracting a three-dimensional model of a rack; S2, conducting statics analysis on the connecting rod structure to obtain the stress on the rack at the hinged position of the connecting rod and the rack; S3, carrying out finite element statics analysis on the rack by taking the stress at the hinged part as a stress boundary condition to obtain rack deformation parameters; S4, performing filling processing on the original rack to establish an optimization space, establishing a topological optimization model of the rack by taking the rack deformation parameters as one of constraint conditions, and performing topological optimization; and S5, extracting local step features, and carrying out filling design on the rack by using three discrimination methods and four filling methods. By means of the method, good manufacturability and high-rigidity design of the rack are achieved, and the requirements for low-cost manufacturing and high precision are met.
Description
technical field [0001] The present application relates to the field of machinery, and in particular to a method for optimal design of a machine body structure of a mechanical press. Background technique [0002] Mechanical presses are one of the most important categories of machine tools used to realize forging and stamping processes, and the demand for high-precision components in recent years has made the forming accuracy of servo mechanical presses a great challenge. [0003] During the working process, the forming load is finally applied to the frame as the main load-bearing part of the press to deform it, and the deformation of the frame will affect the forming accuracy of the parts. Therefore, the high rigidity of the frame is a prerequisite for high-precision forming. The traditional design process of the press frame structure relies heavily on the design experience of the designer. Even if the rigidity of the designed frame meets the requirements, it still results i...
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IPC IPC(8): G06F30/17G06F30/23G06F111/10G06F119/14
CPCG06F30/17G06F30/23G06F2111/10G06F2119/14
Inventor 胡志力华林汪锐
Owner WUHAN UNIV OF TECH