Body optimization design method of light-weight large-stiffness fine blanking press machine
A press with high stiffness technology, applied in the field of fine blanking presses, can solve the problems of huge design cost, long cycle, poor dynamic characteristics, etc., and achieve the effect of reducing cycle and cost, low cost, and reliable static indicators
Active Publication Date: 2012-11-07
WUHAN UNIV OF TECH
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Problems solved by technology
It may lead to problems such as excessive mass, insufficient strength and stiffness of key parts, and poor dynamic characteristics.
The traditional design process not only makes the product design cycle longer, but also the design cost is huge
Method used
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[0023] In order to better understand the optimization method of the present invention, the specific steps will be described in detail below in conjunction with the accompanying drawings:
[0024] A method for optimizing the design of a light-weight and high-rigidity fine-blanking press body, which includes the following steps:
[0025] 1) Rough design of the body of the fine blanking press: find the fine blanking pressure according to the nominal pressure required by the rough design, slider stroke, main stroke adjustment, closing height, maximum opening height, and worktable size (see Table 1) A rough CAD model of the fuselage (that is, a rough design fuselage);
[0026] The material of the body of the fine blanking press is carbon steel, the grade is Q235-A, the body structure adopts a welded closed body structure, the body length (L) × width (G) × height (H) = 2490mm × 2180mm×4485mm, the distance (H0) from the upper worktable to the lower worktable is 2375mm, the main desi...
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The invention belongs to the technical field of fine blanking press machines, and particularly relates to a body optimization design method of a light-weight large-stiffness fine blanking press machine. The body optimization design method is characterized by comprising the following steps: (1) coarsely designing the body of the fine blanking press machine to obtain a coarse CAD (computer aided design) model; (2) determining whether the coarse CAD model of the step (1) can be optimized according to the strain cloud picture and the stress cloud picture of the coarse-designed body, and carrying out the next step if the coarse CAD model can be optimized; (3) optimizing the stiffness and the natural frequency of the coarse-designed body to find the optimization space of the stiffness and the natural frequency; (4) optimizing a plurality of targets of the coarse-designed body by a compromise programming method; (5) optimizing the size of the machine body optimized by topology; and (6) optimizing the size of the body model of the step (5) by an adaptive response surface method to obtain the optimized body model of the fine blanking press machine. The method can ensure reliable dynamic indexes and static indexes, and can lower the cost maximally.
Description
technical field [0001] The invention belongs to the technical field of fine-blanking presses, and in particular relates to an optimal design method for a fuselage of a lightweight and high-rigidity fine-blanking press. Background technique [0002] As a precision forming technology, fine blanking has the characteristics of high quality, high efficiency and low consumption. It has been widely used in the fields of automobiles, motorcycles, instruments and meters, light industrial machinery, household appliances and office equipment. Large fine blanking presses are essential basic manufacturing equipment in the fields of automobiles, aerospace, weapons and high technology, and one of the major equipment that must be mastered independently to ensure economic and national defense security. The research and development of fine blanking equipment with a large tonnage of more than 10,000KN is in a blank state in China, and the maximum tonnage of imported fine blanking presses in Ch...
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IPC IPC(8): G06F17/50
Inventor 华林胡俊伟兰箭赵玉民毛华杰
Owner WUHAN UNIV OF TECH