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Topological optimization design method for ram structure of friction stir welding robot

A technology of friction stir welding and topology optimization, which is applied in the fields of instrumentation, calculation, electrical and digital data processing, etc., can solve the problems of mechanism reduction, stability and less attention to structure optimization, and achieves convenient size optimization and wide application range. , the effect of a solid mathematical theoretical foundation

Active Publication Date: 2019-12-17
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Problems solved by technology

However, it has been found through research that a large number of experts and scholars are currently focusing on the process effect, and pay less attention to the reduction, stability and structural optimization of the entire mechanism.

Method used

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  • Topological optimization design method for ram structure of friction stir welding robot
  • Topological optimization design method for ram structure of friction stir welding robot
  • Topological optimization design method for ram structure of friction stir welding robot

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] Such as figure 1 As shown, the welding body part of the friction stir welding robot includes a base 1, a column 2, a ram 3, a turntable 4 and other structures, wherein the column 2 as the Y axis is located between the base 1 of the X axis and the ram 3 of the Z axis. Since the column 2 has many connection positions with other large-scale components, its load situation is relatively complicated. The two ends are also connected to the saddle 5 on the ram 3 through the guide rail slider pair 6 and the ball screw pair, and the above connection structures are known technologies in the art.

[0036] This invention is mainly aimed at optimizing the structure of the ram 3 of the friction stir welding robot. details as follows:

[0037] Step 1: Stress analysis of the structure of the ram 3 to determine the stiffness condition of the ram 3.

[0038] The fric...

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Abstract

The invention relates to the field of friction stir welding robot structure analysis, in particular to a topological optimization design method for a ram structure of a friction stir welding robot, which comprises the following steps of: 1, analyzing the stress of the ram structure, and determining a ram rigidity condition; 2, conducting topological optimization on the ram structure, specifically,finite element modeling is conducted through software, constraint processing is applied during finite element modeling according to the rigidity condition determined in the step 1, then topological optimization is conducted on the finite element model through software and an SIMP variable density method, and a topological optimization configuration of the ram is obtained; and 3, performing size optimization on the ram topological optimization configuration obtained in the step 2 by utilizing software and adopting an approximate model method. Through topological optimization, the mass of the ram is greatly reduced, meanwhile, it can be guaranteed that the deformation of the tail end of the ram is slowly increased, and the purpose of rapidly improving the fundamental frequency of the ram isachieved.

Description

technical field [0001] The invention relates to the field of structural analysis of a friction stir welding robot, in particular to a topology optimization design method for a ram structure of a friction stir welding robot. Background technique [0002] Friction stir welding technology is a new type of continuous solid-phase joining technology. Once it appeared, it caused a great sensation in the field of welding. It is considered to be the most attractive and potential joining technology since the advent of laser welding. Due to the unique advantages of friction stir welding itself, more and more scientific research institutions are attracted to enter into the research work in this field, which makes the friction stir welding technology develop rapidly. [0003] At present, domestic and foreign research on friction stir welding mainly focuses on the friction stir welding process of different materials and the mechanical properties of the joint structure, the flow behavior o...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 骆海涛周维佳刘玉旺张伟于长帅刘广明陈宁
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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