Blocked analysis method for large-size machine tool structural member

A technology of large-scale structural parts and analysis methods, which is applied in special data processing applications, instruments, adaptive control, etc., and can solve problems such as difficult transportation, high quality, and environmental pollution

Inactive Publication Date: 2018-01-16
BEIJING UNIV OF TECH
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Problems solved by technology

However, various large or super-large structural parts in heavy-duty CNC machine tools lack consideration of related factors such as the manufacture, transportation, and assembly of structural parts in the design. , with a total length of more than ten meters, its span will reach more than ten meters, and its mass will reach hundreds of tons or more
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Method used

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  • Blocked analysis method for large-size machine tool structural member
  • Blocked analysis method for large-size machine tool structural member
  • Blocked analysis method for large-size machine tool structural member

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Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Step 1: Establish the joint surface stiffness model based on the three-dimensional fractal contact theory, and identify the normal stiffness and tangential stiffness of the high-strength bolt bolted joint surface;

[0017] Starting from the consideration of the stiffness of the joint surface on the dynamic performance of the large structural part (beam) of the ma...

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Abstract

The invention discloses a blocked analysis method for a large-size machine tool structural member. The method comprises the steps of establishing a combining surface rigid model based on a three-dimensional fractal contact theory, and identifying a normal stiffness and lateral stiffness; performing parameter modeling of the large-size structural member (crossbeam) based on a definite element method, and integrating the identified normal stiffness and the lateral stiffness into a large-size structural member three-dimensional model; and utilizing a parameter blocked designing method and a particle swarm optimization method, optimizing the dynamic performance of the large-size structural member (crossbeam), and designing the optimized large-size structural member (crossbeam) three-dimensional model by means of an optimization result. A re-manufacturing factor is taken into a designing period so that the structural member not only can satisfy function and performance requirement of a product and furthermore facilitates manufacturing, transportation, assembling and re-manufacturing. The blocked analysis method for the large-size machine tool structural member is deeply understood, thereby better guiding designing and application of the large-size machine tool structural member.

Description

technical field [0001] The invention provides a block-based analysis method for large-scale machine tool structural parts, which belongs to the design field of heavy-duty and super-heavy numerical control machine tool large-scale structural parts. Background technique [0002] There are still some deficiencies in the overall structural design of heavy-duty CNC machine tools. The analysis of large-scale mechanical structural parts of heavy-duty CNC machine tools has always been an important content of structural analysis. Large-scale structural parts are an important part of construction machinery, which is related to the appearance quality of construction machinery. Due to the large size and high processing precision requirements, the production of large structural parts has always been a problem faced by enterprises. However, various large or super-large structural parts in heavy-duty CNC machine tools lack consideration of related factors such as the manufacture, transport...

Claims

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Application Information

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IPC IPC(8): G05B13/04G06F17/50
Inventor 程强齐宝宝刘志峰闫国彬
Owner BEIJING UNIV OF TECH
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