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Analysis method on basis of distribution characteristics of space machining error of numerical control machine tool

A technology of processing errors and distribution characteristics, applied in the analysis of geometric errors of multi-axis machine tools, based on the analysis of spatial error distribution characteristics, can solve problems in the field of deterministic error modeling

Active Publication Date: 2014-09-17
BEIJING UNIV OF TECH +1
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Problems solved by technology

However, these methods are mainly in the field of deterministic error modeling, and less in the field of random error modeling

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  • Analysis method on basis of distribution characteristics of space machining error of numerical control machine tool
  • Analysis method on basis of distribution characteristics of space machining error of numerical control machine tool
  • Analysis method on basis of distribution characteristics of space machining error of numerical control machine tool

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Embodiment Construction

[0112] The present invention takes a three-axis precision horizontal machining center as an example to verify the above-mentioned method for analyzing the spatial error distribution characteristics of a multi-axis CNC machine tool. The technical indicators of the three-axis precision horizontal machining center are shown in Table 1, and its mechanism diagram is shown in figure 1

[0113] Table 1 Technical indicators of precision horizontal machining center

[0114]

[0115] The forming system of the three-axis precision horizontal machining center mainly consists of an X-axis translation unit, a Y-axis translation unit, and a Z-axis translation unit. The present invention mainly considers the static error of the machine tool, so the machine tool has 21 geometric errors in total, including six basic errors of X, Y, Z, and B (Δx x Δy x Δz x Δα x Δβ x Δγ x Δx y Δy y Δz y Δα y Δβ y Δγ y Δx z Δy z Δz z Δα z Δβ z Δγ z ) and three-term squareness error (Δγ XY Δ...

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Abstract

The invention discloses an analysis method on the basis of distribution characteristics of a space machining error of a numerical control machine tool, belongs to the field of accuracy design of a machine tool and particularly relates to an analysis method on the basis of the distribution characteristics of the space error. On the basis of space geometric error deterministic modeling and geometric error measurement which are established by a multibody system and the matrix total differential and random process principle, a space error deterministic analysis model of a precision horizontal machining center is established and the distribution characteristics of a geometric error and the space machining error of the machine tool are analyzed. The invention discloses a novel machine tool design concept and fundamentally solves the problem of accuracy of the machine tool. Guiding suggestions also can be given to actual assembling and machining, so that output of the error is reduced, machining accuracy of the numerical control machine tool is improved and the problem of accuracy of the machine tool is fundamentally solved.

Description

technical field [0001] The invention relates to an analysis method for geometric errors of multi-axis machine tools, belongs to the field of machine tool precision design, and specifically relates to an analysis method based on spatial error distribution characteristics. Background technique [0002] The machinery manufacturing industry, as the production of mechanical equipment, provides technical equipment for the entire national economy. Its development level is one of the main symbols of the country's industrialization level. With the rapid development of modern science and technology, precision ultra-precision processing technology has become a modern machinery manufacturing industry. major trends in development. CNC machine tool is a high-precision, high-efficiency, high-tech modern electromechanical equipment. As the basis and core equipment of advanced manufacturing technology, it is more and more widely used in mechanical production, and restricts the development of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 程强赵宏伟冯秋男顾佩华章子玲
Owner BEIJING UNIV OF TECH
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