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Error Vector Modeling Method for Rotation Axis Perpendicularity Error

A technology of error vector and modeling method, which is applied in the field of CNC machine tools and can solve problems such as the verticality error of the rotating axis

Active Publication Date: 2021-04-27
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to address the above-mentioned deficiencies in the prior art and provide an error vector modeling method for the verticality error of the rotating shaft to solve or improve the above-mentioned problems

Method used

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  • Error Vector Modeling Method for Rotation Axis Perpendicularity Error
  • Error Vector Modeling Method for Rotation Axis Perpendicularity Error
  • Error Vector Modeling Method for Rotation Axis Perpendicularity Error

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Embodiment Construction

[0084] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0085] According to an embodiment of the present application, refer to figure 1 , the error vector modeling method of the rotation axis perpendicularity error of this scheme, including:

[0086] S1. According to the definition of verticality error and the nature of the motion of the rotary axis, the influence of the verticality error on the motion of the rotary axis is analyzed;

[0087] S2. Analyze the definition of the v...

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Abstract

The invention discloses an error vector modeling method for the perpendicularity error of a rotating shaft, comprising S1, analyzing the influence of the perpendicularity error on the movement of the rotating shaft according to the definition of the perpendicularity error combined with the motion properties of the rotating shaft; S2, obtaining the A axis and the B axis and C-axis perpendicularity error; S3. According to the motion properties of different rotation axes, construct the ideal exponential motion matrix of A-axis, B-axis and C-axis; S4. According to the distribution of perpendicularity errors of different rotation axes, use the exponential product theory to establish A-axis, B-axis The actual index motion matrix under the influence of axis and C-axis perpendicularity errors; S5, according to the relationship between the motion axis error matrix, the ideal motion matrix and the actual motion matrix, constructs the verticality error transformation matrix of different rotation axes; S6, the A axis, The squareness error transformation matrix of the B axis and the C axis is compared with the error matrix of the basic geometric error item of the motion axis to obtain the influence of the squareness error of different rotation axes; S7, establishing the error vector of the squareness error of different rotation axes.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to an error vector modeling method for the verticality error of a rotating shaft. Background technique [0002] Five-axis CNC machine tools have been widely used in various fields such as aerospace, aviation, navigation, automobiles, and national defense. The high-precision manufacturing of five-axis CNC machine tools is an important symbol to measure a country's advanced manufacturing level. High precision is one of the trends in the development of CNC machine tools. The rotary axis is an important functional component of a five-axis CNC machine tool. The verticality error of the rotary axis has become one of the important components of the geometric error item of the machine tool and one of the key factors affecting the accuracy of the machine tool. In the process of machine tool error modeling, the geometric nature of the rotation axis perpendi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
Inventor 付国强施景皓高宏力鲁彩江谷腾达贡宏伟
Owner SOUTHWEST JIAOTONG UNIV
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