Assessment method for geometric errors of five-axis tool machine

A technology of tool machinery and geometric error, which is applied in the evaluation field that can measure and calculate the geometric error of five-axis tool machinery. And other issues

Inactive Publication Date: 2013-07-17
PRECISION MACHINERY RES & DEV CENT
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Problems solved by technology

[0003] Due to the complex structure of the five-axis machine tool itself, it is very difficult to accurately measure some geometric error items. Therefore, the measurement standard procedure of the five-axis machine tool, such as ISO/10791-6, is to use a measuring tool, such as the R-Test measuring tool, to carry out After the measurement of the geo

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  • Assessment method for geometric errors of five-axis tool machine
  • Assessment method for geometric errors of five-axis tool machine
  • Assessment method for geometric errors of five-axis tool machine

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Embodiment Construction

[0049] The technical contents and features of the present invention will be described in detail below in conjunction with the accompanying drawings through the enumerated embodiments, wherein:

[0050] figure 1 A schematic diagram of the model definition for the geometric error of the X linear motion axis of the present invention;

[0051] figure 2 A schematic diagram of the model definition for the geometric error of the C rotation axis of the present invention;

[0052] image 3 A schematic diagram of the coordinate system formed by erecting the R-test measuring tool on the five-axis tool machine for the present invention;

[0053] Figure 4 Utilize R-test gauge to measure the schematic diagram of gained assembly error for the present invention;

[0054] Figure 5 It is a comparison diagram of the error value after measurement and calculation by using the K4 path in a preferred embodiment of the present invention.

[0055] see figure 1 , the geometric error of tool ...

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Abstract

The invention discloses an assessment method for geometric errors of a five-axis tool machine, and the assessment method can be applied to a five-axis processing machine. The assessment method includes the steps that an R-test measuring tool with a probe and a standard ball is arranged on the five-axis machining machine, the sphere center of the standard ball serves as the original point of a reference coordinate system, a five-axis synchronous movement path serves as a measuring path to measure the assembly error of the five-axis tool machine, the assembly error obtained through measuring and a known mechanism parameter of the five-axis tool machine are substituted in a geometric error model, and values of 11 items of geometric errors of the five-axis tool machine are obtained through solving by using a method of least square. The assessment method has the advantages of being fast and accurate.

Description

technical field [0001] The present invention is related to tool machinery, in particular to an evaluation method capable of measuring and calculating the geometric error of five-axis tool machinery, which has the advantages of simple construction and high accuracy. Background technique [0002] The error sources of tool machinery are mainly divided into structural errors (Structurally-induced Errors), drive errors (Driven-induced Errors) and static errors (Quasi-static Errors), of which static errors account for about 70% of tool mechanical errors, and static The main source of errors is geometric errors (Geometric Errors). In other words, accurate measurement of geometric errors of tool machinery is a key step to improve tool machining accuracy. [0003] Due to the complex structure of the five-axis machine tool itself, it is very difficult to accurately measure some geometric error items. Therefore, the measurement standard procedure of the five-axis machine tool, such as ...

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Application Information

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IPC IPC(8): G01B21/00G01B21/02
Inventor 徐永源方天青吴仲伟张平升
Owner PRECISION MACHINERY RES & DEV CENT
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