A method that can be used to detect the accuracy of the rotating axis of a five-axis linkage machine tool

Abstract

The invention discloses a method capable of being used for detecting the accuracy of a rotating axis of a five-axis linkage machine tool. The method comprises the following steps that (1) detection preparation is carried out, tools are prepared, and the tools comprise a detection ball, two magnet stands and a dial test indicator; (2) in a stand gauge-1, flat measurement is carried out, a compensation value i=((h-g) / 2)*cos(30) is obtained, and the i value is compensated to a machine tool parameter corresponding to a d value; (3), in a stand gauge-2, vertical measurement is carried out, a compensation value i=((j-k) / 2)*cos(30) is obtained, and the i value is compensated to a machine tool parameter corresponding to a c value; (4) repetition measurement testing is carried out, an error is approximated. Through the way, the method capable of being used for detecting the accuracy of the rotating axis of the five-axis linkage machine tool is simple and easy to operate, and does not need to rely on complex and high-cost special tools, does not need to rely on special macro program or special complex algorithm, and has low detection cost and reliable detection accuracy.

Description

technical field [0001] The invention relates to the technical field of precision detection of the rotation axis of a five-axis linkage machine tool, in particular to a method for detecting the precision of the rotation axis of a five-axis linkage machine tool. Background technique [0002] For high-precision five-axis machining centers, due to the addition of two rotating axes compared with ordinary three-axis machine tools, in order to control the cumulative error, higher requirements are placed on mechanical accuracy, especially rotational accuracy. [0003] When adjusting the accuracy, it is necessary to accurately measure the distance between two rotation axes (straight lines with different planes) and the positional relationship between the center of the spindle end face and the rotation axis, which must be actual measured values ​​rather than theoretical values, such as figure 1 , four accurate values ​​of a, b, c, and d need to be measured (the measurement methods of ...

AI Technical Summary

Problems solved by technology

[0005] However, for some machine tools with a small range of rotation angles, the rotation axis of the machine tool cannot actually turn to the ideal orthogonal angle

For example for image 3 The A+C machine tool shown, that is, the first rotation axis is the A axis, and the second rotation axis is the C axis (the C axis rotates on the basis of the A axis), since the rotation range of the A axis is only (-30 to +45 degrees) is far from reaching the range of (-90 to +90), so the actual value of the positional relationship between the A-axis and the C-axis cannot be directly measured

However, the error of theoretical calculation cannot meet the requirements of high precision, and the measurement requires more special tools or measurement software or special macro programs, which are costly and complicated to operate (for example, Siemens system needs to be equipped with 3D-Quick tool knife and special calibration program , but also equipped with automatic probes, the cost is very high)

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