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Rapid identification method for measuring perpendicularity error of numerical control machine tool based on ball rod instrument

A technology of numerical control machine tools and identification methods, applied in the direction of instruments, program control, computer control, etc., can solve the problems of cumbersome operation process and long detection time, and achieve the effect of improving detection efficiency, simple detection procedure and shortening detection time

Inactive Publication Date: 2020-02-14
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0004] The existing method of using a ballbar to detect the accuracy of machine tools has problems such as cumbersome operation process and long detection time. Therefore, a method with simple operation, short detection time and simple instrument installation is proposed.

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  • Rapid identification method for measuring perpendicularity error of numerical control machine tool based on ball rod instrument
  • Rapid identification method for measuring perpendicularity error of numerical control machine tool based on ball rod instrument
  • Rapid identification method for measuring perpendicularity error of numerical control machine tool based on ball rod instrument

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] attached figure 1 Shown is a schematic structural diagram of a cradle-type five-axis CNC machine tool, and the method of the present invention is described by taking the cradle-type five-axis CNC machine tool as an example.

[0050] In step 1, according to the structure of the five-axis CNC machine tool, the installation position of the ballbar is determined, and the accuracy detection is carried out along the preset path by means of three-axis linkage, including steps:

[0051] Step 1.1. First, install the fixture base on the workbench, and install the magnetic base on the fixture base. Then, use the machine tool probe to determine the center of the workpiece tool cup as the origin of the workpiece coordinate system. Finally, move the spindle tool cup to the position of 100mm in the negative direction of the X axis, install one end of...

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Abstract

The invention, which belongs to the field of numerical control machine tool precision detection, discloses a rapid identification method for measuring a perpendicularity error of a numerical control machine tool based on a ball rod instrument, thereby solving problems of difficulty in mounting an experimental device, complex detection program, long detection time and the like in the conventional perpendicularity error detection method. With a three-axis linkage mode of a machine tool, a spherical motion trail of a ball rod instrument is designed to measure the perpendicularity error. Accordingto the invention, the numerical control machine tool error distribution geometrical characteristics are explained through an exponential product formula. Meanwhile, the detection path is optimized; the detection time is shortened; and the detection efficiency is improved.

Description

technical field [0001] The invention relates to the field of precision detection of numerical control machine tools, in particular to a fast identification method for measuring verticality errors of numerical control machine tools based on a ballbar. [0002] technical background [0003] With the development of society, the proportion of CNC machine tools in the manufacturing field is increasing, which puts forward higher requirements for the accuracy of CNC machine tools. At present, there are many instruments for testing the manufacturing accuracy of CNC machine tools, such as ballbar, R-test, laser interferometer and other instruments. Among them, due to the advantages of low cost, short detection time and simple operation, the ballbar is regarded as an ideal tool for precision detection. [0004] The existing method of using a ballbar to detect machine tool accuracy has problems such as cumbersome operation process and long detection time. Therefore, a method with simpl...

Claims

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Application Information

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IPC IPC(8): G05B19/401
CPCG05B19/401G05B2219/31304
Inventor 蒋晓耕柴旭贾经纬
Owner TIANJIN POLYTECHNIC UNIV
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