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A Visual Measuring Device for Dynamic Contour Error of CNC Machine Tool

A technology of dynamic profile and visual measurement, which is applied in the direction of measuring/indicating equipment, metal processing machinery parts, metal processing equipment, etc., can solve the problems of cumbersome measurement work and the inability to apply dynamic profile errors of machine tools, etc., and achieve low cost, high measurement efficiency, The effect of convenient operation

Active Publication Date: 2020-04-24
DALIAN UNIV OF TECH
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Problems solved by technology

However, this method belongs to contact measurement. If there is an untouched area, local measurement needs to be performed again, which makes the measurement work cumbersome, and the measurement trajectory is fixed, so it cannot be applied to the measurement of the dynamic contour error of the machine tool under any trajectory.

Method used

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  • A Visual Measuring Device for Dynamic Contour Error of CNC Machine Tool
  • A Visual Measuring Device for Dynamic Contour Error of CNC Machine Tool
  • A Visual Measuring Device for Dynamic Contour Error of CNC Machine Tool

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Embodiment Construction

[0012] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0013] The structure of the visual measurement device for dynamic contour error of CNC machine tools is shown in the attached figure 1 , 2 , 3, and 4, the device consists of a flexible target and an integrated measurement tooling. Among them, the light source is the constant bright backlight of wordop company, the model is FQG2-260×260, the positioning reference is a photolithographic glass plate of 260mm×260mm×5mm, and the monocular camera is a high frame rate and large resolution industrial camera model EoSens25CXP.

[0014] The flexible target includes a ball head platform 3 , a target base 2 with an equilateral triangle structure, a target ball 1 installed on the target base, target ball fixing bolts 17 and studs 4 . In this embodiment, three target balls 1 are used, and the number of target balls can be appro...

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Abstract

The invention discloses a dynamic contour error visual measuring device for a numerical control machine tool, belongs to the technical field of computer vision measurement, and relates to an auxiliarymatching device for measuring a dynamic contour error of the numerical control machine tool by using vision. The dynamic contour error visual measuring device is composed of a flexible target and anintegrated measuring tool. The flexible target includes a ball head holder, a target base of an equilateral triangle structure, target spheres mounted on the target base, target sphere fixing bolts and a double-end stud. In the integrated measuring tool, a positioning reference is mounted at the upper end of a clamp body, and the lower end of the clamp body is fixedly connected to a machine tool C-axis worktable by fastening bolts and cushion blocks. The dynamic contour error visual measuring device adopts an integrated clamp combination of the flexible target and the special positioning reference, and the integrated function of camera calibration and position-orientation measurement is achieved. Only single installation can completely record the motion information of a five-axis linkage trajectory of the machine tool, so that the space measurement of the contour error under any trajectory of the machine tool can be realized quickly, conveniently and effectively. The operation is convenient, the measurement is efficient, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of computer vision measurement, and relates to an auxiliary supporting device for visually measuring the dynamic contour error of a numerical control machine tool. Background technique [0002] With the continuous improvement of performance requirements for complex parts in the field of high-precision technology and high-end equipment industry, five-axis CNC machine tools have become an important processing method for complex parts due to their high-efficiency production, high-precision machining, and flexible control. However, the dynamic contour error caused by multi-axis linkage error accumulation and servo system lag greatly affects the machining performance of the machine tool. In order to ensure the high-quality and efficient machining of CNC machine tools, the regular inspection and compensation of machine tool errors are particularly important. In recent years, the commonly used error detection meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/00B23Q17/22
CPCB23Q17/00B23Q17/22
Inventor 刘巍潘翼李肖王福吉贾振元马建伟
Owner DALIAN UNIV OF TECH
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