Multi-sensor coordinate fusion calibration method of 3D curved glass measuring instrument

Abstract

The invention provides a multi-sensor coordinate fusion calibration method of a 3D curved glass measuring instrument. The method comprises the following steps: 1, a measuring head aligning method; 1.1, an optical measuring head rotation center and standard ball concentricity adjusting method; 1.2, an optical measuring head to pass through a standard ball vertex adjusting method in the vertical direction; 1.3, determination method of the rotation radius of the optical measuring head; and 2, an optical measuring head. Coordinate system fusion is simple, and errors caused by non-uniform radius ofthe rotating shaft are reduced; non-contact measurement is achieved; and scanning efficiency is high.

Description

technical field [0001] The invention relates to the field of industrial measurement, in particular to a multi-sensor coordinate system position fusion calibration method in the process of measuring all parameters such as the profile, flatness, two-dimensional size, and silk screen position of transparent curved glass. Background technique [0002] At present, most of the full-parameter detection methods for transparent curved glass on the market use three-coordinate workpiece rotation sensors for measurement. The main disadvantages are low efficiency, large rotation radius, and inconvenient silk screen position measurement; [0003] Current technical solution: [0004] Three coordinates plus non-contact probe and image function, the workpiece is clamped on the rotary table, the main disadvantage is that the coordinate system of the workpiece is rotating, it is difficult to be consistent with the X, Y, Z coordinate system of the instrument; and the radius of rotation when the...

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Problems solved by technology

[0004] Three coordinates plus non-contact probe and image function, the workpiece is clamped on the rotary table, the main disadvantage is that the coordinate system of the workpiece is rotating, it is difficult to be consistent with the X, Y, Z coordinate system of the instrument; and the radius of rotation when the length of the workpiece is different The measurement error introduced by different institutes is relatively large;

[0006] The efficiency of three-coordinate measurement or contact probe is low, and the point-seeking scanning measurement is carried out according to the point designed by the program during measurement, and the scanning efficiency is low;

[0007] Contact measurement may cause damage to the surface of the product (for products with soft materials, contact measurement is prone to scratches on the surface);

[0008] The probe fusion of the current measurement method is difficult to calibrate and fuse the probe center, workpiece rotation center and two-dimensional image coordinate system;

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