A method for measuring the coordinates of a 3D curved glass CNC machining center

Abstract

The invention relates to a method for measuring coordinates of a CNC machining center of 3D curved glass, which uses a spherical probe to measure the X / Y / Z coordinates of the machining center on the inner arc surface of 3D curved glass, which can effectively solve the problems caused by product heat bending The problem caused by the deformation of the glass frame can improve the dimensional accuracy of the processed product, especially in the processing of mobile phone 3D curved screens with unequal heights on four sides, which can well control the precision of the length, width and height of the mobile phone 3D curved glass, and can greatly Local production yield.

Description

technical field [0001] The invention belongs to the technical field of 3D curved glass processing, and in particular relates to a method for measuring the coordinates of a CNC machining center of 3D curved glass. Background technique [0002] Glass mobile phone covers are rapidly iterating, and 3D curved glass has gradually become the protagonist. Although glass has only been used in mobile phone covers for a few years, its replacement speed is amazing, from 2D glass + metal, 2D glass + 2D glass, 2.5D glass + 2.5D glass, 2.5D glass + 3D glass to 3D glass + 3D glass are dazzling, and 3D glass is becoming the protagonist of the mobile phone cover. [0003] In order to avoid homogenization and stimulate consumers' purchase demand, smartphone manufacturers have begun to try to innovate in appearance. 3D glass is one of the important tools to improve the appearance of mobile phones. The 3D front cover glass has a better screen display effect, and the 3D rear cover glass has a be...

AI Technical Summary

Problems solved by technology

[0005] 3D curved glass is to place a 2D glass sheet in a 3D mold and perform hot bending at high temperature. Because the inner arc surface of the glass is determined by the arc surface of the 3D mold, the inner frame will not be deformed, and the outer edge of the glass will not be deformed due to the operator placing the sheet incorrectly. , Abnormal thermal bending equipment and abnormal original size of 2D glass sheets, etc., lead to deformation; the probe positioning method of CNC machining of 3D curved glass in the prior art is basically to measure the four sides of the 3D curved glass, and obtain the coordinates of the CNC machining center ; This positioning method has the following problems: the 3D curved glass will cause deformation of the glass periphery during the hot bending process, the X and Y coordinates of the probe positioning are not accurate, the dimensional accuracy of the processed 3D curved glass cannot meet the standard requirements, and the production yield is low. Low

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