3D glass profile measuring instrument and application method thereof

Abstract

The invention discloses a 3D glass profile measuring instrument which comprises a rack mechanism, a Y-axis driving mechanism, an X-axis driving mechanism, a rotating fixing mechanism and a Z-axis detecting mechanism, wherein the rack mechanism is fixedly connected with the Y-axis driving mechanism and the Z-axis detecting mechanism through bolts, the Y-axis driving mechanism is fixedly connected with the X-axis driving mechanism through bolts, the X-axis driving mechanism is fixedly connected with the rotating fixing mechanism through bolts, the rack mechanism comprises a case bottom plate, acase outer cover and a rear cover plate are fixedly arranged at the top of the case bottom plate through bolts, and a platform supporting base and an upright post are welded at the top of the case bottom plate through bolts on the case outer cover. Through adoption of the 3D glass profile measuring instrument of the invention, a spectrum confocal sensor is used to measure the profile of mobile phone glass, and the non-contact measurement can not damage the mobile phone glass, and meanwhile, the measurement precision is high, the measurement error value is small, and the measurement time is short.

Description

technical field [0001] The invention relates to the technical field of measuring devices, in particular to a 3D glass profile measuring instrument and a method for using the same. Background technique [0002] The mobile phone glass is an important part of the mobile phone. In order to ensure that the mobile phone glass is compatible with the size of the mobile phone, it is necessary to measure the contour of the produced mobile phone glass, so as to judge whether the mobile phone glass is a qualified product. Usually, the contour measurement of the mobile phone glass is mainly It is divided into non-contact type and contact type. Among them, the measuring instrument of contact type measurement needs to touch the surface of the workpiece to be measured. Camera visual inspection and laser scanning sensor measurement, but industrial camera visual inspection requires the use of multi-eye cameras to detect mobile phone glass from multiple different angles, making this method req...

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Problems solved by technology

[0002] The mobile phone glass is an important part of the mobile phone. In order to ensure that the mobile phone glass is compatible with the size of the mobile phone, it is necessary to measure the contour of the produced mobile phone glass, so as to judge whether the mobile phone glass is a qualified product. Usually, the contour measurement of the mobile phone glass is mainly It is divided into non-contact type and contact type. Among them, the measuring instrument of contact type measurement needs to touch the surface of the workpiece to be measured. Camera visual inspection and laser scanning sensor measurement, but industrial camera visual inspection requires the use of multi-eye cameras to detect mobile phone glass from multiple different angles, making this method require a complex image processing process, strict requirements on ambient light, and difficult to achieve precision At the same time, the measurement of the laser scanning surface sensor relies on the transmission device to drive the laser scanning sensor to rotate or translate relative to the measured workpiece, record the distance information from different positions of the workpiece, and obtain the contour information of the overall workpiece after mathematical conversion, but when the measured workpiece When the outer surface is a low-reflectivity surface, the reflected light intensity will be small and the measurement error will be large

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