Measuring device and method for measuring curved glass

Abstract

The invention discloses a measuring device and a method for measuring a curved glass. The measuring device comprises a laser measuring unit. The laser measuring unit is capable of emitting a laser beam to a curved portion to measure a thickness of the curved portion, is configured to be capable of moving the laser beam emitted toward the curved portion at an irradiation point of the curved portionalong an arc-shaped portion of a section of the curved portion, and configured to make an angle between the laser beam and a normal of the laser beam at the position of the irradiation point of the curved portion unchanged. The laser measuring unit is movable in a horizontal direction to adjust an angle between the laser beam and the curved portion. The measuring device and the method for measuring the curved glass can make the angle between the measuring laser beam and the normal of the measured curved surface substantially unchanged, thereby improving the measurement precision; and also canmeasure the arc-shaped portion and a straight portion of the curved glass, thereby realizing the measurement of various dimensions such as the length, the width, and the thickness of the curved glass.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a measuring device and a measuring method for curved glass. Background technique [0002] There is a product called a laser displacement sensor in the prior art, which can measure the distance from the sensor to the target to be measured. If the target to be measured is transparent, the thickness of the target can also be measured. However, this type of sensor requires that the emitted laser beam maintain a certain angle with the surface of the target being measured. Angle changes have a great impact on measurement accuracy. If the angle between the incident light and the normal of the measured glass exceeds the range, it may even cause unmeasurable consequences. Therefore, in the process of measuring the size of the curved glass, for the curved part of the curved glass, the normal direction of the curved surface is changing, and it is difficult to keep the incident angle co...

AI Technical Summary

Problems solved by technology

If the angle between the incident light and the normal of the glass to be measured exceeds the range, it may even cause unmeasurable consequences

Therefore, in the process of measuring the size of the curved glass, for the curved part of the curved glass, the normal direction of the curved surface is changing, and it is difficult to keep the incident angle constant when the laser beam with a fixed direction scans the entire curved area

Even when the surface changes greatly, it will cause unmeasurable consequences

In addition, there is no equipment in the prior art that can simultaneously measure the arc portion and straight line portion of curved glass, let alone the equipment that can simultaneously measure the size of curved glass in both horizontal and vertical directions

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