Measuring device and measuring method for curved glass

Abstract

The invention discloses a measuring device and a measuring method for curved glass. The measuring device comprises: a laser measuring part capable of emitting a laser beam to a curved part to measure the thickness of the curved part. The laser measurement unit is configured to move the laser beam irradiated to the curved surface portion at an irradiation point of the curved surface portion along the arc of the cross section of the curved surface portion, and to move the laser beam and the laser beam in the arc shape of the curved surface portion. The included angle between the normal of the position of the irradiation point of the curved surface remains unchanged; the laser measuring part can move along the horizontal direction to adjust the angle between the laser beam and the curved surface. The invention can basically keep the angle between the measuring laser beam and the normal line of the measured curved surface unchanged, thereby improving the measurement accuracy, and can also measure the curved part and straight part of the curved glass, thereby realizing the length, width, Measurement of various dimensions such as thickness.

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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