Methods of measuring and compensating cutting size on chamfering machine of sheet material

Abstract

The invention relates to a method for measuring and correcting chamfer size of rectangle glass basal edge. It is not necessary to detach the workpiece from chanfer device, therefore the finish size is automatically detected and the position of worktable and tool of chanfer device based on the detected value. After the positioning mark is set on the position of three acmes of right triangle formed on the board and the board and lateral border parrallel to feed direction are processed, in the first measuring procedure, the board is transfered towards returning direction and one camera of two camera reads two marks set on the feed direction to detect difference of two marks at the position perpendicular to feed direction. In the second measuring procedure, after the camera is moved to the position for reading the lateral border, the board is feeded and the finish size of lateral border is detected by the two camera. In addition, the angle of worktable and the allowance of tool height are calculated based on the detecting result.

Description

technical field [0001] The present invention relates to a method of measuring and correcting processing dimensions in a chamfering device used for processing the edges of rectangular glass substrates such as display screens, that is, to a method of measuring and correcting processing dimensions of a plate as an object of test processing and sampling inspection. It is a method to process dimensions, perform automatic measurement, and correct the positions of the table and tools of the chamfering device based on the measured values. Background technique [0002] A chamfering device for a glass substrate is a device that chamfers or rounds sharp ridges and corners generated on the edge of a glass substrate cut by cutting or the like with a tool (usually a grinding wheel). As shown in FIG. 8 , generally, such a chamfering apparatus has a worktable 2 that absorbs a glass substrate 1 with negative pressure, and tools 3 provided on both sides of the workbench. The worktable 2 can ...

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned conventional methods, since the measurement of the processing size is carried out manually, there are the following problems: the operator must have skilled skills; there may be measurement errors due to carelessness and misreading; It takes time to calculate the correction value of the table angle and tool position by measuring the value; the operator needs to manually input the calculated correction value into the controller of the chamfering device, which may cause input errors, etc. Wait

In addition, as a problem specific to the chamfering device, the following problem also arises: with the increase in area and thickness of the glass substrate as the workpiece, the substrate processed for the test and the substrate for sampling inspection are separated from the chamfering device. The difficulty of taking it out and setting it on the detection device increases; and, with the enlargement of the workbench, the error of the p

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