Fast measuring method of right angle of large-sized rectangular glass substrate and measuring instrument thereof

A glass substrate, large-scale technology, applied in measurement devices, instruments, optical devices, etc., can solve the problems of high cost, measurement errors, scrapped glass substrates, etc., to achieve high efficiency and simple operation, convenient observation and reading, convenient and fast cost. Effect
CN101886918AInactive Publication Date: 2010-11-17TUNGHSU GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TUNGHSU GRP
Publication Date
2010-11-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for measuring the right angle of a large-sized rectangular glass substrate by utilizing a plane geometry principle and a linear displacement sensor and singlechip technology and measuring the displacements of two parallel edges of glass as well as a measuring instrument thereof. The accurate positioning of the glass substrate is realized by utilizing upper buses of two positioning columns positioned at the bottom of equipment and a side bus of a positioning column positioned at the left side of the equipment as standards; a part to be measured of the left side surface of the glass substrate stresses a mandril of the measuring instrument to generate the displacement; if the bottom edge of the glass substrate is not perpendicular to the side edge of the glass substrate, the reading value of the measuring instrument can be different by overturning the glass substrate by the displacement of 180 degrees, and a half of a difference value is right angle measuring data. The invention can fast and conveniently measure whether the right angle of the adjacent edges of the glass is in a range of 1 / 1000 or not; and in addition, the measuring method can realize the fast, efficient and easy operation in the production of the large-sized rectangular glass substrate, is convenient and fast, is lower in cost and better meets the requirements for the flow operation of a glass production line.
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Description

technical field

[0001] The invention relates to a method for measuring the right angle of a large-sized rectangular glass substrate by measuring the displacement of two parallel sides of the glass by using the principle of plane geometry, a linear displacement sensor and a single-chip microcomputer technology and a measuring instrument thereof. Background technique

[0002] At present, it is a troublesome thing to measure the right angle of a large-size glass substrate. For the measurement of the perpendicular angle of flat objects, there are roughly two basic methods: optical methods and mechanical methods.

[0003] 1. Optical method: Using the principle of light reflection, a laser emitting instrument fixed relative to the reference plane emits a straight line of light. The light is reflected by the emitting instrument, and the measuring instrument moves on the measured surface to measure the reading change of the reflected light on the scale instrument. This change value...

Claims

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