Grinding and thinning method for glass

Abstract

The invention discloses a grinding and thinning method for glass. The grinding and thinning method comprises the following steps of adopting a paralleled surface grinding machine as processing equipment; taking upper and lower grinding wheels or polishing pads as cutting tools; using a water-based cutting fluid to cool and lubricate a workpiece; and placing a glass workpiece between an upper cutting tool and a lower cutting tool for grinding, wherein a feeding mode of the processing equipment is that the mode of circular motion or linear motion is adopted for feeding; end faces of the upper and lower cutting tools work by adopting a parallel or angle opening mode, and the maximum cutting thickness of the workpiece is not more than granularity values of the cutting tools. By adopting the grinding and thinning method disclosed by the invention, the time for processing mobile phone glass is about 3S; compared with a traditional method, the grinding and thinning method disclosed by the invention has the advantages that the efficiency is improved by 6 times, the thickness dimensions of the workpieces are stable and controllable, the quality and the yield of products are improved, and labor intensity is reduced; and in addition, high-efficiency and high-quality automatic production of glass (such as a mobile phone glass panel and a sapphire panel) is easily realized.

Description

technical field [0001] The invention belongs to a hard and brittle material processing method, in particular to a glass grinding and thinning method. Background technique [0002] There is one core process in the processing of new panels, sapphire and other hard and brittle materials glass, which is to reduce the thickness of the workpiece. The traditional glass grinding and thinning method uses free abrasives for precision and ultra-precision grinding to achieve thinning. Under the rolling and extrusion of abrasive grains, the processed surface material produces multiple plastic deformations and breaks away from the surface; as the surface material is continuously removed, the profile surface becomes gentler and smoother while achieving thinning. The traditional grinding method thins the glass, puts 20~60 workpieces into the processing area each time, and then pressurizes the upper and lower grinding discs, the upper and lower grinding discs rotate, and the workpieces are ...

AI Technical Summary

Problems solved by technology

The workpieces are taken out after processing, and then put into the next batch of workpieces. It is difficult to control the thickness difference of each batch of workpieces, resulting in too large thickness differences of different batches of workpieces, which need to be manually classified according to size

Although the workpiece processed by this thinning method has good processing accuracy (such as low surface roughness), its processing efficiency is relatively low, the yield rate is low, it takes a long time, and it is difficult to automate. The time required to thin a piece of glass is 18S about

In addition, the defects in the grinding process are: 1) The removal of abrasive materials is slow and the processing efficiency is low; 2) The thickness and size of the workpiece cannot be accurately controlled; 3) It is necessary to clean and replace abrasives frequently, which wastes abrasives and is not environmentally friendly; 4) Labor intensity is high , high technical level requirements for workers

With the improvement of market requirements for product response speed, traditional processing methods have become a bottleneck in the production process

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