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A method for reducing the scrap rate of processed sapphire products

A sapphire and scrap rate technology, applied in metal processing equipment, control of workpiece feed movement, manufacturing tools, etc., can solve problems such as low scrap rate and high scrap rate of sapphire products with grooves

Active Publication Date: 2019-01-29
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for solving the problem of high scrap rate of sapphire products with grooves, specifically a method for minimizing the scrap rate of sapphire products caused by the problem of bad grinding wheel rods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, the size of the processed sapphire wafer is 20×20×1.5mm, and one plate surface is a plane, but there are concave U-shaped grooves near the four peripheral positions of the plane. These tops have a width of 2mm and bottoms. The U-shaped groove with a width of 0.4mm is obtained by grinding with CNC and grinding wheel rod. The shape of the grinding wheel rod in the present invention is a pencil shape after sharpening with a pencil sharpener, and the tip position at the lowermost end is diamond sand for direct contact with the sapphire wafer, while the upper end of the grinding wheel rod is fixed on the CNC.

[0027] In this embodiment, the machine's judgment result is that the grinding wheel rod is "normally worn", and the grinding wheel rod can be used to process the next piece of sapphire.

[0028] The specific steps are as follows:

[0029] 1. When a new grinding wheel rod is installed on the machine tool, its service life value will return to zero,...

Embodiment 2

[0042] In this embodiment, the size and processing method of the processed sapphire wafer are the same as those in Embodiment 1. In this embodiment, the machine's judgment result is that the grinding wheel rod "wears beyond the standard", and the machine tool stops using the grinding wheel rod to process sapphire.

[0043] The specific steps are as follows:

[0044] 1. When a new grinding wheel rod is installed on the machine tool, its service life value will return to zero, and the benchmark tool length wear and wear comparison values ​​will return to zero

[0045] Example: grinding wheel service life record: #601=0; reference tool length / processing tool length: #551=0, #552=0; wear comparison value, #553=0;

[0046] 2. The tool setting instrument records the initial tool length and worn tool length

[0047] Example: #551=Z126.68, #552=Z126.68

[0048] 3. After processing 1 piece of product, set the knife, update the length of the worn knife, and record the number of times...

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PUM

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Abstract

The invention provides a method for reducing the scrappage of processed sapphire products. The method comprises the steps that grooves in sapphire are subjected to grinding processing through the tip of a grinding wheel rod on a numerical control machine tool, abrasion monitoring on the grinding wheel rod is achieved through a method of tool length data comparison after each piece of sapphire product is processed, and specifically, whether the grinding wheel rod is continuously adopted to process the next piece of sapphire or not is automatically determined by comparing a difference value of the tool length after each piece of sapphire is processed and an initial tool length when no sapphire is processed and a preset abrasion allowance value. By means of the method for reducing the scrappage of the processed sapphire products, the scrappage, of the sapphire products, caused by grinding wheel rod defective can be reduced to zero.

Description

technical field [0001] The invention relates to a method for reducing the scrap rate of CNC (numerical control machine tool) processing sapphire products containing grooves. Background technique [0002] A grooved sapphire product refers to a sapphire faceplate with grooves on its surface, which are processed by CNC combined with grinding of grinding wheel rods. The length of the grinding wheel rod is roughly 30-40mm, and its shape is similar to that of a pencil sharpened by a pencil sharpener. The tapered tip is the tip of the grinding wheel rod, which is used for direct contact with sapphire grinding. In the prior art, the method of manually monitoring the wear of the grinding wheel rods is used to find and replace the grinding wheel in time, but there are multiple stations (such as 8) on each CNC machine tool, and each worker needs to monitor several stations (such as 10) at the same time. ~ 20) machines, and the number of sapphire panels that can be processed by each gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/02B24B49/16
CPCB24B19/02B24B49/165
Inventor 周群飞饶桥兵张细军
Owner LENS TECH