Sapphire crystal block corner profiling machining method
A sapphire and corner processing technology, used in metal processing equipment, manufacturing tools, machine tools suitable for grinding workpiece edges, etc., can solve the problems of sapphire crystal block imitation corner chipping and wrinkles, etc. The effect of reducing wear and imitating corners with high efficiency
Inactive Publication Date: 2018-06-29
LENS TECH CHANGSHA
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Problems solved by technology
[0004] Therefore, this area needs to provide a kind of sapphire crystal block imitation angle method to solve the chipping and wrinkle problem when sapphire crystal block imitation angle processing
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[0021] In the present invention, the electroplated diamond imitation angle grinding wheel 3 with a particle size of 200 objects is first installed on the surface grinder, and its counterweight should be adjusted before the emery wheel is installed (the counterweight is an iron block for adjusting dynamic balance on the emery wheel) so that the moment of inertia Balanced, fix the sapphire crystal block imitation angle processing fixture 2 on the surface grinder processing platform 1, and clamp the crystal block with the right angle to be processed facing upward. During the fixing process of the imitation angle processing fixture, the surface grinder bed should be used as the benchmark, and the parallelism between the grinding wheel and the imitation angle fixture should be adjusted with a dial indicator to ensure the accuracy of the imitation angle processing. An electroplated diamond imitation angle grinding wheel is installed on the surface grinder. When setting the knife, the...
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The invention provides a sapphire crystal block corner profiling machining method. A sapphire crystal block is in a cuboid shape, and corner profiling machining is conducted for the four parallel ridges, in the height direction, of the sapphire crystal block. In the corner profiling process, a machine tool drives a clamp and the sapphire crystal block arranged on the clamp to move back and forth in the direction of the to-be-machined ridges, in other words, the clamp and the sapphire crystal block move back and forth in the X-axis direction of the machine tool, a grinding wheel can move downwards in the vertical direction while polishing sapphire, and the downwards moving speed of the grinding wheel is the cutter lowering speed. The corner profiling method is a variable-speed cutter lowering corner profiling method and includes the following sequentially-conducted steps that firstly, medium-speed cutter lowering is conducted; secondly, high-speed cutter lowering is conducted; thirdly,low-speed cutter lowering is conducted; and fourthly, cutter polishing is conducted without cutter lowering. By means of the variable-speed cutter lowering corner profiling method, the cracking and crimping risks of the sapphire crystal block in the corner profiling process are completely avoided, in addition, the corner profiling efficiency of the method is high, the damage rate of the sapphire crystal block is low, and the corner profiling qualification rate is high.
Description
technical field [0001] The invention belongs to the field of sapphire processing, and in particular relates to a method for processing sapphire crystal block imitation corners. Background technique [0002] The chemical composition of artificially grown sapphire is alumina (Al 2 o 3 ), which is formed by covalently bonding three oxygen atoms and two aluminum atoms. Sapphire has a Mohs hardness of 9, which is second only to diamond in nature. It has the characteristics of high sound velocity, high temperature resistance, corrosion resistance, high hardness, high light transmission, and high melting point (2045°C). Because sapphire has the above-mentioned good physical and optical properties, it is widely used in the fields of watch wear, mobile phone window panels and other optical devices. At present, related sapphire products have appeared on watches and mobile phones. However, sapphire is hard and brittle, with poor rigidity, difficult to process, and prone to cracking ...
Claims
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IPC IPC(8): B24B9/16
CPCB24B9/16B24B9/161
Inventor 周群飞饶桥兵梁成华
Owner LENS TECH CHANGSHA