Processing method of sapphire nozzle inner pyramidal face

Abstract

The invention discloses a processing method for an inner cone of a sapphire spray nozzle, the processing method utilizes a diamond grinding drill provided with a cone head and the diameter smaller than the cone base diameter which needs to be processed, and adopts a generating method to process the inner cone of the sapphire spray nozzle, the invention has the processing steps that at first, a diamond grinding drill with relatively thick grain size is adopted to roughly process the sapphire work piece with processed spray nozzle diameter on a triaxial channeller, then a diamond grinding drillwith relatively thin grain size is adopted to finely process the sapphire work piece with grinded inner cone by clamping the work piece on a watch maker lathe, and then a diamond grinding drill with a thinner grain size than the thin grain size to process for shaping the inner cone on the watch maker lathe as well. The invention can reduce the production cost, improve the production efficiency, and allow the normal workers to finish the inner cone processing of sapphire spray nozzle with the high standard.

Description

technical field [0001] The invention relates to a processing method for sapphire, in particular to a processing method for the inner cone surface of a sapphire nozzle. Background technique [0002] The nozzle made of artificial sapphire has the characteristics of high hardness, wear resistance, small linear expansion coefficient, high compressive strength and acid and alkali corrosion resistance, and is widely used in the industrial field. However, since artificial sapphire has a hardness of Ta Mok's 9, second only to natural diamonds, and has the characteristics of high brittleness and crystal anisotropy, its processing is also quite difficult, especially the processing of the inner cone of the sapphire nozzle is even more difficult. Big. At present, the method of processing the inner cone surface of the sapphire nozzle is usually to use natural diamond as the abrasive tool, and use the processing method of the forming mill to process the natural diamond into a cone head w...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the volume of natural diamonds is generally very small, the size of the drills produced by them is limited, which determines that only workpieces with small inner cone diameters and short cone lengths can be processed, and generally only the diameter of the cone bottom can be processed The inner cone of the workpiece is less than 4.0mm and the cone depth is less than 2.0mm; in addition, natural diamonds can only grind the cone surface with an angle range of 60-120°. big limit

[0004] 2. Since the price of natural diamonds is 1,000-1,500 yuan / g, the inner cone of the sapphire nozzle processed by natural diamond grinding and drilling consumes quickly. It is large and requires frequent grinding. The grinding period is long and the efficiency is low, resulting in high processing costs. The processing cost of the inner cone of each sapphire nozzle is at least 2.0 to 3.0 yuan.

[0005] 3. The inner cone of the sapphire nozzle is processed by natural diamond grinding and drilling, which requires the use of high-precision special machine tools, which are expensive

At the same time, it takes 20 to 30 minutes to process a sapphire nozzle with a high-precision special machine tool using the forming grinding method, and the processing efficiency is not high.

[0006] In summary, processing the inner cone of sapphire nozzles with natural diamond grinding drills and forming grinding methods is subject to many restrictions, and the cost is high and the efficiency is low.

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