Machining method of glass mold

Abstract

The invention provides a machining method of a glass mold. The machining method comprises the following steps of parison casting, parison outer circular surface turning, mold matched surface milling, side surface positioning benchmark milling, spray welding, matched surface refining, machining of other mold parts and finished product forming. In the parison outer circular surface turning step, a correction outer circular molded line corresponding to the parison outer circular surface is obtained by utilizing an image processing technology, then a positioning hole is formed by adopting the correction outer circular molded line as the benchmark, the distance between the correction outer circular molded line and the parison outer circular surface is used as the turning removal, so that the irregular problem of the outer circular molded surface can be primarily solved. By adopting the machining method, the matching precision of the glass mold matched surface can be further improved, and the qualification rate of products can be effectively increased.

Description

technical field [0001] The invention belongs to the technical field of mold processing, and in particular relates to a glass mold processing method. Background technique [0002] At present, the commonly used glass mold manufacturing process usually includes the following processes: casting blank (the blank is usually two half molds), processing the mating surface (also called seam surface) of the two half molds of the cast blank, and machining the outer circle. , Inner cavity processing (also known as mold cavity processing), cooling hole and heat preservation hole processing, positioning groove and positioning hole processing, plane air groove processing, plane milling processing, inner cavity pattern processing, mold outer surface and inner cavity lettering, mold milling Edge and polishing, etc.; it can be seen that the processing of glass molds has many process steps, long production cycle, frequent replacement of fixtures and changes of positioning references during the...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used glass mold manufacturing process usually includes the following processes: casting blank (the blank is usually two half molds), processing the mating surface (also called seam surface) of the two half molds of the cast blank, and machining the outer circle. , Inner cavity processing (also known as mold cavity processing), cooling hole and heat preservation hole processing, positioning groove and positioning hole processing, plane air groove processing, plane milling processing, inner cavity pattern processing, mold outer surface and inner cavity lettering, mold milling Edge and polishing, etc.; it can be seen that the processing of glass molds has many process steps, long production cycle, frequent replacement of fixtures and changes of positioning references during the processing process, and the glass mold has a special mold formed by two halves. Therefore, in the process of glass mold processing, the selection of positioning datum is particularly important, because the inadvertent selection of positioning datum will greatly affect the matching accuracy of the mating surface of the glass mold, and the level of matching accuracy will greatly affect Affect the scrap rate of the product

[0003] Chinese patent 201110121158.0 (publication number CN102166710) discloses a processing method for glass molds for bottles and cans, which uses the outer circular surface of the parison as the positioning surface to process the mating surface of the mold. However, as described in the background technology of this patent, When we cast the parison, there may be eccentricity between the outer circular surface of the obtained parison and its cavity. Therefore, processing the mating surface of the mold based on such an outer circular surface will obviously affect the processing of the mating surface. precision