A method for finely engraving patterns on the bottom surface of a mold cavity

Abstract

The invention discloses a finely carved processing method for a pattern on the bottom surface of a mold cavity, which cuts relatively independent pattern programs through the most appropriate processing range, thereby obtaining the most realistic processing program. This kind of processing method avoids the phenomenon of over-cutting, springing and jumping of the knife during the processing. Because the program is relatively simple and the amount of calculation for post-processing is not too large, the storage space occupied by the program is relatively small. In actual processing, the data transmission speed is relatively smooth, and there is no pause and nesting phenomenon in data transmission, which makes the pattern precision of the processed cavity bottom surface higher. For some irregular patterns on the bottom surface of the cavity, after enlarging the processing range, you can better find out the processing rules and rules, and cutting the calculated program will not destroy the rules and rules, making the processing effect better. it is good.

Description

technical field [0001] The invention relates to the fine carving processing technology of patterns on the bottom surface of a mold cavity, in particular to the processing technology of irregular patterns in the cavity. Background technique [0002] Car lamps are engraved with patterns of various shapes and textures, which play a role in light distribution and decoration. The mold design of automobile lampshades and the fine carving process of patterns are an important link in the design and manufacture of automobile lampshade molds. The pattern on the bottom surface of the mold cavity is formed on the outermost surface of the product after injection molding. One is to participate in light distribution, which must first meet the requirements of national mandatory standards; the other is to decorate the appearance, which is one of its most important functions. , the requirements are extremely strict. However, limited to the actual level of processing and the characteristics o...

AI Technical Summary

Problems solved by technology

If such a pattern has to be designed, the electro-corrosion machining technology and EDM are generally adopted. However, the pattern processed by this method is relatively rough, and its size and accuracy cannot be controlled, and there are too many human factors.

Although there is mirror surface electro-corrosion processing technology now, the processing time is too long, the cost is too high, and the investment in machine tools in the early stage is relatively large. Therefore, how to process the patterns in molds with deep cavities has become the focus of automotive lighting manufacturers. Difficulties that urgently need to be solved