Precise processing and forming mold used for high-precision micro power transmission ring process lining

Abstract

The invention provides a precise processing and forming mold used for high-precision micro power transmission ring process lining. A fixing way of a mold core fixing part is creatively designed, so that a combined mold core fixing way adopts a cylindrical positioning pin to position; a positioning pressing block is fixed by a bolt I; the positioning pressing block presses and fixes a combined mold core; front and rear sides of a concave mold are positioned by step structures at the two sides of the upper end surface of a fixed plate; left and right sides of a concave mold are positioned by the positioning pressing block, so that the concave mold is effectively positioned in an all-around mode, and thus, the mold core forming part is positioned and fixed reliably, and thus, assembly precision and strength of the mold are improved, the service life of the mold is prolonged, injection-molding and cooling temperature gradient and injection-molding plastic flow parameters of an injection-molding pouring system are conveniently adjusted, the problems that the key dimension of the part is extremely poor and the dimension is unstable as the position random of the pouring gate is great, and injection-molding tilting degree of the plastic part is reduced, and a qualification rate of the injection-molding assembly process lining is increased.

Description

technical field [0001] The invention belongs to the technical field of moulds, and in particular relates to a precision machining forming mold for high-precision miniature power transmission ring process bushings. Background technique [0002] Micro precision power transmission accessories are the core power transmission components of a certain type of equipment. Its assembly and processing are realized by assembling process bushings. The structure of the process bushings is basically similar to Figure 5 and 6 As shown, only the number of positioning rings is different. The more positioning grooves, the greater the warping deformation, such as Figure 7 and 8 shown. In actual production, the technology of the 1950s has been used, and the molding structure of the relevant traditional molds is as follows: Figure 9 and 10 As shown, the parts formed by the original mold have always had large warpage and deformation, and some key dimensions cannot meet the product design re...

AI Technical Summary

Problems solved by technology

In actual production, the technology of the 1950s has been used, and the molding structure of the relevant traditional molds is as follows: Figure 9 and 10 As shown, the parts formed by the original mold have always had large warpage and deformation, and some key dimensions cannot meet the product design requirements. It is necessary to change the product design drawings, or use it out of tolerance, and it is difficult to improve the pass rate of subsequent assembly and processing.

[0003] The traditional mold design is based on the introduction and design of various textbooks and professional reference materials. The main fixing method of the forming core is cylindrical pin positioning and screw fixing. The screw size is small, the strength is low, and the fixing is easy to fail. The position of the mouth is very random, causing the key dimensions of some parts to be out of tolerance, and the dimensions are unstable

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