A new propeller casting structure

Abstract

The invention discloses a novel propeller casting mold structure and belongs to the field of casting processes. The structure comprises upper molds with the number the same as that of blades, a wholemiddle core, and a whole lower mold; the area between propeller blade roots serves as an independent partitioning casting mold; the partitioning casting mold serves as the middle core of the casting mold to comprise the pressure face and the suction face at the blade roots and also comprise part of non-overlapping region and a propeller hub face at the blade parts; the upper molds with the numberthe same as that of the blades comprise external suction faces and parting surfaces; the partitioning casting mold of the upper mold is combined with the lower mold; and the overall casting mold of apart is formed. The molding difficulty problem of the overlapping regions at the blade roots can be reduced, through arrangement of the middle core structure, the situation that the casting mold thickness of the overlapping regions at blade roots of traditional propeller parting structures is low is avoided, the casting mold thickness at the propeller blade roots is increased, and the casting moldintensity at the blade roots is also improved.

Description

technical field [0001] The invention belongs to the field of casting technology, and relates to a novel propeller casting mold structure, which is especially suitable for casting parting of propellers with complicated shapes. Background technique [0002] As a typical three-dimensional complex surface part, the propeller has a complex blade shape, and the blade shape during casting faces many insurmountable technical difficulties. [0003] The traditional spiral blade shape generally adopts the method of making a real sample wooden model or a smooth shape of a hand-made scraper. For each blade, the pressure surface and the suction surface are respectively molded, and then molded together. At the same time, the surface of the hub also needs to be Using special tooling to realize the shape, this kind of modeling method is cumbersome and the precision is not high. Contents of the invention [0004] In order to overcome the problems of complex operation, cumbersome process an...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of complex operation, cumbersome process and great difficulty in the current propeller casting molding process, the present invention proposes a new propeller casting mold structure, which uses the area between the propeller blade roots as a separate block casting The block casting mold is used as the core of the casting mold, including the pressure surface and suction surface at the blade root, and also includes part of the non-overlapping area at the blade and the hub surface; the upper mold with the same number of blades includes the external suction surface, subsection Surface, combining the block casting mold of the upper mold with the lower mold to form the overall casting mold of the part, the propeller casting mold matching diagram is as follows figure 2 shown

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