Conical tooling

Abstract

The invention belongs to the technical field of casting, and particularly relates to conical tooling for sand mold casting. The conical tooling is mainly applied to a 3D printed sand mold casting production process, and comprises a tooling body and a tooling tray, wherein the upper surface and the lower surface of the tooling body are of an opening type structure, the inner contour of the toolingbody is of a conical structure which is expanded from top to bottom, the tooling tray is arranged under the tooling body, the sand mold is assembled inside the tooling body, and the inner contour of the tooling body has the same conicity as the outer contour of the sand mold. Box burying operation is omitted in the 3D printed sand mold casting production process, the box clamping procedure is omitted, the overall rigidity of the sand mold is greatly improved, so that the sand mold is prevented from being expanded and being subjected to core floating in the pouring process, the production costof castings is reduced, and the production efficiency and the production quality are improved.

Description

technical field [0001] The invention belongs to the technical field of casting, in particular to a tapered tooling for sand casting. Background technique [0002] With the promotion and application of 3D printing technology, the method of using 3D printing sand molds for casting production has gradually become popular in the industry. Castings are required. This method does not need to make molds, and does not need to consider the problems of mold removal and material withdrawal in traditional processes. It can realize one-time high-precision printing of sand molds with various complex structures, and is very suitable for casting test pieces or small batches of castings. [0003] In the 3D printing sand mold production process of small castings, the sand mold can be fixed by clamping the screw; for medium and large castings in the pouring and solidification process, the sand mold is subject to buoyancy, high temperature radiation, shear force, etc., resulting in a significa...

AI Technical Summary

Problems solved by technology

But this method needs to consume a large amount of resin sand and manpower, and the production cost increases

Another solution is to increase the sand consumption of the sand mold in all directions to increase the rigidity of the sand mold. However, increasing the sand consumption of the sand mold in this scheme cannot completely eliminate the buoyancy and shear force, and the increased sand consumption will also waste a lot of printing resources.

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