A kind of sand mold multi-stage flexible extrusion forming method

Abstract

The invention belongs to the intersection field of casting and rapid prototyping, and discloses a sand mold multi-stage flexible extrusion forming method. In the forming process of resin sand molds for casting, the method adopts multi-level contacts to approach the mold cavity, and can obtain near-formed sand molds or patterns with higher approximate contours, which reduces the volume of near-formed sand molds, thereby saving casting sand. Reduced net shape time for subsequent cuts. This method first lifts the primary contact 1 for cavity approximation, and then lifts the secondary contact 2 for supplementary filling, which not only improves the approximation accuracy of the cavity 3, but also solves the problem of easy bending and deformation when a single small contact is lifted and lowered ; When producing a single piece of small batch casting sand mold, it can significantly improve the sand mold forming efficiency.

Description

technical field [0001] The invention belongs to the intersecting field of casting and rapid prototyping, and in particular relates to a sand mold multi-stage flexible extrusion forming method. Background technique [0002] Casting is a kind of metal thermal processing technology mastered by human beings earlier, with a long history. The traditional sand casting process is complex, and the design and processing of molds such as patterns and core boxes is a complex and time-consuming process with multiple links. With the development of science and technology, casting technology and casting efficiency have been greatly improved. The moldless digital precision forming technology integrates CAD technology, casting technology, numerical control technology, cutting technology, etc. In casting production, no mold is needed, and various casting sand molds are produced by processing sand billets. Great advantage in production. [0003] Nowadays, economic globalization is intensifyi...

AI Technical Summary

Problems solved by technology

In the forming process of resin sand molds for casting, a near-formed sand mold with precise contours can be further obtained by extrusion, which saves time for the subsequent net shape cutting process, and can solve the problem of easy bending and deformation during the lifting and extrusion process of a single small contact

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