T-bed body split core method based on additive manufacturing

Abstract

The invention discloses a T-shaped bed body parting method based on added material manufacturing. A T-shaped bed body sand core is slit into a high guide rail sand core at the lower part, a pouring gate sand core and multiple low guide rail sand cores at the upper part through adopting a horizontal core separation surface and a vertical core separation surface in a large plane form; the high guiderail sand core at the lower part and the pouring gate sand core are used for forming a base sand mold at the lower part; matching surfaces of the multiple lower guide rail sand cores at the upper part are all of plane structures, so that the problems of complicated structure and difficult assembly of each sand core in the prior art are prevented; and meanwhile, the base sand mold at the lower part is provided with positioning structures for positioning the low guide rail sand cores, so that the T-shaped bed body molding core assembly difficulty is reduced. Meanwhile, the number of the sand cores is greatly reduced, and the production efficiency of T-shaped bed bodies are greatly improved.

Description

technical field [0001] The invention relates to a casting process method, in particular to a core-integrated method for splitting cores. Background technique [0002] The "T" bed is the main component of the horizontal machining center and one of the most complex parts in machine tool products. Its length, width and height are three-layer inner cavities. In view of this multi-layer inner cavity structure, at least 33 sand cores need to be cut when making wood mold cores and molding, which makes it difficult to assemble cores and core shapes, and difficult to control the accuracy. Specifically: 1) The gap between sand cores is too large , when filling the mold, the molten iron is randomly strung together, resulting in many seams in the casting, which makes cleaning difficult; 2) The sand core of the long tubular discharge tank is supported at both ends, forming a cantilever beam structure, which makes the sand core of the discharge tank easy to break, and iron wire is require...

AI Technical Summary

Problems solved by technology

In view of this multi-layer inner cavity structure, at least 33 sand cores need to be cut when making wood mold cores and molding, which makes it difficult to assemble cores and core shapes, and difficult to control the accuracy. Specifically: 1) The gap between sand cores is too large , when filling the mold, the molten iron is randomly strung together, resulting in many seams in the casting, which makes cleaning difficult; 2) The sand core of the long tubular discharge tank is supported at both ends, forming a cantilever beam structure, which makes the sand core of the discharge tank easy to break, and iron wire is required to close the box Fixing it on the lower sand mold is difficult to operate, and during the pouring process, core drift often occurs due to improper clearance, resulting in choking holes or even skin penetration in the casting, making it very difficult to control the quality of the casting; 3) There is no positioning structure between the sand cores in the inner cavity, In the case of molten metal buoyancy, choking is easy to occur, and the positioning size between sand cores is difficult to control, resulting in excessive casting size deviation

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