Core box for high-precision assembly foundry

Abstract

The invention discloses a core box for high precision assembly casting. The provided core box solves the problem that the concentricity of a conventional mould can be easily deviated in the prior art. The core box comprises a first core box unit (21) and a second core box unit (22), wherein the first core box unit (21) and the second core box unit (22) have the same structure. The first core box unit (21) is composed of a left-half core box unit (1) and a right-half core box unit (2). A left-half core box unit combined vertical rib plate (5) is provided with a positioning pin (8). A door-shaped lock seat (9) is fixedly arranged on the external side surface of the left-half core box unit combined vertical rib plate (5), and a door-shaped clasp (10) is movably arranged on the door-shaped lock seat (9). A right-half core box unit combined vertical rib plate (6) is provided with a positioning pin sleeve, a locking block (11) is arranged on the external side surface of the right-half core box unit combined vertical rib plate (6), the positioning pin is inserted into the positioning pin sleeve movably, and the door-shaped clasp (10) is movably clamped with the locking block (11). The provided core box can improve the combination precision of an internal mould.

Description

technical field [0001] The invention relates to a tooling for approximate precision casting, in particular to a core box cast by a differential pressure casting machine. Background technique [0002] In order to meet the requirements of integration, high performance and precision of large structural parts, a large number of complex structural parts adopt casting molding process, and large structural parts are integrally cast. Generally, after the inner and outer tire molds are used to make resin sand molds, they are cast in differential pressure Machine casting. The inner tube mold is composed of multiple core boxes, and each core box is composed of a left half core box unit and a right half core box unit. The shafts are snapped together. Since the core box needs to be used repeatedly in casting, the left and right half core boxes need to be repeatedly plugged and separated, and the shift and deformation of the pin shaft on the core box unit often occur, resulting in the l...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a core box unit for precision casting with a guide positioning and locking mechanism, which solves the existing technical problems that the concentricity of the core box is out of tolerance and the concentricity of the mold is prone to deviation

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