Application of manufacturing method of machine body metal-wood structure complex mold

Abstract

The invention belongs to the technical field of casting molds, and discloses a manufacturing method and application of a machine body metal-wood structure complex mold. A method of a structure combining frame removal and disassembly, rail split, metal integral embedding and dovetail metal movable mounting is adopted to integrate multiple different functional parts of a machine body crankshaft cavity, a cylinder hole and a bottom foot plate for core manufacturing; and core outlet heads on two side surfaces of a mud core cylinder hole and a crankshaft observation window are positioned on an outer mold to realize accurate mold size. The manufacturing method effectively integrates multiple different functional parts of the machine body crankshaft cavity, the cylinder hole and the bottom foot plate for core manufacturing; and the core outlet heads on two side surfaces of the mud core cylinder hole and the crankshaft observation window are positioned on the outer mold to realize accurate size. The overall positioning of key size elements of different parts of a machine body is realized. The manufacturing method solves the size problems of high size control difficulty in the box matchingprocess of a large complex machine body, thin walls of a camshaft and the crankshaft observation window after machining, lug drilling, drilling deviation from the center and the like.

Description

technical field [0001] The invention belongs to the technical field of casting moulds, and in particular relates to a manufacturing method and application of a complex mould, which has a gold-wood structure for a machine body. In particular, the invention relates to a manufacturing method and application of a large-scale diesel engine body with a complex metal-wood structure mold. Background technique [0002] At present, the MAN32 / 40 body is a large and complex iron casting. The maximum outline size of the body is 5730×1590×1761. The casting deviation is required to be implemented in accordance with GTB18 DIN1685 and 1686. The body has a compact structure and high dimensional accuracy requirements. The cylinder head bolt holes of the body and the main bearing bolt holes, and the lubricating oil channel of the main bearing are integrated and connected from the top surface of the cylinder hole to the bearing seat, and from the fuel side to the intake and exhaust sides, formin...

AI Technical Summary

Problems solved by technology

[0004] (1) In the prior art, multiple different functional parts such as the crankshaft cavity, cylinder bore, and foot plate of the machine body are not integrated into the core making, resulting in inaccurate positioning and size of the core outlet on the outer mold on both sides of the cylinder bore of the core and the observation window of the crankshaft

[0005] (2) The existing technology does not improve the required dimensional accuracy of the body through the combination of the frame-off type and the disassembly type, the track splits, the metal overall inlay, and the dovetail metal loose-fitting structure.

[0006] (3) In the existing technology, the characteristics of the frame-off (fixed) and disassembled (moved) structures are not fully utilized, resulting in low accuracy of the mold size

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