3D printing sand core structure for rapidly developing cylinder cover casting and manufacturing method thereof

Abstract

The invention relates to a 3D printing sand core structure for rapidly developing a cylinder cover casting. Two lower side edge sand cores of the structure are connected into a whole and are connectedwith a bottom plate sand core, a peripheral core head of an air inlet channel sand core, a peripheral core head of an exhaust channel sand core and a peripheral core head of a lower water jacket sandcore into a whole to form a first sand core set; two upper side edge sand cores are connected into a whole and are connected with a top cover sand core and a peripheral core head of an upper water jacket sand core into a whole to form a second sand core set; observation hole sand cores are arranged on the bottom plate sand core and the top cover sand core; and an exhaust structure for exhaustingair during casting pouring is arranged on the bottom plate sand core. According to the 3D printing sand core structure, the 3D printing sand core technology is adopted, part of the sand cores are combined together, a main body is formed by the two sand cores, the number of the sand cores is reduced, the core manufacturing speed is increased, the development difficulty of the casting is reduced, the development speed of the casting is increased, the 3D printing sand core structure is suitable for development of various cylinder cover castings, and the low manufacturing difficulty and the shortperiod of the cylinder cover castings can be achieved.

Description

technical field [0001] The invention belongs to the technical field of cylinder head casting, and relates to a 3D printing sand core structure for rapid development of cylinder head castings and a manufacturing method thereof. Background technique [0002] For cylinder head castings, due to the complex product structure and the large number of sand cores, a large number of tooling is required. The structure of the sand core is complex, which makes the design and manufacture of the tooling difficult and the cycle long. Some complex sand cores (such as water jacket sand cores) have high sand core waste during production; the casting process is complex, and various factors such as the positioning accuracy of the sand core, the exhaust of the sand core, and the gating system of the casting need to be considered; The debugging process is complicated and the development is difficult. In addition, due to the uncertainty of the new product structure, once the product is changed, i...

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Problems solved by technology

For new product development, the investment is high, the development is difficult, and the cycle is long

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