Diesel engine cylinder hole water jacket sand core reinforcing method

A water-jacketed sand core and diesel engine technology, applied in cores, additive processing, metal processing equipment, etc., can solve problems affecting the accuracy of sand core forming strength and shape, no solution found, and poor sand core adhesion. Advanced problems, to achieve the effect of simple processing, easy printing, and improved strength

CN107457363AActive Publication Date: 2017-12-12GUANGXI YUCHAI MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-12-12

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Abstract

The invention discloses a diesel engine cylinder hole water jacket sand core reinforcing method. The method comprises the following steps that (1) when a cylinder hole water jacket sand core is subjected to 3D printing, a printing supporting mechanism is additionally arranged at first, the cylinder hole water jacket sand core body is printed, and integral forming of the supporting structure and the cylinder hole water jacket sand core is achieved; (2) baking curing is conducted after printing forming; (3) a sand bone hole is longitudinally drilled in a water foot part of the cylinder hole water jacket sand core body; (4) a sand bone matched with the sand bone hole is selected and inserted into the sand bone hole to be fixed; and (5) the supporting structure in the sand core is removed, and the reinforced cylinder hole water jacket sand core with high precision and quality is obtained. The strength of the 3D printed air cylinder block cylinder hole water jacket sand core can be improved, the reinforced sand core can ensure the effect that the positions and shapes of the layers are not changed by dragging during printing, the forming strength and precision of the sand core are ensured, and the practice effect is good.
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Description

technical field

[0001] The invention relates to the technical field of 3D printing rapid prototyping preparation, in particular to a sand core reinforcement method for a diesel engine cylinder bore water jacket. technical background

[0002] The cylinder block of a diesel engine is one of the core components of the entire diesel engine. The production methods of the cylinder hole water jacket sand core of the cylinder block mainly include traditional mold design and manufacturing and 3D printing technology manufacturing. Due to the advantages of 3D printing technology in many aspects, it is gradually replacing the traditional mold design and manufacturing process. However, since 3D printing is formed by layer-by-layer accumulation, when the current 3D printing technology is used to print the sand core of the cylinder bore water jacket of a diesel engine layer by layer, it is easy to drag displacement between the layers of the cylinder bore water jacket core. , resulting in ...

Examples

Embodiment Construction

[0028] Such as Figure 1~3 Shown, a kind of diesel engine cylinder bore water jacket sand core reinforcement method, comprises the following steps:

[0029] (1) When 3D printing the cylinder hole water jacket sand core, adopt the 3D printing posture of the cylinder hole water foot of the cylinder hole water jacket sand core 4 facing upwards, first increase the printing boss-like support plate, and then print the cylinder hole The body of the water jacket sand core 4, and a cross-shaped support frame 3 is added to the cylinder hole part of the cylinder hole water jacket sand core 4; the boss-shaped support plate includes a bottom plate 1, and several A cuboid boss, the cuboid boss includes a transverse cuboid boss 2-1 and a longitudinal cuboid boss 2-2; the side of the transverse cuboid boss 2-1 is distributed on the base plate 1; The bottom surface of the longitudinal cuboid-shaped boss 2-2 is distributed on the bottom plate 1; at the same time, four transverse cuboid-shaped ...