Casting model

Abstract

The invention relates to a casting model, which is characterized in that: the bottom of the casting model, which is in contact with a model bottom plate, is provided with an embedded lug boss, and the lug boss is embedded into the model bottom plate; the lug boss and the upper plane of the model bottom plate form a parting surface, and the corner of the parting surface on the lug boss is provided with an inclined surface with a slope of 60 degrees; and the length of the bottom side of the inclined surface is 1.5mm, and a joint of the inclined surface and the parting surface is provided with an R1.5 fillet. Under the premise of unaffecting the size and the configuration of a casting, the model and the model bottom plate are designed into an embedded mode; and the corner of the parting surface is provided with the inclined surface with the slope of 60 degrees, and the inclined surface is a manually controllable large-slope flash. The structure is simple, the use is convenient, and sand burning, sharp corner and local tire falling phenomena are improved. The appearance quality of castings is improved, the fins, flashes and burrs of the castings are obviously reduced, the grinding amount can be reduced by over 80%, the production efficiency is increased by about 25%, the labor intensity of workers is greatly reduced, and the casting model is especially suitable for mass production on the crankshaft casting molding line.

Description

technical field [0001] The invention relates to a casting process tooling, in particular to a casting model. Background technique [0002] All foundries at home and abroad are producing some castings with irregular shapes and many sand cores, which are prone to casting defects and bring troubles to the processing of castings. The parting method of the casting model is very critical to the demoulding operation and the number of sand cores. The traditional model splitting method is to adopt plane splitting along the center line, split the whole in half, directly separate the model, keep the shape of the casting, and install the model on the formwork. Generally, the parting (type) surface is selected at the largest section of the casting. Such as image 3 , Figure 4 shown. image 3 It is a schematic diagram of a prior art model installed on a template. Figure 4 It is a schematic diagram of a sand mold in the prior art. In the prior art, there are sticky sand, sharp corne...

AI Technical Summary

Problems solved by technology

Workers polish with high labor intensity and heavy workload

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