Lower half part sand shell lower die of automobile rear suspension support

Abstract

The invention discloses a lower half part sand shell lower die of an automobile rear suspension support, and the lower half part sand shell lower die is suitable for an automobile rear suspension support lower half part sand shell die. The lower half part sand shell lower die comprises a die plate, a die cavity, a positioning hole and a half sand inlet. The die plate is located on the periphery of the die cavity and made of steel and iron materials. The die cavity is formed in the die plate, and the shape of the inner surface of the die cavity is the same as the appearance of a lower half part of the automobile rear suspension support. The positioning hole is formed in the die plate and corresponds to a positioning hole in a lower sand shell upper die. After the positioning holes are aligned, the thickness of a sand shell is formed through a lower half part upper die cavity and a lower half part lower die cavity. The half sand inlet is formed in the die plate edge position between the two die cavities, and a sand inlet is formed through combination of the half sand inlet and a half sand inlet in a lower half part upper die. The lower half part sand shell lower die has the function that the lower half part sand shell lower die can be combined with the lower half part sand shell upper die of the automobile rear suspension support for manufacturing of a lower half part sand shell of the automobile rear suspension support.

Description

technical field [0001] The invention belongs to the field of vehicle production, and in particular relates to a sand shell lower mold of a sand shell mold for the lower half of an automobile rear suspension support in a blank manufacturing method of an automobile rear suspension support. Background technique [0002] The car rear suspension bracket is a part set on the rear axle of the car to carry the shock absorber and the suspension device. Due to the complicated structure and shape, most of its manufacturers use metal casting to produce blanks, and then perform machining to facilitate Obtain better stability and machining accuracy; Most of the existing automobile rear suspension brackets are cast with cast iron. The casting method is to first select the appropriate parting surface according to the design drawings of the automobile rear suspension A combined model with the same shape as the suspension bracket. Most of these combined models are bounded by the parting surfa...

AI Technical Summary

Problems solved by technology

[0002] The car rear suspension bracket is a part set on the rear axle of the car to carry the shock absorber and the suspension device. Due to the complicated structure and shape, most of its manufacturers use metal casting to produce blanks, and then perform machining to facilitate Obtain better stability and machining accuracy; Most of the existing automobile rear suspension brackets are cast with cast iron. The casting method is to first select the appropriate parting surface according to the design drawings of the automobile rear suspension A combined model with the same shape as the suspension bracket. Most of these combined models are bounded by the parting surface as the joint surface of the combined model. Most of these models are made of wood or aluminum for handling and processing; second, put the model into the sand box , fill in the casting sand and tamp it down, separate the sand box and take out the model, a cavity with the same shape as the model is formed in the middle of the sand in the sand box, and then make the casting channel and riser to complete the sand mold making before casting ;Thirdly, after the sand mold is properly dried, close the sand box, pour the casting metal liquid from the casting channel; fourth, remove the sand box after cooling, break the sand mold, take out the casting, take out the gate and Riser, the production of the blank of the rear suspension bracket of the automobile is completed; when the molten iron is poured into the sand mold, the molten iron has an expansion force on the sand mold, and the sand mold is relatively soft, which will cause the shape of the inner cavity of the sand mold to change, and this change It is uncertain, which causes the shape and size of the cast blank to be uncertain; due to the characteristics of the above process, the casting method has a large amount of labor for the workers to operate, high requirements for the skilled operation skills of the workers, a large working area, and a poor working environment. , large dust, high roughness value of casting surface material, large amount of reserved processing, waste of raw materials, easy deformation, low qualified yield and other defects

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