Sand shell mold for manufacturing blank of vehicle braking disc

Abstract

A sand shell mold for manufacturing the blank of a vehicle braking disc belongs to the field of manufacturing of car accessories, and comprises an upper mold and a lower mold; the junction surface between the upper mold and the lower mold is a poured parting surface of the braking disc; the upper mold comprises an upper mold plate and an upper cavity; the lower mold comprises a lower mold plate and a lower cavity; the lower mold plate is positioned at the periphery of the lower cavity; the lower cavity is formed inside the lower mold plate; the lower cavity is the same as a part below the parting surface of the braking disc in shape; and the size of the lower cavity is equal to the size of the part below the parting surface of the braking disc and the thickness of a sand shell. The sand shell mold has the characteristics that the production of the blank of the braking disc can be realized efficiently, materials and labors are saved, the mechanical processing capacity is reduced, casting flaws are reduced, the yield is improved, and the automatic production is easy to realize.

Description

technical field [0001] The invention belongs to the field of auto parts manufacturing, in particular to a sand shell mold used in a blank manufacturing method of an auto brake disc. Background technique [0002] Car brake disc is an important part of the car, it ensures that the car can be effective and durable when braking; in the original car, most of the drum brakes are used, because the disc brake system has high sensitivity and good braking effect , easy to repair and maintain, and gradually replaced the drum brake mode on modern cars; an important part of the disc brake system is the brake disc, which is installed on the hub and rotates with the hub. When braking is required, it depends on the installation The brake pads on the brake caliper are closed to clamp the brake disc to play the role of braking; the brake disc is mostly made of high-strength cast iron, because the brake disc needs to meet the requirements of smooth surface, high strength, not easy to deform, a...

AI Technical Summary

Problems solved by technology

[0002] Car brake disc is an important part of the car, it ensures that the car can be effective and durable when braking; in the original car, most of the drum brakes are used, because the disc brake system has high sensitivity and good braking effect , easy to repair and maintain, and gradually replaced the drum brake mode on modern cars; an important part of the disc brake system is the brake disc, which is installed on the hub and rotates with the hub. When braking is required, it depends on the installation The brake pads on the brake caliper are closed to clamp the brake disc to play the role of braking; the brake disc is mostly made of high-strength cast iron, because the brake disc needs to meet the requirements of smooth surface, high strength, not easy to deform, and light weight. , there is a vacant structure in the middle of the brake disc in order to reduce the weight of the brake disc and increase the heat dissipation capacity; the current manufacturing process of the brake disc is roughly divided into several stages. A model made of wood or aluminum, and then use the model to make a sand mold, and then pour it to form the blank of the brake disc; the brake disc blank is heat-treated and machined to form a finished brake disc; because most of the clay sand is used Or resin sand for sand casting, the precision is low, need to leave a large processing allowance, waste raw materials, the processing workload is large, and at the same time, the sand molding workload is large, the casting cycle is long, and the efficiency is low.

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