Workblank manufacturing method of automobile brake disc

Abstract

The invention discloses a workblank manufacturing method of an automobile brake disc, and belongs to the field of automobile accessory manufacturing. The method comprises the following steps that firstly, according to design paper of the brake disc, and a precoated sand shell mold and a sand core mold are designed and manufactured; secondly, the sand shell mold or sand core mold is placed on a sand shell or sand core automatic forming machine to manufacture a precoated sand casting sand shell model and a sand core model; thirdly, pouring is carried out; and fourthly, a casting is taken out and cleaned. The beneficial effects that production of the brake disc workblank can be efficiently achieved, materials and manpower are saved, mechanical allowance is reduced, casting defects are reduced, the yield is improved, and automation production is easily achieved are achieved.

Description

technical field [0001] The invention belongs to the field of auto parts manufacturing, in particular to 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, and light weight. , there ...

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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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