Automobile Drum Brake Gear Metal Injection Molding MIM Parts

Principle

Simply speaking, drum brakes are brake devices that use the stationary brake pads in the brake drum to rub against the brake drum that rotates with the wheel to generate friction to reduce the rotation speed of the wheel.

When the brake pedal is pressed, the force applied by the foot will cause the piston in the master brake cylinder to push the brake oil forward and generate pressure in the oil circuit. The pressure is transmitted to the brake cylinder piston of each wheel through the brake oil, and the piston of the brake cylinder pushes the brake pad outward, causing the brake pad to rub against the inner surface of the brake drum, and generating enough friction to reduce the rotation speed of the wheel to achieve the purpose of braking.

Advantages

1. Drum brakes have good self-braking effect. As the brake pads are stretched out, the wheel rotates and the stretched brake drum is twisted at an angle (of course, it will not be so large that you can easily see it). The greater the external tension of the brake pads (brake braking force), the more obvious the situation is. Therefore, large vehicles generally use drum brakes. In addition to the lower cost, the difference between drum brakes of large vehicles and small vehicles may be that large vehicles use pneumatic assistance, while small vehicles use vacuum assistance to help brake.

2. The manufacturing cost of drum brakes is at a lower technical level, and it is also the first to be used in the brake system, so the manufacturing cost is lower than that of disc brakes.

3. The handbrake mechanism is easy to install. Some models with disc brakes on the rear wheels will install the handbrake mechanism of drum brakes in the center of the brake disc.

Disadvantages

1. The diameter of the brake drum of the drum brake will increase after heating, which will increase the travel of the brake pedal, and it is easy to have a situation where the brake response is not as expected. Therefore, when driving a vehicle with drum brakes, try to avoid continuous braking to cause the brake pads to produce thermal decay due to high temperature.

2. The brake system reacts slowly, and the brake pedal force is difficult to control, which is not conducive to high-frequency braking.

3. The structure is complex and has many parts, and the brake clearance needs to be adjusted, making maintenance difficult.

Development trend

Due to the rapid increase in vehicle performance and driving speed, disc brakes have become the mainstream of the current brake system in order to increase the stability of vehicle braking when driving at high speed. Because the brake disc of the disc brake is exposed to the air, the disc brake has excellent heat dissipation. When the vehicle brakes suddenly at high speed or brakes multiple times in a short period of time, the braking performance is less likely to decline, allowing the vehicle to obtain a better braking effect to enhance the safety of the vehicle. And because the disc brake has a fast response and is capable of high-frequency braking, many models use disc brakes with ABS systems and VSC, TCS and other systems to meet the needs of such systems for rapid braking

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was founded in 1997 and is a manufacturer and technical solution provider focusing on metal powder injection molding (MIM) and investment casting and forging products. The company is located in Qinhuangdao High-tech Zone. It has a strong R&D team and technical strength, providing customers with fast and effective solutions and stable product supply.

Since its establishment, the company has always adhered to the principle of customer-oriented, quality-first, independent innovation, and continuous improvement. Technology-first development policy.

The company's main business is the research and development, design, production and sales of metal product structural parts. The products can be widely used in key application fields such as consumer electronics, medical devices, and automobiles. It has advantages and rich experience in product research and development, mold development, process design, product manufacturing, quality control, etc.

The company has a stable core team, a strong technical team, and has introduced advanced equipment to form the core competitiveness of MIM products in the industry and become a strategic partner of MIM products for international customers.