Basic working principle of the hydraulic braking system in internal high-pressure forming technology

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Speed has given cars new life, yet today our cars are still unable to reach extreme speeds. Why is that? Does it mean that with today’s technology, humans are still unable to create cars that can exceed the speed of sound? Then how were those supersonic planes and rockets created? http://p3.pstatp.com/large/pgc-image/a006ffb66af544e49987bea353fa1f24 Actually, that’s not the case. With today’s science and technology, it is entirely possible to create faster cars, but why isn’t this done? It’s not because the technology isn’t advanced enough; rather, it’s because the top speed of a car is limited by its braking performance. Without braking, there is no speed control system – a set of specialized devices that enable the reduction of a vehicle’s speed. This is also the system that drivers care about the most, as it is directly related to driving safety. Based on the transmission of braking energy, braking systems can be classified into mechanical, hydraulic, pneumatic, electromagnetic, and combined types. Here, I will mainly explain the basic working principle of the hydraulic braking system. Hydraulic braking systems use hydraulic fluid to convert the force exerted by the driver through the brake pedal into hydraulic pressure, which is then transmitted via pipes to the wheel brakes. The wheel brakes convert this hydraulic pressure into mechanical force that causes the brake shoes to move apart, resulting in friction between the brake shoe pads and the brake drum (converting mechanical energy into heat energy and thus dissipating it), thereby generating a torque that prevents the wheels from rotating. When the driver presses the brake pedal, a push rod drives the piston in the master brake cylinder, causing the brake fluid pressure to increase. This hydraulic pressure is transmitted through pipes to the brake calipers; the pistons in these calipers press the brake pads against the brake drums under the force of the brake fluid, thereby creating braking action. The degree of deceleration or stopping of the wheels depends on the amount of force applied by the driver to the pedal. When the driver releases the pedal, the brake shoes and caliper pistons return to their original position due to the action of the return springs, the brake hydraulic pressure returns to the master cylinder, and the braking is released. http://p1.pstatp.com/large/pgc-image/cb3991ae8dc1403fb72f8bc5750e081b Drum brakes: Drum brakes mainly consist of brake calipers, brake shoes, brake drums, friction pads, return springs, and other components. It primarily works by using a hydraulic mechanism to cause the friction pads to come into contact with the inner surface of the brake drum that rotates along with the wheel, thereby producing a braking effect. http://p9.pstatp.com/large/pgc-image/b63f2c4305194b70a5052daa27dc57e0 Disk brakes: Also known as disc brakes, they are primarily composed of a brake disc, brake calipers, friction pads, slave cylinders, hydraulic hoses, and other components. A disc brake applies pressure to the calipers through a hydraulic system, causing the brake pads to come into friction with the brake disc that rotates along with the wheel, thereby achieving braking. http://p3.pstatp.com/large/pgc-image/a039d214dc95433fb75a5256da085ef4 Unlike closed drum brakes, disc brakes are open-type. The heat generated during braking can be dissipated quickly, resulting in excellent braking performance; it is now widely used in cars. Features of hydraulic braking: (1) Fast response, virtually no lag, and good follow-up performance. (2) During braking, the braking force is distributed fairly evenly between the left and right wheels, resulting in gentle braking and smooth driving. (3) Energy-saving, with low friction losses and high work efficiency. (4) Simple structure, easy maintenance, and low cost. (5) The unsprung mass is light, resulting in good driving comfort and ease of use. http://p1.pstatp.com/large/pgc-image/eaed1b3c561044d4934a5bdb9f966342 Finally, it should be noted that when we brake, the firmness of the pedal feel and the distance the pedal travels are all adjusted by the manufacturer. A good braking system requires not only stable and reliable components, but also the manufacturer’s ability to tune the interaction between these components. The editor believes that, thanks to the widespread use of hydroforming technology in the field of vehicle lightweighting, it is now possible to replace traditional stamping and welding processes. This approach not only reduces the weight of most automotive components but also increases their strength and stiffness, thereby enhancing their structural stability. Reliable automotive components require professional manufacturing equipment in order to achieve their best performance.