Who knows what the hub unit does and what it uses to connect which spare parts in the car

Power is transmitted to the wheels, and only with the hubs can the wheels be connected. It connects the propeller shaft with the wheel. Some wheels are also equipped with brakes. It's called hub brakes.

Wheel bearing is used in the axle of the automobile to bear the load and provide precise guidance for the rotation of the wheel hub, both axial load and radial load, is an important part of the load and rotation of the car.

The function of the automobile wheel hub unit is to bear the load and provide precise guidance for the rotation of the wheel hub, which is a very important component to bear both axial and radial loads. Automobile wheel hub unit is developed on the basis of standard angular contact ball bearing and tapered roller bearing, the two sets of bearings as a whole, with good assembly performance, can omit clearance adjustment, light weight, compact structure, large load capacity, can be pre-loaded with grease for sealed bearings, omitted external wheel seal and free from maintenance and other advantages, has been widely used in cars, in the truck also has a trend of gradually expanding the application.

The traditional bearings for automobile wheels are composed of two sets of tapered roller bearings or ball bearings, and the bearings are installed, oiled, sealed and the clearance adjustment are carried out in the automobile production line. This structure makes it difficult to assemble, costly, and unreliable in automobile production plants, and the bearings need to be cleaned, oiled and adjusted when the car is maintained at the repair point.

Then the brake works by converting energy. First of all, there are two types of brakes in automobiles: disc brakes and drum brakes, both of which work by converting mechanical energy into heat energy to reduce speed. Secondly, if you pay a little attention, we will find that this process is completely opposite to the role of the engine.

If a car accelerates to 100 km h with energy from burning gasoline, the brakes must convert this mechanical energy into heat. To be precise, it is the brakes that function by acting on the wheels. First of all, the brakes prevent the wheels from turning, which converts mechanical energy into heat.

On the other hand, when the rotation of the wheels is hindered, there is a slippage between the wheels and the road surface, which also converts the mechanical energy into heat energy. As a result, the wheels of a car that has just stopped will heat up in addition to the brakes.

The function of the automobile wheel hub is: the part of the axle is installed to support the tire, cushion the external impact, realize the contact between the tire and the road surface, and ensure the driving performance of the vehicle.

Gravity casting, gravity casting is to pour the liquid alloy into the casting mold to cool and form, due to the simple manufacturing process, the casting mold is durable, and it has become the lowest cost manufacturing method. But the quality is not very good, because the parts of the hub are not necessarily evenly distributed, and the internal molecular pores of the metal are larger, and the strength is reduced a lot.

Low-pressure casting, low-pressure casting is to press the liquid alloy into the casting mold with a small pressure, so that the distribution of molecules is even, there are fewer sand holes, and the shape can be more complex and refined. The density of the metal liquid is guaranteed, and the strength of the solidified metal is also guaranteed. The process of low-pressure casting is all completed by machinery, and the yield rate of casting molding is high, which is very suitable for mass production.

Automotive wheels are mainly divided into steel wheels and alloy wheels in terms of materials. Steel wheels are rolled and stamped into blanks, which are then combined through processes such as welding. Alloy wheels are generally aluminum alloys, and the forming methods are divided into casting molding, casting + spinning forming and forging molding.

The manufacturing technology of automobile wheel hubs generally includes forging, casting, and spinning technologies.

Brother, you first look at the construction of the car wheel.

The inside of the wheel hub is connected to the transmission shaft, which is fastened by a large screw, and some car screws will also wear a clip to prevent the screw from moving, and then a hub cover is set outside, which looks more beautiful. Moreover, the cover has the effect of rust and waterproof on large screws, because in this way, water is not easy to corrode the screws.

That's all, haha.

It is the decoration on the outside of the tire fastening nut, with some logos on it, which has no practical effect, mainly to play a decorative effect and show the unique style of the vehicle.

The three protruding paddle-like objects are also easy to remove. If you look closely, the profile shape of the paddle is V-shaped, and according to the principle of aerodynamics, negative air pressure will be formed during the rotation of the wheel, so that the paddle has a tendency to get close to the hub and is not easy to fall off.

In the '50s and '70s, during the hippie era, automakers designed and built a lot of exaggerated models, such as exaggerated decorations on the bonnet, exaggerated colors on the side panels, and exaggerated protruding rear wings. It's no surprise that there are also accents on the wheels that show personality and style.