Friction clutches are devices that are designed to transmit rotational motion in a mechanism. Quite often, elements of this type are found in a car.
They are also used in drives. The main advantage of the modifications lies in their compactness. There are many varieties of couplings. To find out more data about them, you should familiarize yourself with the drawings of the model.
Device model
A conventional clutch includes a drum and a set of discs. Directly the body is used cup-shaped. Many modifications are made with clamping plates. Their fingers are fixed at the base of the device. There is a plug for connecting the model. The torque of the gear is provided thanks to the bearings.
How does the clutch work?
The principle of operation of friction clutches is based on the transmission of rotational motion from the shaft. This process takes place thanks to the drum. It is tightly connected to the disks that control it. To hold the mechanism along the axis there is a spring. The standard model is fixed to the shaft through a fork. It is also worth noting that the rotation speed depends on the type of bearing.
Model Types
Disc, cone and cylindrical modifications are distinguished in shape. In a separate category include multi-disc models. There are devices with one or more reels. They differ in size as well as in rotation ratio.
Disk devices
The most common are disk friction clutches. They use a big drum. In this case, the pressure plate is mounted through the rack. Many models use several screeds. It is also worth noting that there are devices with fingers. They have a fairly high friction force. These devices can be found in machines.
Cone Modifications
The friction cone clutch (drawing is shown below) is suitable for drive devices. She has several drums that connect through the plate. Plugs are used in different sizes. It should also be noted that cone modifications are well suited for cars, often mounted on clutch mechanisms. The fingers in this case are mounted at a slight angle. Driven plates are well polished and able to rotate at high speed.
Cylindrical devices
A cylindrical friction clutch is very rare in production. Most often, models are mounted on cranes. Leading drums are used for large widths. At the same time, the racks differ in size. Some experts point to the strength of the springs. Couplings of this type can withstand large axial loads. They may have one or more bearings. The coupling fingers are fitted in a large size.
Features of multi-disc models
The multi-plate friction clutch includes a wide drum as well as three working plates. Coupling fingers are used on the lining. Many models have several supports. It is also worth noting that there are modifications to two springs. They have high downforce, large diameter forks are used. Most often, devices are mounted on drives. Cases are used conical shape.
Single drum models
Single drum friction clutches are made with one or more plates. The compression force in this case is regulated by the fingers. Some experts say that the modifications are suitable for cranes. However, they are still found in cars. It is also worth noting that the models withstand large overloads. Driven discs are polished, able to rotate quickly. The forks are most often installed at the base of the mechanism.
Multi-drum Models
Quite often in production there is a safety clutch (friction) with several drums. Among the advantages of the modification, it is worth noting good stops and high downforce. Many models are able to withstand heavy loads. Mechanisms rarely have pads. It is also worth noting that the drive gears are used in large sizes. Some couplings work from stretching fingers. They have two racks.
In this case, the plug for connection is located in front of the structure. Devices are not suitable for drives because they have a slow start. It is also worth noting that there are models with a squeezing disk. The stem in this case is located in a horizontal position. The fingers are used in this small size. The devices have a high compression force. Drums can rotate in only one direction. The drive disc may be located behind or in front of the release plate.
Sleeve models
Sleeve friction clutches are only suitable for clutch mechanisms. Some modifications are used in drive devices. Models can use multiple partitions. It is also worth noting that the coupling fingers are mounted above the release spring. The plates are in a horizontal position. The sleeve is mounted between the partitions and plays the role of a shock absorber.
If we talk about the shortcomings, it is worth noting that the models have a small downforce. Also, models are not able to maintain high shaft speeds. Devices are not suitable for drives.
The advantages of flange devices
The advantages of flange couplings lie in the fact that they have low drum wear. Disks are most often fixed behind a rack. Partitions are small in size. Clamping plates are used to hold the rack. Springs are most often fixed at the bottom of the couplings. Some models work with drives. Connection to the shaft is through a plug. It is also worth noting that there are modifications with wide squeezing discs. They have conical bodies and are very compact.
Hinge Models
Hinged couplings are able to operate in drive devices of different capacities. Modifications are distinguished by wide partitions and short fingers. Disks are fixed at the base of the plate. Cases are made in different sizes. The coupling fingers are located in front of the rack. Partitions can be with grooves. It is also worth noting that the strength of the torque depends on the size of the drum. As a rule, he uses a wide wall. At the same time, the edges are sharpened and do not rub against disks. This was achieved by installing hinges.
Cam devices
Friction clutch with cams is suitable for machine tools. Many models withstand a significant load, but in this case, much depends on the drum. On some devices, it is fixed between the partitions. It should also be noted that there are models on the plates. A conical housing is used to hold the parts.
The most common are couplings on squeezing discs. They use drums of small width. The rods in this case are connected with forks. Many models are used in clutch mechanisms. The coupling fingers can be fixed at the base of the partitions. The driven drum is practically not erased. Small fingers are standardly used.
Drive Models
The friction clutch for drives can operate with one or more drums. In this case, the rods are made under small shafts. Drums are installed in horizontal position. Many modifications are equipped with aluminum alloy wheels. It is also worth noting that there are modifications with spring devices.
If we consider the standard modification, then it has two squeezing discs. Between them there is only one plate. The sleeve in this case is attached to the stem. In order to preserve the drum bearings are installed. If we consider models for large drives, then they have a squeezing disk with a partition. The driven drum works on a wide rack. Pressure springs can be with ties. The forks at the couplings are fixed at the base. Some models are made with conical bodies. In addition, compact working plates are used for couplings.