Axle core manufacturer: What are the common faults of the rotating shaft?

Axle core manufacturer: What are the common faults of the rotating shaft?

Axle core manufacturer: As the name implies, the shaft is the shaft that must be used to connect the main parts of the product to withstand bending moment and torque during rotation. In rotating work, the shaft that must be used to connect the main parts of the product and bear the bending moment and torque at the same time is called the rotating shaft. Common rotating shafts are: mobile phone rotating shaft (flip cover or rotating screen mobile phone); Notebook computer shaft; Portable DVD shaft; Led desk lamp rotating shaft; LCD rotating shaft; GPS and other car brackets, rotating shafts, etc.

Axle core manufacturer: common faults of rotating shaft are as follows:

Shaft wear is a common equipment problem in the use of shafts, which is mainly caused by the metal characteristics of the shaft: although the metal has high hardness, its toughness (cannot be restored after deformation), impact resistance and fatigue resistance are poor, and it is easy to cause adhesive wear, Abrasive wear, fatigue wear, fretting wear, etc. Most shaft wear is not easily detected. Only when the machine is in high temperature, large beating range and abnormal noise will it be noticed. However, when people found out, most of the drive shaft had worn out, causing the machine to stop running.

Shaft core manufacturers: In China, repair welding, bushing insertion, pitting and other methods are usually used for shaft wear. However, when important officials are made of 45 steel (quenching and tempering), if only surfacing is used, welding internal stress will occur. Under heavy load or high speed operation, the shaft shoulder may crack or even break. If stress relief annealing is used, the operation is difficult, the processing cycle is long, and the maintenance cost is high. When the material of important officials is HT200, the welding of cast iron is not ideal. Some companies with high maintenance technology will use brush plating, laser welding, micro-arc welding and even cold welding. These maintenance techniques are often demanding and costly.

Axle core manufacturers: the latest maintenance methods:

Polymer composite materials technology and nanotechnology are widely used in developed countries. Polymer technology can be operated on site, effectively improving maintenance efficiency and reducing maintenance costs and strength. Among them, the United States and China technology system is widely used. Compared with the traditional technology, the polymer composite material not only has the strength and hardness required by the metal, but also has the concession (variable relationship) that the metal does not have, which can ensure the size matching between the repair part and the matching part to a large extent. At the same time, the composite material can effectively absorb the external impact by using its comprehensive advantages of compression, bending and ductility, greatly resolve and offset the radial impact of the bearing on the shaft, avoid the possibility of clearance, and avoid the secondary wear of the equipment caused by the increase of the clearance.

Axis core manufacturer: After the completion of the basic module of the spindle, further processing is started according to the prepared flow chart to reach a certain level of technology.

Axle core manufacturer: hollow structure interference: hollow structure shaft: its structure is very simple and easy to produce. The factor that affects the torsion is the interference between the male and female shafts, but the interference should not be too large in a certain size range, otherwise it will cause structural damage. Therefore, more precise dimensional tolerances are required to meet the required interference requirements.

Shaft core manufacturer: Strength of hollow structure: For practical torque value and convenience of assembly, the solid part of the male shaft is removed to form a hollow male shaft, which is called a hollow structure. The strength of the hollow structure also has a great influence on the torsion. The main method of controlling the torque range is to use the interference value and strength design of the hollow male shaft to meet the appearance and size requirements of the female shaft.