Features and advantages of elastic pin coupling

Published: 2021-03-17

The elastic pin gear coupling is driven by the torque force generated by the mutual matching of internal and external teeth to drive the shaft to rotate. Generally, there are two structural types of drum gears and spur gears. The elastic pin gear coupling gears are coarse according to the standard. After processing, it needs to be modulated and carburized for finishing. Gears are generally processed by a CNC gear hobbing machine and a CNC gear shaping machine. After the gear is processed, the gear is locally high-frequency dipped, so that the entire processing process is basically completed.Elastic pin gear couplingDebugging is required during installation, and viscous oil or grease should be injected between the gears to ensure that the coupling gears are in contact.

The tooth modulus fit of the elastic pin gear coupling is calculated according to the theoretical formula, how many teeth correspond to how much modulus, and the tolerance fit requirements are extremely high, the fit gap is guaranteed to be within 5 wires tolerance, the elastic pin tooth style The tolerance clearance fit between the inner diameter of the inner tooth and the outer diameter of the outer tooth of the coupling is also particularly important. The bulge curve is mostly one arc, and three arcs are also useful. These circles are called bulge circles. In the arc bulge curve Among them, the center of the bulge circle is on the axis of the gear, some is not on the axis, the center of the bulge circle coincides with the center of the spherical surface of the tooth surface, and some do not coincide.

Generally, when designing elastic pin gear couplings, it is based on experience. Generally speaking, the requirements that the elastic pin gear coupling should meet are not required when the inclination angle between the shafts is relatively large. When edge contact occurs, the smaller the gear tooth's concentrated load, the better, and the curvature of the tooth surface is proportional to the circumference of the drum, so the drum radius is as large as possible, and the curvature radius of the drum curve is proportional to the single-sided thinning of the inner tooth. Therefore, the bulge radius should be as large as possible. The curvature radius of the bulge curve is proportional to the single-sided thinning of the internal tooth, that is, it is related to the tooth meshing gap. Insufficient thinning may cause interference, and excessive thinning may weaken it. The strength of the teeth, and the backlash will be large.

The heat treatment and machining requirements of elastic pin gear couplings, forgings should be pre-heated after forging to improve the structure and workability, rough machining, forging properties should be roughed before heat treatment, performance heat treatment, forgings should be carried out Quenching and tempering to achieve the required performance. After the performance is processed by heat treatment, the forging is processed to the size and surface roughness specified by the drawing provided by the buyer after the mechanical performance is qualified.

The elastic sleeve pin coupling is a new type of high-performance coupling made in my country. It concentrates on the advantages of the current standard elastic coupling with different structures, such as the advantages of the plum-shaped elastic coupling: the elastic element is squeezed and the structure Simple and highly reliable.

One of the most prominent advantages of the elastic sleeve pin coupling coupling is that it only needs to be centered and installed once. When replacing the elastic element, there is no need to move the half coupling, which can reduce auxiliary man-hours and improve production efficiency. It is especially suitable for axis alignment. It is difficult to install in the middle, and when it is required to minimize the auxiliary, it is necessary to provide production efficiency, especially for the difficult installation of the axis, and it is required to minimize the auxiliary working environment.The elastic sleeve pin coupling has good compensation performance for axial, radial and angular axis deviation, good vibration reduction performance, simple structure, stable and reliable operation, no noise, no lubrication, convenient maintenance, simple assembly and disassembly, and process Good performance, low cost, can be derived into a variety of structural situations, good versatility, wide application range, and easy to promote.The elastic sleeve pin coupling relies on the locking force of the pin group to generate the frictional moment on the contact surface, and compress the rubber elastic sleeve to transmit the torque.It is suitable for small and medium-power shafting transmissions with good rigidity of the installation base, high centering accuracy, low impact load, and low vibration reduction requirements.

Features and advantages of elastic sleeve pin coupling:

1. The elastic sleeve pin coupling relies on the locking force of the pin group to generate the frictional torque on the contact surface, and compress the rubber elastic sleeve to transmit the torque.It is suitable for small and medium-power shafting transmissions with good rigidity of the installation base, high centering accuracy, low impact load and low vibration reduction requirements.

2. The elastic sleeve pin coupling works by compression and deformation. Because the thickness of the elastic sleeve is thin, the volume is small, and the elastic deformation is limited, the elastic sleeve pin coupling can compensate the axis displacement and elasticity, but the axis displacement The allowable compensation amount is less and the flexibility is weaker.

3. The structure of the elastic sleeve pin coupling is relatively simple, easy to manufacture, no lubrication, no need to bond with metal vulcanization, easy to replace the elastic sleeve, no need to move the half coupling, with a certain degree of compensation for the relative deviation of the two shafts and damping Buffer performance.