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CouplingThere are many types of models, and Oldham couplings and flange couplings are two of them respectively. In what situation should the Oldham slider be used? What is the appropriate size of the flange coupling? Flange coupling What is the scope of use of the shaft coupling? The following is a comparison of the two couplings, for reference only:
Oldham couplingThere are two main structural forms: ①The reaming hole uses bolts to realize the two-axis alignment and the bolt rod to withstand the extrusion and shearing to transmit the torque; ②The shoulder on one half coupling and the other The grooves on the half coupling are matched and centered.The bolts connecting the two half-couplings can be ordinary bolts of grade A and B, and the torque is transmitted by the frictional moment of the joint surface of the two half-couplings.
Advantages: It consists of two half couplings with grooves on the end faces and an intermediate disc with protruding teeth on both sides.Because the convex teeth can slide in the groove, the relative displacement between the two shafts during installation and operation can be compensated.The material of this coupling part can be 45 steel, and the working surface needs to be heat treated to increase its hardness.
Flange coupling is a rigid coupling. It connects two flanged half couplings to the two shafts with ordinary flat keys, and then connects the two half couplings into one body with bolts to transmit motion And torque.
Flange coupling(Also known as flange coupling) is the use of bolts to connect two flange (flange) disc type half couplings. The two half couplings are respectively connected to the two shafts with a key to realize the two shaft connection and transmit torque And sports.The flange coupling is simple in structure, convenient to manufacture, low in cost, reliable in operation, easy in assembly and disassembly, and maintenance, and the transmission torque is large, which can ensure high centering accuracy of the two shafts. It is generally used for stable load. High-speed or high-precision shafting transmission.The flange coupling does not have radial, axial and angular compensation performance. If the centering accuracy of the two shafts cannot be guaranteed during use, it will reduce the service life, transmission accuracy and transmission efficiency of the coupling, and cause vibration And noise.The material of the flange coupling can be gray cast iron or carbon steel, and cast steel or forged steel should be used under heavy load or when the peripheral speed is greater than 30 m/s.
Disadvantages: Flange couplings have high requirements for the neutrality of the two shafts. When the two shafts have relative displacement, they will cause additional loads in the machine parts and worsen the working conditions. This is its main disadvantage.
Advantages: However, due to its simple structure, low cost and large torque transmission, it is often used when the speed is low, no impact, the shaft has high rigidity, and the neutrality is good.