Basic series and rotation of elastic coupling

The elastic coupling mainly has the following two basic series: spiral groove type and parallel groove type.Most of the flexible couplings are made of aluminum alloy, and some manufacturers also provide flexible couplings made of stainless steel.In addition to the stainless steel elastic coupling, it also increases the torque bearing capacity and rigidity, and can even reach twice that of similar products made of aluminum alloy.However, this increased torque and rigidity will be offset by increased mass and inertia to a corresponding extent.Sometimes the backside influence will outweigh its advantages, so that users can't stop looking for other forms of couplings.

XNUMX. Fixing of the expansion sleeve: tightening and fixing the account cover by tightening the four positioning screws on the end of the coupling. It is suitable for the connection and fixing of some stepping motors and servo motors with large torque, such as expansion sleeve diaphragm couplings. , Expansion sleeve plum coupling, expansion sleeve bellows coupling, expansion sleeve elastic coupling, etc.

XNUMX. D-shaped hole of elastic coupling is fixed: Generally, if the shaft of the motor is D-shaped, if the positioning screw cannot be fixed, the hole of the coupling can be processed into a D-shaped corresponding to the size of the motor shaft. The holes are fixed together with the positioning screws, so there is no need to worry about slipping.

XNUMX. Elastic coupling clamping screw fixation: Utilize the tightening force of the hexagon socket bolt to shrink the slit and clamp the shaft tightly.This method is convenient to fix and disassemble, and will not cause damage to the shaft, so it is a very common fixing method.

Fourth, the elastic coupling keyway type fixation: suitable for high-torque transmission, in order to prevent axial sliding, it is usually used together with set screw fixation and clamping screw fixation.

90. Elastic coupling positioning screw fixation: Two positioning screws have a gap of XNUMX; the fixed shaft is locked, the old-fashioned fixing method, because the front end of the screw contacts the shaft, it may cause damage to the shaft or difficulty in disassembly. .

Diaphragm couplings can not only give full play to the good application advantages and characteristics, but also exceed good specifications at the level of accurate price positioning. Nature can prevent everyone from appearing at the time of selection. Unexpected situations occur, and good advantages can be produced in the whole process of actual use, and the actual effect of the application can be fully exerted, and the economic development is also relatively good.When installing or disassembling the diaphragm coupling, it is necessary to pay special attention to the actual operation regulations of the specification, and it is necessary to pay special attention to many key points and difficulties. This will be better for the application of the event. It can prevent more serious damage, so for the whole process of all installation and disassembly, it is recommended that everyone can know the following common problems.Pay special attention to the proper and stable operating regulations of the diaphragm coupling. When installing the rolling bearing, all the dust must be scrubbed and cleaned. At the same time, a thin layer of automobile engine oil or applied technology grease must be applied. Preventing more serious friction or damage will endanger all the actual effects of the normal application of the diaphragm coupling, and will also cause various common failure problems during the entire application process.

When disassembling the diaphragm coupling, grasp the energy. When the disassembly and assembly are carried out, it is recommended that everyone should grasp the energy. First, carry out the disassembly and assembly in a straight line, and then use the wrench to carry out the adjustment. Not only can it be lighter Relaxed measures can also prevent various hazards caused by damage to mechanical equipment. At that time, disassembly and assembly must be carried out when the mechanical equipment is terminated. After the disassembly and assembly are completed, it is necessary to carry out a multi-angle inspection of the mechanical equipment. Adjustments can prevent harm to the actual effect of the application.

What should I pay attention to when the diaphragm coupling is rotating?

XNUMX. Due to the error of the axial installation, the diaphragm is bent and deformed along the axial direction.The displacement is loaded in the axial direction of the middle bolt hole, and the radial displacement and the axial displacement are fixed.The two middle holes at both ends are used to impose constraints, and the middle hole is used to bear the load.In this way, it is treated as a statically determinate simply supported mechanism.

XNUMX. Centrifugal stress caused by inertia during rotation. Assuming that the bolt and the coupling diaphragm are of the same material, the respective masses can be calculated. According to the position and the spiral angle, the centrifugal force can be calculated and acted on the total center of mass.

XNUMX. Bending stress caused by angular installation error.The diaphragm coupling can be solved according to the simplification of the figure below.Due to the actual installation error in the axial angular direction, the diaphragm is periodically bent and deformed along the axial direction, and it is the main reason that determines the fatigue life of the coupling diaphragm.

2. The centrifugal inertia force of high-speed machinery is important in the stress calculation of the structure. The centrifugal inertia force can be loaded according to the radial force F=(60∏n/2) XNUMXrp, and the direction is radially outward to fix the middle bolt hole. Radial displacement, circumferential displacement and axial displacement, there is no other load around.

XNUMX. Diaphragm coupling is used to connect the two shafts and transmit the torque to the components, and sometimes also serves as overload stability protection.This coupling is a fixed connection device, which cannot be disconnected at will when the machine is running normally, and it needs to be shut down to disconnect.

8. The force of the diaphragm coupling is divided into the membrane stress generated by the torque. Set the transmitted torque as T (Nm) and the total number of pieces as m. For XNUMX-hole bolts.