Inspection of diaphragm coupling after assembly and selection of plum coupling

Published: 2018-04-20

After the diaphragm coupling is assembled on the shaft, the verticality and coaxiality of the gear coupling and the shaft should be carefully checked.Generally, two dial indicators are set on the end face and outer circle of the gear coupling. When the shaft is rotated by the turning gear, observe the value of the total runout (including end runout and radial runout) of the gear coupling to determine the coupling The perpendicularity and coaxiality of the shaft and the shaft.Different speeds and different types of couplings have different requirements for full runout. After the coupling is assembled on the shaft, the deviation value of the full runout of the coupling is within the tolerance range required by the design. This is a gear coupling One of the main quality requirements for device assembly.There are many reasons why the total runout value of the gear coupling does not meet the requirements, and the error may be caused by machining.For on-site assembly, the coupling and the shaft are out of axis due to improper assembly of the key.The correct installation of the key should make the two sides of the key closely fit the wall of the keyway. Generally, the coloring method is used for inspection during assembly. If the fit is not good, a file or a spatula can be used to meet the requirements.There is generally a gap at the top of the key, about 0.1-0.2mm.High-speed rotating machinery has high requirements for the coaxiality between the coupling and the shaft. A single key connection cannot obtain a high coaxiality, and a double key connection or a spline connection can achieve the coaxiality between the two.

The plum blossom coupling is a common type of coupling. Many people choose the plum blossom coupling when choosing a coupling. The plum blossom coupling has a simple structure, a small number of parts, and a relatively small radial dimension without lubrication. , The elastic element has a high pressure bearing capacity. Except for the double-flange quincunx elastic coupling, we need to move the semi-coupling axially when replacing the vulnerable quincunx elastic coupling, otherwise the replacement will fail. , The position will cause deviation. Although the plum blossom coupling is a small object, it has great functions.

This kind of coupling has the ability to compensate for the relative offset of the two shafts. Many couplings have a very good effect. The sales of diaphragm couplings and plum couplings in the market are very good. We are very concerned about this kind of coupling. All of them are dependent. The existing plum couplings all adopt CNC lathe and CNC machining procedures, and the products have fine workmanship, high precision and usability.This is also the theoretical basis for the design of sliding bearings.