The fixing method of the stainless steel coupling diaphragm and the considerations of the plum blossom coupling selection

The fixing method and characteristic analysis of the stainless steel coupling diaphragm:

XNUMX. Separate type: It is a fully separated shaft sleeve, which can achieve the purpose of fixing and disassembling without moving the equipment.

XNUMX. Clamping type: Utilize the tightening force of countersunk bolts to shrink the slit and clamp the shaft tightly.This kind of fixing and disassembling is more convenient, and will not damage the axis of Qiancheng.

XNUMX. Fastening bolt type: a low-cost and conservative fixing method.However, the direct contact between the front end of the bolt and the end center may cause damage to the shaft or difficulty in disassembly.

XNUMX. Semi-detachable type: One side of this type is a clamping-type bushing, and the other side uses a separate-type bushing. First fix one side of the shaft on the clamping-type bushing, and then install the shaft of the equipment end on the separate-type bushing In the bushing.

XNUMX. Keyway type: This type is basically the same as the fastening bolt type, and both are relatively conservative fixing methods. This type is generally suitable for transmission with a better torque. In order to avoid axial movement, it is generally the same as the fastening bolt type. Combination of holding type.

There are five main methods for fixing the diaphragm of stainless steel coupling: tightening bolt type, clamping type, separate type, semi-separated type, and keyway type.The permeability of different materials can vary up to thousands of times. For example, when high permeability materials are used as the material of the barrier sleeve, most of the magnetic flux announced by the outer rotor permanent magnet will be directly returned to the outer rotor from the barrier sleeve, and the coupling There are few magnetic proofs obtained on the outer surface of the rotor in the diaphragm of the device. This phenomenon is called magnetic shielding in electromagnetics.The greater the permeability of the barrier sleeve, the more severe the magnetic shielding, and the smaller the magnetic field obtained by the outer surface of the inner rotor.From the eddy current loss calculation formula, it can be seen that there is an exponential relationship between the eddy current loss Pwo of the coupling diaphragm and the thickness ε of the barrier sleeve, that is, the greater the thickness ε of the barrier sleeve, the greater the eddy current loss.When the conductivity γ increases, the value of the big fraction on the right side of the formula increases, and the value in the right bracket increases because the conductivity γ increases, and its value increases as the value of k1 increases, so the conductivity γ increases. The eddy current loss of the filter diaphragm is added.

Plum blossom coupling is a kind of coupling. It is widely used at present, but many people do not know the related knowledge of plum blossom coupling very well. Here is a brief introduction, I hope it will be helpful to you:

XNUMX. Feature of plum coupling:

The plum blossom coupling is processed by machining methods such as turning, milling, and broaching, and then undergoes overall heat treatment.Elastic pin couplings are generally elastic pin couplings, nylon rod pin couplings, and a simpler way of putting it is to connect two half couplings with N nylon rods.Can play a role in compensation.In order to determine sufficient mechanical strength, there is another type of claw plate on the market that is a casting, which can be mass-produced without processing loss.

XNUMX. Application range of plum coupling:

Plum couplings are used in CNC machine tools, CNC lathes, machining centers, engraving machines, CNC milling machines, computer gongs, metallurgical machinery, mining machinery, petroleum machinery, chemical machinery, lifting machinery, transportation machinery, light industry machinery, textile machinery, water pumps , Fans and other industries have universal applications.

At the same time, because the elastic body of the plum blossom coupling is generally composed of engineering plastics or rubber, the life of the coupling is also the life of the elasticity. The life of the general elastomer is 10 years, so the service life of the plum blossom coupling is still very long. long.The drum gear coupling has good cushioning and vibration reduction performance, and has a large range of axial, angular, and radial displacement deviation compensation capabilities. Due to the cooperation of engineering plastics and metal parts, it has good self-lubricating performance , It is an ideal approximate universal elastic coupling.The elastic pin coupling uses several pins made of non-metallic elastic materials, which are placed in the flange holes of the two halves of the coupling, and the two halves of the coupling are connected by the pins. The coupling has a simple structure and is easy to manufacture , It is more convenient to assemble, disassemble and replace the elastic element, without moving the two couplings.

The noise, vibration or oscillation of the plum blossom coupling after a period of time indicates that the coupling has been damaged.One reaction is that the quality of the coupling agent is not good or not.In fact, there are other reasons.

XNUMX. The actual use of the plum blossom coupling cannot meet the conditions of use (such as too low torque, too high speed)

XNUMX. The coupling is not installed correctly.

XNUMX. The buffer quality of the plum coupling is unqualified.

There are many factors that need to be considered in the selection of plum coupling, such as stability, price, etc. Refer to the characteristics of various types of couplings, etc., so are there other points to note?

XNUMX. The working speed of the plum blossom coupling and the centrifugal force caused by it.For high-speed drive shafts, couplings with good balance accuracy, such as diaphragm couplings, should be used, instead of eccentric slider couplings.

XNUMX. The size and nature of the torque to be transmitted and the requirements for the function of damping vibration.

XNUMX. Due to manufacturing, installation, load deformation and temperature changes, it is difficult to maintain strict and accurate alignment of the two shafts after installation and adjustment.Existence of the degree of directional displacement and skew angle.When the radial displacement is large, you can choose a slider coupling, and when the angular displacement is large or the connection of two intersecting shafts, you can choose a universal coupling.When the two shafts produce a large additional relative displacement during the working process, a flexible coupling should be used.