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AboutJulu County Binhao Transmission Equipment Co., Ltd. was founded in 2015. Binhao Transmission Co., Ltd. is located in Julu County Industrial Park, covering an area of 30 acres, with a standardized factory building of 12,000 ..
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ProductsThe company mainly produces ML plum blossom couplings, NL gear couplings, XL star couplings, GIICL drum gear couplings, bell housings, plum blossom pads, etc. There are more than 20 series, More than 200 varieties..
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NewsBased on the technology mastered by Binhao Transmission Technology Co., Ltd. in Julu County, ordinary steel has been turned into a mechanical accessory coupling after nearly ten processes such as blanking, finishing turning..
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HumanFor more than ten years, the company has been paying attention to the construction of corporate culture, standardized operation and innovative development, and has made every effort to build an efficient management team...
Detailed explanation of the selection steps of the coupling
Release Time:
Apr 13,2023
Regarding the selection of the coupling, in fact, the overall steps are not particularly complicated, just need to figure out which selection operations we need to complete in each step and pay attention to the influencing factors of the selection. The following will introduce the specific steps and some precautions for coupling selection.
Regarding the selection of the coupling, in fact, the overall steps are not particularly complicated, just need to figure out which selection operations we need to complete in each step and pay attention to the influencing factors of the selection. The following will introduce the specific steps and some precautions for coupling selection.
1. Determine the coupling type
The motor types and system characteristics applicable to different types of couplings are quite different. The more common types of couplings include diaphragm couplings, plum blossom couplings, parallel couplings, cross ring couplings, rigid couplings and so on. Depending on the type of coupling, it can be used with different types of motors such as servo motors, stepper motors, general motors, and encoders. In terms of system characteristics, data settings such as zero backlash, high torque, high rigidity, shock absorption, insulation, high precision, and high speed of the coupling also need to be differentiated.
2. Determine the motor torque (determine the rated torque of the coupling)
1) Servo motor selection
Rated torque × working condition factor × reduction ratio
2) Stepper motor selection
Holding torque×operating factor×reduction ratio
3) General motor selection
(9500×Rated torque÷Rated speed)×Working factor
After calculating the transmission torque T of the motor, it is necessary to determine the correction coefficient K in combination with the specific working condition coefficient table.
3. Determine the size of the space
This step mainly selects a coupling with a suitable length L and outer diameter D according to the space of the installation position of the coupling.
4. Whether to add keyway
5. Use environment
There are some special requirements for the selection of couplings in different use environments and application fields. For example, couplings should consider the oxidation resistance and corrosion resistance of raw materials in special environments such as salt spray and humidity; when used in the lithium battery industry, copper, nickel, and zinc must be banned.
6. Coupling fixing method
1) Screw fixed type
The screw-fixed fixing method is the most common and low-cost connection method of the coupling, but because the front end of the screw is in direct contact with the shaft, it may cause damage to the shaft or be difficult to disassemble, so care must be taken when using this fixing method.
2) Screw clamping type
Use the force of tightening the countersunk head bolts to shrink the slit and hold the shaft tightly. The installation and removal process of this installation method is very simple and will not cause damage to the shaft.
3) Keyway type
The keyway type fixing method is the same as the screw fixing type, which is one of the most traditional fixing methods. It is suitable for transmission scenarios with higher torque. In order to prevent axial movement, it is usually used together with bolt direct fixing type and clamping type.
4) Expansion sleeve type
This kind of fixing method utilizes the connection method of the magnification effect of the tapered side and the hypotenuse side, which can realize a stable and reliable connection. It is suitable for high-torque transmission scenarios, and is most suitable for the spindle of machine tools.
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