Flexible flex Fluid Chain Jaw flange Gear Rigid Spacer PIN HRC MH NM universal Fenaflex Oldham spline clamp tyre grid hydraulic servo motor shaft Coupling
The function of Shaft coupling:
1. Shafts for connecting separately manufactured units such as motors and generators.
2. If any axis is misaligned.
3. Provides mechanical flexibility.
4. Absorb the transmission of impact load.
5. Prevent overload
We can provide the following couplings.
|Rigid coupling||Flange coupling||Oldham coupling|
|Sleeve or muff coupling||Gear coupling||Bellow coupling|
|Split muff coupling||Flexible coupling||Fluid coupling|
|Clamp or split-muff or compression coupling||Universal coupling||Variable speed coupling|
|Bushed pin-type coupling||Diaphragm coupling||Constant speed coupling|
We are an industrial company specializing in the production of couplings. It has 3 branches: steel casting, forging, and heat treatment. Main products: cross shaft universal coupling, drum gear coupling, non-metallic elastic element coupling, rigid coupling, etc.
The company mainly produces the industry standard JB3241-91 swap JB5513-91 swc. JB3242-93 swz series universal coupling with spider type. It can also design and produce various non-standard universal couplings, other couplings, and mechanical products for users according to special requirements. Currently, the products are mainly sold to major steel companies at home and abroad, the metallurgical steel rolling industry, and leading engine manufacturers, with an annual production capacity of more than 7000 sets.
The company’s quality policy is “quality for survival, variety for development.” In August 2000, the national quality system certification authority audited that its quality assurance system met the requirements of GB/T19002-1994 IDT ISO9002:1994 and obtained the quality system certification certificate with the registration number 0900B5711. It is the first enterprise in the coupling production industry in HangZhou City that passed the ISO9002 quality and constitution certification.
The company pursues the business purpose of “reliable quality, the supremacy of reputation, commitment to business and customer satisfaction” and welcomes customers at home and abroad to choose our products.
At the same time, the company has established long-term cooperative relations with many enterprises and warmly welcomes friends from all walks of life to visit, investigate and negotiate business!
How to use the coupling safely
The coupling is an intermediate connecting part of each motion mechanism, which directly impacts the regular operation of each motion mechanism. Therefore, attention must be paid to:
1. The coupling is not allowed to have more than the specified axis deflection and radial displacement so as not to affect its transmission performance.
2. The bolts of the LINS coupling shall not be loose or damaged.
3. Gear coupling and cross slide coupling shall be lubricated regularly, and lubricating grease shall be added every 2-3 months to avoid severe wear of gear teeth and serious consequences.
4. The tooth width contact length of gear coupling shall not be less than 70%; Its axial displacement shall not be more significant than 5mm
5. The coupling is not allowed to have cracks. If there are cracks, it needs to be replaced (they can be knocked with a small hammer and judged according to the sound).
6. The keys of LINS coupling shall be closely matched and shall not be loosened.
7. The tooth thickness of the gear coupling is worn. When the lifting mechanism exceeds 15% of the original tooth thickness, the operating mechanism exceeds 25%, and the broken tooth is also scrapped.
8. If the elastic ring of the pin coupling and the sealing ring of the gear coupling is damaged or aged, they should be replaced in time.
Packaging & Shipping
Comparison between Couplings with High Torsional Stiffness and Low Torsional Stiffness
Couplings used in motion control systems can vary significantly in their torsional stiffness, which is a crucial characteristic that affects their performance and behavior. Let’s explore the differences between couplings with high torsional stiffness and low torsional stiffness:
- Torsional Stiffness:
Torsional stiffness refers to the resistance of a coupling to rotational deflection or twisting under the influence of a torque. Couplings with high torsional stiffness offer greater resistance to twisting, while those with low torsional stiffness are more flexible and can accommodate more significant torsional deflections.
- Response to Torque:
Couplings with high torsional stiffness transmit torque more efficiently from one shaft to another, as they minimize torsional deflection. This characteristic is advantageous in applications where precise torque transmission and minimal power loss are essential. On the other hand, couplings with low torsional stiffness are better at absorbing shocks and torsional vibrations, making them suitable for applications where dampening is required.
- Misalignment Compensation:
Couplings with high torsional stiffness are less forgiving when it comes to misalignment between shafts. They require more accurate alignment to prevent excessive stress on the coupling and connected components. In contrast, couplings with low torsional stiffness can accommodate some degree of misalignment, reducing the need for precise alignment during installation.
- Resonance and Natural Frequency:
Couplings with high torsional stiffness have higher natural frequencies and are less prone to resonance. This characteristic is beneficial in high-speed applications where avoiding resonance is critical to prevent damaging vibrations. Couplings with low torsional stiffness, on the other hand, may have lower natural frequencies and need careful consideration to avoid resonance-related issues.
- Stress on Connected Equipment:
High torsional stiffness couplings can transfer torsional loads more directly to connected equipment, which may increase the stress on other system components. Low torsional stiffness couplings can act as vibration isolators, reducing the impact of torsional loads on connected equipment.
- Application Suitability:
The choice between high and low torsional stiffness couplings depends on the specific requirements of the application. High torsional stiffness couplings are suitable for applications where precise torque transmission and accuracy are crucial, such as CNC machines and robotics. Low torsional stiffness couplings are ideal for applications involving misalignment, shock absorption, and vibration dampening, such as printing machinery and conveyor systems.
Ultimately, the selection of a coupling with high or low torsional stiffness depends on the specific needs and performance requirements of the motion control system, ensuring optimal functionality and efficiency in the application.
Considerations for Selecting Servo Couplings in High-Speed Applications
High-speed applications present unique challenges that require careful consideration when selecting servo couplings. Here are specific factors to keep in mind:
- Torsional Stiffness: In high-speed applications, torsional stiffness is crucial to ensure rapid response and accuracy. A coupling with sufficient torsional stiffness reduces torsional deflection and maintains precise motion control even at high speeds.
- Dynamic Balance: High-speed operation can magnify any imbalances in the servo system. Choosing a servo coupling with dynamic balance helps minimize vibration and prevents excessive wear on the motor and bearings.
- Material Selection: The material of the servo coupling should be carefully chosen to withstand the high rotational speeds and avoid resonance issues. Consider materials with high strength, low inertia, and excellent fatigue resistance to ensure reliability in high-speed applications.
- Backlash: High-speed systems require quick changes in motion direction. Selecting a zero-backlash coupling reduces the chances of sudden impacts and vibrations due to backlash, ensuring smooth and accurate motion.
- Inertia: The inertia of the servo coupling should be minimized to reduce the system’s overall inertia and allow for rapid acceleration and deceleration without sacrificing performance.
- Temperature Resistance: High-speed operation can generate heat, so the chosen coupling should have good temperature resistance to prevent premature failure or deformation.
- Bearing Loads: Consider the loads exerted on the motor and driven load bearings at high speeds. The coupling should be capable of handling these loads without causing excessive wear on the bearings.
- Installation and Alignment: Proper installation and alignment of the servo coupling are critical in high-speed applications. Ensure precise alignment to avoid introducing additional stresses and misalignments that can compromise system performance.
- Service Life and Maintenance: Evaluate the expected service life of the servo coupling under high-speed conditions and consider the maintenance requirements to ensure long-term reliability.
By considering these specific factors, engineers can select the most suitable servo coupling for high-speed applications, optimizing performance, accuracy, and efficiency while minimizing wear and vibration issues.
Advantages of Using Zero-Backlash Servo Couplings in Precision Systems
Zero-backlash servo couplings offer significant benefits in precision motion control systems where accuracy, repeatability, and reliability are essential. Here are the advantages of using zero-backlash servo couplings:
- Precise Motion Control: Zero-backlash couplings have no play or clearance between the coupling components. This lack of backlash ensures that motion is accurately transmitted from the servo motor to the driven load without any lost motion. As a result, precision systems can achieve precise positioning and smooth motion profiles.
- Elimination of Positioning Errors: Backlash in couplings can lead to positioning errors, especially in applications where motion direction changes frequently. Zero-backlash couplings prevent any shift or lag in motion, resulting in accurate and repeatable positioning of the driven load.
- High Repeatability: With zero-backlash, the coupling maintains consistent positioning during bidirectional movements. This feature enhances repeatability, which is crucial in tasks that require the system to follow the same path repeatedly with minimal deviation.
- Improved System Stability: Backlash in couplings can cause vibration and instability in precision systems. Zero-backlash couplings dampen vibrations and ensure a more stable motion, which is particularly valuable in high-speed and high-precision applications.
- Long-Term Reliability: Zero-backlash couplings reduce wear and stress on the servo motor and driven load’s bearings and components. This reduction in wear increases the lifespan of the entire system and reduces the need for frequent maintenance and replacement.
- Responsive Dynamic Performance: Zero-backlash couplings provide instantaneous response to changes in motion direction and speed. This responsiveness is critical in applications that require rapid acceleration and deceleration, enabling the system to handle dynamic loads with precision and efficiency.
- Higher Torque Transmission: Zero-backlash couplings can handle higher torque loads compared to some flexible couplings with backlash. This capability allows the system to transmit greater forces without compromising motion accuracy.
- Enhanced Efficiency: By minimizing lost motion and ensuring precise power transmission, zero-backlash couplings contribute to overall system efficiency. They reduce energy losses and optimize the utilization of the servo motor’s output power.
- Compatibility with High-Precision Components: In precision systems that incorporate high-precision components like encoders and linear scales, zero-backlash couplings are essential to maintain the accuracy of these components’ measurements and feedback.
In summary, zero-backlash servo couplings play a critical role in precision motion control systems by providing accurate, repeatable, and stable motion. Their ability to eliminate backlash and minimize positioning errors enhances overall system performance, efficiency, and reliability, making them an ideal choice for demanding applications that require the utmost precision.
editor by CX 2023-08-07