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Design and Application of Constant Pressure Springs

източник:Qianye Precision време:2023-5-30

Constant pressure springs are a type of mechanical spring that exert a nearly constant force over a range of motion. They are widely used in various industries such as automotive, aerospace, medical, and energy. In this article, we will discuss the design and application of constant pressure springs.

Design

The design of constant pressure springs involves three main factors: the material selection, the geometric shape, and the fabrication process.

Material selection is crucial because the spring must exhibit consistent mechanical properties over a wide range of temperatures, loads, and frequencies. Common materials used for constant pressure springs include stainless steel, phosphor bronze, and beryllium copper. The material selection also affects the cost and durability of the spring.

The geometric shape determines the spring\’s load-deflection characteristics and its ability to withstand stress and fatigue. The most common shapes for constant pressure springs are the helical coil, the wave spring, and the Belleville washer. The helical coil is the most versatile and can be designed in various sizes and shapes. The wave spring has a flat profile and is suitable for limited space applications. The Belleville washer has a conical shape and provides a high load capacity in a small package.

The fabrication process affects the precision and consistency of the spring\’s properties. The most common methods include cold forming, hot forming, and CNC machining. Cold forming involves shaping the material at room temperature, while hot forming involves heating the material to a specific temperature before shaping. CNC machining involves cutting the material to the desired shape using computer-controlled machines.

 

 

 

 

Приложение

Constant pressure springs are used in many applications where a consistent force is required over a range of motion. Some common applications include:

1. Automotive suspension systems: Constant pressure springs are used to support the weight of the vehicle and provide a smooth ride.

2. Aerospace: Constant pressure springs are used in landing gear, control surfaces, and engine valves.

3. Medical devices: Constant pressure springs are used in catheters, insulin pens, and surgical instruments.

4. Energy: Constant pressure springs are used in wind turbines, solar panels, and hydroelectric dams.

5. Consumer products: Constant pressure springs are used in toys, cameras, and appliances.

Conclusion

Constant pressure springs are a versatile and reliable type of mechanical spring that finds applications in various industries. Their design involves material selection, geometric shape, and fabrication process, which affect their performance and cost. The most common shapes for constant pressure springs are the helical coil, the wave spring, and the Belleville washer. Their applications include automotive, aerospace, medical, energy, and consumer products. Understanding the design and application of constant pressure springs is crucial for selecting the right spring for a specific application and ensuring its optimal performance.

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