Heavy duty torsion springs operate by resisting angular displacement. When a force is applied to the ends (legs) of the spring, it...
Wire formed springs, also known as wire forms or wire bent parts, refer to metal elastic components that are bent into specific complex shapes using metal wire (typically round wire, but also flat wire or other profiles) and equipment like CNC wire bending machines. They go beyond the simple push, pull, and torsion functions of traditional coil springs. Through precise shape design, they integrate the functions of springs, clips, links, brackets, and more into a single part, representing an innovative solution for achieving complex mechanical functions.
Core Concept:
The core lies in "forming". They are not standard items but are highly customized based on the specific spatial and functional requirements of a product, designed to solve particular mechanical problems.
Key Features:
Functional Integration: A single part can simultaneously achieve multiple functions such as providing spring force, positioning, clamping, transmission, and connection, simplifying product structure and reducing part count.
Excellent Space Adaptability: Can be designed into almost any 2D or 3D shape, making perfect use of irregular and limited space within equipment.
High Cost-Effectiveness: Although custom molds and designs are required, integrating the functions of multiple parts into one significantly reduces assembly and material costs.
Material Diversity: Various materials can be selected as needed, such as carbon steel, stainless steel, music wire, copper alloys, etc.
Common Applications:
Wire forms are found almost everywhere, especially in fields requiring sophisticated design:
Automotive Industry: Seat adjustment mechanisms, seatbelt tongue plates, wire harness clips, accelerator pedal return mechanisms.
Household Appliances: Washing machine door locks, coffee machine levers, printer paper tray mechanisms, hinges, and return mechanisms for appliance doors.
Medical Devices: Grasping components for laparoscopic instruments, transmission parts in insulin pumps, clips for monitoring equipment.
Consumer Electronics: SIM card trays in phones, torque components within laptop screen hinges, battery contacts in wearable devices.
General Industry: Trigger mechanisms for safety guards, linkages in agricultural machinery, etc.
| Project | Size | Custom made |
| Material | Spring steel (SWC), piano wire (SWP), stainless steel (SUS), mild steel, phosphor bronze, 60Si2Mn, 55CrSi, T9A, A3, titanium alloy, nickel-plated wire, galvanized wire, tinned wire, enameled wire | |
| Surface treatment | Galvanizing, nickel plating, anodizing, black oxidation, electrophoresis, power coating, gold plating, silver plating, tin plating, paint, Chorme, phosphate, Dacromet, oiling, copper plating, sandblasting, passivation, polishing, etc. | |
| Package | PE bags, cartons, pallets, customized according to customer needs | |
| Application | Automotive hardware accessories, electrical equipment, electronic products, medical equipment, fitness equipment parts, industrial equipment, mechanical parts, office equipment, children's toys, etc. | |
| Experience | Heli Spring has 31 years of experience in spring and stamping manufacturing | |
| Project | Size | Custom made |
| Material | Spring steel (SWC), piano wire (SWP), stainless steel (SUS), mild steel, phosphor bronze, 60Si2Mn, 55CrSi, T9A, A3, titanium alloy, nickel-plated wire, galvanized wire, tinned wire, enameled wire | |
| Surface treatment | Galvanizing, nickel plating, anodizing, black oxidation, electrophoresis, power coating, gold plating, silver plating, tin plating, paint, Chorme, phosphate, Dacromet, oiling, copper plating, sandblasting, passivation, polishing, etc. | |
| Package | PE bags, cartons, pallets, customized according to customer needs | |
| Application | Automotive hardware accessories, electrical equipment, electronic products, medical equipment, fitness equipment parts, industrial equipment, mechanical parts, office equipment, children's toys, etc. | |
| Experience | Heli Spring has 31 years of experience in spring and stamping manufacturing | |
| Project | Size | Custom made |
| Material | Spring steel (SWC), piano wire (SWP), stainless steel (SUS), mild steel, phosphor bronze, 60Si2Mn, 55CrSi, T9A, A3, titanium alloy, nickel-plated wire, galvanized wire, tinned wire, enameled wire | |
| Surface treatment | Galvanizing, nickel plating, anodizing, black oxidation, electrophoresis, power coating, gold plating, silver plating, tin plating, paint, Chorme, phosphate, Dacromet, oiling, copper plating, sandblasting, passivation, polishing, etc. | |
| Package | PE bags, cartons, pallets, customized according to customer needs | |
| Application | Automotive hardware accessories, electrical equipment, electronic products, medical equipment, fitness equipment parts, industrial equipment, mechanical parts, office equipment, children's toys, etc. | |
| Experience | Heli Spring has 31 years of experience in spring and stamping manufacturing | |
| Project | Size | Custom made |
| Material | Spring steel (SWC), piano wire (SWP), stainless steel (SUS), mild steel, phosphor bronze, 60Si2Mn, 55CrSi, T9A, A3, titanium alloy, nickel-plated wire, galvanized wire, tinned wire, enameled wire | |
| Surface treatment | Galvanizing, nickel plating, anodizing, black oxidation, electrophoresis, power coating, gold plating, silver plating, tin plating, paint, Chorme, phosphate, Dacromet, oiling, copper plating, sandblasting, passivation, polishing, etc. | |
| Package | PE bags, cartons, pallets, customized according to customer needs | |
| Application | Automotive hardware accessories, electrical equipment, electronic products, medical equipment, fitness equipment parts, industrial equipment, mechanical parts, office equipment, children's toys, etc. | |
| Experience | Heli Spring has 31 years of experience in spring and stamping manufacturing | |
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Wire formed springs are springs made by bending or coiling wire into specific shapes to meet the mechanical requirements of a system. They can be produced in various configurations, such as compression, tension, torsion, or flat springs.
Wire formed springs are commonly made from high-carbon steel, stainless steel, alloy steel, or music wire. Material selection depends on factors like strength, corrosion resistance, and fatigue resistance.
Wire formed springs are used in a wide range of industries, including automotive, aerospace, electronics, medical devices, and industrial equipment. They are typically chosen based on their mechanical properties, such as load-bearing capacity and flexibility.
The manufacturing process involves several stages, including wire selection, forming, heat treatment, and finishing. Springs can be created using CNC machines or through manual methods depending on the complexity of the design.
Yes, wire formed springs can be designed to meet specific requirements. Customization includes adjusting parameters such as wire diameter, shape, size, and material to fit particular applications.
Wire formed springs are typically custom-made with complex shapes and designs, while traditional springs may follow more standardized designs.
The tolerance levels that can be achieved with custom and industrial wire form springs depend on several factors, including the manufacturing process, material used, and the precision required for the application. Achieving high precision is critical in industries like aerospace and medical devices, where even minor variations can affect performance.
Customization & Design
These springs can be designed to tight tolerances, sometimes as small as ±0.002 inches or even finer, depending on the manufacturing method. For more complex designs or highly demanding applications, the tolerances may be slightly looser, but manufacturers generally aim for the tightest possible precision.
The design process plays a role in determining achievable tolerances. The complexity of the spring shape and the requirements of the system will affect how closely the spring can be manufactured to the desired specifications. For example, a spring that needs to fit into a tight housing or exert a specific force may require more precise control over the dimensions.
Materials Used
The material used for wire forming also influences the tolerance levels that can be achieved. Stainless steel and high-carbon steel are popular choices for wire springs because they offer a balance of strength, flexibility, and formability. However, some materials are more challenging to work with and may result in slightly broader tolerances due to factors such as the material's flexibility or the difficulty of maintaining its properties during forming.
Manufacturing Process
Modern CNC machines and automated processes help achieve tight tolerances. These machines can provide highly consistent results, reducing the likelihood of errors. However, manual processes may result in a higher margin of error.
The stiffness of a wire formed spring plays a crucial role in determining its performance in a given application. Stiffness refers to the spring's resistance to deformation when a force is applied. The stiffer the spring, the more force it can resist without undergoing significant deflection.
In applications requiring high force and minimal movement, a stiffer spring is typically preferred. For example, in heavy-duty machinery, a stiffer spring will absorb shock and support mechanical components under large loads without excessive bending or stretching.
On the other hand, in applications where flexibility or a controlled response to lighter forces is necessary, a less stiff spring may be more appropriate. The stiffness is determined by the material properties of the wire, the spring’s design, and its dimensions, such as the diameter of the wire and the number of coils. Ultimately, the stiffness should be carefully considered based on the spring's specific function.
The testing and inspection process for wire formed springs ensures that the springs meet the required mechanical properties and performance standards. The process typically includes visual inspections to check for surface defects such as cracks, rust, or incorrect shapes. Dimensional checks are performed using calipers or micrometers to ensure the spring meets the specified tolerances.
In more advanced testing, the spring may undergo load testing, where force is applied to measure the spring’s deflection and confirm it operates within the required parameters. Fatigue testing can also be conducted to ensure the spring can withstand repeated cycles of use without failure. Additionally, the spring may be subjected to heat treatment or stress-relieving processes, followed by tests to assess its final mechanical properties, ensuring it performs as expected under real-world conditions.