Home > Spiral spring design
How to determine the length of a constant force spring
How to determine the length of a constant force spring
  Constant force springs are mechanical devices used in applications that typically require some kind of balance or retraction mechanism. In design and function, constant force springs differ from the more common types of coil springs. They apply a consistent linear force or torque that remains constant over a wide range of motion. When a coil spring is under force, whether it is stretched, compressed, or rotated, it produces a force proportional to its stretch. How a spring responds when a force is applied or released is called spring deflection. Years of experience tell us what happens when a spring is released from its temporary state. We know that the spring will return to its original position, but it will be proportional to the force exerted on it before releasing. A spring has a restoring force that allows the elastic material to return to its original state - the equilibrium position after the applied force is removed. Stretching, squeezing or twisting, what...
Physical principle behind constant force spring
Physical principle behind constant force spring
When you walk into your office building on your way to work every day, or into your local bank, or any commercial facility, you may open a heavy glass door. When you cross the threshold, the door closes behind you, and you don't think about it. However, the heavy glass door was probably closed by a constant force spring. Constant force springs are widely used in daily applications. From door closers to rope and hose retractors, to sports equipment, toys, motors, etc., constant force springs exert force at an amazing high frequency and consistency. Let's take a closer look at the basic physics behind the constant force spring. In the 17th century, the British physicist Robert Hooke proposed a formula for force and elasticity, which is now called Hooke's law. Hooke's law states that the force (f) required to stretch or compress a spring for a distance (x) varies linearly in proportion to that distance. The formula is f=kx, where k is a...
The customized production process of spring cannot be carried out at will
The customized production process of spring cannot be carried out at will
As we all know, although the spring is only a small elastic accessory, it plays an important role in life, and the quality of the spring has a great impact. Most springs are customized products, so the process of customized production cannot be careless. When purchasing a spring, customers usually need to design the data of the product first, and communicate with the engineer to draw the drawing, so as to communicate with the spring manufacturer more clearly. Drawing the spring drawing is an important step before purchasing the spring accessories, and it is also an important step of customizing the spring engineering. The detail of the drawing directly affects the quality and effect of the spring products. Secondly, customers should carefully screen suppliers. If spring products are used, then spring manufacturers need to carefully screen and select suppliers that are suitable for you through comparison. There are many spring manufacturers on the Internet. It is more important to choose manufacturers with...
Constant Force Springs
Constant Force Springs
The extension type of Constant Force Spring represents the most basic, yet most versatile, type of constant force spring. It is a pre-stressed flat strip of spring material which is formed into virtually constant radius coils around itself or on a drum. When the strip is extended (deflected) the inherent stress resists the loading force, the same as a common extension spring, but at a nearly constant (zero) rate. A constant torque is obtained when the outer end of the spring is attached to another spool and caused to wind in either the reverse or same direction as it is originally wound. The full rated load of the spring is reached after being deflected to a length equal to 1.25 times its diameter. Thereafter, it maintains a relatively constant force regardless of extension length. The load is basically determined by the thickness and width of the material and the diameter of the coil. Qianye Spring  offers a stock of constant force springs in a variety of...
Traditional power springs and preloaded springs
Traditional power springs and preloaded springs
   Traditional power springs and preloaded power springs are fabricated from spring steel bars to provide torque. Spring steel is a low alloy, medium carbon steel or high carbon steel with a very high yield strength. Objects made of spring steel can return to their original shape despite significant bending or twisting. Power springs use flat (unstressed) steel windings, while pre-stressed power springs use pre-stressed steel to produce a larger range of usable torque than conventional power springs.        During the manufacturing process, the spring is wound into the retaining ring or the customer's housing (the retaining ring is pictured below). When ready for final installation, carefully install the spring into its housing with the outer end attached to the outer edge and the inner end attached to the mandrel (see photo below). During operation, the housing or mandrel will be fixed while the other component is free to rotate. Depending on the requirements of your specific design,...
Application of springs in industrial doors
Application of springs in industrial doors
The constant force spring of the industrial door mainly plays a balancing role and reduces the burden on the motor. The force of the spring is equivalent to the force of the industrial door, which is the most ideal configuration state. If the spring force is too large or too small, it will affect the operation of the industrial door. In severe cases, safety accidents may occur and endanger others.        Constant force springs are often used to provide balance to products, so what is balance?        Constant force springs are most useful in applications that require consistent recoil. Ordinary springs behave according to a mathematical equation called Hooke's law. Hooke's law states that the force of a recoil spring in the direction of recoil is equal to the distance the spring is displaced from equilibrium. Simply put, we look at how far the spring is stretched - multiplied by a mathematical constant, the rate of...
Constant Torque Spring Motor
Constant Torque Spring Motor
A constant torque spring motor is a strip of prestressed spring material that forms a coil and is stored on a small storage drum. The free end is then pinned and rewound onto the larger output drum; this is the "winding" part of the constant torque spring cycle. When the output drum is released, the spring will return to the storage drum to assume its natural curvature, rotating the output drum and providing an almost constant torque.        Constant torque springs are made of type 301 high quality stainless steel and are supplied in coil form for mounting on the motor drum. Its main features are: 1. Long time deflection under almost constant torque. Positive or limited negative gradients can be achieved. 2. Minimal inter-coil friction and resulting hysteresis, which is common in power springs. 3. Rotary motion is provided directly from the output drum or linear displacement by using cables and spools.        Many applications...
Spiral spring design Product
 Optimization design service
Optimization design service
From product ideas, design to finished product manufacturing, we can assist customers in completing them, and help customers optimize their products from the professional perspective of spring use, speed up product development, and speed up time to market. From the initial stage of spring component design, production to final assembly, customers choose the advantages that Qianye can get. 1. Save product development time 2. Give you a variety of solutions, choose the desired optimization solution 3. The spring that best suits your product 4. Serve you for life and satisfy any technical support you have.
 Constant torsion spring
Constant torsion spring
Characteristic: The fixed (constant) torque spring (spring) is made of stainless steel. The external force rewinds the mainspring from its natural state to the output wheel (energy storage). When the external force is removed, the spring will return to its natural state. At the same time, a constant torque force (stored elastic force) is generated (released) on the output wheel, so it is called a constant torque generator. strip. Belongs to (a use method in constant force spring) Advantage: The advantages of fixed-torque springs compared to power (scroll) springs: 1. The torque will not change due to the increase in the number of revolutions. To 2. There is no limit to the number of available turns, and the design of multi-turn turns mostly adopts a fixed-torque spring. To 3. The number of invalid rotations is small, more energy can be stored, and the efficiency is higher. To Manufacturing range of fixed torque spring: The thickness is 0.05~0.85mm, and the width...
 Power Spring
Power Spring
Characteristic: The power spring is coiled by steel strip. A spring box is required to limit its outer diameter. The center of the spring is connected to the shaft. When an external force is applied to make the shaft and the spring rotate relative to each other, the spring will be wound on the shaft and stored Torsion, when the external force disappears, the spring generates torsion on the shaft or spring box. Advantage: Power springs are divided into natural power springs and pre-stressed power springs according to their relaxed shape. In contrast, the pre-force type power spring can store 25% to 55% more torque and provide more effective turns. Product manufacturing range: The thickness is 0.05~0.85mm, and the width is 2.0~60mm. Principle of the scene: The high-precision pen injector uses a unique power spring to provide small and highly accurate drug dosages. A fixed amount of medicine is injected into the body through the constant force of the spring...
 Variable force spring
Variable force spring
Characteristic: The appearance of variable force spring and variable torsion spring is very similar to constant force spring and constant torsion spring. Variable force springs and variable torsion springs can break through the influence of Hooke’s law on traditional springs, so that stroke and force no longer increase proportionally, but can achieve various elastic force-displacement combinations such as negative slope stepped constant force, which can be mechanically For engineering requirements, use the relationship between elastic force and displacement stroke to design various elastic curve changes in specific applications. There are a variety of different variable force springs, variable torsion spring application designs, and solutions. The manufacturing range of variable force springs and variable torsion springs: The thickness is 0.05~0.85mm, and the width is 2.0~65mm.
 Carbon brush spring
Carbon brush spring
Characteristic: 1. Due to the constant force, regardless of the length of the carbon brush and the commutator, the pressure remains the same. 2. Constant force spring reduces carbon brush loss, prolongs the life of carbon brush, and reduces current loss. To 3. Small motors can be designed to reduce the outer diameter of the motor. 4. The length of carbon brush can be increased. To 5. A larger commutator can be used. To 6. Reduce sparks and reduce electromagnetic interference. Constant force spring for single roll carbon brush 1. Carbon brush width 2. Carbon brush height: The spring width must be smaller than the carbon brush height 3. Length of abradable carbon brush: The spring stroke must be greater than the length of the abradable carbon brush 4. Contact pressure required for carbon brush and commutator: required spring force Constant force spring for double-rolled carbon brush 1. Carbon brush width 2. Carbon brush height: The spring width must be...
 Constant force spring
Constant force spring
Characteristic: Constant force (constant force) springs are rolled by stainless steel strips. The high-strength steel strips are shaped by specific production spring equipment. When the external force straightens them, the spring will naturally wind back and produce elasticity, but it reaches us The goal can return to the starting point we specified after being shifted. Advantage: The advantages of constant force spring over traditional wire spring: 1. In a very small installation space, a very high elastic output can be achieved. 2. Maintain a constant elasticity in all strokes. 3. The pre-stroke stroke is short, and only a short stroke is needed to achieve the required elasticity. 4. The original length is less than the wire spring, and the stroke is unlimited. The manufacturing range of Dingli Clockwork: The thickness is 0.05~0.85mm, and the width is 2.0~60mm. Principle of the scene: The constant force spring has the characteristic of maintaining a constant force during a long stroke, and can achieve...
Spiral spring design News
 Constant force spring is used in removing an implanted object using laser cut hypotubes
Constant force spring is used in removing an implanted object using laser cut hypotubes

Time:2022-9-14

Removal or extraction of the lead may be difficult. As mentioned above, the body's natural healing process forms scar tissue over and along the lead, and possibly at its tip, thereby encasing at least a portion of the lead and fastening it even more securely in the patient's body. In addition, the lead and/or tissue may become attached to the vasculature wall. Both results may, therefore, increase the difficulty of removing the leads from the patient's vasculature. A device for removing an implanted object from a body vessel, may comprise a sheath assembly comprising an outer sheath assembly and an inner sheath assembly, and a pin, the outer sheath assembly comprising an outer sheath and an outer band, the outer band coupled to the pin, the inner sheath assembly comprising an inner sheath and a tip, wherein the tip has a cutting surface, the inner sheath comprising a proximal end and a distal end, wherein the distal end of the inner sheath is coupled to the tip, the tip comprising a cam slot for receipt of and cooperation with the pin, and a handle assembly comprising a trigger and a barrel cam cylinder, the trigger comprising a trigger pin, the barrel cam cylinder comprising a barrel cam cylinder slot for receipt and cooperation with the trigger pin, wherein the proximal end of the inner sheath is coupled to the barrel cam cylinder such that upon the trigger pin moving proximally in a longitudinal direction, the barrel cam cylinder rotates in both a clockwise direction and a counter clockwise direction, thereby...
 Power spring in the design of the car covers
Power spring in the design of the car covers

Time:2022-9-14

Car covers are commonly used automotive protective articles, but the folding and storage of car covers is a troublesome thing. In order to solve this problem, invention lovers have done a lot of useful exploration and put forward many solutions. One kind of scheme is to use power to drive the reel to directly roll up the car cover cloth. Using the reel to directly roll up the car cover cloth can achieve the purpose of rapid retraction of the car cover, but there are the following problems in actual use: first, the winding and friction of the reel when directly rolling up the car cover cloth wear the car cover cloth greatly; second, in order to adapt to the width of the car cover cloth, the width of the car cover retracting device must be close to the width of the car cover cloth. If it is too narrow, it will increase the winding of the car cover cloth, so the shape of the car cover retracting device is larger, It reduces the convenience of use: Third, it may not be able to completely stow the hood cloth. Only one power spring is needed to solve the above series of problems. The power spring designed by Qianye precision can be applied to the car cover. The power spring retracts the car cover to realize the rapid retraction of the car cover. At the same time, it solves the problems of large wear, large device shape and high operation intensity caused by the direct retraction of the car cover cloth by the reel, as well as the problem...
 Qianye constant force spring helps fight the "epidemic" on the experimental platform
Qianye constant force spring helps fight the "epidemic" on the experimental platform

Time:2022-9-13

Rapidly improving the ability of nucleic acid detection is the key to winning the war of epidemic prevention and control. Since the outbreak of the current round of the epidemic in Shenzhen, Shenzhen's "Huo-yan" laboratory has been on standby, quickly assembled anti-epidemic forces to fight the "epidemic", and started the anti-epidemic defense battle at home! On January 15, Shenzhen satellite TV and Shenzhen news network visited BGI Genomics Shenzhen Huo-Yan laboratory. Just like its name "Huo-yan", Huo-yan Laboratory uses the " piercing eye" of the Chinese plan to make the new crown virus "nowhere to hide". "Huo-yan" is divided into reagent preparation cabin, code scanning sampling cabin, nucleic acid extraction cabin, and nucleic acid amplification cabin.Among them, the sampling cabin and extraction cabin are equipped with BGI's self-developed fully automated cup separation system, which can process 192 samples every 40 minutes, and a high-throughput automated nucleic acid extractor, which can process up to 10,000 samples per day. The "Huo-yan" laboratory has a detection capacity of 60,000 daily throughput, and 10 mixed 1 can detect up to 600,000 copies per day. BGI's "Huo-yan" laboratory has realized the automation and intelligence of the nucleic acid detection platform. Domestic technology has greatly improved the detection efficiency and greatly reduced the risk of infection by laboratory personnel.BGI's new crown testing products have covered more than 180 countries and regions, and BGI Genomics had built more than 90 Huo-Yan Laboratories in 30 countries and regions worldwide. The lifting system spring in the BGI nucleic acid testing equipment is to replace the original foreign spring with the spring...
 How to solve the problem of fan lifting function by dint spring
How to solve the problem of fan lifting function by dint spring

Time:2022-9-13

We all know that gravity of the earth's center will drop rapidly to the bottom point when the object has no support, and it will be heavy when it rises. Similarly, when the fan moves up and down, it will also be affected by gravity. Therefore, we all hope that the fan will be more light when it is lifted and lowered; it can be easily moved up and down by hand to locate at will, and the fan will be more arbitrary when using it. Therefore, to achieve the purpose of light and arbitrary positioning, we must solve the problem of gravity There are several main points for the fan to rise and fall: 1. Life problems: Each kind of hair will have a certain life cycle. If you choose the general materials and immature production technology, the life of the products will be greatly reduced. The same with the elastic problem of hairpin, they are all related to materials and processing technology. In the process of using the fixed force, there will be problems of too short life,. 2. Elasticity: In the limited space, under the same size conditions, in order to make the hair to meet the strength requirements, we must strengthen it from two aspects to better play the effect. (1) Reasonable use of materials: In the process of production and design, we need to use the corresponding materials for processing and production according to the design of the spring. (2) Processing technology There are different processes for the same surface size of the fixed force...
 [Qianye precision]Benefits of choosing custom springs
[Qianye precision]Benefits of choosing custom springs

Time:2022-9-14

  Purchasing special components for equipment is always an obstacle for engineers designing new products. Many industries, from automotive and aerospace to medical and construction, need to customize springs for special applications. Spare springs are ideal for short turnaround times, but they are not suitable for your equipment specification. To this end, custom springs may be an important solution for industrial engineers. Learn more about some of the benefits associated with custom springs.     1、Design expertise    Using stock springs may mean that you must meet the approximate values you need. However, custom springs can be made to match the specifications required by your equipment. Custom spring manufacturing brings extensive knowledge of different types of springs to your project, including how to manufacture components to meet product requirements or specifications. When you work with spring manufacturers with design engineering expertise, your company can also reduce other costs.     2、 Flexibility   Custom spring manufacturing reduces turnaround time associated with orders and revisions. Maintain stricter control over the supply chain. If the components you ordered need to be adjusted, you can make these adjustments more directly. This gives you more flexibility to experiment with designs and adjust to product recalls or industry changes.     3、 Reduce production costs    Manufacturing partners with their own internal tool capabilities are usually able to complete large custom orders. This is due not only to their professional manufacturing technology, but also to the reduced costs associated with transporting and handling parts. You can also avoid indirect costs of labor, manufacturing equipment and raw...
 Application of power spring in automatic shoelace system
Application of power spring in automatic shoelace system

Time:2022-9-14

Once upon a time, did you have a dream that one day you could not tie your shoes by yourself? A kind of shoes with automatic shoelace has been realized now! The biggest highlight of automatic shoes is that users do not need to bend down to tie shoes. Through the built-in sensor in the shoes, it can even automatically adjust the tightness according to the movement in real time. The automatic shoelace system adopts a power spring shoelace engine. The power spring shoelace engine 400 can include a housing 405 (including a base 406 and a cover 408), a motor 410, a shaft 415, a spring mandrel 420, a power spring 430, a clutch 435, a lever 440, a coupling (spool mandrel) 445, a coupling bearing 450, a spool 460, a driven gear 465, a drive gear 470, a spring mandrel bearing 475, and a driven gear bearing 480.   The power spring lacing engine can be driven by a motor to rotate the power spring to store energy in the power spring. During a shoelace event, the power spring can selectively and controllably release the stored energy to the coupling to rotate the spool, and between shoelace events, the power spring can rotate to store energy. The power spring system can use a small number of small parts to provide a compact, quiet and cost-effective shoelace engine. The power spring is divided into natural power spring and pre force power spring according to its relaxed shape. In contrast, pre tensioned power springs can store 25% to 55% more torque and provide more effective turns.   The power spring can be assembled into the customer's housing for immediate assembly,...
 Power spring used in automobile safety belt
Power spring used in automobile safety belt

Time:2022-9-14

Safety belt is equal to life belt. Everyone should see the painful accidents caused by not wearing safety belt. I believe everyone is familiar with the car safety belt. It is a safety device to avoid rushing out of the car during collision and causing death and injury. Automobile safety belt is recognized as the cheapest and most effective safety device, and it is also a necessary safety configuration. In a typical safety belt system, the safety belt is connected with a retractor. The core component of the retractor is the reel, which is connected with one end of the safety belt. Inside the retractor, with the help of the action of the power spring, the webbing can expand and contract freely with the movement of the user's body without loosening the webbing. In case of emergency braking, collision or sharp change of vehicle driving state, the sensitive element in the retractor will lock the reel to fix the webbing at a certain position and bear the load imposed on the webbing by the user's body. The power spring is made of rolled steel strip. A spring box is required to limit its outer diameter in use. The center of the spring is connected with the shaft. When an external force is applied to make the shaft rotate relative to the spring, the spring will roll on the shaft center and store torque. When the external force disappears, the spring will produce torque on the shaft or spring box. Qianye has made technical product updates for power springs. First of all, our company...
 Nine factors that should be paid attention to in spring production
Nine factors that should be paid attention to in spring production

Time:2022-9-14

A spring is a mechanical part that works with elasticity. Generally made of spring steel. It is used to control the movement, buffering or vibration, energy storage, force measurement, etc. of mechanical parts, and is widely used in machines and instruments. (1) Elastic limit - the elastic limit is related to the tensile strength. Selecting a material with a high elastic limit is usually equivalent to selecting a material with a high tensile strength. (2) Spring coefficient - the stress applied to the spring material to produce a unit strain is called the elastic coefficient value, which mainly depends on its chemical composition.    (3) Fatigue strength - fatigue strength must be considered for springs subjected to dynamic loads.   There is a certain relationship between fatigue strength and tensile strength of materials. (4) Hardenability - in order to improve the quenching effect, the material is required to have good hardenability, and at least 50% of the central block iron structure shall be quenched. (5) Shape and size - the mechanical properties of the spring material change with the size. The manufacturing size of the spring material is allowed to have tolerances. Therefore, the material must be selected according to the accuracy of the spring load characteristics.(6) Heat resistance - some springs are used at certain high temperatures. Generally, the mechanical properties of spring materials decrease with the increase of temperature, and the spring performance decreases after a certain temperature.   (7) Corrosion resistance - when the spring is used in a corrosive environment, the corrosion resistance of the material mainly depends on its chemical composition.    There are many corrosion factors, so we...