У дома > Блог > Често срещан проблем > Проектиране на пружини с постоянна сила

Проектиране на пружини с постоянна сила

източник:Qianye Precision време:2022-9-14
 A constant force spring is a spring that exerts a constant force over its range of motion. That is, it does not obey Hooke’s law. Typically, a constant force spring is constructed as a coiled band of spring steel so that the spring relaxes when fully coiled. When it is unrolled, the restoring force comes mainly from the portion of the belt that is close to the roll. Since the geometry of this region remains nearly constant as the spring unfolds, the resultant force is nearly constant.
      By creating a spring with a variable pitch, you can make a push-shape spring with a constant velocity. Placing a larger pitch in a larger outer diameter coil and a smaller pitch in a smaller outer diameter coil will force the single spring to fold all coils at the same rate when compressed.
      Design of Constant Force Springs: A constant force spring is a coil of prestressed tape that exerts a nearly constant restraining force against unwinding (Figures 1 and 2). The force is constant because the change in the radius of curvature is constant. This is the case if the change in coil diameter due to buildup is not taken into account. Long reach, constant torque and virtually no friction have led many designers to specify constant force springs in applications such as sliding doors and windows and height adjustment of computer monitors and fans, store display shelves or motor carbon brush motors . Constant force motor springs are also used to drive mechanisms for timers, movie cameras and cable retractors.

      Tension type constant force tension springs are supplied in coils with a natural radius of curvature R (Fig. 3). If such a spring is installed on the drum, the drum diameter should be 10% to 20% larger than its natural diameter. There should be one and a half turns on the reel. The active portion of the material is approximately equal to 1.25 times the diameter D. Therefore, the spring will not reach its rated load until the elongation is greater than 1.25D (Figure 1). The radius of curvature of the active part goes from R to infinity and a clearance is required. The recommended distance from the center of the drum to the straight section is 0.8 times the diameter D (Figure 3). Strips can become unstable when stretched for extended periods of time and should be guided to prevent twisting or kinking during recoil. The diameter of the idler must be larger than the natural diameter and must not be used to reverse the natural radius of curvature (Figure 4).

Depending on your application, a constant force spring may be ideal. Consultation with the spring manufacturer for constant force springs is recommended at the design stage. Qianye Precision specializes in the production and manufacture of high-precision clockwork springs, which are widely used in various electronic devices, household appliances, small toys, office supplies, communication equipment, medical machinery, electronic computers, windows, doors, vehicles, etc. The imported raw materials and domestic raw materials will continue to meet your requirements. The company has more than 20 years of experience in product development, production and manufacturing, and has become a well-known brand distributor in China.

Последни новини

 Design and Application of a Constant Pressure Spring
Design and Application of a Constant Pressure Spring

Time:2023-6-8

Springs are an essential component of many mechanical devices, and their functionality can be greatly improved by incorporating a constant pressure spring. A constant pressure spring is a type of compression spring that is designed to exert a consistent force over a specified range of compression. This article will discuss the design and application of constant pressure springs, including their...

 Design and Function of a Constant Pressure Spring
Design and Function of a Constant Pressure Spring

Time:2023-6-6

Constant pressure springs are a type of mechanical springs that are designed to maintain a consistent level of pressure over a long period of time. These springs are commonly used in a wide range of applications, from automotive and aerospace industries to medical devices and household appliances. In this article, we will take a closer look at the design and...

 Enhancing Quality through Forced Solutions
Enhancing Quality through Forced Solutions

Time:2023-8-26

Introduction: Organizations continuously strive to improve their performance and deliver high-quality products or services. To achieve this, they often resort to implementing forced solutions, which refer to the utilization of strict measures or policies to enhance quality. While forced solutions may have negative connotations, they can be effective in driving improvement and ensuring consistency. This article aims to explore various...

 Maximizing Results: Our Expert Optimization Design Services
Maximizing Results: Our Expert Optimization Design Services

Time:2023-4-19

At our company, we understand that having a website is not enough. A website needs to be optimized for maximum results. That’s why we offer expert optimization design services that can help you get the most out of your website. Our optimization design services focus on three main areas: search engine optimization (SEO), user experience (UX) design, and conversion rate...

 High quality Window Constant Force Spring: The Ultimate Solution for Smooth and Effortless Operation
High quality Window Constant Force Spring: The Ultimate Solution for Smooth and Effortless Operation

Time:2023-7-31

Introduction: In today's modern world, windows play a crucial role in our everyday lives. They allow natural light to enter our living spaces, provide ventilation, and offer stunning views of the outside world. However, operating windows can sometimes be a hassle, especially when they become stiff or require a significant amount of effort to open and close. This is where...

 Enhance Your Car’s Performance with High-Quality Coil Springs
Enhance Your Car’s Performance with High-Quality Coil Springs

Time:2023-6-21

Coil springs are an integral component of a car's suspension system. They help to absorb shocks and bumps on the road, while also providing stability and control. Coil springs come in a variety of shapes and sizes, and there are many different types of materials that can be used to make them. Choosing the right coil springs for your car...

Product
 Услуги по сглобяване и монтаж
Услуги по сглобяване и монтаж
Компанията Qianye не само осигурява производството на прецизни пружини, но също така се фокусира върху структурния дизайн и функционалните решения на цялата пружинна система и може да осигури цялостна...
 Услуга за оптимизиране на дизайна
Услуга за оптимизиране на дизайна
От идеи за продукти, дизайн до производство на завършен продукт, ние можем да помогнем на клиентите да ги завършат и да помогнем на клиентите да оптимизират своите продукти от професионална гледна точка на използване на пружини, ускоряване...
 Постоянна торсионна пружина
Постоянна торсионна пружина
Характеристика: Фиксираната (постоянна) въртяща пружина (пружина) е изработена от неръждаема стомана. Външната сила връща главната пружина от нейното естествено състояние към изходното колело (съхранение на енергия). Когато...
 Пружина за карбонова четка
Пружина за карбонова четка
Характеристика: 1. Поради постоянната сила, независимо от дължината на въглеродната четка и комутатора, налягането остава същото. 2. Пружината с постоянна сила намалява въглеродната четка...
 Пружина с променлива сила
Пружина с променлива сила
Характеристика: Външният вид на пружината с променлива сила и пружината с променлива усукване е много подобен на пружината с постоянна сила и пружината с постоянно усукване. Пружините с променлива сила и пружините с променлива усукване могат...
 Силова пружина
Силова пружина
Характеристика: Силовата пружина е навита от стоманена лента. За ограничаване на външния му диаметър е необходима пружинна кутия. Центърът на пружината е свързан с вала. Кога...