variable compression spring

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Kathysia industrial Co., Ltd was reorganized from Zhengzhou spring factory, which founded in 1957, having more than 60 years of professional experience in this field. Kathysia is a designated spring products supplier by the Chinese ministry of machinery industry, and a member of China spring association.

We Supply all kinds of Springs for all applications, If you can’t find a stock spring for your application, or would like to match a competitor’s spring not offered through this website, Our engineering staff is ready to answer your questions or assist in designing the right spring for your application.

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  • Compression Springs

    The conventional compression spring, the straight metal coil spring, has the same diameter and pitch for the entire length. This configuration is the standard coil type for Stock Compression Springs. Custom configurations can have variable diameter, pitch, or both such as

    The variable spring rate is the spring rate increases with the spring deflection. The spring rate is not constant or linear. Variable pitch springs can have multiple rates or, while the spring is compressing, they can have a progressively increasing or decreasing spring rate.

    are designing a compression spring using 0.130-in-diameter music wire, ASTM A228. The allowable maximum stress for this wire size is 0.45 × 258,000 = 116,100 psi (see Table 7.3) (Note: A more conservatively designed spring would use a multiplier of 40 percent (0.40), while a spring that is not cycled frequently can use a multiplier of 50 percent

    Compression Spring Stress. The dimensions, along with the load and deflection requirements, determine the stresses in the spring. When a compression spring is loaded, the coiled wire is stressed in torsion. The stress is greatest at the surface of the wire; as the spring is deflected, the load varies, producing a range of operating stress. Stress and stress range govern the life of the spring.

    Variable Pitch Springs– With Variable Pitch Springs, the coils are closer together in some areas and more widely spaced in others. (The spacing between adjacent coils of wire is known as pitch.) (The spacing between adjacent coils of wire is known as pitch.)

  • Variable Effort Spring Supports

    The variable support is recommended for relatively small displacement (up to about 75mm). Variable effort spring supports function on the principle of Hooke’s Law, which states that the force required to compress a spring is directly proportional to the compression of the spring.

    Apr 25, 2015 This free SolidWorks tutorial shows an easy and fast way to model a spring with variable pitch created in one sweep operation.

    Compression Springs. Compression springs offer a force when the spring is compressed axially. We manufacture custom compression springs to your exact specifications – for either static or dynamic applications. We offer complete downstream capabilities such as grinding, shot peening, heat setting, color indentification and corrosion protection.

    May 01, 2011  In some cases, a coil spring can be designed as a variable rate spring that increases load-bearing capability as it’s compressed. Variable rate coil springs are often used in chassis configurations that occasionally carry heavy loads.

    Vulcan Spring, a supplier of mass-produced custom spring solutions from design to production, brings your industrial application or POP display to life!

  • Stock Conical Tapered Compression Springs

    A cone shaped compression spring that has a tapered body with a large outer diameter at the base and a small outer diameter a the top. These stock conical (tapered) springs are made this way to provide stability when a regular compression spring buckles or bends. Stock conical (tapered) springs are also used to provide more travel.

    A compression spring is normally wound to a consistent diameter, however, we also manufacture: Multi-diameter springs; Tapered compression springs; Consistent pitch or variable pitch; Materials: choose from round wire or flat wire made out of stainless steel 304V or other spring tempered material

    Work by Variable Force, and Spring Force. The defining character of a spring is that it resists displacement from its rest position with a force which increases linearly: restoring force = - k * (displacement) where k is called the spring constant. It has units of Newtons per meter.

    Variable rate springs are easy to spot because the springs are not symmetrical. Typically, one end of the spring is wound tighter than the other end with the more tightly wound end being the softer part of the spring. As the spring is compressed, the soft coils on the tightly wound side will collapse, coming into contact with each other.

    Compression springs can be crafted in many materials, from brass to high-temperature alloys to music wire, with an equally expansive variety of coatings to choose from. They are also available in barrel, conical, variable rate, and hourglass shapes.

  • Variable Spring Supports

    Variable Spring Supports. Variables use coiled springs to support a load and allow movement. The resistance of the coil to a load changes during compression, which is why these devices are called “variables”.

    The first type of equivalent torsion spring consists of two compression springs. The spring parameters are defined as: H 0 =32mm, d =2.5mm, D =14mm, n =5, K S =28.13N/mm. Suppose that θ=0.5πrad corresponds to s =12.5mm.

    Common Compression Spring Design Terms. P Pitch = The distance from center to center of the wire in adjacent active coils. Recommended practice is to specify the number of active coils rather than pitch. C Spring Index = D/d = ratio of mean coil diameter (D) to wire diameter (d).

    Compression Springs. Helical, Conical, Hourglass and Variable Pitch Wire 0.1mm – 25.4mm diameter. Rectangular and Square section also available.

    Compression Spring Types. This is useful where the solid height is limited. Variable Rate: These springs offer a constant, or uniform pitch, and have an increasing force rate instead of a constant force rate (regular compression springs). The larger coils gradually begin to bottom as a force is applied. A variable pitch can be designed to give a uniform rate if necessary.

  • Variable Force V

    Variable Force Spring Variable force springs, also known as V-springs, deliver dependable variable force to precisely match increasing or decreasing force requirements. Most v-springs are positive gradient springs while negative gradient v-springs are also available.

    A familiar variable rate spring is the cone-shaped compression spring, most commonly found in battery boxes. The fully compressed height can be as low as one wire diameter. Variable rate springs also have the additional benefit of being laterally stable and less prone to buckling.