The spring positioning pin is mainly used to buffer vibration and impact. The elastic positioning pin is designed based on the concept of a coil spring. The elasticity of the spring positioning pin allows it to be pressed into the hole and still maintain elasticity after being installed in the hole. If there is no elasticity, the load on the pin will be transmitted around the hole. Usually, because the hole is softer than the pin, it will cause the hole to stretch or expand, and the fit between the hole and the pin will become loose, increasing impact and hole damage. Chances are, the inevitable result is premature component failure.
If properly applied, the elasticity of spring pins can cushion vibration and impact, thus preventing damage to the holes in the component and maximizing product life cycle. Uniform strength and elasticity The direction of the force does not affect the elasticity and shear strength of the spring locating pin. The pin shrinks from the outer ring to the inner ring. When pressure is applied to the pin and the pressure is released, such as excessive vibration or impact, the pin shrinks and expands synchronously. Excessive load will cause the pin to shrink into a solid shape, and further stress will cause shear failure. With the right application, this should not happen.
The stress transmitted to the pin during the assembly process, as well as the applied load, vibration and impact force, are evenly distributed throughout the spring positioning pin. This characteristic is interrelated with the strength and elasticity uniformity of the pin and is an inherent feature of the coil spring design. The concentration of stress will cause a certain point to be particularly fragile, leading to premature fatigue failure of the component. The spring positioning pin will not have stress concentrated at a certain point. Load Type Coiled Spring Dowel Pins must have the appropriate combination of resiliency, strength, diameter and mating component materials to achieve optimal pin performance. The strength and elasticity of the pin must be balanced against each other.
If the pin is too strong when a load is applied, it will not be able to shrink and will cause hole damage. If the pin is not strong enough, it will shrink excessively and will cause failure. Strength and elasticity must be balanced, and the diameter must be suitable to conduct the applied load without damaging the hole wall. This is why spring dowels offer different load types. The purpose is to achieve a balance of strength, elasticity and diameter to cope with different hole materials.
