コイルばねの弾性係数と低温焼なましによる形状変化について

抄録

Cold-formed springs are also called precision springs and are one of the mechanical elements that require high spring accuracy shape and spring constant. In order to improve the accuracy of these springs, it is indispensable to improve the accuracy of each factor related to the spring constant. In this paper, we will discuss the variations in elastic modulus and coil diameter after low-temperature annealing, which are considered to play an important role. Especially, we reviewed a difference in elastic modulus depending on the measurement method, and the variations in coil diameter after low-temperature annealing, and then studied the cause of these issues suggesting the problems and remaining issues.