Load cell-based measurement of compression spring constants in series and parallel configurations

Abstract

This study aims to test the elastic properties of compression springs by measuring the variable values of force and spring constant using a load cell installed on a spring tester. Selecting the right spring is a crucial factor in the manufacturing industry, especially in press tool construction, because it affects the performance, safety, and efficiency of the production process. The research method uses a quantitative approach, namely the experimental design method on Misumi standard springs in various configurations (series and parallel). The results show that the parallel configuration increases the spring constant, while the series configuration decreases the spring constant. The load cell proved to be more accurate than the manual method. Additional analysis showed non-linear deviations at large strains due to the elastic limit of the material. Data were obtained from measuring the reaction force for every 10 mm change in length using a 100 kg capacity load cell. The results showed that the parallel configuration significantly increases the spring constant value along with the number of springs used. In contrast, the series configuration actually decreases the constant due to the greater increase in total length. The measured spring height also differed by several millimeters. The conclusion obtained is that the compression spring from Misumi is in accordance with the one in the catalog, so that the compression spring can be used according to the calculation plan. This research contributes to the manufacturing industry in selecting spring configurations and opens up opportunities for further research with the integration of numerical simulations.