Diseño y construcción de una herramienta neumática orientada al cambio de amortiguadores con espirales para el taller de Ingeniería Automotriz de la ESPOCH.

Abstract

The aim of this present research is to design and build a pneumatic tool oriented to the change of shock absorbers with coil springs for the School of Automotive Engineering repair shop. As a problem, there is a great risk and delay of compressing coil springs with conventional tools. For its design, it was started with a laboratory analysis. Different types of cars coil springs on the market were subjected to compression in the universal machine. As a result, it was possible to determine the maximum force necessary to compress them. Once this force has been obtained, it began with the conceptual design of the tool. Therefore, it was possible to evaluate the different alternatives for the execution of this project. In consequence, the number 1 had the best qualities. The pneumatic elements were then selected using the FESTO FLUIDSIM 3.6 software. Once the elements have been selected, it was started with the pneumatic cylinder measurement, based on the data obtained from the air compressor in the Automotive Engineering repair shop and the maximum force obtained in the laboratory tests. Subsequently, the modeling of the tool was started with the help of SOLIDWORKS 2015 software. Once the necessary measures were obtained, a static analysis was carried out on both the basic structure and each element to guarantee a safety factor greater than 1.3, using the ANSYS WORKBENCH R16.1 software. The pneumatic tool was built with all the necessary calculations and measurements which was tested, perfectly performing the required function, compressing all kinds of coil springs without problems and performing the required operation 3 times faster than a conventional tool, as well as providing safety and minimum effort for the operator. It is recommended that the guide bars are keep lubricated to avoid noise and wear.