Diseño y fabricación de una máquina lanzadora de pelotas de tenis de campo

Abstract

Designing and manufacturing of a prototype machine launch of tennis ball of field by using rotating wheels and controlled vertical movement for a scheduled training system. The fulfillment of the objectives was based on: bibliographic review, dialectic method, to have a management of the information and historical method, due to was used previous sources that helped find the main features of this type of machines on the international market. It managed to give three effects to the tennis ball thanks to the variation of speed in CC motors using Arduino and with a remote control. It was used Computer Assisted Draw tools (CAD) for the simulation and design of the mechanisms present in the machine. It was obtained a machine fitted with wheels that, when turning with a speed of 2750 rpm, manage to transmit enough kinetic energy to the tennis ball getting the shoot with three effects of launch: Slide, Top Spin and Flat Spin, similar to a player average. It has a variable range that spans the length of the court; the average speed of shot of tennis ball is 56 m/s, this was confirmed by two methods: by using of an application for smart phone and solving equations of kinematics. It is recommended that you make use of machines of tennis training like this one to facilitate the teaching and improvement of this spot. This prototype will serve as guide for future research and developments in this field.