Design and Development of a Prototype Armature Coil Removing Machine for Small Scale Single Phase Motors

Abstract

Motors are widely used in many industrial types of machinery for different purposes such as traction systems and power generation. Therefore, these motors need to be properly maintained or repaired to ensure continuous operation of the machinery. The current practices for manual motor repairing employed locally are more time-consuming and unsafe for the workers. Removing and replacing the armature coil is one of the main tasks of repairing defective motors. According to the literature survey, there were no specially designed tools and types of machinery for removing the armature coil. Therefore, to fulfill the requirement specially designed armature coil removing machine was developed to operate more safely and efficiently. First the armature is attached to the machine armature holding system manually. The armature removal process is carried out in two different stages in the developed machine. In the first stage single point lathe cutting tool is fed to the rotating armature coil to cut the coil. After the first stage armature coil is fed to a specially designed ring, that is situated at the lower part of the developed machine to remove the coil from the armature. The size of the ring needs to be adjusted manually by adjusting the screws. The developed machine can be used to remove the defected armature coil as a safer and more efficient method instead of the conventional manual method.