Diseño y fabricación de un dispositivo para alesado en agujeros y articulaciones de los brazos en las retroexcavadoras

Abstract

During the normal operation of yellow machinery, relative movement occurs between the parts that are in contact, this movement, accompanied by high workloads, generates mechanical wear on the elements and structures that hold them, it is common to find changes diameter or variations of the geometry in the main parts such as arms, pins and buckets, the repair of this type of wear is carried out by reconstructing the hole by means of welding, to later carry out the operation called boring, which It consists of adjusting the reconstructed diameter to the initial standard, using chip removal roughing. As a second option, it is contemplated to replace the affected parts, although this option is considered impractical. During the present investigation, the conceptual and theoretical design of a machine that manages to carry out the boring process, its subsequent construction, and start-up in difficult-to-access areas was proposed. For this, a finite element model was developed where the geometry corresponds to the real machine built. As a final result, the construction and start-up of the machine is presented, which is in operation in the department of Caquetá.