Diseño y construcción de una roladora de tool semiautomática mediante un variador de frecuencia para el moldeo de placas.

Abstract

The semiautomatic sheet bending machine is build due to the necessity of the company Mecanizados de Precisión to determine the viability of the present project, the microenterprise workers took surveys, which confirmed they need this machine to meet the roller demand that the industrial market requires. The semiautomatic bender was built based on previous research, technical visits to workrooms, acquired knowledge during the career and taking in mind the establishment needs. The pieces of this machine were manufactured in the design and construction stage furthermore, the gearmotor and the chain and cogwheel movement transmission system were selected, focusing in the efficiency for the power transmission required to roll different materials. Three types of material with different thickness for the operation tests were employed for the functioning tests. The first rolling test used a 1 mm thickness sheet, there were no difficulties observed during the dragging of material between the rollers, getting a cylinder without creases. On the second test it was employed a 3 mm thickness sheet, there was not any difficulty detected during the dragging of material, but in the pre bending the operator must be present, a cylinder in perfect conditions was obtained. Finally, the last test employed a 4 mm thickness sheet, in the pre bending the operator must apply strength for the material entry between the rollers and the machine time increased. The applied tests determined that the maximum value that a material can be rolled is 4 mm, so the machine manages to make cylinders with the desired blending.