Estudio, diseño e implementación de un sistema automatizado para una máquina torsionadora de forja en frío.

Abstract

In the current research work, a cold forging twisting machine was automated for FUEGO Company in Riobamba. This is a base unit to work with cold iron for the production of ornamental pieces like: bars, scrolls and pine cones. Through the machine automation the uniformity of the finished parts was achieved, and as a result, the production volume increased. The components selection of the control panel and the front panel was carried out after an analysis of the machine: programmable logic controller (PLC), human machine interface (HMI), sensors, dimensioning of conductors and protections for the implementation of the system according to the developed connection diagrams. The PLC stores in its memory the program where the sequences corresponding to each type of piece are contemplated. Meanwhile, actions according to the sensor data and provided instructions from the front panel are executed. Once integrated all systems, various tests were carried out in the form of scrolls, pine cones and twisted rod and by trial/error and observation the correct movement of the actuators were determined. The results of the machine (automatic method) have low variance in the parameters measured on each piece: scroll (0,0225 mm2 and 0,068 mm2), pine cone (0,211 mm2 and 0,926 mm2) and twisted rod (0,02 mm2 and 0,0067 mm2) with reduced processing times unlike to the manual method where the time and the variance of the measured parameters on each piece are higher. Thus, the uniformity in finished products is stated, and the measured can be standard, in addition to, the short time which is consumed in the process. It is recommended the user checking the instruction manual prior the machine use.