Diseño e implementación de un horómetro para el control “Power On” del torno DMTG del taller de máquinas herramientas de la empresa Novacero S.A. planta Lasso.

Abstract

It was designed and implemented an hour meter for the “POWER ON” of the lathe DMTG that allows registering the effective functioning time of the machine under defined parameters. The hour meter records the data (hours) if the operation (finishing, threading, and roughing) is in electricity ranges, vibration, and RPM established in the SET POINT. The RPM which should perform each operation are set according to the diameter and material of the work piece and the material of the cutting tool. The electricity is a condition that determines whether if this is scheming or empty. In addition, to ensure that indeed is being done cutting the piece an accelerometer installed in the turret tool holders. To measure emgine power conditioning stage with the TC-Transducer assembly was implemented; TC delivers a signal among 0-5A to the transducer and converts it to a value between 0-10V to enter it for the analog input of the Programmable Logic Controller (PLC). The RPM were measured through an inductive sensor that detects the tips coupled to the spindle ring, the pulses generated enter a digital input of the PLC and by a Fast Controller enabled with the TIA Portal program are sampled for 1 second to get its equivalent in RPM. The implementation of the hour meter allowed effectively determine how long the machine is loaded, standardize the work done in the workshop and get an indicator in relation hours/machine worked. With proper conditioning of control signals could manipulate and bring them to levels that are easily recognizable by the controller for further processing. A function waiting for the main cycles must be added, this is to avoid slowing down the application and saturate the memory of the CPU.