Controlador CNC para modernización del proceso de fresado a bajo costo: caso con fresadora Supernova," Rev. ResumenSe presenta la implementación de un controlador CNC para una fresadora Alecop Supernova, compuesto por una tarjeta electrónica Motenc-lite PC100 (3 ejes), de 32 entradas analógicas y 16 entradas digitales (I/O) para datos. El computador ensamblado para la comunicación entre el controlador y la fresadora es de 512 Mb-RAM, 40Gb disco duro, procesador de 700 MHz, y SO Ubuntu 6.02-86bits, con tarjeta de gráficos de 800x600p, para ejecución del software libre EMC2. Se escogió la ejecución en entorno Axis para vista interactiva de los códigos G y de las coordenadas de la herramienta, y velocidades de husillo y corte. El funcionamiento del controlador se verificó con el maquinado de una pieza de media complejidad que requiere agujero y desbastado interno. La implementación realizada mejora la funcionalidad en el modelado de piezas, al llevar la máquina de 2½ (con el antiguo controlador Fagor 8025) a 3 grados de libertad, lo que permite ahora el movimiento simultáneo en los ejes x, y, y z, y se da así un mecanizado más limpio y detallado. Palabras clave: automatización; CNC; EMC2; fresadora Supernova. AbstractIt is presented the implementation of a CNC controller for an Allecop-Supernova milling machine. The device is comprised of a 3-axis Motenc-lite card with 32 analog inputs and 16 digital inputs (I/O). A computer was assembled to communicate the controller and the machine with specifications: 512Mb-RAM, 40Gb hard disc, 700 MHz processor and a 800x600p graphic card. The operative system Ubuntu 6.02-86bits allows the running of the free software EMC2. It was chosen to be carried out on the Axis environment to display an interactive view of the G codes, in addition to the tool coordinates and the tool and cut speeds. The functionality of the controller was verified through the machining of a medium complexity piece that required a hole and internal rough. The functionality of the milling machine was improved, moving from 2½ (with the original Fagor 8025 controller) to 3 degrees-of-freedom, by allowing now the simultaneous motion along the x, y and z axis, for a faster and cleaner machining process.
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