Diseño e implementación de una máquina CNC laser para la impresión de plantillas de circuitos SMD.

Abstract

A machine was designed and implemented to carve, cut and burn some materials with the use of CNC computer numerical control, applied to the creation of template (templates) used in welding SMT surface mount Technology circuits with high quality precision , for the use of students or people who are venturing into the creation of electronic circuits and thus do not have to depend on external companies that are dedicated to the creation of templates and that are located in the sources of the country. For the creation of the structure, a CNC laser diode machine used commercially for cutting MDF wood was used as an example. All the operation of the machine is controlled by Arduino one together with the free-use software GRBL LÀSER that allows us to convert and read the g code via a USB connection. The control of the PaP nema 17 motors is done by an additional Arduino module called cnc shield, which controls and modifies the current pulses to feed the motors and thus automatically activates the movements dictated by the g code. This machine, in addition to the creation of a template, also allows us to carve any image that we preload the software and thus give it other fines such as the use in marketing when printing cards with logos in high relief or in education when making templates to draw or paint on wood mdf or plywood.