Desenvolvimento de prototipo de maquina CNC de baixo custo para processos de corte e gravacao em micro e pequenas empresas
This work presents the development of a prototype CNC machine (Computer Numerical Command) of small size and low cost for use in the cutting and engraving processes in micro and small companies of the graphic, jewellery, handicraft, wood, plastic and others branches. The work demonstrates the development of mechanical structure, control drivers and GUI software. The mechanical structure was built in a gantry format and enables the tool to be moved in three dimensions (X, Y and Z) on a work table. The control drivers are designed in PCB format (Printed Circuit Board) and are responsible for controlling stepper motors for machine movement. For the user to program and adjust the CNC code and machine features, a graphical interface software has been created. To manage the control of the machine, an Arduino microcontroller board was used, converting the communication between graphic interface and electronic hardware. The developed system was validated with cutting and engraving tests on MDF sheets, which are presented in this work. The results obtained in these tests demonstrated that the equipment is able to perform the operations in a way compatible with similar systems, also meeting the criteria of low cost.