Modelado CAD-CAM y fabricación de un prototipo de busto humano, utilizando un router CNC Multieje.

Abstract

With the development of this graduation project, a human bust to scale was manufactured, using CNC technology due to its geometry, it was essential to use a machine of 5-axes. The proper software was selected on the basis of a weighting table where several factors were allocated on the basis of design criteria and flexibility, being selected GOSCAM 3D software for the scanning process, Freeforn Geomagic software for modeling, and Visualmill 5.0 for the design. The bust was modeled to a prudential scale according to real data and dimensions with the help of a selected design template. With the established model, the respective codes G from Visualmill 5.0 software were obtained. For this, it was necessary to introduce the basic geometry, the unprocessed material, dimensions, and select the type of tool. Finally, a simulation was made in order to check the parameters selected were appropriate. The human bust to scale was made in Nylon in the HY-3040 China Deskpot Mini 5-axis CNC Router machine, Due to, the line of code G had a significant number, it was entered in 2 groups. Previously calculations of speed and progress in the cutting tool were performed. At the end of the processing, a model with exact dimensions or geometries to the design was obtained. The manufacturing process lasted for 14 hours, 45 minutes, and 15 seconds. This result was due to the construction of the model in the 5-axis machine. Because of its complex geometry, its construction would had been impossible on another machine. In conclusion, it can be argued that the codes G are fundamental, because if they are generated in a wrong way, the machine takes in different directions. To get a piece with good surface finish, it is advisable to calculate the proper cutting speed according to the diameter of the tool. The simulations in the software are fundamental to check for possible failures in the machining.