Estudio comparativo de metodologías de dibujo técnico para entrenar la visión espacial

Abstract

New technologies and computer-aided design (CAD) applications have changed the teaching of technical drawing in recent years, leading its study towards new paradigms. These paradigms have allowed the emergence of different technical drawing methodologies for spatial vision training. During the first year of university studies, students of Engineering degrees study some basic Graphic Engineering subject. One of the main objectives of this subject is to improve the capacity of spatial vision.

This work aims to study and compare different methodologies used to train the spatial vision in the subject of Graphic Expression of the degree of Agrifood Engineering, in which most of the students lack previous experience in technical drawing. A practical exercise has been proposed that consists in obtaining an axonometric view from its dihedral views through the use of three different methods: through the use of classic drawing instruments, through 2D computer delineation, and through 3D modeling. The results show that the classic drawing instruments allow obtaining quick and approximate solutions. 3D models improve spatial vision in students. The 2D delineation method allows for accurate solutions and a wider range of axonometric (not just isometric) views, but it also requires a major effort and time for students.