The application of human-computer interaction technology in the teaching reform of mechanical drawing

To establish the mechanical drawing teaching system based on human-computer interaction technology, using unity5.5 software and AutoCAD 2 d images into 3-d shape, and through the leap motion sensors to realize human-machine interaction, through gestures or the mouse to control the rotation of the three dimensional figure, scaling and cutting, make obscure difficult mechanical drawing lessons lively and interesting, which widens the stereoscopic thinking of students, inspired their interest in learning.