Model for mechanical design teaching

The utility model discloses a model for mechanical design teaching. The model comprises a projection box body, a trapezoidal table, a circular table, a cylinder and a tetrahedron. Vertical mounting holes are formed in the middles of the trapezoidal table, the circular table and the cylinder; each of the trapezoidal table, the circular table and the cylinder comprises two detachably connected splicing parts; horizontal circular insertion holes, triangular insertion holes and quadrilateral insertion holes are formed in the side walls of the trapezoidal table, the circular table, the cylinder andthe tetrahedron; cylinders, triangular prisms and quadrangular prisms are inserted into the circular insertion holes, the triangular insertion holes and the quadrangular insertion holes; lamp bulbs and projection cloth are arranged on the two opposite side walls of the projection box body. Therefore, the embodiment of the utility model provides a model for mechanical design teaching. Plane three-dimensional intersection,