(1) with the formation of global market integration, there is fierce competition in the manufacturing sector, product development speed increasingly become the main contradiction. In this case, XI ' an Jiaotong University Mechanical Engineering Institute, National Engineering Research Center for rapid prototyping, rapid prototyping Engineering Research Center of the Ministry of education and independent rapid product development (rapid design and rapid tooling) capacity (cycles and costs) became a manufacturing power base of global competition.
(2) manufacturing industries to meet the ever-changing user requirements, require flexibility in manufacturing technology has a strong, with small batches or single pieces production without increasing production costs. Therefore, product development and manufacturing flexibility is key.
(3) from the perspective of technology, materials science, laser technology, computer science, CAD technology, development and popularization of new manufacturing technologies laid the technical foundation.