Research Of Screw Drill CAD/CAPP System Based On PDM

With the development of manufacturing infomationization, the technologies of CAD and CAPP have been widely used in enterprises. Their applications in the business accelerate the speed of design and lower the cost of products, and then improve the quality of products and the competitiveness of enterprises.Screw drill is the one of the most widely used down hole motor, which has an important effect on the development of the oil industry. Therefore, it is very important to research CAD and CAPP. We need to apply the superiority of information to the design and production process of screw drill especially in the information age.Firstly, this paper introduces the situation of development and application of screw drill in domestic and foreign, and proposes the necessity and goal in development of the CAD and CAPP system of screw drill which is based on PDM.Secondly, according to some design material of enterprises, we finish the second development of CAD and establish the chart block storehouse to carry on modular design to the graph of screw drill by combing with the structure and technology features of screw drill on the base of using VBA, VLISP and VB to design the system in Windows. We also complete the craft storehouse design, predigest the development process of screw drill and realize the management to craft according to the characteristic and request of enterprises. This system establishes the product data management module which can help us inquiry and amend product material quickly. And the module improves the efficiency of product design and meets the needs of enterprises of screw drill and increases some special management module such as establishing user jurisdiction.Finally, the paper summarizes the main problems in system development and puts forward the reasonable proposal to the next research.