Reverse Design And Mould CNC Machining Of Track Link Parts

With the continuous development of China’s manufacturing industry, especially the "China manufacturing 2025 planning" and "industrial 4.0", it is just is not enough for China to be strong with a manufacturing power. The development of manufacturing industry can not be separated from advanced manufacturing technology, and advanced manufacturing technology is the key to advanced design technology. With the development of CAD as the main technology of modern design technology, the development of reverse design, concurrent design, green design, intelligent design method is more and more widely used. Especially the reverse technology, because of its design features to agile response to and adapt to the requirements of production, rapid digestion and absorption of worldwide advanced design technology, shorten the manufacturing cycle of product design, suitable for complex curved surface parts of the renovation and re innovation, development and application prospect of very broad.Track link parts are crawler walking mechanism is a very important part of, and crawler walking mechanism is widely used in the motion mechanism of bulldozers, excavators, transport equipment and various auxiliary equipment, is widely used in mines mining, water conservancy project construction, road bridge construction, agricultural mechanization project, building construction, national defense construction and engineering projects. Track link parts in the use process due to the wear failure and other reasons will lead to walking mechanism for a variety of fault, to the users of engineering machinery to bring economic losses and may lead to operating personnel casualty accidents. Therefore, research and optimization design of its structure and principle is very necessary.This topic in the reverse engineering principle, method and Application Research Based on, combined with CAD technology, using a laser scanner, Geomagic reverse design software, CATIA CAD software and other tools, to track link were reverse design and Simulation of interference optimization research, mainly do the following several aspects of work:1. Research at home and abroad in the field of CAD/CAM on reverse engineering, and motion analysis and structure optimization of the advanced technologies and methods, especially the reverse design process of data acquisition, data processing, model reconstruction principle, process and use of equipment and software tools and analysis of reverse design and optimization of the mainstream methods and development trend.2.Research on the acquisition of the track link real 3D digital information. From the scanner device selection and application, point cloud data acquisition, software reverse of point cloud analysis three aspects of research, using existing 3D scanning instrument digital test was carried out to the track link, get the ASC format contains the original surface point cloud data file. For the data processing of point cloud data based on Geomagic software, including read the point cloud data, multi view point cloud data alignment, redundant point cloud data sieve, etc. in addition to the work, and ultimately generate STL file for later model reconstruction and optimization of the system.3. Using CATIA software to track link parts of research on 3D model reconstruction, the reverse object model with feature data reconstruction. This paper introduces the use of CATIA software in the reverse design, including the basic operation of the software and the order of the surface reconstruction. Eventually in the CATIA platform completed the track link parts reverse design, realize the CAD system using the original design parameters to the digital product model.4. To track link structure, principle, manufacture technology research, determine the manufacturing process of hot forging die, and a cam of die design, mold manufacturing and processing tool path is simulated by using five axis NC machine tool, realizes the prototype representation and modification.Through the above research work, the final completion of the track link of reverse design, realizes the prototype parts of the 3D model reconstruction, the link parts of motion analysis and structure optimization. It not only solves the parts, and for China’s equipment manufacturing enterprise in design and production process to make full use of reverse engineering technology, digital development advantage, adapt intelligent production provides a reference, has certain theory significance and practical significance in the field of mechanical engineering design and manufacturing.