Research On Reverse Design Technology For Coupler Knuckle Lock

Presently, the drastic competitiveness in market, which make the products life cycles shorter and shorter, requires rapidly responding for enterprise. In industry design, the free-form shapes cannot be properly described in 3-D views so that the CAD models cannot be created. But reverse engineering (RE) technology can shorter the product development time, improve competitiveness, and overcome the special difficulties in industry design for free-form shapes. Based on the full analysis of the fields of the present research on the reverse engineering with home and foreign documents, this paper takes the wax model of Coupler knuckle lock as the object to do some in-depth research about the reverse engineering of complicated surface products. The research is as follows:1. The Model Digitizing The method of model digitizing not only influences the speed of development, but also indirectly determines the quality and speed of the reconstruction of curved surface. In this paper, it studied the digitization strategy of complicated curved surface utilizing the one-level fuzzy comprehensive judgment method. Moreover, taking the wax model of the Coupler knuckle lock for an example, it discussed the data collection technology based on CMM and the process of data handling.2. Pretreatment of Points Cloud According to the characteristic of scattered point cloud data, the issue elaborated in detail points cloud registration, which was based on the shape characteristic matching. Also, it studied the error correction and the data optimization method of scattered data, and compared the filtration method of multi-noise with the simplified method of data to find out the measurement plan of data that can satisfy the practical application. At the same time, on the basis of the need of the reconstruction of the curved surface, it researched the extract method of the...