Based On The Reverse Design Of Product Shape Innovation Design Molded Parts

We usually take reverse engineering to clone and improve the appearance of an existingproducts or prototypes. It is the main process to obtain a three-dimensional points cloud databy three-dimensional measurement device surveying the outside surface, processing the pointcloud data with specific software by stitching, trimming, etc., acquiring the point cloud digitalmodel of modeling parts, in order to apply modulus to simulation modeling and innovation.The article conducted a study on the factors influencing the accuracy and the controlmethod, based on the digital-analogue creation process. Firstly we take point cloud data of theouter surface of the modeling parts, by using three-dimensional scanner VIVID910,processing the data by montage, denoising, patching, multi-view alignment, simplifying,streamlining and segmentation under the application of reverse software InnovMetricSoftware, so to obtain the low precision digital model of modeling. For the digital modelgeometric characteristics and model accuracy requirements, we build a set of characteristicsof plane by InnovMetric software (the number is decided by the accuracy requirement),extracting the analogue lines of features section of the plane and modeling of digital, whichis the shape of geometric characteristics. Also according to the characteristic features andmodeling accuracy requirements, in each characteristic line we get a set of feature points,taking it as a characteristic value of points. According to the model segmentation, the samecharacteristics of the area take the same number of feature points, respectively, using B curvefitting the regional characteristics, discussing on Modeling of characteristics of a unifiedparameter representation by region.product styling parts (text takes a electric car front face) ofthe outer sheet point cloud data acquisition applications InnovMetric Software reverseengineering software for film splicing point cloud data, noise removal, repair, and moredepending on the alignment, streamlined fairing and segmentation, access to low-precisionstyling pieces of digital models. The number of pieces of the mold geometry characterized bythe shape of the mold with a few precision requirements, application InnovMetric Softwarebuilds a set of features flat (its quantity and modeling accuracy related), feature extractionsection line shape with pieces of the plane modulus, which is to shape pieces the geometriccharacteristics of the line. Also according to the characteristics of characteristics and modelingaccuracy requirements, in line to take each features a set of feature points, the data points as afeature line. According to modeling pieces regional segmentation, feature lines in the samearea to take the same number of feature points, respectively, with B curve fitting of theregional characteristics of the line, the line features pieces explore the unified modelingparametric representation of the region. Integrated MATLAB2010b software, Microsoft SQL Server2005database technology,research product information modeling pieces feature line database system developmentmethods and technologies to achieve the automatic information management of numerouspieces of characteristic lines, and geometric surfaces.Taking the outer surface geometry feature points on line as the value points, applying thestring-length parameterization method, and the least square method of calculation in order tomeet the accuracy requirements, constructing B curve, and replace characteristic lines with it.Model geometry and surface fitting can be seen as a two-stage B curve fitting, i.e. fittingeach characteristics line horizontal with line B curve fitting firstly. On the basis of this, fittingB curve vertically, so to construct a approximate grid surface. Take investigation on thetechniques of reconstruction of a given precision surface, by applying curvature analysis inPro/E reconstructed surface error analysisApplication of UG software will automatically generate entities pattern, decorate electricvehicle front face (Matlab model) and generate a new front styling design, Save the Matlabmodel as STEP format by Pro/E software. Open Mathematical model and the real pattern bysoftware Rhino, combine the patterns with front face of electric car by UV expandingfunction.Application of innovative solutions to the digital-analog modeling parts direct injectionmold design. In the Pro/E software implemented by Boolean mold cavity and core buildnumber, and use Pro/E NC modules, post-processing module can be prepared CNC machinecontrol system to recognize the NC program.