Application report
TechArt rear fenders scan and reverse engineer the rear fenders of TechArt GT street with the Breuckmann high-precision measuring system StereoScan3D.
customer
“Tech Art Automotive Design†is a highly successful automotive design company in Germany whose business focuses on the development and production of individual Porsche sports cars that meet the needs of users.
"Tech Art Automotive Design" products include both the overall body and small parts on the interior and engine.
The body model was handcrafted by Tech Art's designer with fiberglass. In order to make the model mass-produced, the model scan was digitized using the high-resolution 3D scanning system of the German breuckmann company.
project description
The object being measured by the customer's project is the rear fender of a hand-made GT street model. This new model of the rear fender is made of fiberglass. In order to be able to mass-produce the rear fender and the tools needed for production, the car's rear fender must be scanned in three dimensions to obtain complete 3D data. These data are used for dimensional shape inspection during mold making and production of the rear fender. Because it is almost impossible to make a perfect model of a perfect and symmetrical rear fender, a half model was made with fiberglass. After the digitization of this model, plus the mirrored data of this model, a perfect and symmetrical rear fender is generated with professional software.
This project consists of two phases:
1 Half rear fenders are digitized using the data system of Breuckmann.
2 Generate a surface model using the professional reverse engineering software Rapidform XOR2, which is the final result.
In order to meet the high precision requirements of the measurement, the 3D scanning system utilizes the high precision system Stereo Scan3D from Germany Breckmann and the DPA Pro camera measurement system from AIcon.
operating
The combination of the Breuckmann high-end measuring system Stereo Scan3d and the photogrammetry method produces three-dimensional data of the mesh-like high-precision rear fender.
First, the coded identification points are applied to the entire surface of the measurement object and then measured overall by AICON's photogrammetric system. After all the marking points have been measured, a small area scan is started with the German Breckmann Stereo Scan3d. Next, the position information of the identification points measured by the AICON photographing is used to determine the orientation information between the partial scan data and to accurately connect them to form the three-dimensional data of the overall rear fender. This combination of holographic and local 3D scanning measurements provides an accurate measurement of the best large objects, ensuring measurement integrity and accuracy.
Based on this scanned data, a surface data model is generated by the reverse engineering software Rapidform XOR2.
Measuring body by photogrammetry system
Calibration scanner
Single scan
Data processing
Generating surface data model
Accuracy detection by comparison between scanned data and CAD data
Output surface data in the required standard format (eg IGES/STEP)
result
In this project, the breuckmann measurement system provides an object surface data in a standard format (IGES). Based on this data, Tech Art can carry out further design work to form perfect CAD data. Finally, in cooperation with the Maucher Model Construction Company, a manufacturer in the field of tools and model construction, the tools and prototypes needed to produce this series of products.
Object surface data from CAD can be compared to the sample scan data made to determine the accuracy of the sample. This is very important in the process of reverse engineering.
Concerned about surprises
Tags: CAD; data; design
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