Converting Your Scan Data to CAD Format
So you just 3D scanned your part and got the STL file. Then what?
For industrial designing and manufacturing experts, they need a proper CAD file format based on B-Rep (Boundary Representation) method to execute further design change or CAM machining. Polygon-based STL just doesn’t suit this need.
“Reverse Engineering” is an ambiguities term implying retriving the original design from a current product, which is true, but in the 3D world reverse engineering simply means redrawing a CAD model on top of the digital reference (i.e. the STL file). In other words, it’s a process to convert your polygonal file (STL or others) into a CAD file.
The output of the reverse engineering work is usually standard CAD exchange formats like STEP or IGES, in some cases even a fully parametric SolidWorks part (SLDPRT).
To make sure the redrawn CAD file retains all the curvature, flatness, angle details of the STL file, a special software deployment is required. We use QUICKSURFACE 逆向工程软件 and Mesh2Surface 逆向工程外挂 for 犀牛® as our main reverse engineering systems and we’re also the Australian and Chinese resellers of these products. Check these powerful tools if you needs to do the reverse engineering in-house.
Here are some illustrations of how the CAD files look like after reverse engineering was performed.