Reverse engineering involves scanning a physical object to capture its dimensions, and creating a digital 3D model that matches either the original design intent or the as-built form of the item. When seeking to match the original design intent, it’s also important to identify manufacturing defects and understand how components wear and degrade over time.
Reverse engineering software is used to convert the output scan data into an editable solid model that’s compatible with your current CAD program. These models can be provided in neutral CAD formats such as IGES, STEP or Parasolid. Or we can provide native SolidWorks files with a complete feature tree, allowing for easy part modification if required. These models are constructed as if they were engineered from scratch, making them ideal for altering or redesigning parts.
If you’d like to discover how reverse engineering can solve the problem of missing CAD data then contact Absolute3D today to discuss your project.
Methods Used to Create CAD Models from Scan Data
VERY CLEAN MODEL
We only use geometrical shapes, resulting in a clean model with a much smaller file size.
HIGHLY COMPATIBLE WITH OTHER CAD SOFTWARE
This type of model can be loaded into any CAD program, allowing for easy part modification.
ACCURACY DEPENDING ON THE PART
We generally build the model with the original design intent in mind. Thus, higher deviations are to be expected in areas that are damaged or have worn over time.
There will be some nurbs surfaces in the result but they will have a low degree of complexity. This keeps the file size and the room for translation errors also to a minimum.
AESTHETICAL FREEFORM MODELS
When using this type of nurbs surfaces we are able to catch the shape of freeform object. This would not be possible with the geometrical approach.
LONGER MODELING TIME
With this method it is often a matter of trial and error to get to an accurate and clean result. This means that it is more time consuming than the other methods.
The model consists of small high degree nurbs surfaces. These surfaces have the ability to closely follow the original mesh. Therefore the 3D CAD design will be very close to the original scan and physical part.
The 3D CAD design is built by an automatic surfacing function. There are limited options available to change the settings in order to improve the result, but the biggest advantage is that the model is generated relatively fast.
NO DETAILS AND SHARP EDGES
Because of the fitting principles and the fact that all the surfaces need to be tangent to one another, small details and sharp edges will get lost. So if your model has sharp edges we will use one of the other or a combination of multiple methods.