REVERSE ENGINEERING

• Reverse engineering or digitizing a physical part is a critical task for any mold and pattern shop.

• Most customers say that they design all of their parts on a CAD system and drafting; however the reality isn’t that simple, nearly every shop is continually asked to duplicate or reverse engineer parts.

• Many mold makers use CMM’s or CNC (Computerized Numerical Control) milling machine tools for reverse engineering.

• Parts have become so complex that takes hundreds of thousands of points to create an accurate 3D model within hour or even days on CMM.

• The contact digitizer probes used on these machines are also limited in the geometries that they can accurately reverse engineer.

• Some parts have undercuts or indentations that are too small for the probe to enter. There are also some parts with 3D contours that are so complicated that it would just take too long to accurately digitize them with point by point.

• The resulting coordinate points also have an offset calculation that is needed to vectorize the data that rarely gets calculated into the measurement accurately another critical measurement task for nearly every mold maker is the need provide accurate measurement of prototype parts in order to evaluate the performance of the mold and process.

• Once the engineers are satisfied, they set up the production operation and produce the first article parts. These parts are carefully measured and compared to the manufacturer’s specifications.

ADVANTAGES:

• Processing time is very low

• High accuracy

• Very easy to involve in modeling and production.

• More reliable

Project  Description:

Divija  have done this projects  using Faro laser scanning, the laser probe electronics translate the video image of the line into 3D coordinates, providing real-time 3D coordinate data that gives the operator immediate feedback on areas that might have been missed. Laser scanners are able to quickly measure large parts while generating far greater numbers of data points than mechanical touch probes without the need for templates or fixtures.

First of all, laser scanning takes far less time than a touch digitizer or scanner because, instead of collecting points one by one, the scanner picks up thousands of points every second. It’s like the difference between painting with a spray gun and a nailbrush. Instead of spending days to reverse engineer a complicated part, it can now be done in hours.
Second, this method produces a far more detailed and accurate point cloud, typically containing several million points that can be used to replicate into CAD models even the most complicated part to demanding tolerances. Laser scanning also does away with other limitations of a digitizer probe such as its inability to accurately define small features or to measure soft parts.
  
The Reverse Engineering Software (like Geomagic STUDIO. ) provided with the scanner greatly simplifies the process of moving from point cloud to computer aided design (CAD) model, making it possible in minimal time to generate a CAD model of the scanned part that faithfully duplicates the original part.  The Inspection Software (like Geomagic QUALIFY.) can be used to compare original design geometry to the actual physical part, generating an overall graduated color error plot that shows in a glance where and by how much, surfaces deviate from the original design.

Some of our projects portfolios are as follows.
 

PORTFOLIOS

PLASTICS

CASTING

STONE

ARCHITECTURE