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Accurate 3D CAD Model through Reverse Engineering Technique

Posted by: Hi-Tech | Posted on: March 1st, 2013

Reverse Engineering Services

In Reverse Engineering, any existing electronic component or mechanical device is duplicated after analysis of its structure, function and operation. The hardware is analysed for commercial or military gain. An object is measured and then reconstructed as a 3D model.

Talking about Reverse Engineering in the field of hardware, it is actually something you did as a little naughty child and were scolded for. Had you blurted out this scientific term then, you would have escaped all the flack!!

Today, Reverse engineering is being used in diverse fields like electronics, mechanical, software, automotive and entertainment industry. It is being used in manufacturing industries and  medical industries, military  and research work.

Need for Reverse Engineering:

3D scanning technologies, such as laser scanners, computed tomography (CT), CMMs(Coordinate Measuring Machines) and structured light digitizers are used to measure the physical objects. The physical model inspires the making of CAD model.

Reverse engineering is done when –

•    A Certain part is essential for a system.
•    A Product is no longer being produced by the original manufacturer.
•    Proper documentation  of  original design has not been done.
•    To decrease product development time.
•    When customer wants a product that is no longer manufactured by the original manufacturer.
•    A new machine is launched in the market and as a competitor; you buy one and disassemble it just to understand what goes inside that makes it work.

For instance, in computer programming, source codes are often reused after making just a few variations. Even the building designs are copied with few adjustments here and there to hand you over the awe inspiring space you so much cherish!

Today, we have software and advanced machines aiding us in this entire process. 3D images of manufactured parts (in absence of a blueprint for it) is taken using CMM(Coordinate Measuring Machine). A 3D wire frame is thus generated which is displayed on the monitor and dimensioned. By using Reverse Engineering, a product can be rendered into digital form, modeled again and exported for rapid prototyping or rapid manufacturing.

Data Acquisition in Reverse Engineering:

An important aspect of Reverse engineering is data acquisition and so multiple scans of the surface are taken in order to measure a part appropriately. Data acquisition methods can be non-contact methods or tactile contact methods such as CMMs etc. Hybrid modeling system combines all of these measuring methods.

These diverse methods interact with the surface using light, magnetism, sound or contact with physical  surface. The speed, amount of data analysis and number of scans taken depends on the type of sensor selected and material make up of the part being scanned which is indeed a challenging task.


Multiple views of selected parts ensure an improved 3D CAD model. Computer Vision Applications deal with artificial intelligence and processing of real world images. Reverse Engineering is actually a call forward in the field of engineering and technology.

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