The document discusses reverse engineering and several projects using 3D laser scanning and reverse engineering techniques. It describes reverse engineering as discovering how a device works through analysis of its structure and function. Several tools for reverse engineering are mentioned, including 3D printers, laser sintering machines, CMM, and 3D scanners. Several projects are summarized that used 3D laser scanning for applications like creating digital part catalogs, CAD-to-part inspection, digitizing sculptures for replication, mold design and manufacture, and digital 3D CAD catalogs for parts.

1. REVERSE
ENGINEERING
DEMONSTRATIONS
Senior Engineer - Design & Development
GTDMC, Pakistan
Syed Zillay Ali

2. WHAT IS REVERSE ENGINEERING?
A process of discovering the
technological principles of a
human made device, object or
system through analysis of its
structure, function and operation

3. Reverse Engineering Tools
3D-Printer
Laser sintering machine
CMM
3D-Scanner

4. 3D LASER SCANNER
USED EXTENSIVELY FOR REVERSE
ENGINEERING

5. PROJECT-1
DIGITAL PARTS CATALOGUE
 Engine Housing for an obsolete model of agricultural Tractor vehicle required
a complete set of Digital Drawings in order to ensure future repair and
maintenance / spares manufacturability.
 The Project was taken as a challenge
 Starting by making 3D Point Clouds Data, the final CAD models for a total of 11
components were accomplished in less than 60 days
Original part Point Cloud Data Model

6. PROJECT-2
CAD-TO-PART INSPECTION
CAD VS. Cloud Inspection using
PowerInspect® & Geomagic Qualify®
Point Cloud
Original CAD Model
Original part
• A Motorcycle Chassis Trim was manufactured using newly developed Toolings and it
was required to be inspected if it conformed to the original Design.
• So using 3D Laser Scanning, points-cloud data was generated and compared against
the original 3D CAD model.
• Variations were then traced and controlled.

7. • A sculpture of Mr. Muhammad Ali Jinnah (Quaid-e-Azam) – the Founder of
Pakistan, was 3D Laser Scanned. The points-cloud data was used to
produce a 3D CAD Model.
• The 3D CAD Model was then used to produce 10 replicas of the same
sculpture through SLS Rapid Prototyping methods.
Original Sculpture Point Cloud
RP Model
3D CAD Model
PROJECT-3
DIGITIZATION OF SCULPTURE

8. Baby Chair
Mold Machining
PROJECT-4
MOULD DESIGN AND MANUFACTURE

9. Mud Flap Fuel tank Side mirror cover
Front Grill
PROJECT-5
DIGITAL 3D CAD CATALOGUES

10. Racket Helmet
Pad
Hockey
PROJECT-6
INNOVATIVE DESIGN CHANGES

11. Chair
Plastic
PROJECT-7
DIGITAL DESIGN DATA GENERATION FOR
LOAD ANALYSIS AND REINFORCEMENTS

12. TYPICAL WORKFLOW