Reverse Engineering in GTDMC (Gujranwala Tools, Dies and Moulds Centre), Gujranwala. Pakistan

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