Brief Introduction of Automobile Chassis Frame..........

2. Arun.M.Angadi
BE,Automobile

3. 1.Brief Introduction on topic
• Definition
• Types
• Functions
2.Design Details
• Design Information
• Material used
• Manufacturing Method
3. Field Visit
• Industry Details
• Manufacturing unit
• Type of Manufacturing
• Production Details

4. Definition;
• Frame is a under carriage or
structure that supports the
engine and cab(body)of the
automobile.
• It is made up of long two
members called side members
riveted together with the help
of number of cross members.
Dig of Automobile chassis Frame
Front cross
member
X-Member
Side Member

5. Functions of chassis Frame
• To carry load of the passengers
or goods carried in the body.
• To support the load of the
body, engine, gear box etc.,
• To withstand the forces caused
due to the sudden braking or
acceleration
• To withstand the stresses
caused due to the bad road
condition.
• To withstand centrifugal force
while cornering
Chassis Frame of Jeep

6. Types of Automobile chassis frames
There are three types of frames:
1.Conventional frame:
It has two long side members and 5
to 6 cross members joined together
with the help of rivets and bolts.
Frame Sections used in this type of
frame;
a. Channel Section - Good resistance to
bending
b. Tabular Section - Good resistance to
Torsion
c. Box Section - Good resistance to both
bending and Torsion
Uses: In Buses ,Trucks , Vans etc
Cont……….
Conventional
Frame

7. 2.Integral type of frame
• There is no frame and all the
assembly units are attached to the
body
• All the functions of the frame
carried out by the body itself.
Uses; In all Modern Cars,
3.Semi-Integral Frame
• In some vehicles half frame is fixed
in the front end on which engine
gear box and front suspension is
mounted.
• It has the advantage when the
vehicle is met with accident the
front frame can be taken easily to
replace the damaged chassis frame.
Uses; Tractors , Fiat Cars

8. Detail Procedure
 Material Details
 Design Details
 Manufacturing process
 Inspection

9. Material Details
Material selection of frame depends on:
 Type of Vehicle(Heavy , Light)
 Chassis Design (Engine Components location)
 Manufacturing Company
Recommended Materials:
 Cast Iron (for Heavy Vehicles)
 HSS ,Steel (Medium , Foreign Vehicles)
 Aluminum Alloys (Light Vehicles)

10. Design Details
Load Analysis:
Various loads acting on the frame are;
Short duration Load - While crossing a
broken patch.
Momentary duration Load - While taking
a curve.
Impact Loads - Due to the collision of the
vehicle.
Inertia Load - While applying brakes.
Static Loads - Loads due to chassis parts.
Over Loads - Beyond Design capacity.
Acting Loads
Frame

11. Manufacturing Process
o Drawing Projection
o Cutting
o Bending
o Welding
o Finishing & Inspection

12. 1. Drawing Projection
• Drawing is acquired from design department
• Marking is done according to design
• Allowances will be provided
• Further process will be carried out
Equipments Used
Design Software
Other tools used in Design Department

13. 2.Cutting
• It is process after drawing projection
• Cutting process is done according to marking
• Side members of frame are got by cutting the long
beam sections from a raw metal
Equipments Used
General cutting Machines
Specialized cutting Machines
CNC Cutting Machines
LAZER Cutting Machines

14. 3.Bending
• Bending process is carried out after cutting process
• Bending is done according to the angle specified.
• In frame, bending is done while fitment of cross
members.
Equipments Used
General bending Machines
Specialized bending Machines
CNC bending Machines

15. Field Visit
M.M Industrial controls
private ltd
Industrial area ,Garag Road
Dharwad
Visit
at;
Visit
on; 31/10/2011
Guided
By; M.Suresh
Engineer
M.M Industries

16. Industry Details
Organization name :M.M Industries
Location : Garag, Industrial Area
Type : Manufacturing &
Fabrication
Headed by :M.M Industrial controls
private ltd

17. Components Manufactured
Engine Cover
Earth Movers Cabin
Fuel Tanks
Silencer
Engine Cover

18. Manufacturing Details
Machines installed in Industry
CNC Laser Cutting Machine(Traumatic L 3020)
CNC Sheet Metal Cutting Machine
CNC Robot Welding Machine
Plasma Cutting Machine
Painting Section
High pressurized Spray Painting
Chemical cleaning

19. Laser Cutting Machine
Application: Metal cutting
with High Accuracy

20. Robot Welding Machine
Application: Welding is done
with high Accuracy & less
time

21. Bending Machines
Application: Bending is done any
angle with accurate Dimensions

22. Websites:
Wikipedia.com
Autopictures.com
Ask.com
Reference Books:
Automobile engineering – R.B.Gupta
Manufacturing procees – R.K.Jain