CHASSIS
GENERAL DEFINITION A chassis consists of an internal framework that supports a manmade object. It's analogous to an animal's skeleton. An example of a chassis is the under part of a motor vehicle, consisting of the frame (on which the body is mounted) with the wheels and machinery.
THE REQUISITE DEFINITION The chassis is the backbone of the ROBOT. Without a proper chassis the robot is not fit for the tracks. Great emphasis has to be laid on the design of a structurally sound chassis design which will not give in under the extreme pressures an robot has to go through.
ME FIRST When you start with your robot, you ll wonder what first?? Answer is very simple.chassis since chassis is the backbone as said, it has to be defined and designed properly with complete knowledge of strength of materials and mechanical works.
TYPES OF CHASSIS Ladder Chassis Tubular Space Frame Monocoque ULSAB Monocoque Backbone Chassis
The above mentioned types are types of automotive chassis which correspond to robot chassis because the robot we make corresponds automobiles If we study this topic in depth u ll see that its all about creativity and thought.your mechanical imagination and sense must be good enough.
LADDER CHASSIS As the name suggests, it s a chassis in form of a ladder. My suggestion is to use this if height of robot is over 700. In this--- two longitudinal rails interconnected by several lateral and cross braces. The longitude members are the main stress member. They deal with the load and also the longitudinal forces caused by acceleration and braking. The lateral and cross members provide resistance to lateral forces and further increase torsional rigidity.
Tubular Space Frame Tubular space frame chassis employs dozens of circular-section tubes (some may use square-section tubes for easier connection to the body panels, though circular section provides the maximum strength) position in different directions to provide mechanical strength against forces from anywhere. These tubes are welded together and forms a very complex structure,
Monocoque monocoque is a one-piece structure which defines the overall shape of the car. Its simple to build one and can be coupled with a lot of things to increase its strength One of its main advantage is space efficiency
ULSAB Monocoque This one is same as monocoque ony diffrence is that ere we use composite materials instead of normal steel and all.
Backbone Chassis Backbone chassis is very simple: a strong tubular backbone (usually in rectangular section) connects the front and rear motors and provides nearly all the mechanical strength This one is strong for small robots One has to use glass fiber or PVC to make that rectangular piece of backbone.
Suggestions WHAT WE SUGGEST IS LADDER, BACKBONE AND MONOCOQUE CHASSIS Rest depends on your creativity and thought process
Materials to be used Steel Aluminum Fe Composite metals Wood PVC Rubber
Before selecting the material and forming the design you must be aware of weight of your motors and batteries..as overall weight of robot must be less even lesser than the given limit. Your chassis must be strong not heavy. One can use strength of materials lab for investigation n research.
Where to make one LABS are quite sufficient for fabricating one Though one can take help from professional workers available in markets.
How to make one The subject manufacturing process will give you sufficient experience and knowledge for fabrication, rest you can consult senior team members for help.and even your senior friend.
With this I would like conclude the presentation wishing all of you best of luck for the event
Have fun
Thanks