This post covers the unit wise 2 marks with answers for the subject of Robotics which is the one of the elective papers for the Mechanical Engineering in final year 7th semester.
Anna University, Chennai
Regulation 2008 & 2013
ME6010 & ME2028 Robotics
The syllabus of Robotics is given below.
Unit-1 Fundamentals of Robot
PART-A ( 2 Marks Question with Answers)
1.What is meant by Robotics?
It is the study and technology of robots.
It enables us to design automated mechanisms capable of replacing people in certain jobs.
2.Define Robot?
A machine in the form of a human being that performs the mechanical functions of a human being, but lacks sensitivity.
A reprogrammable multifunctional manipulator designed to move , materials, parts, tools, or specialized devices, through variable programmed motions for the performance of tasks.
(i)According to Physical configuration
*Cartesian coordinate configuration
*Cylindrical coordinate configuration
*Polar or spherical coordinate configuration
*Jointed arm configuration
*Selective Compliance Assembly Robot Arm (SCARA)
(ii)According to Control system
*Point to point robots
*Straight line robots
*Continuous robot
(iii)According to Movement
*Fixed robot
*Mobile robot
*Walking or legged robot
(iv)According to the Types of drive
*Pneumatic drive
*Hydraulic drive
*Electric drive
(v)According to it's Applications
*Manufacturing
*Handling
*Testing
(vi)According to the Degrees of freedom
*Single degree of freedom
*Two degree of freedom
*Three degree of freedom
*Six degrees of freedom
4.What are the factors to be considered while selecting the robot?
(i)Load carrying capacity required
(ii) Speed of movement
(iii) Number of degrees of freedom.
(iv)Reach
(v)Velocity
(vi)Weight of the robot
5.List out the robot major components?
(i)Robot arm
(ii)End of arm
(iii)Power source
(iv)Controller
(v)Sensor
(vi)Actuator
(vii)Actuator
6.What are the disadvantages of robots?
(i)High intial cost
(ii)More unemployment problems
(iii)Need of skilled labour
7.What are the rule of Robotics?
(i)Do not harm human being
(ii)Obey human being
(iii) Protect itself from harm
8. Why are robots used?
(i)To reduce production rates – Fast, Accurate, Difficulties in human nature
(ii)To avoid 3-D jobs – Dirty, Dangerous, Difficult
9.What is meant by Robot anatomy?
Study of structure of robot is called robot anatomy
Manipulator is constructed of a series of joints and links.A joint provides relative motion between the input links and the output link. Each joint provides the robot with one degree of freedom.
10.Define automation and fives it's types and benefits.
Automation:
It is a technology that is concerned with the use of mechanical, electronic and computer based system in the operation and control of production.
Types of automation
*Fixed automation
*Programmable automation
*Flexible automation
Benefits of industrial automation systems
*Improved quality ,
*safety,
*manufacturing flexibility,
*operations reliability,
*decision making
Types of wrist motions:
(i)Wrist rolls
(ii)Wrist pitch
(iii)Wrist yaws
(i)Linear joint (L-joint)
(ii)Rotational joint (R-joint)
(iii)Twisting joint(T-joint)
(iv)Revolving joint(V-joint)
(v)Orthogonal Joint (O-joint)
12.What is an end effector? Give examples.
End Effector:
It is a device that is attached to the end of the wrist arm to perform specific task.
Examples:
*Tools,
*Welding equipments,
*End of arm tooling
13.What is meant by work space and work volume?
Work Space:
The space in which the end point of the robot arm is capable of operating (or) the reach ability of robot arm is known as workspace.
Work Volume:
The volume of the space swept by the robot arm is called work volume.
Palletizing
Arranging materials on a pallet according to fixed rules.
Depalletizing
Removing in sequence, materials which have been arranged on a pallet.
(i)accuracy (ii) precision (iii)repeatability
(i)Accuracy
The ability of a robot to position its wrist end at desired target point within its reach is called accuracy.
(ii)Resolution(precision)
The smallest increment of motion or distance that can be detected or controlled by the robotic control system
(iii)Repeatability
It refers to robot’s ability to return to the programmed point when it is commanded to do so.
16. List out the types of path control?
(i)Stop-to-stop
(ii)Point-to –point
(iii)Controlled path
(iv)Continuous
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