design and mechanism of robotic arm

DESIGN AND MECHANISM OF ROBOTIC ARM

PRESENTED BY:CH.LAVANEETH(08J11A0310)

S.NARENDRA(08J11A0340)R.ASHIK(08J11A0352)

V .SRINU(08J11A0364)

Introduction of robotRobotics is the branch of technology that deals with the design, construction, operation, structural disposition, manufacture and application of robots. Robotics is related to the sciences of electronics, engineering, mechanics, mechatronics , and software.A first particular new innovation in robot design is the open sourcing of robot-projects.The second is Evolutionary Robots. This is a methodology that uses evolutionary computation to help design robots, especially the body form, or motion and behavior controllers.

Characteristics of a robot

ProgrammabilityMobilityMechanical capabilityFlexibilitySensors

Laws of Robotics

Isaac Asimov's Three Laws of Robotics

First Law: A robot may not injure a human being, or, through inaction, allow a human being to come to harm.

Second Law: A robot must obey orders given it by human beings, except where such orders would conflict with the First Law.

Third Law: A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

Construction & Working of the Robot

a)Mechanical platforms- the hardware base Sensorsb) Actuators (Motors)c)Driving mechanisms (Kinematics and dynamics)d)Power suppliese)Microcontroller systemsf)Languagesg)Applications of robotics

ROBOTIC APPLICATIONSIndustries Using RobotsAgricultureAutomobileConstructionEntertainmentHealth care: hospitals, patient-care, surgery , research, etc.Laboratories: science, engineering , etc.Law enforcement: surveillance, patrol, etc.ManufacturingMilitary: demining, surveillance, attack, etc.Mining, excavation, and explorationTransportation: air, ground, rail, space, etc.Utilities: gas, water, and electricWarehouses

Industrial RobotsMaterial handlingMaterial transferMachine loading and/or unloadingSpot weldingContinuous arc weldingSpray coatingAssemblyInspection

Advantages of Automation toolsReplacing human operators in tasks that involve hard physical or monotonous work.Replacing humans in tasks done in dangerous environments (i.e. fire, space, volcanoes, nuclear facilities, underwater, etc.)Performing tasks that are beyond human capabilities of size, weight, speed, endurance, etc.Economy improvement: Automation may improve in economy of enterprises, society or most of humanity.

Designed Components with Detailing By Using CATIAV5R16

BASELink1Link2Link3Assembly

CATIA: Computer Aided Three Dimensional Interactive ApplicationIt was developed by Dassault Systèmes in 1981 and it is located in French.

Definition of Software: Feature based parametric bidirectional associative software.

the main modules in designing are Sketcher (To know about 2d tools only)Part modeling (To create any solid models)Assembly modeling (In this just we insert the components already created in part)Drafting (To generate the views with projections, dimensions, BOM, etc.) Wireframe and surface designing (To create the surfaces only without thickness)Sheet metal (Total design follows the fixed thickness)

ASSEMBLY Location3

ASSEMBLY WITH DETAILING AND BOM

ProcedureAll components designed according to given measurements by using part modeling.Created drawing views with required dimensions in the drafting module.Assembled all the components in the assembly module with required constraints.Opened this assembly in Digital Mockup with DMU Kinematics to apply the mechanism.Converted all assembly constraints into simulation constraints to apply the mechanism.To create a mechanism with a point and a curve, before this we added two points one on curve and other on link3 .Created a mechanism1 with the curve as path and link3 as follower.Applied the simulation to run the link through the given path and selected the required speed in interpolation menu.

ConclusionAccording to usage we can use more no. of links with required mechanisms.The path should not exceed the sum of the lengths of two links(Link1 & Link2).Where the human beings can’t handle the work there we use this kind of machines. In this we used to and fro motion mechanism to drag the components from location3 to location1.The components should be heat and chemical resistant.

Thank you any queries