Robots at Work

A Presentation by: Caspar Broelemann, Robin Weberskirch, Sebastian Pick

Content:  Defination  Types of robots  Robot components  Robot arm design  Robot work envelope  Control measures  Safety in Robotics  Types of accidents  Sources of harzads  Laser scanner  Safety light curtains  Safety mat system  Safety of Human-Robot Collaboration Systems Project

Defination  An industrial robot is defined as an automatically controlled, reprogrammable, multipurpose manipulator programmable in three or more axes. The field of robotics may be more practically defined as the study, design and use of robot systems for manufacturing.  Typical applications of robots include welding, painting, assembly, pick and place, product inspection, and testing; all accomplished with high endurance, speed, and precision.

Types of robots Servo controlled robots:  Sensor controlled;  Axes continously monitored;  Feed back is stored in memory; Non servo controlled robots:  Non feedback capability  Axes control through stops and limit switches

Robots components  Mechanical Unit  Power source  Controling unit  Tooling

Robot arm design

Robot work envelope

Control measures  Pre- installation control measures  Installation control measures  Post installation measures

Safety in Robotics  Safety in Robotics has gained critical importance due to: Ingreased use of robots for industrial use; Sophisticated programme Controls; Increased usage in harzadous operations;

Isaac Asimov: 1 st law of Robotics- A robot may not injure a human being

Types of accidents  Impact or collision accidents  Crushing and trapping accidents  Mechanical Part accidents  Other accidents

Sources of harzads  Human Errors  Control Errors  Unhautorhized acces  Mechanical Failures  Enviromental Sources  Power systems  Improper Installation

Laser scanner  Laser scanner can be used for horizontal and vertical safeguarding of hazardous points-of operation, dangerous areas.  Features and Specification Protection field range - 5.5m Minimum response time - 60ms Angle range - 190° Operating environment temperature - –10 °C …+50 °C Protection fields - 4 Warning fields - 4 Monitoring cases - 4

Safety light curtains  Used to control a side or perimeter delimiting a dangerous point or zone, safety light curtains are used to stop the machinery every time the operator goes beyond the allowed area. Safety Light Curtains detect the presence of the operator through the interruption of the infrared beams between a transmitter and receiver unit and in conjunction with a safety relay.

SAFETY MAT SYSTEM  Placed around a hazardous machine or zone, safety mats keep control of the whole area. The machinery will be stopped at any time the operator steps on the mat.

Safety of Human-Robot Collaboration Systems Project  Safe human-robot collaboration is widely seen as key to the future of robotics. When humans and robots can work together in the same space, a whole class of tasks becomes amenable to automation.  Objective: To develop and deploy the measurement science needed by industry and robot safety standards organizations to enable safety and effectiveness of human robot collaborative activities by  New technical idea: These robots will use advanced sensors to detect human positions and adjust their speed based on the separation distance between the human and the robot.

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 Thank you very much for your attention!  Any questions?