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Project no.2
Automated Work Cell

Project Manager: Machine Fabrication & Electrical Circuit Wiring

Role: fabricated mechanical components and involved in electrical circuit design

The robot is responsible for picking the part from the pick location set by the end of the magazine. There are three degrees of freedom on the robot; two perpendicular axes are actuated by pneumatic cylinders, and a rotary axis actuated by a brushless motor.

A DC brushless motor is the main source of power for the rotation, and drives an oscillating mechanism. The motor is capable of operating in two directions but this project requires the motor to run in only one direction, using a mechanism to convert the rotational direction into an oscillating pattern. Proximity sensors areused to detect when the robot is at the end of the forward/reverse strokes where the motor is de-energized.

The two perpendicular axes are actuated with pneumatic cylinders and should be designed to allow the robot to extend and retract to pick up the part and rotate without colliding with any other components on the work cell.

As part of the requirements of the project, the following criteria for the project was met:

  • Gravity fed hopper capable of accepting at least ten parts

  • Magazine for indexing parts

  • Pick and Place robot with 3 degrees of freedom (2 perpendicular linear axes, and one rotary axis)

  • Simulated pressing process using two pneumatic cylinders

  • Part High and Low sensors

  • Part Present Sensor

  • Operator Control Panel with appropriate lights and push buttons

  • Programmed PLC with subroutines for step mode and auto mode for the entire process

  • Safety Circuit consisting of safety relays, force guided relays, an emergency stop, a light curtain, and an air regulator solenoid

  • Space limitations from provided 24”x30” base plate.

  • Obstacle avoidance while performing pick and place

Mechanical aspect of the project:

  • Design the hopper and magazine using manufactured parts and purchased parts

  • Design the robot with respect to the number of axes required and the required oscillation

  • Design the simulated pressing actions

  • Produce a set of drawings including the full 3D model for the design presentation. Prior to manufacturing the project, approval must be obtained from the course instructors during the design presentation

  • Selection of all necessary sensors and electrical components

  • Machine all necessary components

  • Fully assemble the mechanical components on the project

  • Demonstrate a functioning robot, gripper, hopper, and magazine

Electrical & Programming aspect of the project:

  • Control Panel Presentation. Prior to wiring, the electrical drawings and plans for the operator panel must be approved in the electrical presentation

  • Wiring the cell

    • Sensors

    • Actuators

    • Panel

    • PLC

    • Safety Circuit

    • Simulated press indexing and pressing cylinders

  • Program the PLC

  • Program the HMI

Automated Work Cell

Automated Work Cell

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Automated Work Cell #1

Automated Work Cell #1

Automated Work Cell #2

Automated Work Cell #2

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