A Robotic Cell for Embedding Prefabricated Components in Extrusion-Based Additive Manufacturing

2020 ◽  
Author(s):  
Yeo Jung Yoon ◽  
Oswin G. Almeida ◽  
Aniruddha V. Shembekar ◽  
Satyandra K. Gupta
Keyword(s):  
Additive Manufacturing ◽  
Degrees Of Freedom ◽  
Robotic Manipulators ◽  
The Other ◽  
Robotic Arm ◽  
Robotic Cell ◽  
Material Extrusion ◽  
Surface Polishing ◽  
Pick And Place ◽  
6 Degrees Of Freedom

Abstract By attaching a material extrusion system to a robotic arm, we can deposit materials onto complex surfaces. Robotic manipulators can also maximize the task utility by performing other tasks such as assembly or surface polishing when they are not in use for the AM process. We present a robotic cell for embedding prefabricated components in extrusion-based AM. The robotic cell consists of two 6 degrees of freedom (DOF) robots, an extrusion system, and a gripper. One robot is used for printing a part, and the other robot takes a support role to pick and place the prefabricated component and embed it into the part being printed. After the component is embedded, AM process resumes, and the material is deposited onto the prefabricated components and previously printed layers. We illustrate the capabilities of the system by fabricating three objects.

scholarly journals Method for Robot Manipulator Joint Wear Reduction by Finding the Optimal Robot Placement in a Robotic Cell

2021 ◽  
Vol 11 (12) ◽  
pp. 5398
Author(s):  
Tomáš Kot ◽  
Zdenko Bobovský ◽  
Aleš Vysocký ◽  
Václav Krys ◽  
Jakub Šafařík ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Dynamic Simulation ◽  
Robot Manipulator ◽  
The Other ◽  
Robotic Arm ◽  
Robotic Cell ◽  
Wear Reduction ◽  
Fixed End ◽  
Robot Placement ◽  
Collaborative Robot

We describe a method for robotic cell optimization by changing the placement of the robot manipulator within the cell in applications with a fixed end-point trajectory. The goal is to reduce the overall robot joint wear and to prevent uneven joint wear when one or several joints are stressed more than the other joints. Joint wear is approximated by calculating the integral of the mechanical work of each joint during the whole trajectory, which depends on the joint angular velocity and torque. The method relies on using a dynamic simulation for the evaluation of the torques and velocities in robot joints for individual robot positions. Verification of the method was performed using CoppeliaSim and a laboratory robotic cell with the collaborative robot UR3. The results confirmed that, with proper robot base placement, the overall wear of the joints of a robotic arm could be reduced from 22% to 53% depending on the trajectory.

scholarly journals Implementation of Gesture Control Robotic Arm for Automation of Industrial Application

2020 ◽  
pp. 147-156
Author(s):  
Shriya A. Hande ◽  
Nitin R. Chopde
Keyword(s):  
System Design ◽  
The Other ◽  
Robotic Arm ◽  
Human Hand ◽  
Design And Implementation ◽  
Gesture Control ◽  
Rf Signals ◽  
Pick And Place ◽  
Almost All ◽  
Minimal Effort

<p>In today’s world, in almost all sectors, most of the work is done by robots or robotic arm having different number of degree of freedoms (DOF’s) as per the requirement. This project deals with the Design and Implementation of a “Wireless Gesture Controlled Robotic Arm with Vision”. The system design is divided into 3 parts namely: Accelerometer Part, Robotic Arm and Platform. It is fundamentally an Accelerometer based framework which controls a Robotic Arm remotely utilizing a, little and minimal effort, 3-pivot (DOF's) accelerometer by means of RF signals. The Robotic Arm is mounted over a versatile stage which is likewise controlled remotely by another accelerometer. One accelerometer is mounted/joined on the human hand, catching its conduct (motions and stances) and hence the mechanical arm moves in like manner and the other accelerometer is mounted on any of the leg of the client/administrator, catching its motions and stances and in this way the stage moves as needs be. In a nutshell, the robotic arm and platform is synchronised with the gestures and postures of the hand and leg of the user / operator, respectively. The different motions performed by robotic arm are: PICK and PLACE / DROP, RAISING and LOWERING the objects. Also, the motions performed by the platform are: FORWARD, BACKWARD, RIGHT and LEFT.</p>

A complete analytical solution to the inverse kinematics of the Pioneer 2 robotic arm

Robotica ◽  
2005 ◽  
Vol 23 (1) ◽  
pp. 123-129 ◽  
Author(s):  
John Q. Gan ◽  
Eimei Oyama ◽  
Eric M. Rosales ◽  
Huosheng Hu
Keyword(s):  
Analytical Solution ◽  
Inverse Kinematics ◽  
Degrees Of Freedom ◽  
Robotic Manipulators ◽  
Robotic Arm ◽  
Effective Solution ◽  
Robotic Arms ◽  
Unstructured Environment ◽  
Inverse Kinematics Problem

For robotic manipulators that are redundant or with high degrees of freedom (dof), an analytical solution to the inverse kinematics is very difficult or impossible. Pioneer 2 robotic arm (P2Arm) is a recently developed and widely used 5-dof manipulator. There is no effective solution to its inverse kinematics to date. This paper presents a first complete analytical solution to the inverse kinematics of the P2Arm, which makes it possible to control the arm to any reachable position in an unstructured environment. The strategies developed in this paper could also be useful for solving the inverse kinematics problem of other types of robotic arms.

Modelling and Control of a Translational Robotic Arm

2020 ◽  
Author(s):  
Bin Wei
Keyword(s):  
Computer Simulation ◽  
Degrees Of Freedom ◽  
Control Method ◽  
Process Analysis ◽  
Robotic Arm ◽  
Control Analysis ◽  
Pick And Place ◽  
Final Design ◽  
Car Wash ◽  
End Effectors

Abstract The objective of this paper is to design and model a translational robotic arm that is simple and cheap to manufacture while maintaining good functionality. Once the robotic arm is designed, the control analysis and computer simulation are conducted. When selecting the material used for the parts, the density and strength of are considered. This paper covers the design process, analysis and computer simulation of a robotic arm. The final design is a 4-DOF (degrees of freedom) pick and place robot. This robot has 1 prismatic joint and 3 revolute joints. The arm is designed to be used in multiple applications such as pick and place, car wash, chalkboard erasers, etc. Forward kinematics is used to calculate the end effectors position and orientation based on the positions of each joint. The Lagrange general method is used to come up with the equation of motion. Also, the control method selected for this robot was nonlinear decoupling PD control.

scholarly journals Gesture based wireless control for a robotic manipulator

2018 ◽  
Vol 7 (2.31) ◽  
pp. 231
Author(s):  
Arockia Vijay Joseph ◽  
Akshat Mathur ◽  
Jatin Verma ◽  
Ankita Singh
Keyword(s):  
Image Processing ◽  
Motion Tracking ◽  
Robotic Manipulators ◽  
Robotic Manipulator ◽  
Robotic Arm ◽  
Human Hand ◽  
The Past ◽  
Wireless Control ◽  
Pick And Place

This project plays a very important role to complement the industrial and automation field. Nowadays, robots are used in several fields of engineering and manufacturing and the systems for controlling or actuating them have also enhanced from the past. The use of gestures for controlling them has been the new trend to control the movement of robotic manipulators. The various methodologies for controlling them are motion tracking, image processing and by using Kinect sensors. All these methods can be used as a teach pendant where one can provide the movement of the manipulator as a preset and the manipulator can carry out the same motion repetitively, or in the case of motion tracking and while using Kinect sensors, the user is bound to a confined area where the cameras can monitor the user’s body. Here, we propose a wireless controlled robotic arm system for tool handling (pick and place) and many other applications where human reach is elusive. The result is that the gestures of the human hand are in sync with the manipulator’s movement. Further, this robotic arm has been implanted beneath a drone which would then have the ability to reach certain heights where human reach is impervious or might put a human’s life in jeopardy. In this case, the user can maneuver along with manipulator wherever it is used.  

scholarly journals Low-cost pick and place anthropomorphic robotic arm for the disabled and humanoid applications

2020 ◽  
Vol 1 (2) ◽  
pp. 35-42
Author(s):  
Norsinnira Zainul Azlan ◽  
Mubeenah Titilola Sanni ◽  
Ifrah Shahdad
Keyword(s):  
Degrees Of Freedom ◽  
Low Cost ◽  
Robotic Arm ◽  
Robotic Arms ◽  
Kinematic Study ◽  
Human Arm ◽  
Pick And Place ◽  
The Disabled ◽  
Command Input ◽  
The Voice

This paper presents the design and development of a new low-cost pick and place anthropomorphic robotic arm for the disabled and humanoid applications. Anthropomorphic robotic arms are weapons similar in scale, appearance, and functionality to humans, and functionality. The developed robotic arm was simple, lightweight, and has four degrees of freedom (DOF) at the hand, shoulder, and elbow joints. The measurement of the link was made close to the length of the human arm. The anthropomorphic robotic arm was actuated by four DC servo motors and controlled using an Arduino UNO microcontroller board. The voice recognition unit drove the command input for the targeted object. The forward and inverse kinematics of the proposed new robotic arm has been analysed and used to program the low cost anthropomorphic robotic arm prototype to reach the desired position in the pick and place operation. This paper’s contribution is in developing the low cost, light, and straightforward weight anthropomorphic arm that can be easily attached to other applications such as a wheelchair and the kinematic study of the specific robot. The low-cost robotic arm’s capability has been tested, and the experimental results show that it can perform basic pick place tasks for the disabled and humanoid applications.

Design of a Tension Based Haptic Interface: Spidar-G

2000 ◽  
Author(s):  
Seahak Kim ◽  
Masahiro Ishii ◽  
Yasuharu Koike ◽  
Makoto Sato
Keyword(s):  
Degrees Of Freedom ◽  
Haptic Device ◽  
Haptic Interface ◽  
Pick And Place ◽  
Place Task ◽  
6 Degrees Of Freedom

Abstract In this paper, we explain a haptic device which can input translation and orientation measuring the length of strings and display reflect force with 6 degrees of freedom (DOF) by using the tension of strings. We propose 2 methods to calculate translation and orientation and to display reflect force. Finally, we refer the characteristic of this device and its validity through the Pick-and-Place task.

scholarly journals Design of Mechanism for Reducing Support Structures in Material Extrusion Additive Manufacturing

2020 ◽  
Vol 15 ◽  
Keyword(s):  
Mathematical Model ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Robotic Arm ◽  
Support Structures ◽  
End Effector ◽  
Material Extrusion ◽  
3D Printers ◽  
Ultimate Objective ◽  
Printing Time

Material extrusion additive manufacturing is widely used in constructing 3D parts. Traditional 3D printers create support structures to build some portions of a model with overhangs that are not supported from below. The purpose of this paper is to introduce a mechanism that can reduce the use of support structures required during 3D printing. The robotic arm is made up of links that are connected with both prismatic and rotary joints. The end-effector of this manipulator resembles temporal support. It is used while building some portions of a model instead of printing support structures. To serve this goal, a mathematical model for the robotic arm based on Chasles-Mozzi theorem is introduced to avoid the limitations of Denavit-Hartenbrg convention. Finally, this paper will present the operation flowchart to be implemented in 3D printers’ software. In other words, predefined usage of the mechanism will help to estimate the amount of the material needed for printing the desired object. The ultimate objective behind employing a robotic arm in material extrusion additive manufacturing is to have a printer that produces clean prototypes, consume less material and reduce printing time

scholarly journals Design and implement of robotic arm and control of moving via IoT with Arduino ESP32

2021 ◽  
Vol 11 (5) ◽  
pp. 3924
Author(s):  
Anwer Sabah Ahmed ◽  
Heyam A. Marzog ◽  
Laith Ali Abdul-Rahaim
Keyword(s):  
The Other ◽  
Robotic Arm ◽  
The Internet ◽  
Robot Arm ◽  
Web Page ◽  
Pick And Place ◽  
Arduino Microcontroller ◽  
And Control ◽  
Network Router ◽  
The Web

Every day, the technologies are expanding and developed with extra things to them. A cloud computing (CC) and Internet of things (IoT) became deeply associated with technologies of the internet of future with one supply the other a way helping it for the successful. Arduino microcontroller is used to design robotic arm to pick and place the objects by the web page commands that can be used in many industrials. It can pick and place an object from source to destination and drive the screws in into its position safely. The robot arm is controlled using web page designed by (html) language which contain the dashboard that give the commands to move the servos in the desired angle to get the aimed direction accordingly. At the receiver end there are four servo motors which are made to be interfaced with the micro controller (Arduino) which is connected to the wireless network router. One of these is for the arm horizontally movement and two for arm knee, while the fourth is for catch tings or tight movement. Two ultra-sonic sensors are used for limiting the operation area of the robotic arm. Finally, Proteus program is used for the simulation the controlling of robot before the hardware installation

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