Fabrication Processes of Welding Mini-Robot

Research areas:

• Volume 8,Issue 6,May 2020

Year:

2020

Type of Publication:

Article

Keywords:

Fabrication, Processes, Welding, Mini-Robot, Developing Countries

Authors:

Oladebeye Dayo Hephzibah; Adejuyigbe Samuel Babatope; Ayodeji Sesan Peter

Journal:

IJAIM

Volume:

8

Number:

6

Pages:

59-79

Month:

May

ISSN:

2320-5121

Abstract:

A Cartesian type of arc welding mini-robot was fabricated. The robot consists of a rectangular platform, power screw shafts, axes frames, platform stand, stand support, welding machine carriage, slider rails, bearings plates, bearings, stand bracings. The various processes involved in the fabrication of the robot include; Measurement, Marking out, Cutting, Welding, Drilling, Grinding, Threading, Milling, Shaping and Painting. The materials used in the construction of the robot casing are 2 mm thickness galvanized steel plate and angle bar of 50 mm x 50 mm. The material was so selected because of its desirable quality to withstand stresses that may occur in the course of operation. The developed welding robot is governed by a control system using Peripheral Interface Controller (PIC).The PIC16f877 is used as the controlling unit for the project. Ports used for button are configured as input, while ports used for stepper motor control are configured as output. On power up of the device, the motors keep rolling until the unit gets to its default position when their respective reset buttons are depressed. To program for stepper motor, the unipolar full step pattern is employed. This pattern is programmed in the PIC, and following the direction of the arrow determines whether the motor turns clockwise or anti-clockwise. The output of the PIC continuously gives these patterns as long as movement is desired. The assembly of the developed welding robot comprises both the mechanical and electronic components. There have been scanty studies on automation of welding operations in developing countries, especially Nigeria. This phenomenon had brought the need for the development of a mini welding robot with good dexterity to enable automation of welding processes.

Full text: IJAIM_623_FINAL.pdf