Computer Aided Design of a Low-Cost Painting Robot

  • Syeda Maria Khatoon Shaheed Zulfiqar Ali Bhutto Institute of Science & Technology, Karachi.
  • Faraz Junejo Shaheed Zulfiqar Ali Bhutto Institute of Science and Technology, Karachi
  • Syed Bilal Mujtaba Shaheed Zulfiqar Ali Bhutto Institute of Science and Technology, Karachi


The application of robots or robotic systems for painting parts is becoming increasingly conventional; to improve reliability, productivity, consistency and to decrease waste. However, in Pakistan only highend Industries are able to afford the luxury of a robotic system for various purposes. In this study we propose an economical Painting Robot that a small-scale industry can install in their plant with ease. The importance of this robot is that being cost effective, it can easily be replaced in small manufacturing industries and therefore, eliminate health problems occurring to the individual in charge of painting parts on an everyday basis. To achieve this aim, the robot is made with local parts with only few exceptions, to cut costs; and the programming language is kept at a mediocre level. Image processing is used to establish object recognition and it can be programmed to paint various simple geometries. The robot is placed on a conveyer belt to maximize productivity. A four DoF (Degree of Freedom) arm increases the working envelope and accessibility of painting different shaped parts with ease. This
robot is capable of painting up, front, back, left and right sides of the part with a single colour. Initially CAD (Computer Aided Design) models of the robot were developed which were analyzed, modified and improved to withstand loading condition and perform its task efficiently. After design selection, appropriate motors and materials were selected and the robot was developed. Throughout the development phase, minor problems and errors were fixed accordingly as they arose. Lastly the robot was integrated with the computer and image processing for autonomous control. The final results demonstrated that the robot is economical and reduces paint wastage.

Oct 1, 2017
How to Cite
KHATOON, Syeda Maria; JUNEJO, Faraz; MUJTABA, Syed Bilal. Computer Aided Design of a Low-Cost Painting Robot. Mehran University Research Journal of Engineering and Technology, [S.l.], v. 36, n. 4, p. 16, oct. 2017. ISSN 2413-7219. Available at: <>. Date accessed: 13 dec. 2019. doi:
This is an open Access Article published by Mehran University of Engineering and Technolgy, Jamshoro under CCBY 4.0 International License