• Brijeshwar V. Wagh
• Prof. G. E. Chavan
• Prof. N. L. Bhirud
• Prof. D. R. Satpute

Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the work-pieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. In industry, there are different geometrical shapes to which an operator has to weld. Each and every shape carries its own operational constraints. Circular welding is one of the most critical welding process carried out manually, especially when accuracy and uniformity is of high concern. A manual mode of circular welding carries so many disadvantages like lower accuracy and precision, high wire, gas and electricity wastage and frequent micro cracks. This gives rise to need of automation for circular welding. The bulkiness and complexity of circular welding due to the presence of different holding arrangements and fixtures makes it expensive and highly time consuming process. On the other hand, due to the complexity of the process, availability of skilled worker is difficult. Moreover, due to monotonous and high concentration job schedule, worker fatigue becomes high and hence it forces the tendency of worker to have high wages. To avoid these undesirable circumstances, the application demands import of automation for this circular welding process. Welding automation world-wide utilizes different pneumatic and hydro pneumatic instrumentation. This paper aims to design double end drive (DED) machine for automation of welding process in exhaust system. Exhaust system consist assembly of bend pipe, flexible bellow and straight pipe (catcon). These bend pipe and straight pipe are weld with flexible bellow in middle. it has two circular locations on two faces of both pipe. These two points are located at two different locations in horizontal plane. To weld the pipe and bellow onto their respective locations, we have to design a SPM which must carry an automate drive for uniform and precise welding. This paper also illustrates role of automation, Automation is much helpful in cost saving and to increase the productivity of the system.

Design, SPM, Circular welding, Automation.

"Design and Manufacturing of Double End Drive (DED) Machine for Automation of Welding Process for Flexible Bellow in exhaust system.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.104-111, May-2019, Available :http://www.jetir.org/papers/JETIR1905D14.pdf

"Design and Manufacturing of Double End Drive (DED) Machine for Automation of Welding Process for Flexible Bellow in exhaust system.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp104-111, May-2019, Available at : http://www.jetir.org/papers/JETIR1905D14.pdf