Design and fabrication of power transmission system through elbow mechanism

Most of the machines transmit power from the input to the output with the help of gears, but the efficiency of power transmission by gears is less due to friction losses. The major problem is that the transmission having gears cause the jamming due to the backlash error and produces more noise compared to other drives due to pitch mismatch. From the design point of view, there is a 10% energy loss per engagement for gears [1], [6]. Also, the construction of gears is complex and, thus, costlier. The gearless elbow transmission is a very efficient mechanism and has shown efficiency up to 92%. This paper gives information about the strength, speed, and torque transmissibility of elbow mechanism as these are very important terms in defining applications of the mechanism in replacement of gears. The transmission of power with minimum losses is the main criteria for calculating the efficiency of the machine. This system demonstrates efficient gearless transmission of power at any required angle and saves gear manufacturing time and costs along with teeth matching and gear placement issues. The elbow mechanism is an efficient design of gearless transmission technique and the kinematic system that allows for efficient power or motion transmission at any required angle. This mechanism allows for motion transmission at 90 degree angle between the driver and driven shafts.