Design, Fabrication and Analysis of Fault Diagnosis in Spur Gear

Abstract

Abstract: Gear roll tester is used to measure and analyse accuracy and errors in spur gears. Gear testing is a technique that has been used in the gear industry to identify possible manufacturing defects in the design of the gear. It is a practical, fast, and effective screening tool that can identify when the gear manufacturing process has deviated from an targeted condition. Therefore, in the present paper it was decided to develop a gear roll tester to analyse effects of different types of defects in gear on its functional performance like run out, misalignments, profile errors, noise, vibration ,pitch errors and backlash,etc. This Gear tester is used to test the error in the gear. This Experimental setup Consisting of two spindles mounted on two carriages. One spindle mounted on fixed carriage and other on sliding carriage. one master gear is fixed in one spindle and another testing gear (faulty gear) is fixed in the second spindle. They can slide both side and these gears are mounted in mesh with each other by spring pressure. When the meshed gears are rotated, the moment of sliding carriage can be measured by the digital dial indicator. These values of variation are deflected by the dial indicator. The spindles can be adjusted so that axial distance is equal and scale is attached to one side. If errors occur in the tooth form moment of carriage due to the error in the pitch and tooth thickness. This moment is indicated in the dial gauge. And the vibration of this faulty gears can be shown by graphical representation using wax paper