Vibration analysis for gear backlash on spur gear

Mohd Sulong, Ahmad Firdaus (2018) Vibration analysis for gear backlash on spur gear. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Gear plays important role for power transmitted between two machines and as well as the speed changing by changing the gear ratio whether to use high ratio or low ratio depends on the machine application. The power transmitted cannot be delivered at high efficiency and effectively if there is defect occur at the gear. The purpose of this study is to analyse the vibration of spur gear on normal backlash defect by using frequency analysis. Next, the objective is to observe the outcome of changing the spur gear backlash on the vibration response through the experiment. The method use for spur gear backlash experiment is based on the ANSI/AGMA 2002-C16 which discussed about the tooth thickness and backlash measurement of cylindrical involute gearing. Vibration measured using Vibrometer and the unit scale is acceleration (m/s²). Three variation index of backlash which is 0.003”, 0.004” and 0.005” has been tested. The high vibration recorded is at 0.003’ and 0.005”. The 0.004” shows a low vibration than the others. This shows that the backlash must be in perfect index, not too closes and not too wide in order to create a flow between the teeth gear to avoid the friction from direct contact.

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