Wear behaviour of acetal gear pairs

A study of the tribological behaviour of polyamide 66 with varying injection-moulding parameters

“…The disadvantage of these tests is that the pin or the disc is usually made from metal. However, polymer gears running against polymers are more likely to be used and are generally cheaper than using polymer against metal [21]. Also, the geometry of the pin-on-disc test is conformal, which is different from the non-conformal contact between gears.…”

An investigation of misalignment effects on the performance of acetal gears

“…With regard to the disproportional relationship of linear wear rate and axial gap, one possible reason is the test measurement and data calculation error; one might be due to a disproportionally accumulative gear bulk and flash temperature during the long term operation, another maybe an increase in surface roughness owing to the trapped debris and consequently it further affects the wear as stated in [14][15][16]. Fig.4 (b) demonstrates that AM leads to edge loading, resulting in a contact area reduction, subsequently contact pressure increase.…”

“…The wear debris morphology of polymer gears is associated with wear mechanism and operating condition such as rubbing, scratching, CS, local contact temperature and mesh misalignment. Varieties in morphology of polymer wear debris and their effects have not received enough attention [14][15][16].…”

“…Great efforts have been made to investigate and understand the wear mechanisms of polymer and polymer composite gears in the past 40 years such as design standard [1][2][3][4][5], sources of heat generation [6], varying temperature effect [7][8][9][10][11][12] and effect of sliding-rolling contact [13][14][15][16][17][18][19] and so on.…”

A review on failure characteristics of polymer gear

“…Scanning electron micrograph (SEM) was used by A. R. Breeds et al [16] in order to study the surface condition. Three major interest region were dedendum, addendum, and pitch line.…”