Effect of Mating Metal Gear Surface Texture on the Polymer Gear Surface Temperature

Siddhartha

Proceedings of the Institution of Mechanical Engineers, Part J:

2017

The significance of polymer gears to transmit power and motion is increasing continuously due to their inherent characteristics. Polymer gears have established themselves as attractive alternatives to traditional metal gears in plethora applications. They are light in weight, have lower inertia, and run noiseless than their metal counterparts. This article presents a comprehensive review of the research on polymer spur gears operating under low (0–8 Nm) and moderate (>8 and ≤17 Nm) loading conditions. Different polymers and polymer composites used till date for the fabrication of such gears are included along with different operating conditions. Various design features of polymer gears and tooth modification techniques for the improvement of the performance and durability of these gears have also been included in this review. The aspects of the modeling and simulation studies of the polymer gears are also emphasized in this paper for completeness of the review. The concept of hybrid gears is discussed along with their tribological properties. Various methods of manufacturing of polymer gears and their failure modes are discussed so as to make the article useful for researchers.

Section: Performance Parameters Of Polymer and Polymer Composite Gearsmentioning

confidence: 99%

Polymer spur gears behaviors under different loading conditions: A review

Siddhartha

Proceedings of the Institution of Mechanical Engineers, Part J:

2017

“…The effect of different surface roughness was studied by J. Mertens and S. Sentilvelan [24] where three different value of coefficient of friction studied. Three stainless steel gear with coefficient of friction 3.8-4.1µm, 2.5-2.8µm and 1.9-2.2 µm was mated with polypropylene gear.…”

Section: Firstmentioning

confidence: 99%

A review on failure characteristics of polymer gear

et al. 2016

Abstract.Polymer are now widely used as substitute material for steel gear in low load devices. Its failure differs from gears made of steel, thus it is important to categorize the failures shown by polymer gears. Several previous studies noted that wear detection, microstructure surface condition monitoring, weight loss and temperature detection can be used in detecting failure of polymer gear. This article reviews the failure detection method mentioned above. Other researcher works were studied and their findings were extracted in order to identify the methods they used. The most common method used was wear detection and it was supplemented by other methods such as microstructure surface condition monitoring. Failures shown by polymer can be concluded to be tooth breakage, tooth deformation, material removal and surface fatigue.

“…Many monographs are related to the dynamic characteristics of the GTS [23][24][25][26]. The TMS excitation injects a time-varying meshing parameters into the GTS dynamic analysis equation as a key indicator, which are of great concern; it has constituted the intrinsic properties of the dynamics of MGPs, which, in turn, forms the characteristics and inherent properties of the GTS dynamics [27][28][29]. The numerical analytical methods for solving the TMS of MGPs are divided into two categories: the finite element method (FEM) [30] and the analytical method following the principle of potential energy [31].…”

Section: Introductionmentioning

confidence: 99%

Research on Meshing Gears CIMT Design and Anti-Thermoelastic Scuffing Load-Bearing Characteristics

et al. 2022

In the process of gear meshing, it is an inevitable trend to encounter failure cases such as contact friction thermal behavior and interface thermoelastic scuffing wear. As one of the cores influencing factors, the gear meshing contact interface micro-texture (CIMT) significantly restricts the gear transmission system (GTS) dynamic characteristics. This subject suggests the contact characteristic model and interface friction dynamics coupling model of meshing gear pair with different CIMT. Considering the influence of gear meshing CIMT on distribution type of hydrodynamic lubricating oil film, contact viscous damping and frictional thermal load, the aforementioned models have involved transient meshing stiffness (TMS) and static transmission accumulated error (STAE). Based on the proposed models, an example verification of meshed gear pair (MGP) is analyzed to reveal the influence of CIMT on the dynamic characteristics of GTS under a variety of micro-texture configurations and input branch power and rated speed/shaft torque conditions. Numerical simulation results indicate that the influence of CIMT on gear dynamic response is extremely restricted by the transient contact regularity of the meshing gear surface. Meshing gears’ dynamic characteristics (especially vibration and noise) can be obviously and effectively adjusted by setting a regular MGP with CIMT instead of random gear surfaces.