Abstract:A new method was developed to decrease the amount of thermal damage on the contact surface of a plastic gear tooth. The main aim of this method is to decrease the amount of thermal damage on the tooth surface by reducing the heat accumulated in the tooth under working conditions. For this reason, air-cooling holes on the plastic gear tooth were drilled in different locations, with the intention of lowering the tooth temperature by transferring the heat away from the tooth through these holes via convection. Us… Show more
“…Gears with the second configuration underwent very less damage in comparison to the other configurations operating under the same conditions. 52 In another study, it was found that there was a significant reduction in the gear tooth temperature when the hole was drilled in the vicinity of the pitch diameter and a direction perpendicular to the tooth axis. 51 Figure 8.Solid model of: (a) first type of configuration; (b) second type of configuration (Source: Duzcukoglu et al.…”
Section: Modification Techniques Employed To the Tooth Of Polymer Gearsmentioning
confidence: 97%
“…51 Figure 8.Solid model of: (a) first type of configuration; (b) second type of configuration (Source: Duzcukoglu et al. 52 ).…”
Section: Modification Techniques Employed To the Tooth Of Polymer Gearsmentioning
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.
“…Gears with the second configuration underwent very less damage in comparison to the other configurations operating under the same conditions. 52 In another study, it was found that there was a significant reduction in the gear tooth temperature when the hole was drilled in the vicinity of the pitch diameter and a direction perpendicular to the tooth axis. 51 Figure 8.Solid model of: (a) first type of configuration; (b) second type of configuration (Source: Duzcukoglu et al.…”
Section: Modification Techniques Employed To the Tooth Of Polymer Gearsmentioning
confidence: 97%
“…51 Figure 8.Solid model of: (a) first type of configuration; (b) second type of configuration (Source: Duzcukoglu et al. 52 ).…”
Section: Modification Techniques Employed To the Tooth Of Polymer Gearsmentioning
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.
“…The surface of loading tooth was inspected by H. Duzcukoglu et al [17] to determine the presence of transverse crack. It was found that the transverse cracked occurred due to thermal softening caused by accumulated heat.…”
“…The improved heat dissipation ability increased the gears life considerably. The introduction of cooling holes was reported by H. Duzcukoglu [17] in order to decrease thermal damage. Three design of gears were studied, first is unmodified, the second gear had a hole drilled at the pitch point of the gear tooth and the third design have holes at the pitch point and on the body of the tooth as seen in Fig.…”
Section: Thermal Damage and Temperature Detection Using Thermal Camermentioning
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.
“…Test results indicated a decrease in tooth surface temperature that led to a reduced wear rate. Düzcükoğlu coworkers improved the load‐carrying capacity of plastic gear by drilling air‐cooling holes on the tooth of the gear. The use of cooling holes decreases the amount of thermal damage to plastic gear tooth.…”
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