Scholarlink

<p>The use of polymer gears has dramatically increased in various industrial applications which include automotives, printers, watches, toys, electronic appliances and some medical equipment. Polymer gears pose many advantages over metal gears such as silence in operations, less cost, damping of moderate shocks and impacts, and can operate during no lubrication conditions. But these gears are limited to low power transmission applications with small gear-modules and other gear parameters. To address this issue an exhaustive review of failure modes of polymer gears was performed. This review delivers an encompassing assessment of gear-tooth modification technique intended for ameliorating the permanence and efficiency of polymer gears. Asymmetric tooth design, profile correction, drilled cooling holes, and reinforcement strategies are critically examined. Failure characteristics such as wear, bending fatigue, have been illustrated and described in detail. Investigations to improve service life of polymer gears by modifying gear tooth and its profile has also been discussed along with their effects. Previous studies have reported improvements in load-carrying capacity ranging from approximately 20–40% through tooth profile modifications such as tip relief and crowning. However, these gains are strongly dependent on baseline gear geometry (unmodified involute), polymer material system, and operating conditions. For instance, higher improvements are typically observed in unreinforced polyamide gears operating below their glass transition temperature under moderate loads, where bending fatigue governs failure. In contrast, for wear-dominated polymers such as POM or at elevated operating temperatures approaching Tg, the effectiveness of tooth modifications is significantly reduced. The goal of this collected review study is to help researchers choose the right material for plastic gears and investigate different characteristics and aspects that impact plastic gear performance and failure behaviour.</p> Graphic abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancing polymer gear life: a comprehensive review on tooth modification approaches

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月3日

查看全文
  • Sandeep C. Dhaduti,
  • Shridhar H. Budapanahalli,
  • Raman Kumar,
  • Vinod Kumar Meti,
  • Y. P. Deepthi,
  • Arun Y. Patil,
  • Dhirendra Nath Thatoi,
  • A. Karthikeyan

摘要

The use of polymer gears has dramatically increased in various industrial applications which include automotives, printers, watches, toys, electronic appliances and some medical equipment. Polymer gears pose many advantages over metal gears such as silence in operations, less cost, damping of moderate shocks and impacts, and can operate during no lubrication conditions. But these gears are limited to low power transmission applications with small gear-modules and other gear parameters. To address this issue an exhaustive review of failure modes of polymer gears was performed. This review delivers an encompassing assessment of gear-tooth modification technique intended for ameliorating the permanence and efficiency of polymer gears. Asymmetric tooth design, profile correction, drilled cooling holes, and reinforcement strategies are critically examined. Failure characteristics such as wear, bending fatigue, have been illustrated and described in detail. Investigations to improve service life of polymer gears by modifying gear tooth and its profile has also been discussed along with their effects. Previous studies have reported improvements in load-carrying capacity ranging from approximately 20–40% through tooth profile modifications such as tip relief and crowning. However, these gains are strongly dependent on baseline gear geometry (unmodified involute), polymer material system, and operating conditions. For instance, higher improvements are typically observed in unreinforced polyamide gears operating below their glass transition temperature under moderate loads, where bending fatigue governs failure. In contrast, for wear-dominated polymers such as POM or at elevated operating temperatures approaching Tg, the effectiveness of tooth modifications is significantly reduced. The goal of this collected review study is to help researchers choose the right material for plastic gears and investigate different characteristics and aspects that impact plastic gear performance and failure behaviour.

Graphic abstract