08FTM06-2008

Tooth Fillet Profile Optimization for Gears with Symmetric and Asymmetric Teeth

08FTM06-2008 发布历史

Involute flanks are nominally well described and classified by different standard accuracy grades@ depending on gear application and defining their tolerance limits for such parameters as runout@ profile@ lead@ pitch variation@ and others. The gear tooth fillet is an area of maximum bending stress concentration. However@ its profile is typically marginally described as a cutting tool tip trajectory. Its accuracy is defined by a usually generous root diameter tolerance. The most common way to reduce bending stress concentration is application of the basic (or generating) rack with full radius. This paper presents a fillet profile optimization technique based on the FEA and random search method@ which allows for a substantial bending stress reduction@ by 15 to 30% compared to traditionally designed gears. This reduction results in higher load capacity@ longer lifetime@ and lower cost. It includes numerical examples confirming the benefits of fillet optimization.

08FTM06-2008由AGMA - American Gear Manufacturers Association 发布于 2008-10-01，并于 2009-08-05 实施。

08FTM06-2008的历代版本如下：

• 2008年10月01日 08FTM06-2008

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标准号

08FTM06-2008

发布日期

2008年10月01日

实施日期

2009年08月05日

废止日期

无

中国标准分类号

/

国际标准分类号

/

发布单位

AGMA - American Gear Manufacturers Association

引用标准

11

适用范围

Involute flanks are nominally well described and classified by different standard accuracy grades@ depending on gear application and defining their tolerance limits for such parameters as runout@ profile@ lead@ pitch variation@ and others. The gear tooth fillet is an area of maximum bending stress concentration. However@ its profile is typically marginally described as a cutting tool tip trajectory. Its accuracy is defined by a usually generous root diameter tolerance. The most common way to reduce bending stress concentration is application of the basic (or generating) rack with full radius. This paper presents a fillet profile optimization technique based on the FEA and random search method@ which allows for a substantial bending stress reduction@ by 15 to 30% compared to traditionally designed gears. This reduction results in higher load capacity@ longer lifetime@ and lower cost. It includes numerical examples confirming the benefits of fillet optimization.