110 浸炭焼入れ薄肉非対称ウェブ構造歯車の残留応力に及ぼす浸炭部の影響

Abstract

This paper presents a study on effects of carburized parts on residual stresses of case-hardened thin-rimmed spur gears with asymmetric web arrangements. A heat conduction analysis and an elastic-plastic stress analysis during the case-hardening process of thin-rimmed spur gears with asymmetric web arrangements were carried out of various case-hardening conditions by the three-dimensional finite-element method (3D-FEM), and then residual stresses were obtained. The effects of the case depth, the carburized parts (tooth surface, gear-side, rim, web surface), the web structure, the rim thickness on the residual stress were determined.