Patent ID: 8991282
Filing Date: 2015-03-31
Classification: F16H,Y10T

Abstract:
1. A wave gear unit with input bearings comprising: an input shaft; a first unit end plate for rotatably supporting a first shaft end of the input shaft via a first input bearing; a second unit end plate for rotatably supporting a second shaft end of the input shaft via a second input bearing; a wave gear mechanism having a wave generator which rotates integrally with the input shaft, a flexible externally toothed gear made to flex into a non-circular shape by the wave generator, and a rigid internally toothed gear partially meshed with the flexible externally toothed gear, the wave gear mechanism being disposed between the first and second unit end plates; the first unit end plate being a first composite member which has a first unit end plate main body member and an annular first bearing housing member for supporting the first input bearing, the first bearing housing member being integrated with the first unit end plate main body member; the second unit end plate being a second composite member which has a second unit end plate main body member and an annular second bearing housing member for supporting the second input bearing, the second bearing housing member being integrated with the second unit end plate main body member; the first bearing housing member and the second bearing housing member being formed from an iron-based material; and the first unit end plate main body member and the second unit end plate main body member being formed from a lightweight material that is lighter than the iron-based material.