| 摘要 |
PROBLEM TO BE SOLVED: To lower the cost while facilitating the working by forming outer diameter of an epicyclic gear shaft equal over the whole thereof after assembling a spindle part and a sleeve part in the gear shaft. SOLUTION: An epicyclic gear shaft 1 is formed into the double structure of a spindle part 2 and a sleeve part 4 to be pressed into the peripheral part of a bonding part of the gear shaft 1 and the spindle part 2, and outline of the spindle part 2 at the base end side thereof is formed equal to the outer diameter of the sleeve part 4. After assembling the spindle part 2 and the sleeve part 4, the outer diameter of the epicyclic gear shaft 1 is formed into the same surface. The outer diameter of the spindle part 2 and the sleeve part 4 can be worked at the same time after assembling the spindle part 2 and the sleeve part 4. Consequently, in comparison with a conventional device with step, working of the outer diameter for concentrical accuracy of the spindle part 2 and the sleeve part 4 is facilitated, and the working cost can be lowered.
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