| 摘要 |
An improved parts orbiter for use in a chem-milling vat. The orbiter has a major frame assembly that is self standing which is lowered into the chem-milling vat. A minor frame assembly is positioned within the major frame assembly and it is pivotally mounted thereto about a horizontal axis. A first motor is connected to a drive sprocket gear, a chain, and a driven sprocket gear for rotating the minor frame assembly about the horizontal axis. A planetary gear is mounted on a shaft extending upwardly from the bottom cross member of the minor frame assembly. Its teeth are in meshing engagement with a sun gear that is mounted on a shaft whose one end passes through one of the horizontal side members of the minor frame assembly and has its end also passing through one of the upright side members of the major frame assembly. A second drive motor is connected through a drive sprocket gear, a chain, and a driven gear which itself is also mounted on the same shaft that the sun gear is mounted on. The second motor allows the planetary gear to be rotated around a vertical axis at the same time that the minor frame assembly is rotating around its horizontal axis.
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