| 摘要 |
A canopy cutting device, for machining canopies and the like in constricted spaces, including a housing having a base plate, a bearing mounted on the housing, a support for retaining the axis of the bearing in a desired position, a ring gear carriage mounted on the bearing for rotation about the bearing, a cutting tool mounted on the carriage, a pinion gear mounted for rotation on the housing and engageable with the ring gear, a drive shaft connected to the pinion gear, and a feed device for advancing the cutting tool along the axis during rotation of the ring gear thereby permitting removal of a canopy or the like.
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