| 摘要 |
The key seat slotter has a shank on which a pulley is adapted to be clamped. A broaching blade is slidable in a groove on the shank through the bore of the pulley. The key seat is cut in the pulley bore by manually pivoting a handle to effect repeated strokes of the broaching blade. The depth of the cut is progressively increased to the desired depth of the slot between successive strokes of the blade by incremental advancement of a tapered feed bar in the groove on the shank on which the broaching blade is slidably mounted.
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