| 摘要 |
The invention provides a chasing tool for repairing damaged internal threads, including a body provided with a bore; a handle retained in the bore with one degree of freedom in rotation, the handle being provided over at least part of its length with an internal thread; a cylindrical component having an external thread matching the internal thread of the handle; a tubular member fixedly attached to the body perpendicular to the axis of rotation of the handle and opening into the bore of the body and a lever tiltable about a pivot providing the lever with one degree of freedom in rotation, the cylindrical component being articulated to the lever and a cutter articulated to the other end of the lever, the cutter projecting from the tubular member. In another embodiment, there is provided a chasing tool for repairing damaged internal threads, including a bar; a first arm fixedly attachable to the bar and extending perpendicular to the bar; a second arm, co-planar with the first arm and slidable along the bar; means for immobilizing the second arm along the bar, and at least one cutter articulated to the second arm.
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