| 摘要 |
A chasing tool for repairing screw threads, which includes a substantially prismatic body (2) with a bottom and a top surface, having on one end of the body a transverse, notch-like recess (4) opening into the top surface and serving as a support for the threaded component the thread of which is to be repaired, and extending in a direction substantially perpendicular to the direction of the notch-like recess, starting from the other end of the body, at least one slot (10) opening into the notch-like recess (4). The tool further includes a handle (16) extending from the bottom surface of the body and is attached thereto with one degree of freedom in rotation. The handle is provided with an axially directed bore (18, 20), at least a portion of which is provided with an internal thread. There is also provided at least one arm (24) fitting into the slot with clearance and hingedly articulated, at a first point, to the body at a region thereof close to the other end, and at a second point, to the terminal portion of a rod at least a part of whose length is provided with an external thread matching the internal thread of the bore in the handle, the free end portion of the arm projecting into the region of the notch-like recess and is provided with thread-chasing means. |
