| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe boring device, smoother in rotation than a conventional boring device, hardly clogging chips when opening a hole, capable of opening the hole of a desired dimension in a predetermined place of a pipe, and capable of preventing damage of a laying object in the pipe by excessive cutting.SOLUTION: A pipe boring device comprises: a pipe holding body capable of holding a pipe from its outside; a cutter support base provided in the pipe holding body; a lifting body liftably screw-fitted to a screw hole of the cutter support base; a cutter holder rotatably set in the lifting body; and a cutter held by the cutter holder. The cutter holder comprises a rotary shaft capable of detachably attaching a drill, and the cutter is rotated by rotating the rotary shaft by the drill, and the hole can be bored in the pipe by the cutter when pushing against the pipe by passing through the inside of an insertion hole of the pipe holding body by lowering the rotating cutter, by screwing the lifting body in the screw hole of the cutter support base by manual operation. |
