| 摘要 |
The hole saw slug removal device is constructed to fit within a hole saw and provides for automatic ejection of waste slugs from within the hole saw. The hole saw slug removal device has two discs affixed on either end of a compression spring. The device is inserted into the hole saw, and one disc retains the compression spring within the hole saw by locking onto the drill bit or against the inner surface of the hole saw. Upon operation of the hole saw, the spring compresses and the other disc is pushed down by the force of the sawing, the spring expanding to automatically eject the slug from within the hole saw when the saw is withdrawn from the workpiece. The hole saw pilot bit may have an annular groove on the shank between the flat(s) and fluted cutting edges that is engaged by one of the discs.
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