| 摘要 |
The present invention provides for an improved drill bit storage rack having a housing with openings of differing diameters formed therein to accommodate drill bits of differing sizes. An outer cylindrical tube member adapted for insert into a housing opening is provided and is inserted into the housing opening in contiguous contact with the drill bit storage rack. A central interior cylindrical tube member is located within the outer cylindrical tube member and is rotatably displaceable with respect thereto. The central interior cylindrical tube member includes a through opening defining an interior wall having a pair of pin members extending inwardly with respect to the interior wall. A pair of opposing cylindrical tube members are secured within and to the outer cylindrical tube member on opposing sides of the central interior cylindrical tube member for rotatably capturing the central interior cylindrical tube member therebetween. In this manner, a drill bit having helical grooves is inserted within the outer cylindrical tube and the pin members are insertable within the helical grooves for guiding the drill bit to a predetermined position within the outer cylindrical tube. |
