| 摘要 |
The invention concerns quick-change arbor (12) for a hole-saw (13), as well as a hole-saw (13) and an adaptor to allow for an existing hole-saw suitable to be used with the quick-change arbor (12) according to the invention. The quick-change arbor (12) consists of a longitudinal body (6) provided over almost its whole length with a groove in which a spring-loaded latch (7) is mounted, which at one end is provided with a notch (8). The cup base (1b) of the hole-saw (13) is provided with a flange (2), of which the inner diameter corresponds with the diameter of the quick-change arbor (12). <??>Furthermore, the flange is provided with a groove (3), which cooperates with the latch (7) in the quick-change arbor (12) and fixes the hole-saw (13) radially with respect to the quick-change arbor (12). The notch (8) in the latch ensures an axial fixation in concert with the rim (4) of the cup base at the position of the groove (3) in the flange (2). After unlocking of the hole-saw (13) by pressing the spring-loaded latch (7), the hole-saw (13) can be slid axially along the quick-change arbor (12), through which the sawn plug can be removed from the hole-saw (13) through the toothed end of the hole saw (13). <IMAGE> <IMAGE> |
