| 摘要 |
<p>The circular and spiral saw blade has several radial slot-type holes, which are arranged on varying dias. in a rotation-symmetrical manner. At least four slots, moving outwards from the central hole, are symmetrically arranged, and are radially long so that they project over the inner dia. of at least four slots, likewise radially and rotation-symmetrically arranged and ending below the tooth base dia. The inner slots are so arranged in relation to the outer slots that the angle between an outer and an inner slot is less than half the angle between two outer slots. With large saw blades, more than two radially arranged slot groups are provided, located on differing dias.</p> |
