| 摘要 |
A saw blade with teeth having a tooth point with a tooth edge (E1, E2), a tooth face on the front side of the tooth as viewed in the direction of sawing, a tooth back behind the tooth edge, and a tooth bottom between the tooth face on each tooth and the tooth back on the next tooth in front of said each tooth, and tooth gullets, wherein a tooth gullet (G1, G2) is defined as the space between the tooth edges of two adjacent teeth, said saw blade having two planar sides; a right hand side (R) and a left hand side (L) when the saw blade is viewed obliquely from above in the direction of sawing, wherein said tooth edge (E1, E2) extends between a right hand tooth corner (A1, A2) and a left hand tooth corner (B1, B2) with reference to said viewing direction, comprising the saw blade within a region of a first tooth gullet between the tooth edge (E1) of a first tooth (T1) and the tooth edge (E2) of the next tooth (T2) in front of said first tooth is bevelled such that the saw blade surface (S1) within said region slopes towards the left hand side (L) of the saw blade forming an obtuse angle with said left hand side, said bevelled region with said sloping surface (S1) extending from a first tooth edge (E1) in the rear end of the first tooth gullet, downwards the tooth face and to at least the tooth bottom, said region being bordered to the right by a first line (K1) which extends from a rear foot point defined by the right hand tooth corner (A1) on the first tooth edge (E1) or by a point (A1) on the first tooth edge, which point is nearer the right hand tooth corner (A1) than the left one (B1), to a front foot point (C) which borders on the left hand side of the saw blade in the region of the first tooth gullet or is a point (C') on the tooth edge (E2) on the next tooth (T2) in front of said first tooth, to the left by the border line against the left planar side of the saw blade, and forwards by said first line and/or by the tooth edge (E2) of said next tooth (T2) when the front foot point of said first line lies on said next tooth edge; that the saw blade, within a region of a second tooth gullet (G2) between a second tooth and a next tooth in front of said second tooth is bevelled in the same way as in the first tooth gullet but instead to the right, and that the saw blade within the region of first and second tooth gullets between first or second teeth, on one hand, and teeth in front thereof, on the other hand, along the length of the saw blade are bevelled in the said mode alternating to the left and to the right in said first and second tooth gullets.
|
