Bandsaw blades for milling timber
AssigneeThe Minister for Industry and Decentralisation of the State of New South Wales
InventorAlexandre Krilov
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Abstract
A bandsaw blade for use in milling timber having in-line swaged teeth, wherein the cutting tip of each tooth, in front profile, is triangular in shape with a central apical point (30) and two side points (32, 34). Preferably, the apical angle (.theta.) is from 60.degree. to 140.degree., with the base angles (.gamma.) of the tip being equal to one another and lying from 20.degree. to 60.degree., thus providing an elongate pentagon shape in front profile. Also, a dark blue temper band (50) may be curved so that its top is spaced below the apical point (30) by a distance of 0.5 to 1.3 times, preferably 0.6 to 1.2 times, the blade thickness.
Claims3
A bandsaw blade for use in the milling of timber and which has in-line swaged teeth;
- the swaged portion of each tooth being shaped as an elongate pentagon which blends uniformly into adjacent unswaged regions of the tooth, the swaged portion of each tooth having a front face which is substantially planar, a hook angle of 25.degree. to 35.degree., a sharpness angle of 40.degree. to 45.degree., a clearance angle of 15.degree. to 20.degree. and a cutting tip which, in front profile, is triangular in shape, the triangular cutting tip having a central apical angle falling within the range of 60.degree. to 140.degree. and base angles falling within the range of 20.degree. to 60.degree., and is hardened to a hardness level falling within the range of 900 to 920 DPN.
Dependencies are inferred from the claim text.