Cutting blade and method for producing such a blade
AssigneeHusqvarna AB
InventorAlbin Hagberg
Life of this patent
Estimating the term…
Abstract
A cutting blade for a clearing saw includes a plurality of teeth, with at least some of the teeth having a leading edge, a trailing edge, and a point in between the leading and trailing edges. The trailing edge can be hardened to a depth in the range 0.02-1.5 mm, and the leading edge may be left unhardened to provide a cutting blade with increased durability and efficiency, that can still be filed manually to remain sharp.
Claims9
A cutting blade for a clearing saw, the cutting blade comprising a plurality of teeth, wherein at least some of said teeth comprise a leading edge, a trailing edge, and a point in between the leading edge and the trailing edge, wherein
- the trailing edge is inductively hardened to form a hardened surface having a trailing edge depth in a range of 0.02-1.5 mm by an inductive ring head, wherein a hardness of the trailing edge decreases from a surface of the trailing edge to 590 HV at the trailing edge depth, and
- the leading edge is not subjected to the inductive hardening except at said point.
A method for producing a cutting blade for a clearing saw, the cutting blade comprising a plurality of teeth, the method comprising:
- providing at least some of said teeth with a leading edge, a trailing edge, and a point in between the leading edge and the trailing edge,
- inductively hardening the trailing edge by an inductive ring head to form a hardened surface having a trailing edge depth in a range of 0.02-1.5 mm, wherein a hardness of the trailing edge decreases from a surface of the trailing edge to 590 HV at the trailing edge depth, and
- not subjecting the leading edge to inductive hardening.
Dependencies are inferred from the claim text.