Cutting Blade
AssigneeTritana Intellectual Property Ltd.
InventorDean Mayerle
Life of this patent
Estimating the term…
Abstract
A cutting blade for vegetation is provided for example for use in a straw chopper or rotary mower. The blade includes a first base material and a plurality of hard surface beads of at least two different materials formed on at least one surface of the base material extending up to a cutting edge of the base material wherein the plurality of hard surface beads lie alternately side by side with touching side edges and one contains at least one different material of a different hardness relative to the other so that differential wear rates are created, and a wear profile is controlled. The softer material is burnt away at the edge by the cladding laser to form pockets so that the blade is serrated by the pockets when supplied with additional wear increasing the pockets to maintain the serrations.
Claims19
A blade for mounting on a rotor of a cutting machine for cutting vegetation, the blade comprising:
- a blade member comprising a first base material;
- at least one cutting edge on the blade member;
- side by side strips of cladding material applied to the blade member so as to extend from a position at the cutting edge in a direction transverse to the cutting edge;
- wherein the cladding material is of a greater hardness than the first base material;
- and wherein at least one of the strips of cladding material has greater resistance to wear than others of the strips.
A method for forming a blade for mounting on a rotor of a cutting machine for cutting vegetation comprising:
- defining on a blade body a cutting edge portion;
- applying a plurality of strips of cladding material to the blade body so as to extend on the blade body in a direction transverse to the edge;
- the strips extending between an end of each strip at a position at the edge and an end of the strip remote from the edge;
- the strips being spaced each from the next at positions along the edge;
- wherein the chamfered cutting edge is of a greater resistance to wear at the strips than at locations between each strip and the next;
- and applying heat energy to the locations between each strip and the next so as to remove away a portion of the edge between the strips to form a series of recessed pocket along the edge at the locations defining a serrated edge.
16-18. (canceled)
A method for forming a blade for mounting on a rotor of a cutting machine for cutting vegetation comprising:
- defining on a blade body a cutting edge portion;
- applying a plurality of strips of cladding material to the blade body so as to extend on the blade body in a direction transverse to the edge;
- the strips extending between an end of each strip at a position at the edge and an end of the strip remote from the edge;
- the strips being spaced each from the next at positions along the edge;
- wherein the chamfered cutting edge is of a greater resistance to wear at the strips than at locations between each strip and the next;
- wherein the locations between each strip and the next is covered by a second strip having a resistance to wear less than said strips;
- and applying heat energy to the locations between each strip and the next so as to remove away a portion of the edge between the strips to form a series of recessed pocket along the edge at the locations defining a serrated edge.
A blade for mounting on a rotor of a cutting machine for cutting vegetation, the blade comprising:
- a blade member comprising a first base material;
- at least one cutting edge on the blade member;
- side by side strips of cladding material applied to the blade member so as to extend from a position at the cutting edge in a direction transverse to the cutting edge;
- wherein the cladding material is of a greater hardness than the first base material;
- wherein at least one of the strips of cladding material has greater resistance to wear than others of the strips;
- and wherein the different wear characteristics of the strips is provided by providing different wear characteristics of the cladding material.
20-28. (canceled)
Dependencies are inferred from the claim text.