Saw blade having increased tooth stiffness and resistance to fatigue failure
First Claim
1. A saw blade, comprising:
- a cutting edge including a plurality of first means for cutting spaced relative to each other, each first means including;
a tip;
a rake face formed on one side of the tip;
a primary clearance surface formed on an opposite side of the tip relative to the rake face;
at least one secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; and
a gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip;
wherein each first means defines;
a first gullet radius (R1) located between the gullet and the at least one secondary clearance surface;
a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and
a pitch (P) between the respective first means and a preceding first means in a cutting direction of the saw blade; and
wherein R2>
D>
R1, and D/P is within the range of about 25% to about 35%.
1 Assignment
0 Petitions
Accused Products
Abstract
A band saw blade comprising a plurality of teeth, wherein each tooth comprises a tip; a rake face formed on one side of the tip; a primary clearance surface formed on an opposite side of the tip relative to the rake face; a secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; and a gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip. Each tooth further defines a first gullet radius (R1) located between the gullet and the secondary clearance surface; a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and a pitch (P) between the respective tooth and a preceding tooth. In each tooth, R2>D>RQ, and D/P is between about 25% and 35%.
87 Citations
24 Claims
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1. A saw blade, comprising:
-
a cutting edge including a plurality of first means for cutting spaced relative to each other, each first means including; a tip; a rake face formed on one side of the tip; a primary clearance surface formed on an opposite side of the tip relative to the rake face; at least one secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; and a gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip;
wherein each first means defines;a first gullet radius (R1) located between the gullet and the at least one secondary clearance surface; a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and a pitch (P) between the respective first means and a preceding first means in a cutting direction of the saw blade; and wherein R2>
D>
R1, and D/P is within the range of about 25% to about 35%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A saw blade, comprising:
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a cutting edge defined by a plurality of teeth spaced relative to each other, each tooth including; a tip; a rake face formed on one side of the tip; a primary clearance surface formed on an opposite side of the tip relative to the rake face; at least one secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; and a gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip;
wherein each tooth defines;a first gullet radius (R1) located between the gullet and the at least one secondary clearance surface; a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and a pitch (P) between the respective tooth and a preceding tooth in a cutting direction of the saw blade; and wherein R2>
D>
R1, and D/P is within the range of about 25% to about 35%. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A wood cutting band saw blade, comprising:
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a cutting edge defined by a plurality of teeth spaced relative to each other, each tooth including; a tip; a rake face formed on one side of the tip, wherein the rake face defines an acute rake face angle within the range of about 5°
to about 20°
, extends to a depth D3 below the tip, and D3 is within the range of about 0.01 inch to about 0.06 inch;a primary clearance surface formed on an opposite side of the tip relative to the rake face; a secondary clearance surface formed on an opposite side of the primary clearance surface relative to the tip; a tertiary clearance surface formed on an opposite side of the secondary clearance surface relative to the primary clearance surface, wherein the primary clearance surface defines a primary acute relief angle within the range of about 22°
to about 35°
, the secondary clearance surface defines a secondary acute relief angle within the range of about 5°
to about 20°
, the tertiary clearance surface is defined by a radius within the range of about 0.06 inch to about 0.1 inch, and said radius terminates at a depth D2 below the tip within the range of about 0.06 inch to about 0.1 inch; anda gullet located on an opposite side of the rake face relative to the tip and defining a depth (D) between a base surface of the gullet and the tip;
wherein each tooth defines;a first gullet radius (R1) located between the gullet and the tertiary clearance surface; a second gullet radius (R2) extending between a base surface of the gullet and the rake face; and a pitch (P) between the respective tooth and a preceding tooth in a cutting direction of the saw blade; and wherein R2>
D>
R1, R2/R1≧
about 1.4, and D/P is within the range of about 25% to about 35%.
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Specification