Saw blade

Patent metadata

Field	Value
Publication number	US-11413694-B2
Application number	US-202117307231-A
Country	US
Kind code	B2
Filing date	May 4, 2021
Priority date	Nov 2, 2015
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A saw blade includes a body and a plurality of cutting teeth formed on the body. Each cutting tooth includes a tip at a first end of the cutting tooth, a rake face extending from the tip toward the body, a relief face extending from the tip toward a second end of the cutting tooth and sloping toward the body, and a projection at the second end of the cutting tooth and sloping away from the body. The saw blade also includes a plurality of gullets formed on the body between the plurality of cutting teeth. Each gullet forms an undercut portion between the body and the projection of each cutting tooth.

First claim

The invention claimed is:

1. A saw blade comprising:
a body;
a plurality of cutting teeth formed on the body, each cutting tooth including a first tip at a first end of the cutting tooth, a first rake face extending from the first tip toward the body, a second tip at a second end of the cutting tooth, and a second rake face extending from the second tip toward the body, the first rake face having a first linear segment extending from the first tip, the second rake face having a second linear segment extending from the second tip; and
a plurality of gullets formed on the body between the plurality of cutting teeth, each gullet forming a first undercut portion adjacent the first linear segment of one of the plurality of cutting teeth and a second undercut portion adjacent the second linear segment of an adjacent cutting tooth.

2. The saw blade of claim 1 , wherein the first tip of each cutting tooth is formed from a first carbide insert, and wherein the second tip of each cutting tooth is formed from a second carbide insert.

3. The saw blade of claim 2 , wherein a portion of each cutting tooth is defined by a tooth body, and wherein the first rake face of each cutting tooth is defined by the first carbide insert and the tooth body of each cutting tooth, and wherein the second rake face of each cutting tooth is defined by the second carbide insert and the tooth body of each cutting tooth.

4. The saw blade of claim 1 , wherein the first and second tips of each cutting tooth are formed from a single carbide insert.

5. The saw blade of claim 4 , wherein a portion of each cutting tooth is defined by a tooth body, and wherein the first rake face and the second rake face of each cutting tooth is defined by the single carbide insert and the tooth body of each cutting tooth.

6. The saw blade of claim 1 , wherein a portion of each cutting tooth is defined by a tooth body, and wherein adjacent tooth bodies define an opening width measured between the first end and the second end of adjacent cutting teeth, and wherein each gullet defines a gullet width measured between the first undercut portion and the second undercut portion of adjacent cutting teeth that is greater than the opening width.

7. The saw blade of claim 1 , wherein the first undercut portion of one of the plurality of cutting teeth and the second undercut portion of an adjacent cutting tooth have a constant radius of curvature.

8. The saw blade of claim 1 , further comprising an attachment portion coupled to the body, the attachment portion including a tang and an aperture configured to couple to a reciprocating saw.

9. A method of manufacturing a saw blade, the method comprising:
providing a saw blade body having an edge;
coupling a carbide strip to the edge of the saw blade body;
forming a plurality of cutting teeth in the carbide strip and the saw blade body after the carbide strip is coupled to the edge, each cutting tooth including a first tip at a first end of the cutting tooth, a first rake face extending from the first tip toward the saw blade body, a second tip at a second end of the cutting tooth, and a second rake face extending from the second tip toward the saw blade body, the first rake face having a first linear segment extending from the first tip, the second rake face having a second linear segment extending from the second tip; and
forming a plurality of gullets in the saw blade body between the plurality of cutting teeth, each gullet forming a first undercut portion adjacent the first linear segment of one of the plurality of cutting teeth and a second undercut portion adjacent the second linear segment of an adjacent cutting tooth.

10. The method of claim 9 , wherein forming the plurality of cutting teeth and forming the plurality of gullets are simultaneously performed by a stamping process.

11. The saw blade of claim 1 , wherein each cutting tooth includes a first relief surface extending from the first tip toward the body and a second relief surface extending from the second tip toward the body.

12. The saw blade of claim 11 , wherein an edge of the body connects the first and second relief surfaces.

13. The saw blade of claim 1 , wherein each cutting tooth includes a relief surface extending between the first tip and the second tip.

14. The saw blade of claim 13 , wherein the first and second tips of the plurality of cutting teeth define a plane, and wherein the relief surface of each cutting tooth is coextensive with the plane.

15. The saw blade of claim 6 , wherein the gullet width is greater than a distance measured between the first tip and the second tip of adjacent cutting teeth.

16. The saw blade of claim 15 , wherein the opening width is greater than the distance measured between the first tip and the second tip of adjacent cutting teeth.

17. The saw blade of claim 1 , wherein a portion of each cutting tooth is defined by a tooth body, and wherein adjacent tooth bodies define an opening width measured between the first end and the second end of adjacent cutting teeth, and wherein a distance measured between the first tip and the second tip of adjacent cutting teeth is less than the opening width.

18. The method of claim 9 , wherein forming the plurality of cutting teeth in the carbide strip provides a relief surface between the first tip and the second tip.

19. The method of claim 18 , wherein the relief surface is coextensive with a plane defined by the first and second tips.

20. The method of claim 9 , further comprising forming an attachment portion coupled to the saw blade body, wherein the attachment portion includes a tang and an aperture configured to couple to a reciprocating saw.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Trautner Paul
• Felton Shane N

Classifications

• B23D61/14 Primary

  with inserted saw teeth {, i.e. the teeth being individually inserted} · CPC title

• B23D65/045

  Making saw blades by using tooth inserters · CPC title

• B23D61/121 Primary

  Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet · CPC title

• B23D61/125 Primary

  Composite body, e.g. laminated · CPC title

• B23D61/1218

  with a depth limiter on the saw blade · CPC title