Wear resistant disk blade and agricultural machine with wear resistant disk blade

Patent metadata

Field	Value
Publication number	US-10932402-B2
Application number	US-201715615404-A
Country	US
Kind code	B2
Filing date	Jun 6, 2017
Priority date	Oct 11, 2016
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A disk blade having a circular blade body of a first base material of a first hardness and having top and a bottom surfaces and an outer edge extending around the blade body. At least one clad bead extends circumferentially about the blade body on the bottom surface adjacent the outer edge of a second hardness greater than the first hardness of the base material. Various bead patterns are possible.

First claim

What is claimed is:

1. A disk blade comprising:
a circular blade body configured to penetrate into and move through soil, the circular blade body being of a first base material having a first hardness and having a top surface and a bottom surface and an outer edge extending around a periphery of the circular blade body; and
at least one raised clad bead extending circumferentially about the blade body on the bottom surface adjacent the outer edge, the raised clad bead having a second hardness greater than the first hardness and being configured to cause selective wear of the first base material of the circular blade body.

2. The disk blade of claim 1 , wherein the at least one raised clad bead comprises a straight circular bead extending about the circular blade body at a constant distance from the outer edge.

3. The disk blade of claim 2 , wherein the at least one raised clad bead further comprises a plurality of straight circular clad beads concentrically arranged relative to one another.

4. The disk blade of claim 3 , wherein the plurality of straight circular clad beads are adjacent one another without any exposed base material between adjacent straight circular clad beads.

5. The disk blade of claim 3 , wherein the plurality of straight circular clad beads are radially spaced from one another with exposed base material between adjacent straight circular clad beads.

6. The disk blade of claim 1 , wherein the at least one raised clad bead comprises a wave bead having smooth repetitive oscillations of varying distance from the outer edge.

7. The disk blade of claim 6 , wherein the at least one raised clad bead further comprises a plurality of wave beads concentrically arranged relative to one another.

8. The disk blade of claim 6 , wherein one or more raised clad beads of the at least one raised clad bead has a width of between 1.5 mm and 10 mm.

9. The disk blade of claim 6 , wherein one or more raised clad beads of the at least one raised clad bead has a width of between 10 mm and 40 mm.

10. The disk blade of claim 9 , wherein the top surface of the circular blade body comprises a beveled portion extending radially inward from the outer edge a distance approximately equal to the width of one or more raised clad beads of the at least one raised clad bead.

11. The disk blade of claim 1 , wherein the at least one raised clad bead comprises one straight circular bead and one wave bead.

12. The disk blade of claim 6 , wherein the wave bead has leg portions extending between inner apexes and outer apexes of the wave bead and wherein the leg portions extend substantially radially.

13. A disk blade comprising:
a circular blade body configured to penetrate into and move through soil, the circular blade body being of a first base material having a first hardness and having opposite top and bottom surfaces and an outer edge extending around a periphery of the circular blade body, the bottom surface of the circular blade body having a recessed ring portion adjacent the outer edge; and
a wear resistant second material substantially filling the recessed ring portion to form a substantially continuous bottom surface of the blade body, the wear resistant second material having a second hardness greater than the first hardness, wherein the top surface of the circular blade body comprises a beveled portion extending radially inward from the outer edge of the top surface of the circular blade body, wherein a radial width of the beveled portion is approximately equal to a radial width of the recessed ring portion, and wherein the beveled portion comprises a radially outer beveled portion having a first bevel angle and a radially inner beveled portion having a second bevel angle.

14. A disk blade comprising:
a circular blade body configured to penetrate into and move through soil, the circular blade body being of a first base material having a first hardness and having a top surface and a bottom surface and an outer edge extending around the circular blade body; and
a plurality of clad beads extending radially inwardly from the outer edge of the circular blade body, the plurality of clad beads having a second hardness greater than the first hardness, wherein each clad bead of the plurality of clad beads is curved so as to be more tangential to the outer edge of the circular blade body at an outer end of the clad bead and curved to be more radial to the circular blade body at an inner end of the clad bead.

15. A disk blade comprising:
a circular blade body configured to penetrate into and move through soil, the circular blade body being of a first base material having a first hardness and having opposite top and bottom surfaces and an outer edge extending around a periphery of the circular blade body, the bottom surface of the circular blade body having a recessed ring portion adjacent the outer edge; and
a wear resistant second material substantially filling the recessed ring portion to form a substantially continuous bottom surface of the blade body, the wear resistant second material having a second hardness greater than the first hardness, wherein the recessed ring portion extends radially outward to an outermost point on the outer edge.

Assignees

• Deere & Co

Inventors

• Groves Tyler G
• Martin Robert W
• Augustine Brent A
• Nedved Peter R

Classifications

• B22F1/16

  Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title

• A01B23/06 Primary

  Discs; Scrapers for cleaning discs; Sharpening attachments · CPC title

• B23K26/34

  Laser welding for purposes other than joining · CPC title

• A01B33/024 Primary

  with disk-like tools · CPC title

• B22F1/02

  Operations & Transport · mapped topic