Stump cutter tooth assembly

Patent metadata

Field	Value
Publication number	US-10856474-B2
Application number	US-201816033325-A
Country	US
Kind code	B2
Filing date	Jul 12, 2018
Priority date	Jul 12, 2018
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A stump cutter tooth assembly includes a stump cutter tooth held by a pocket member that includes an arcuate shoulder having one or more tabs. A stump cutter tooth is adapted to be mounted on the pocket member. The stump cutter tooth includes a tooth body having one or more recesses and an arcuate outer surface. The arcuate outer surface of the stump cutter tooth is adapted to abut against the arcuate shoulder of the pocket member to prevent unwanted movement of the stump cutter tooth relative to the pocket member during the cutting operation. The one or more recesses of the stump cutter tooth cooperate with the one or more tabs of the pocket member to provide an anti-rotation and locating feature.

First claim

What is claimed is:

1. A stump cutter tooth assembly, comprising:
a pocket member including an arcuate shoulder;
a stump cutter tooth adapted to be mounted on the pocket member, the stump cutter tooth including a tooth body having a seating surface, a planar bottom surface and an arcuate outer surface extending from the planar bottom surface; and
at least one hard insert mounted on the seating surface of the tooth body, the at least one hard insert having a primary cutting edge at an intersection between a top surface and an outer flank surface,
wherein the arcuate shoulder of the pocket member is adapted to abut against the arcuate outer surface of the stump cutter tooth to prevent unwanted movement of the stump cutter tooth relative to the pocket member during the cutting operation;
wherein the stump cutter tooth is indexable.

2. The stump cutter tooth assembly according to claim 1 , wherein the stump cutter tooth further comprises one or more recesses formed in the tooth body, and wherein the arcuate shoulder of the pocket member further comprises one or more tabs for cooperating with the one or more recesses to define an anti-rotation and locating feature of the stump cutter tooth assembly.

3. The stump cutter tooth assembly according to claim 1 , wherein the stump cutter tooth further comprises a threaded hole capable of receiving a threaded fastener for mounting the stump cutter tooth in the pocket member.

4. The stump cutter tooth assembly according to claim 1 , further comprising a pair of the hard inserts mounted on the seating surface of the tooth body.

5. The stump cutter tooth assembly according to claim 4 , wherein each hard insert has a boomerang shape.

6. The stump cutter tooth assembly according to claim 4 , wherein the inner flank surface of each hard insert has a planar portion and an arcuate portion.

7. A stump cutter tooth, comprising:
a tooth body having a seating surface, a planar bottom surface and an arcuate outer surface extending from the planar bottom surface; and
at least one hard insert having a boomerang shape mounted on the seating surface of the tooth body, the at least one hard insert having a primary cutting edge at an intersection between a top surface and an outer flank surface,
wherein the arcuate outer surface of the stump cutter tooth is adapted to abut against an arcuate shoulder of a pocket member to prevent unwanted movement of the stump cutter tooth relative to the pocket member during the cutting operation.

8. The stump cutter tooth according to claim 7 , wherein the stump cutter tooth further comprises one or more recesses formed in the tooth body for cooperating with one or more tabs formed in the pocket member to define an anti-rotation and locating feature of the stump cutter tooth assembly.

9. The stump cutter tooth according to claim 7 , wherein the stump cutter tooth further comprises a threaded hole capable of receiving a threaded fastener for mounting the stump cutter tooth in a pocket member.

10. The stump cutter tooth according to claim 7 , further comprising a pair of the hard inserts mounted on the seating surface of the tooth body.

11. The stump cutter tooth according to claim 10 , wherein each hard insert has a boomerang shape.

12. The stump cutter tooth according to claim 10 , wherein the inner flank surface of each hard insert has a planar portion and an arcuate portion.

13. The stump cutter tooth according to claim 7 , wherein the stump cutter tooth is indexable.

14. A hard insert for a stump cutter tooth, comprising:
a top surface;
an outer flank surface;
an inner flank surface; and
a primary edge formed at an intersection between the top surface and the outer flank surface,
wherein the hard insert has a boomerang shape.

15. The hard insert according to claim 14 , wherein the outer flank surface of the hard insert has a substantially planar portion and an arcuate portion.

16. The hard insert according to claim 14 , wherein the inner flank surface of the hard insert has a substantially planar portion and an arcuate portion.

Assignees

• Kennametal Inc
• Vermeer Mfg Co

Inventors

• Carson Jr Duane E
• Roozeboom Keith L
• Weinberg Clint A
• Bloom Robbie D
• Disselkoen Matthew R
• Verzilli Claudio Carrafiello

Classifications

• B23C5/202

  Plate-like cutting inserts with special form (special form related to securing of the insert B23C5/22) · CPC title

• A01G23/067 Primary

  by comminuting the tree stumps · CPC title

• B23C2210/168

  Seats for cutting inserts, supports for replacable cutting bits · CPC title

• B23C2226/18

  Ceramic · CPC title

• B23C2226/315

  polycrystalline [PCD] · CPC title