Stabilized cutting tool assemblies

Patent metadata

Field	Value
Publication number	US-11833598-B2
Application number	US-201916712352-A
Country	US
Kind code	B2
Filing date	Dec 12, 2019
Priority date	Dec 14, 2018
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

Stabilized cutting tool assemblies. A cutting tool assembly for use with a reference surface includes a tool holder having a rotational axis. The tool holder is arranged for attachment to a drive source arranged to rotate the tool holder and move the tool holder relative to a reference surface. The cutting tool assembly includes a rotatable cutting tool coupled to the tool holder. The cutting tool includes a cutting surface and has a first portion and a second portion. The first portion is disposed adjacent the tool holder. The cutting tool assembly includes a stabilizer coupled to the cutting tool adjacent the second portion. The stabilizer has a bearing surface. The bearing surface is positioned on the second portion to abut the reference surface and to stabilize the cutting tool when the drive source moves the tool holder and the cutting tool to a position adjacent the reference surface.

First claim

The invention claimed is:

1. A cutting tool assembly, comprising:
a tool holder having a rotational axis, the tool holder arranged for attachment to a drive source arranged to rotate the tool holder about the rotational axis and move the tool holder relative to a reference surface;
a cutting tool removably coupled to the tool holder to rotate with the tool holder about the rotational axis, the cutting tool including a cutting surface and having a first portion that faces toward the tool holder and a second portion that is opposite the first portion and faces away from the tool holder, the second portion arranged for placement adjacent to the reference surface;
a stabilizer carried by the second portion of the cutting tool, the stabilizer having a bearing surface, the bearing surface arranged to be positioned against the reference surface; and
a plurality of fasteners that removably couple the cutting tool and the stabilizer to the tool holder, wherein each of the plurality of fasteners extends through the cutting tool, extends through the stabilizer, and is received by the tool holder,
wherein contact between the stabilizer and the reference surface stabilizes the cutting tool when the drive source rotates and/or moves the tool holder and the cutting tool relative to the reference surface,
wherein the second portion of the cutting tool includes a recess, and wherein at least a portion of the stabilizer is disposed in the recess such that the bearing surface is disposed outside of the recess and faces away from the tool holder.

2. The cutting tool assembly of claim 1 , wherein the bearing surface is arranged on the second portion of the cutting tool in a pattern that surrounds the rotational axis.

3. The cutting tool assembly of claim 2 , wherein the pattern is disc-shaped.

4. The cutting tool assembly of claim 3 wherein the pattern is discontinuous and includes a plurality of sections.

5. The cutting tool assembly of claim 1 , wherein the bearing surface comprises a plurality of bearings disposed in a bearing race.

6. The cutting tool assembly of claim 1 , wherein the tool holder includes a fluid passage, and the cutting tool includes an aperture in fluid communication with the fluid passage, the fluid passage and the aperture cooperating to permit a flow of a fluid from the fluid passage, through the aperture, and past the stabilizer.

7. The cutting tool assembly of claim 1 , further including a guard surrounding at least a portion of the stabilizer.

8. The cutting tool assembly of claim 7 , wherein the guard is compressible.

9. The cutting tool assembly of claim 7 , wherein the guard is a continuous ring.

10. The cutting tool assembly of claim 7 , wherein the guard comprises a brush.

11. The cutting tool assembly of claim 1 , wherein the stabilizer includes a protrusion, the protrusion defining the bearing surface.

12. The cutting tool assembly of claim 11 , wherein the protrusion is centered about the rotational axis.

13. The cutting tool assembly of claim 1 , wherein the stabilizer includes a compressible portion.

14. The cutting tool assembly of claim 1 , wherein the cutting tool surrounds the portion of the stabilizer disposed in the recess.

15. The cutting tool assembly of claim 1 , wherein at least one of the plurality of fasteners is offset from the rotational axis.

16. The cutting tool assembly of claim 1 , wherein the bearing surface is made of ceramic.

17. A cutting tool assembly, comprising:
a drive source having a rotatable chuck assembly and movable relative to a reference surface;
a tool holder removably attachable to the chuck assembly, the tool holder rotatable about a rotational axis;
a cutting tool removably coupled to the tool holder and arranged to rotate with the tool holder about the rotational axis, the cutting tool including a cutting surface, a first portion that faces toward the tool holder and a second portion that is opposite the first portion and faces away from the tool holder;
a stabilizer carried by the second portion of the cutting tool, the stabilizer having a bearing surface arranged to be positioned against the reference surface; and
a plurality of fasteners that removably couple the cutting tool and the stabilizer to the tool holder, wherein each of the plurality of fasteners extends through the cutting tool, extends through the stabilizer, and is received by the tool holder, and
wherein contact between the stabilizing component and the reference surface stabilizes the cutting tool when the drive source rotates and/or moves the tool holder and the cutting tool relative to the reference surface,
wherein the second portion of the cutting tool includes a recess, and wherein at least a portion of the stabilizer is disposed in the recess such that the bearing surface is disposed outside of the recess and faces away from the tool holder.

18. The cutting tool assembly of claim 17 , wherein the stabilizing component comprises a contact layer applied to the portion of the cutting tool, and wherein the contact layer is formed of a material that is dissimilar to a material of the cutting surface of the cutting tool.

19. A method, comprising:
providing a drive source having a rotatable chuck assembly and movable relative to a reference surface;
providing a tool holder removably attachable to the chuck assembly, the tool holder rotatable about a rotational axis;
providing a cutting tool arranged to be removably coupled to the tool holder and arranged to rotate with the tool holder about the rotational axis, and providing a cutting surface on the cutting tool, wherein the cutting tool has a first portion that faces toward the tool holder and a second portion that is opposite the first portion and faces away from the tool holder;
securing a stabilizer to the second portion of the cutting tool, the stabilizer provided with a bearing surface, wherein the cutting tool and the stabilizer are removably coupled to the tool holder via a plurality of fasteners, wherein each of the plurality of fasteners extends through the cutting tool, extends through the stabilizer, and is received by the tool holder;
moving the drive source to position the cutting tool to a position adjacent to the reference surface;
using the drive source to rotate the tool holder and the cutting tool; and
bringing the stabilizer into contact with the reference surface to thereby stabilize the cutting tool,
wherein the second portion of the cutting tool includes a recess, and wherein at least a portion of the stabilizer is disposed in the recess such that the bearing surface is disposed outside of the recess and faces away from the tool holder.

20. The method of claim 19 , including forming the stabilizing component as a contact layer applied to the portion of the cutting tool, and forming the contact layer of a material that is dissimilar to a material of the cutting surface of the cutting tool.

Assignees

• Fisher Controls Int Llc

Inventors

• Boyle Adam T
• Anderson Michael C

Classifications

• B23D35/002

  Means for mounting the cutting members · CPC title

• B23D35/001

  cutting members · CPC title

• B23D47/02 Primary

  of frames; of guiding arrangements for work-table or saw-carrier · CPC title

• B23D47/12

  of drives for circular saw blades · CPC title

• B23D59/025

  the lubricating or cooling medium being applied through the mounting means of the tool, e.g. the tool spindle or hub · CPC title