Stabilized cutting tool assemblies

Patent metadata

Field	Value
Publication number	US-12454017-B2
Application number	US-202318387645-A
Country	US
Kind code	B2
Filing date	Nov 7, 2023
Priority date	Dec 14, 2018
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

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; and
a stabilizer carried by the cutting tool, the stabilizer having a bearing surface arranged to be positioned against the reference surface,
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.

2. The cutting tool assembly of claim 1 , further comprising a first bearing race disposed in the cutting tool and surrounding the rotational axis, wherein the bearing surface includes a plurality of first bearings disposed in the first bearing race.

3. The cutting tool assembly of claim 2 , further comprising a bearing housing disposed in the cutting tool, wherein the bearing surface includes a second bearing disposed in the housing.

4. The cutting tool assembly of claim 3 , wherein the second bearing is disposed along the rotational axis.

5. The cutting tool assembly of claim 2 , further comprising a plurality of channels defined between the plurality of first bearings, respectively, wherein the tool holder includes a fluid passage, and the cutting tool includes an aperture in fluid communication with the fluid passage, and wherein the fluid passage, the aperture, and the plurality of channels cooperate to permit a flow of a fluid into and through the fluid passage, through the aperture, through the plurality of channels, and out of the cutting tool.

6. The cutting tool assembly of claim 2 , further comprising a second bearing race disposed in the cutting tool and surrounding the first bearing race, wherein the bearing surface includes a plurality of second bearings disposed in the second bearing race.

7. The cutting tool assembly of claim 1 , 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.

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

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

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

11. 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 being 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 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; and
a stabilizer carried by the cutting tool, the stabilizer having a bearing surface arranged to be positioned against the reference surface,
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.

12. The cutting tool assembly of claim 11 , further comprising a first bearing race disposed in the cutting tool and surrounding the rotational axis, wherein the bearing surface includes a plurality of first bearings disposed in the first bearing race.

13. The cutting tool assembly of claim 12 , further comprising a bearing housing disposed in the cutting tool, wherein the bearing surface includes a second bearing disposed in the housing, and wherein the second bearing is disposed along the rotational axis.

14. The cutting tool assembly of claim 12 , further comprising a plurality of channels defined between the plurality of first bearings, respectively, wherein the tool holder includes a fluid passage, and the cutting tool includes an aperture in fluid communication with the fluid passage, and wherein the fluid passage, the aperture, and the plurality of channels cooperate to permit a flow of a fluid into and through the fluid passage, through the aperture, through the plurality of channels, and out of the cutting tool.

15. The cutting tool assembly of claim 12 , further comprising a second bearing race disposed in the cutting tool and surrounding the first bearing race, wherein the bearing surface includes a plurality of second bearings disposed in the second bearing race.

16. The cutting tool assembly of claim 11 , 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.

17. The cutting tool assembly of claim 11 , further including a guard surrounding at least a portion of the stabilizer.

18. The cutting tool assembly of claim 11 , wherein the bearing surface is made of a ceramic material.

19. The cutting tool assembly of claim 11 , wherein the stabilizer 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.

20. 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 being 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, 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;
securing a stabilizer to the cutting tool, the stabilizer having a bearing surface;
moving the drive source to position the cutting tool to a position adjacent to the reference surface;
rotating the tool holder and the cutting tool using the drive source; and
bringing the stabilizer into contact with the reference surface to thereby stabilize the cutting tool.

Assignees

• Fisher Controls Int Llc

Inventors

• Boyle Adam T
• Anderson Michael C

Classifications

• 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

• B23D47/12

  of drives for circular saw blades · CPC title

• B33Y40/20

  Post-treatment, e.g. curing, coating or polishing · CPC title

• B28D1/046

  Sawing in a plane parallel to the work table · CPC title

• B23D47/02 Primary

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