Minimum quantity lubrication multidiameter cutting tool oil delivery

Patent metadata

Field	Value
Publication number	US-11097359-B2
Application number	US-201916513968-A
Country	US
Kind code	B2
Filing date	Jul 17, 2019
Priority date	Jul 17, 2019
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A cutting tool includes a body having a base and a cutting portion. The cutting portion defines a plurality of first edges and a plurality of second edges. The body defines a trunk passage, a plurality of first branch passages, and a plurality of first independent passages. Each of the first branch passages is open to the trunk passage and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the second edges. Each of the first independent passages is independent of the trunk passage and the first branch passages and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the first edges.

First claim

What is claimed is:

1. A cutting tool comprising:
a body disposed about a central axis and having a base and a cutting portion, the cutting portion defining a plurality of first edges and a plurality of second edges, the plurality of first edges being located at a first diameter and configured to remove material from a workpiece, the plurality of second edges being located at a second diameter that is greater than the first diameter and configured to remove material from the workpiece, the body defining a trunk passage, a plurality of first branch passages, and a plurality of first independent passages,
wherein each of the first branch passages is open to the trunk passage and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the second edges such that the outlets of the first branch passages are configured to provide a mixture of lubrication oil and air to the second edges to lubricate the second edges, and
wherein each of the first independent passages is independent of the trunk passage and the first branch passages and has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the first edges such that the outlets of the first independent passages are configured to provide the mixture of lubrication oil and air to the first edges to lubricate the first edges, wherein each of the first independent passages has an inlet defined by the base and open to an exterior of the base.

2. The cutting tool according to claim 1 , wherein the trunk passage is coaxially disposed about the central axis of the body and the first independent passages are not coaxial with the central axis.

3. The cutting tool according to claim 1 , wherein the body defines a plurality of second branch passages and the cutting portion defines a plurality of third edges configured to remove material from the workpiece, the third edges being located at a third diameter that is greater than the second diameter, wherein each of the second branch passages is open to the trunk passage and has an outlet open through an exterior of the cutting portion proximate to a corresponding one of the third edges such that the outlets of the second branch passages are configured to provide the mixture of lubrication oil and air to the third edges to lubricate the third edges.

4. The cutting tool according to claim 1 , wherein the body defines a plurality of second independent passages and the cutting portion defines a plurality of third edges configured to remove material from the workpiece, the third edges being located at a third diameter that is greater than the first diameter and less than the second diameter, wherein each of the second independent passages is independent of the trunk passage, the first branch passages, and the first independent passages and wherein each of the second independent passages has an outlet open to an exterior of the cutting portion proximate to a corresponding one of the third edges such that the outlets of the second independent passages are configured to provide the mixture of lubrication oil and air to the third edges to lubricate the third edges.

5. The cutting tool according to claim 1 , wherein the first edges are rotationally offset from the second edges.

6. The cutting tool according to claim 1 , wherein the branch passages extend linearly from the trunk passage to the second edges and the first independent passages extend linearly through the cutting portion to the first edges.

7. The cutting tool according to claim 1 , wherein the base includes a sealing surface and a pre-chamber, the sealing surface being at an end of the base that is opposite the cutting portion and being configured to form a seal with a mating surface of a tool holder that is configured rotate the cutting tool about the central axis, the pre-chamber being recessed into the sealing surface, the trunk passage having an inlet open to the pre-chamber, each inlet of the first independent passages is open to the pre-chamber.

8. The cutting tool according to claim 1 , wherein the first and second edges are helical.

9. The cutting tool according to claim 1 , wherein the first and second edges are planar.

10. A minimum quantity lubrication (MQL) cutting machine comprising the cutting tool according to claim 1 , wherein the MQL cutting machine is configured to provide the mixture of lubrication oil and air to the cutting tool.

11. A cutting tool comprising:
a body having a base and a cutting portion, the body defining a trunk passage, a plurality of first branch passages, and a plurality of first independent passages, the cutting portion defining a plurality of first edges configured to remove material from a workpiece at a first diameter and a plurality of second edges configured to remove material from a workpiece at a second diameter that is greater than the first diameter,
wherein the base defines an inlet of the trunk passage,
wherein each of the first branch passages has an inlet open to the trunk passage and an outlet open to an exterior of the cutting portion proximate to a corresponding one of the second edges such that the outlets of the first branch passages are configured to provide a mixture of lubrication oil and air to the second edges to lubricate the second edges, and
wherein each of the first independent passages has an inlet defined by the base and open to an exterior of the base and an outlet open to an exterior of the cutting portion proximate to a corresponding one of the first edges such that the outlets of the first independent passages are configured to provide the mixture of lubrication oil and air to the first edges to lubricate the first edges.

12. The cutting tool according to claim 11 , wherein the first independent passages are independent of the first branch passages and the trunk passage throughout the body.

13. The cutting tool according to claim 11 , wherein the body is disposed about a rotational axis and the trunk passage extends longitudinally coaxial with the rotational axis.

14. The cutting tool according to claim 13 , wherein the first edges are rotationally offset from the second edges.

15. The cutting tool according to claim 13 , wherein the first independent passages extend along corresponding first axes that are parallel and offset from the rotational axis.

16. The cutting tool according to claim 15 , wherein the first branch passages extend linearly from the trunk passage to the second edges.

17. The cutting tool according to claim 11 , wherein the body defines a plurality of second branch passages and the cutting portion defines a plurality of third edges, the third edges being configured to remove material from the workpiece at third diameter greater than second diameter, wherein each of the second branch passages has an inlet open to the trunk passage and an outlet open to an exterior of the cutting portion proximate to a corresponding one of the third edges such that the outlets of the second branch passages are configured to provide the mixture of lubrication oil and air to the third edges to lubricate the third edges.

18. The cutting tool according to claim 11 , wherein the body defines a plurality of second independent passages and the cutting portion defines a plurality of third edges, the third edges being configured to remove material from the workpiece at third diameter different than first diameter and the second diameter, wherein each of the second independent passages is independent of the trunk passage, the first branch passages, and the first independent passages, wherein each secon

Assignees

• Ford Global Tech Llc

Inventors

• Stephenson David Alan
• Hughey Ethan Timothy

Classifications

• B23Q11/1046 Primary

  using a minimal quantity of lubricant (spraying apparatus using a carrying fluid B05B7/00) · CPC title

• B23B27/10

  Cutting tools with special provision for cooling {(drills with lubricating or cooling equipment B23B51/06; features relating to lubricating or cooling of milling cutters B23C5/28; arrangements or devices for cooling or lubricating tools or work B23Q11/10)} · CPC title

• B23B51/009

  Stepped drills · CPC title

• B23B51/06 Primary

  Drills with lubricating or cooling equipment {(B23B51/042 takes precedence)} · CPC title

• B23Q11/1023

  Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle · CPC title