Tools and methods for forming aligned holes from near full-sized holes

Patent metadata

Field	Value
Publication number	US-11260459-B2
Application number	US-202016864058-A
Country	US
Kind code	B2
Filing date	Apr 30, 2020
Priority date	Apr 30, 2020
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

Tools and methods for creating a plurality of aligned holes from a plurality of near full-sized holes. The tool includes a cutting member having a first diameter and a pilot member connected to and coaxial with the cutting member. A first section of the pilot member includes a centering member and is positioned between the cutting member and the second section having a second diameter. The centering member may include a cutting surface. The second diameter corresponds to a positional tolerance of misalignment of a plurality of near full-sized holes of the same diameter and a full-size hole diameter. The centering member may have a third diameter between the first and second diameters. The centering member may be tapered. The pilot member may be inserted into a plurality of near-full sized holes and the cutting member may cut through the holes to form a plurality of aligned full sized holes.

First claim

What is claimed is:

1. A tool for creating a plurality of aligned full-sized holes from a plurality of near full-sized holes, the tool comprising:
a cutting member having a first diameter;
a pilot member connected to the cutting member, the pilot member being coaxial to the cutting member, the pilot member includes a first section having a centering member having a first length and a second section having a second diameter and a second length, the first section is positioned between the cutting member and the second section, wherein the second diameter is a constant diameter over the second length and wherein the second length is longer than the first length; and
wherein the second diameter corresponds to a positional tolerance of misalignment of the plurality of near full-sized holes and a full-size hole diameter.

2. The tool of claim 1 , wherein the centering member comprises a cutting surface.

3. The tool of claim 1 , wherein the first diameter is larger than the second diameter.

4. The tool of claim 1 , wherein the centering member is configured to center the pilot member within a first hole of the plurality of near full-sized holes.

5. The tool of claim 1 , wherein the centering member is configured to reduce looseness of the pilot member within a first hole of the plurality of near full-sized holes.

6. The tool of claim 1 , wherein the plurality of near full-sized holes includes a first hole and a second hole and wherein at least a portion of a boundary of the first hole and at least a portion of a boundary of the second hole define a clearance gap, the positional tolerance of misalignment including a width dimension of the clearance gap.

7. The tool of claim 6 , the centering member having a third diameter, wherein the third diameter and the second diameter are smaller than each diameter of the plurality of near full-sized holes.

8. The tool of claim 7 , wherein a dimension of the third diameter is half of a difference between a dimension of the first diameter and a dimension of the second diameter.

9. The tool of claim 7 , wherein the first diameter is larger than a diameter of any of the plurality of near full-sized holes.

10. The tool of claim 6 , wherein the centering member comprises a taper.

11. The tool of claim 10 , wherein the taper has a lower end and an upper end, the lower end having a lower diameter that is substantially equal to the second diameter and the upper end having an upper diameter that is substantially equal to the first diameter.

12. The tool of claim 11 , wherein the taper is at substantially 10 degrees.

13. The tool of claim 1 , the second section of the pilot member having an end positioned opposite the first section of the pilot member, the end of the second section being flat.

14. A method for creating a plurality of aligned holes from a plurality of holes, the method comprising:
inserting a pilot member within the plurality of holes, the pilot member includes a first section and a second section, the first section having a centering member, the first section being connected to a cutting member having a first diameter and a first length, the second section having a second diameter that is smaller than the first diameter and having a second length that is longer than the first length, wherein the first section is positioned between the cutting member and the second section and wherein the second diameter corresponds to a positional tolerance of the plurality of holes and a full-size hole diameter, wherein the pilot member is coaxial to the cutting member and wherein the second diameter is a constant diameter over the second length; and
cutting through the plurality of holes with the cutting member.

15. The method of claim 14 , wherein cutting through the plurality of holes with the cutting member further comprises forming a plurality of full-sized holes, wherein the plurality of holes are near full-sized holes.

16. The method of claim 14 , wherein inserting the pilot member within the plurality of holes further comprises inserting the second section having the second diameter into a first hole of the plurality of holes, wherein the second diameter is smaller than a diameter of each of the plurality of holes.

17. The method of claim 16 , further comprising inserting the first section having the centering member into the first hole of the plurality of holes after inserting the second section into the first hole of the plurality of holes to reduce a perceived looseness of the pilot member, wherein the centering member has a third diameter that is larger than the second diameter of the second section of the pilot member reducing a gap between the pilot member and sidewalls of the first hole of the plurality of holes to reduce the perceived looseness of the pilot member.

18. The method of claim 16 , further comprising inserting the first section having the centering member into the first hole of the plurality of holes after inserting the second section into the first hole of the plurality of holes to center the pilot member within the first hole of the plurality of holes, the centering member having a constant diameter that is larger than the second diameter and smaller than the first diameter, the constant diameter of the centering member reducing a gap between the pilot member and sidewalls of the first hole of the plurality of holes to center the pilot member within the first hole of the plurality of holes.

19. The method of claim 16 , further comprising inserting the first section having the centering member into the first hole of the plurality of holes after inserting the second section into the first hole of the plurality of holes to center the pilot member within the first hole of the plurality of holes, the centering member having a tapered surface, the tapered surface reduces a gap between the pilot member and sidewalls of the first hole of the plurality of holes to center the pilot member within the first hole of the plurality of holes.

20. The method of claim 19 , further comprising cutting through the plurality of holes by contacting a sidewall of at least one hole of the plurality holes with a cutting surface on the tapered surface of the centering member.

Assignees

• Boeing Co

Inventors

• Scheibel John P
• Scherer James L
• Ward Michael A

Classifications

• B23Q3/06

  Work-clamping means · CPC title

• B23D79/00 Primary

  Methods, machines, or devices not covered elsewhere, for working metal by removal of material (by combined operations B23D81/00; cutting by electron-beam B23K15/00, by laser beam B23K26/00; by electro-erosion B23H; tool holders for machine tools B23Q3/00; handles for hand implements B25G) · CPC title

• B23B2215/04

  Aircraft components · CPC title

• Y10T408/9065

  with central lead · CPC title

• B23B2251/60

  Drills with pilots · CPC title