Deburring chamfer tool

Patent metadata

Field	Value
Publication number	US-11458549-B2
Application number	US-202117186187-A
Country	US
Kind code	B2
Filing date	Feb 26, 2021
Priority date	May 28, 2020
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A deburring chamfer tool has a main body including a working end for engaging a workpiece to be deburred. The working end is of a conical shape and has a first and a second cutting edge respectively extending lengthwise with reference to different slant reference lines which delimit the conical shape. Each of the first and the second cutting edges slope from a first end adjacent to the vertex of the conical shape to a second end adjacent to the base of the conical shape in a first length and a second length respectively. The second length is smaller than the first length.

First claim

What is claimed is:

1. An internal deburring chamfer tool which is operably rotated about an axis of rotation, comprising:
a main body including a working end for engaging a workpiece to be deburred, wherein the working end is of a conical shape and has a first cutting edge and a second cutting edge respectively extending lengthwise with reference to two slant reference lines which delimit the conical shape, wherein each of the first cutting edge and the second cutting edge slopes from a first end adjacent to the vertex of the conical shape to a second end adjacent to the base of the conical shape in a first length and a second length respectively, wherein the first end of the second cutting edge is further away from the vertex of the conical shape than the first end of the first cutting edge, and the second end of the first cutting edge and the second end of the second cutting edge are at substantially a same height of the conical shape,
and wherein the second length is smaller than the first length, wherein the working end has a first and a second peripheral surface constituting an outer peripheral surface of the main body and an edge of the first peripheral surface defines the first cutting edge and an edge of the second peripheral surface defines the second cutting edge respectively.

2. The internal deburring chamfer tool as claimed in claim 1 , wherein each of the two reference lines is inclined to the axis of rotation greater than 20 degrees and lesser than 60 degrees.

3. The internal deburring chamfer tool as claimed in claim 1 , wherein the working end has a first indented surface separating the first and the second peripheral surfaces as well as the first and the second cutting edges.

4. The internal deburring chamfer tool as claimed in claim 3 , wherein the working end has a first rib and a surface of the first rib defines the first peripheral surfaces, wherein the working end has a second rib and a surface of the second rib defines the second peripheral surface, wherein the first rib has a lateral surface inclined to the first peripheral surface and the second rib has a lateral surface inclined to the second peripheral surface respectively, and wherein the first rib includes the lateral surface thereof contiguous to the first cutting edge and the second rib includes the lateral surface thereof contiguous to the second cutting edge respectively.

5. The internal deburring chamfer tool as claimed in claim 4 , wherein the lateral surface of the first rib is inclined to the first peripheral surface not greater than 90 degrees, and wherein the lateral surface of the second rib is inclined to the second peripheral surface not greater than 90 degrees.

6. The internal deburring chamfer tool as claimed in claim 3 , wherein the working end has at least one third peripheral surface constituting the conical shape, wherein the working end has at least one third cutting edge and an edge of the at least one third peripheral surface defines the at least one third cutting edge, wherein the at least one third cutting edge slopes from a first end adjacent to the vertex of the conical shape to a second end adjacent to the base of the conical shape in a length longer than the second length, wherein the first indented surface separates at least one third and the second peripheral surfaces as well as the at least one third and the second cutting edges, and wherein the second cutting edge is situated between the first and the at least one third cutting edges circumferentially.

7. The internal deburring chamfer tool as claimed in claim 6 , wherein the working end has at least one fourth peripheral surfaces constituting the conical shape, wherein the working end has at least one fourth cutting edge and an edge of the at least one fourth peripheral surface defines the at least one fourth cutting edge, wherein the at least one fourth cutting edge slopes from a first end adjacent to the vertex of the conical shape to a second end adjacent to the base of the conical shape in a length less than the length of the at least one third cutting edge, wherein the at least one third and the at least one fourth cutting edges are alternatively situated circumferentially, and wherein the working end has a second indented surface separating the at least one third and the at least one fourth peripheral surfaces as well as the at least one third and the at least one fourth cutting edges.

8. The internal deburring chamfer tool as claimed in claim 7 , wherein the first and the at least one third cutting edges are of the same length, and wherein the second and the at least one fourth cutting edges are of the same length.

9. The deburring chamfer tool as claimed in claim 8 , wherein the main body includes a connecting end adapted to be connected to a driving tool.

10. The internal deburring chamfer tool as claimed in claim 7 , wherein the working end has at least one third rib and a surface of the at least one third rib defines the at least one third peripheral surface, wherein the at least one third rib has a lateral surface inclined to the at least one third peripheral surface, wherein the working end has at least one fourth rib and a surface of the at least one fourth rib defines the at least one fourth peripheral surface, wherein the at least one fourth rib has a lateral surface inclined to the at least one fourth peripheral surface, and wherein the at least one third rib includes the lateral surface thereof contiguous to the at least one third cutting edge and the at least one fourth rib includes the lateral surface thereof contiguous to the at least one fourth cutting edge respectively.

11. The internal deburring chamfer tool as claimed in claim 7 , wherein the first, the second, the at least one third, and the at least one fourth cutting edges extend linearly.

12. The internal deburring chamfer tool as claimed in claim 7 , wherein the first, the second, the at least one third, and the at least one fourth cutting edges extend curvedly.

13. The internal deburring chamfer tool as claimed in claim 6 , wherein the first and the at least one third cutting edges are of the same length.

14. The internal deburring chamfer tool as claimed in claim 13 , wherein the main body includes a connecting end adapted to be connected to a driving tool.

15. The internal deburring chamfer tool as claimed in claim 6 , wherein the working end has at least one third rib and a surface of the at least one third rib defines the at least one third peripheral surface, wherein the at least one third rib has a lateral surface inclined to the at least one third peripheral surface, and wherein the at least one third rib includes the lateral surface thereof contiguous to the at least one third cutting edge.

16. The internal deburring chamfer tool as claimed in claim 15 , wherein the lateral surface of the at least one third rib is inclined to the at least one third peripheral surface not greater than 90 degrees.

17. The internal deburring chamfer tool as claimed in claim 15 , wherein the lateral surface of the at least one third rib is inclined to the at least one third peripheral surface not greater than 90 degrees, and wherein the lateral surface of the at least one fourth rib is inclined to the at least one fourth peripheral surface not greater than 90 degrees.

18. The internal deburring chamfer tool as claimed in claim 1 , wherein the main body includes a connecting end adapted to be connected to a driving tool.

19. The internal deburring chamfer tool as claimed in claim 1 , wherein the first and the second cutting edges

Assignees

• Hong Ann Tool Ind Co Ltd

Inventors

• Su Cheng-Wei

Classifications

• B23B2265/08

  Conical · CPC title

• B23B51/101 Primary

  Deburring tools (B23B51/103 takes precedence) · CPC title

• B23B51/103

  Deburring or chamfering tools for the ends of tubes or rods · CPC title

• B23B2251/208

  Eight cutting edges · CPC title

• B23B2251/204

  Four cutting edges · CPC title