Forming tool for leading edge of turbine blades

Patent metadata

Field	Value
Publication number	US-10173273-B2
Application number	US-201515032000-A
Country	US
Kind code	B2
Filing date	Jan 22, 2015
Priority date	Jan 24, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A forming tool for forming leading edges of turbine blades is disclosed. In various embodiments, a forming tool may comprise a cylindrically-shaped body having a notch around the circumference of the cylindrically-shaped body. The notch may be positioned perpendicularly to a center axis of the cylindrically-shaped body. Further, the notch may have a notch contour with an upper notch contour and a lower notch contour, and where the notch contour is a relief of a selected turbine blade leading edge. The forming tool may be a grinding tool or a cutting tool. Moreover, a forming process may comprise forming, by a forming tool, a first portion of a turbine blade leading edge with a rough edge result, and forming, by a milling cutter, a second portion of the turbine blade leading edge with a rough edge result.

First claim

What is claimed is:

1. A forming tool comprising:
a cylindrically-shaped body having a notch spanning a circumference of the cylindrically-shaped body, wherein the notch is positioned perpendicular to a center axis of the cylindrically-shaped body,
wherein the notch has a notch contour with an upper notch contour and a lower notch contour, and wherein the notch contour is a relief of a selected turbine blade leading edge,
wherein the forming tool is a cutting forming tool comprising at least four flutes at an interior point of the notch.

2. The forming tool of claim 1 , wherein the forming tool is a grinding forming tool.

3. The forming tool of claim 1 , wherein the forming tool is made of a carbide material.

4. The forming tool of claim 1 , wherein the forming tool is made of diamond.

5. The forming tool of claim 1 , further comprising at least one of a diamond coating, a nitride coating, and a TiN coating on a surface of the notch.

6. The farming tool of claim 1 , wherein the upper notch contour is the same as the lower notch contour.

7. The forming tool of claim 1 , wherein the upper notch contour is different from the lower notch contour.

8. The forming tool of claim 1 , further comprising a second notch around the circumference of the cylindrically-shaped body, wherein the second notch is positioned perpendicularly to the center axis of the cylindrically-shaped body, and wherein the second notch has a second notch contour.

9. The forming tool of claim 8 , wherein the second notch contour is different from the notch contour.

10. The forming tool of claim 8 , wherein the second notch contour is the same as the notch contour.

Assignees

• United Technologies Corp

Inventors

• Fromerth Eric
• Wright Daniel J
• Wu Chung Y

Classifications

• B23C5/10

  Shank-type cutters, i.e. with an integral shaft · CPC title

• B23P15/02

  turbine or like blades from one piece · CPC title

• B23C2224/36

  Titanium nitride · CPC title

• B24B9/00

  Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor (B24B21/00 takes precedence; for sharpening cutting edges on tools B24B3/00; removing burrs by loose abrasive material B24B31/00) · CPC title

• B24B19/14

  for grinding turbine blades, propeller blades or the like (using grinding belts B24B21/16) · CPC title