Internally grooved components

Patent metadata

Field	Value
Publication number	US-9869341-B2
Application number	US-201314401212-A
Country	US
Kind code	B2
Filing date	May 15, 2013
Priority date	May 15, 2012
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A method is disclosed of manufacture of a component ( 9 ) with an internal groove ( 2,3 ) comprising: providing a tubular first part ( 1 ) with an external groove, bonding or forming a second part ( 8 ) on the first part to at least partly cover the external groove, and removing material from the first part to open the external groove to an interior cavity of the component.

First claim

The invention claimed is:

1. A method of manufacture of a component with an internal groove comprising:
providing a first part with an external groove, bonding or forming a second part on the first part to at least partly cover the external groove, and removing material from the first part to open the external groove to an interior cavity of the component.

2. The method of claim 1 , further comprising substantially filling the external groove on a first part with a filler, and removing the filler from the groove.

3. The method of claim 2 , wherein filling the groove with a filler comprises first coating the groove and filler with a release agent.

4. The method of claim 2 , wherein the filler comprises the same material as the first part.

5. The method of claim 2 , wherein the filler is removed by dissolving or melting.

6. The method of claim 5 , wherein the filler is removed prior to removing material from the first part to open the groove to the interior cavity.

7. The method of claim 1 , the method comprising forming a pair of external grooves on the first part, the external grooves defining a key portion therebetween, and wherein the step of removing material from the first part opens both of the external grooves to the interior cavity of the component, thereby freeing the key portion.

8. The method of claim 7 , wherein the method comprises filling the external grooves with a shim material.

9. The method of claim 1 , wherein the method comprises forming the first part by forming or bonding a composite element onto a tubular component.

10. The method of claim 1 , wherein removing material from the first part enlarges or forms the interior cavity of the component.

11. The method of claim 1 , wherein removing material from the first part splits the first part into a plurality of elements.

12. The method of claim 1 , wherein the walls of the groove are defined by adjacent radial protrusions.

13. The method of claim 1 , wherein the second part comprises a fibre reinforced composite.

Assignees

• Crompton Technology Group Ltd

Inventors

• Hyson Graeme

Classifications

• B29C66/5221

  for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other · CPC title

• F16C3/00 Primary

  Shafts (flexible shafts F16C1/00; marine propeller shafts, paddle wheel shafts B63H23/34); Axles; Cranks; Eccentrics · CPC title

• B29C2793/0036

  Slitting · CPC title

• F16C3/03

  telescopic (axially displaceable couplings F16D3/06) · CPC title

• B29C2793/009

  after shaping · CPC title