Friction welding vibration damping

• US 9,884,388 B2
• Filed: 03/08/2016
• Issued: 02/06/2018
• Est. Priority Date: 04/01/2015
• Status: Active Grant

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: Sweeting, Tony Jason
• Primary Examiner(s): STONER, KILEY SHAWN
• Application Number:
  US15/063,830
• Publication Number:
  US 20160288247A1
• Time in Patent Office: 700 Days
• Field of Search: 228 21- 23, 2281121-1145, 228 443, 156 735
• CPC Class Codes: B23K 20/12 the heat being generated by friction; Friction welding
• CPC Class Codes: B23K 20/26 Auxiliary equipment
• CPC Class Codes: B23K 37/04 for holding or positioning work

Abstract

A friction welding tool having a main body and a first clamp for gripping a first weld component and a second clamp for gripping a second weld component, at least one of the clamps being movable with respect to the other to effect friction welding of the respective weld components. The friction welding tool includes a vibration damper arrangeable to absorb vibrations of the first weld component during the friction welding. The friction welding tool includes an anchor element arranged to couple the damper to the main body of the friction welding tool to transfer absorbed vibrations to the main body.

Claims

1. A friction welding tool having a main body and:

a first clamp for gripping a first weld component and a second clamp for gripping a second weld component, at least one of the clamps being movable with respect to the other to effect friction welding of the respective weld components;

a vibration damper arranged to absorb vibrations of the first weld component during the friction welding; and

an anchor element arranged to couple the damper to the main body of the friction welding tool to transfer absorbed vibrations to the main body, wherein the anchor element is arranged to be under tension between the damper and the main body.

2. The friction welding tool according to claim 1, wherein the damper is arranged such that the first respective weld component is mountable thereon.

3. The friction welding tool according to claim 1, wherein the first weld component includes a hollow body, wherein the first clamp is arranged to grip the first weld component by at least a portion of an outer surface of the body, and wherein the damper is arranged in the hollow body of the first weld component in fitting engagement with at least a portion of an inner surface of the body.

4. The friction welding tool according to claim 3, wherein the dimensions of the damper (24) are variable to allow modification of the fitting engagement of the damper with the at least a portion of the inner surface.

5. The friction welding tool according to claim 3, wherein the damper includes a damper body and an outer sheath for engagement with the at least a portion of the inner surface of the first weld component.

6. The friction welding tool according to claim 5, wherein the damper body is formed of a plastic, and/or the sheath is formed of rubber.

7. The friction welding tool according to claim 3, wherein the first clamp and the vibration damper are configured to cooperate to grip radially therebetween the first weld component.

8. The friction welding tool according to claim 1, wherein the anchor element is attached to the main body and to the damper by respective attachment means, wherein at least one of the attachment means is adjustable to vary the tension in the anchor element.

9. The friction welding tool according to claim 1, wherein the anchor element is detachably attached to the damper.

10. The friction welding tool according to claim 1, wherein the anchor element is formed of metal.

11. The friction welding tool according to claim 1, wherein the second clamp is rotatable relative to the first clamp.

12. The friction welding tool according to claim 1, further comprising a further damper arranged to absorb vibrations of the second weld component during the friction welding;

and a further anchor element is arranged to couple the further damper to the main body of the friction welding tool to transfer the absorbed vibrations to the main body.

13. The friction welding tool according to claim 12, wherein the main body includes a rotatable spindle for rotating the second clamp, and the further anchor couples the further damper to the spindle.

14. The friction welding tool according to claim 1, wherein the friction welding tool is an inertia welding tool.