A device and methods are provided for deep rolling. In one embodiment, a machine includes a deep rolling tool having a plurality of rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress
A device and methods are provided for deep rolling. In one embodiment, a machine includes a deep rolling tool having a plurality of rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. The machine may also include a positioning element coupled to the deep rolling tool, wherein the positioning element is configured to position the deep rolling tool and apply the deep rolling tool to an article.
대표청구항▼
1. A machine, comprising: a deep rolling tool comprising; a flexible first fork arm and a flexible second fork arm each extending outwardly from a base section;a first rolling element rotatably secured to a distal end of the flexible first fork arm;a second rolling element rotatably secured to a dis
1. A machine, comprising: a deep rolling tool comprising; a flexible first fork arm and a flexible second fork arm each extending outwardly from a base section;a first rolling element rotatably secured to a distal end of the flexible first fork arm;a second rolling element rotatably secured to a distal end of the flexible second fork arm, wherein the flexible first fork arm and the flexible second fork arm are configured to locate the first rolling element and the second rolling element in a facing spaced relationship with respect to each other and wherein the flexible first fork arm and the flexible second fork arm extend outwardly from the base section without a pivot such that movement of the distal end of the flexible first fork arm with respect to the distal end of the flexible second fork arm is dependent upon a flexural stiffness of the flexible first fork arm and a flexural stiffness of the flexible second fork arm; anda positioning element operatively coupled to the deep rolling tool, wherein the positioning element is configured to apply the first rolling element and the second rolling element to opposite sides of an article. 2. The machine of claim 1, wherein the first rolling element and the second rolling element are crowned rollers. 3. The machine of claim 1, wherein the machine is a 5-axis machine and the positioning element is configured to position the deep rolling tool in three dimensions, and rotate the tool in two dimensions. 4. The machine of claim 1, wherein a block of the deep rolling tool is mounted to the positioning element and the flexible first fork arm and the flexible second fork arm are perpendicularly arranged with respect to the positioning element and wherein the first rolling element rotates about a first axis and the second rolling element rotates about a second axis, the first axis being parallel to the second axis. 5. The machine of claim 1, wherein the deep rolling tool may be rotated along a central axis of the deep rolling tool by the positioning element. 6. The machine of claim 1, wherein the positioning element is configured to move the deep rolling tool in an alternating motion from a retracted position to an extended position with respect to the positioning element. 7. The machine of claim 1, wherein the positioning element is configured to move the deep rolling tool in a linear path. 8. The machine of claim 1, wherein the first rolling element and the second rolling element are crowned rollers each having a minor radius for contacting the articles, and a major diameter adapted to provide a load capacity. 9. The machine of claim 1, wherein the article is at least one of a turbine blade, a compressor blade, a fan blade, a bladed disk, a bladed element and a metal object. 10. The machine of claim 1, wherein the deep rolling tool is configured to apply a compressive stress to the opposite sides of the article. 11. A machine, comprising: a deep rolling tool having a plurality of rolling elements rotatably secured thereto, wherein the plurality of rolling elements are configured to define an opening therebetween at the distal end of a pair of flexible fork arms of the deep rolling tool and wherein the pair of flexible fork arms are secured to the deep rolling tool without a pivot such that movement of the distal end of the pair of flexible fork arms with respect to each other is dependent upon a flexural stiffness of each of the pair of flexible fork arms, and wherein the plurality of rolling elements are configured to apply a compressive stress to an articles located in the opening; anda positioning element coupled to the deep rolling tool, wherein the positioning element is configured to position and apply the plurality of rolling elements to surfaces of a bladed element by locating the bladed element in the opening. 12. The machine of claim 11, wherein the plurality of rolling elements apply a compressive stress to the bladed element without an actuator applying a force to either one of the pair of flexible fork arms in order to relocate the pair of flexible fork arms with respect to each other. 13. The machine of claim 11, wherein the machine is a 5-axis machine and the positioning element is configured to position the deep rolling tool in three dimensions, and rotate the tool in two dimensions. 14. The machine of claim 11, wherein a block of the deep rolling tool is mounted to the positioning element and the pair of flexible fork arms are perpendicularly arranged with respect to the positioning element and wherein a portion of the plurality of rolling elements are located on one side of the opening for rotation about a first axis and another portion of the plurality of rolling elements are located on another side of the opening opposite the one side of the opening for rotation about a second axis, the first axis being parallel to the second axis. 15. The machine of claim 11, wherein the deep rolling tool is rotated along a central axis of the deep rolling tool by the positioning element. 16. The machine of claim 11, wherein the positioning element is configured to move the deep rolling tool in an alternating motion from a retracted position to an extended position with respect to the positioning element. 17. The machine of claim 11, wherein the positioning element is configured to move the deep rolling tool in a linear path. 18. The machine of claim 11, wherein the plurality of rolling elements are crowned rollers each having a minor radius for contacting a surface of the bladed element when it is located in the opening and a major diameter providing a load capacity. 19. The machine of claim 11, wherein the bladed element is at least one of a turbine blade, a compressor blade, a fan blade, a bladed disk and a metal object. 20. The machine of claim 11, wherein the deep rolling tool is configured to apply a compressive stress to opposite sides of the bladed element when it is located in the opening.
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