Friction welding methods and friction welding apparatuses
First Claim
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1. A friction welding method pressing a pair of works while rotating the pair of works relative to each other comprising:
- a friction step for generating a friction heat by pressing the pair of works while relatively rotating the pair of works; and
an upset step started before generating an approach margin at the pair of works at the friction step, restricting rotation of the pair of works relative to each other and applying an upset pressure between the pair of works.
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Abstract
One aspect of the present invention can include a friction welding method having a friction step for generating a friction heat by pressing the pair of works while relatively rotating the pair of works, and an upset step started before generating an approach margin at the pair of works at the friction step, restricting rotation of the pair of works relative to each other and applying an upset pressure between the pair of works.
28 Citations
15 Claims
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1. A friction welding method pressing a pair of works while rotating the pair of works relative to each other comprising:
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a friction step for generating a friction heat by pressing the pair of works while relatively rotating the pair of works; and an upset step started before generating an approach margin at the pair of works at the friction step, restricting rotation of the pair of works relative to each other and applying an upset pressure between the pair of works. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 13, 14)
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9. A friction welding apparatus comprising:
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a rotating apparatus capable of relatively rotating a first work and a second work; a thrust mechanism capable of feeding the first and the second works in a direction towards each other; and a controlling device;
wherein;the controlling device is capable of restricting a relative rotation between the first and the second works after a setting time after the works contact with each other, further wherein the controlling device is capable of applying an upset pressure between the first and the second works by the thrust mechanism, and the setting time is set to a time before generating an approach margin between the first and the second works. - View Dependent Claims (10, 11, 15)
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Specification