Two-stage riveting
First Claim
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1. A method for fastening two parts together, the method comprising:
- creating an initial interference fit between a fastener and at least a portion of a hole extending through the two parts by applying a first force to a head of the fastener and applying a second force to an end of the fastener while maintaining a force equilibrium between the first force, the second force, and a reactive structural force, wherein the second force is less than the first force; and
creating a final interference fit between the fastener and the hole by applying a new first force to the head of the fastener and applying a new second force to the end of the fastener while maintaining a new force equilibrium between the new first force, the new second force, and a new reactive structural force, wherein the new second force is greater than the new first force.
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Abstract
A method and apparatus for fastening two parts together. An initial interference fit may be created between a fastener and at least a portion of a hole extending through the two parts while maintaining a force equilibrium. A final interference fit may be created between the fastener and the hole, while maintaining a new force equilibrium.
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Citations
30 Claims
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1. A method for fastening two parts together, the method comprising:
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creating an initial interference fit between a fastener and at least a portion of a hole extending through the two parts by applying a first force to a head of the fastener and applying a second force to an end of the fastener while maintaining a force equilibrium between the first force, the second force, and a reactive structural force, wherein the second force is less than the first force; and creating a final interference fit between the fastener and the hole by applying a new first force to the head of the fastener and applying a new second force to the end of the fastener while maintaining a new force equilibrium between the new first force, the new second force, and a new reactive structural force, wherein the new second force is greater than the new first force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for performing a two-stage riveting process, the method comprising:
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creating an initial interference fit between a fastener and at least a portion of a hole extending through two parts using a hammer associated with a first robotic device to apply a first force to a head of the fastener and using a bucking bar associated with a second robotic device to apply a second force to an end of the fastener, while maintaining a force equilibrium between the first force, the second force, and a reactive structural force, wherein the second force is less than the first force; and creating a final interference fit between the fastener and the hole using the bucking bar to apply a new second force to the end of the fastener and using the hammer to apply a new first force to the head of the fastener, while maintaining a new force equilibrium between the new first force, the new second force, and a new reactive structural force, wherein the new second force is greater than the new first force, such that the final interference fit is substantially uniform across an interface between the two parts.
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Specification