润滑科技信息平台

Joining workpieces via additive friction stir deposition

专利摘要

A method and apparatus for joining workpieces is described. The apparatus comprises a clamp configured to restrain a first workpiece against a second workpiece and an additive friction stir deposition (AFSD) machine comprising a spindle. The first workpiece is clamped to the second workpiece, and feedstock material is deposited, via rotation of the spindle, into an aperture extending through one or both of the first workpiece and the second workpiece. The deposited feedstock material forms a weld nugget that joins the first workpiece to the second workpiece. ......

基本信息

专利类型:
发明专利
申请/专利号:
US16/684316
申请日期:
2019-11-14
专利申请人:
THE BOEING COMPANY
分类号:
B23K20/12
发明/设计人:
RODRIGUEZ, ROGIE I. ， ZAMORANO SENDEROS, BRUNO
权利要求: 1. A method of joining workpieces, the method comprising: positioning a workpiece assembly relative to a spindle of an additive friction stir deposition (AFSD) machine, the workpiece assembly comprising a first workpiece and a second workpiece; clamping the first workpiece to the second workpiece; and depositing, via at least rotation of the spindle, feedstock material from the AFSD machine into an aperture extending through one or both of the first workpiece and the second workpiece, the feedstock material deposited into the aperture forming a weld nugget that joins the first workpiece to the second workpiece.2. The method of claim 1, further comprising confining deposition of the feedstock material to substantially within the first workpiece and the second workpiece.3. The method of claim 2, wherein confining deposition of the feedstock material to substantially within the first workpiece and the second workpiece comprises contacting the first workpiece with a cylinder at least partially surrounding the spindle.4. The method of claim 2, wherein confining deposition of the feedstock material to substantially within the first workpiece and the second workpiece comprises contacting the first workpiece with a rectangular component having a cylindrical hole.5. The method of claim 2, wherein confining deposition of the feedstock material to substantially within the first workpiece and the second workpiece comprises contacting the second workpiece with a static backing surface.6. The method of claim 2, wherein confining deposition of the feedstock material to substantially within the first workpiece and the second workpiece comprises contacting the second workpiece with an anvil.7. An apparatus, comprising: a clamp configured to restrain a first workpiece against a second workpiece; and an additive friction stir deposition (AFSD) machine comprising a spindle, the AFSD machine configured to deposit, via at least rotation of the spindle, feedstock material into an aperture extending through one or both of the first workpiece and the second workpiece, the feedstock material deposited into the aperture forming a weld nugget that joins the first workpiece to the second workpiece.8. The apparatus of claim 7, wherein the clamp comprises a machine-side element contacting the first workpiece and an opposite-side element contacting the second workpiece.9. The apparatus of claim 8, wherein the machine-side element comprises a cylinder at least partially surrounding the AFSD machine.10. The apparatus of claim 9, wherein the cylinder is in contact with the spindle.11. The apparatus of claim 8, wherein the machine-side element comprises a rectangular component having a cylindrical hole.12. The apparatus of claim 8, wherein the opposite-side element comprises a static backing surface.13. The apparatus of claim 8, wherein the opposite-side element comprises an anvil.14. An apparatus, comprising: a clamp configured to restrain a first workpiece against a second workpiece to form a workpiece assembly, the clamp comprising a machine-side element contacting the first workpiece and an opposite-side element contacting the second workpiece; and an additive friction stir deposition (AFSD) machine comprising a spindle, the AFSD machine configured to deposit, via at least rotation of the spindle, feedstock material into a preformed aperture extending through one or both of the first workpiece and the second workpiece of the workpiece assembly, the feedstock material deposited into the aperture forming a lap joint between the first workpiece and the second workpiece.15. The apparatus of claim 14, wherein the clamp is further configured to confine deposition of the feedstock material to substantially within the first workpiece and the second workpiece.16. The apparatus of claim 14, wherein the machine-side element comprises a cylinder at least partially surrounding the AFSD machine.17. The apparatus of claim 16, wherein the cylinder is in contact with the spindle.18. The apparatus of claim 14, wherein the machine-side element comprises a rectangular component having a cylindrical hole.19. The apparatus of claim 14, wherein the opposite-side element comprises a static backing surface.20. The apparatus of claim 14, wherein the opposite-side element comprises an anvil.