Portable frictional welding device
AssigneeAgency of Industrial Science and Technology
InventorsYoshio Tasaki, Noboru Nakayama, Hiroshi Kajihara
Life of this patent
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Abstract
Disclosed herein is a portable frictional welding device whereby union of a metallic part with a given structure is accomplished by fastening said metallic part to the rotary shaft of the device supported slidably in the axial direction thereof, operating the rotary shaft so as to rotate the metallic part and at the same time pressing it against the structure and, when the point therebetween has assumed a state of fusion, stopping the rotation of the rotary shaft and simultaneously increasing the thrust being applied to said structure.
Claims9
A portable frictional welding device for welding an object which comprises:
- a casing;
- a rotary shaft disposed within said casing;
- means provided at the lower portion of said rotary shaft for grasping a metallic part to be subjected to welding;
- a motor for rotating said rotary shaft;
- a slidable cylindrical member provided with a spiral groove on the outer surface thereof for freely rotatably supporting said rotary shaft in the axial direction of said rotary shaft;
- a sleeve provided with a matching spiral groove on the inner surface thereof and with a worm wheel on the outer surface thereof, and fitted to said cylindrical member to form a spiral path by the matched spiral grooves in which path a plurality of balls are inserted;
- a torque motor for rotating said worm wheel for thereby sliding said cylindrical member in the axial direction of said rotary shaft;
- and,
- fixing means provided on the bottom surface of said casing for positionally fixing said device with respect to the object to which said metallic part is to be welded.
Dependencies are inferred from the claim text.