Nut position sensing weld point
OwnerDarrell Shermaninventor
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Abstract
Provided herein is a weld point electrode useful for welding weld nuts to various selected substrates. Through use of the device of this invention, a process for attaching weld nuts to a substrate may be made more efficient than such processes according to the
Claims21
An electrode construction useful in the welding of weld nuts to substrates which comprises:
- a) an electrically conductive core portion having a bottom surface which is adapted to contact a weld nut;
- and
- b) a non-conductive outer sleeve portion,
- wherein said outer sleeve portion is coextensively disposed about the conductive core portion along the length dimension of said core portion, and wherein said outer sleeve portion extends beyond said bottom surface of said core portion an effective distance for precluding the bottom surface of the conductive core to come into contact with a surface upon which said electrode construction is caused to be contacted.
A weld point electrode which comprises:
- a) a cylindrically-shaped metallic core portion, said core portion including a base portion having a bottom portion comprising a flat surface, and a tower portion having a top portion;
- b) a non-conductive outer sleeve portion in the form of a cylindrical shell having an inner diameter, an outer diameter, an upper portion, and a flat lower portion wherein said outer sleeve portion is coextensively disposed about a predominant amount of said base portion along its length dimension and wherein said lower portion of said sleeve portion extends beyond the flat surface portion of said bottom portion of said core portion, and further comprising a bevel annularly disposed about the inner diameter portion of the lower portion of said sleeve portion,
- wherein said top portion of said tower portion includes a first hole drilled in its center along the centerline of said core portion, and wherein said flat surface portion includes a second hole drilled at its center along the centerline of said core portion, said first hole and said second hole not drilled through to one another.
In a process for affixing a weld nut to a metallic substrate using an upper electrode designed to contact the top surface of a weld nut that is in contact with said substrate, wherein the improvement comprises providing said upper electrode with an outer sleeve portion that is effectively configured to preclude the passage of electrical current through any path other than through the weld nut itself.
Dependencies are inferred from the claim text.