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A method for fabricating upright pins in a base plate, in a mutually orthogonal relationship with respect to the base plate. A first set of holes is made in a base plate at locations needed within an apparatus such as a tape cartridge. The holes are slightly oversize with respect to pins to be perma

A method for fabricating upright pins in a base plate, in a mutually orthogonal relationship with respect to the base plate. A first set of holes is made in a base plate at locations needed within an apparatus such as a tape cartridge. The holes are slightly oversize with respect to pins to be permanently seated therein. A second set of holes, a mirror image of the first set of holes, is made in a pin holder plate, except that the holes are not oversize. The second set of holes is adapted to hold pins in frictional contact therein. Once the pins have been disposed in the second set of holes, the holder plate is made to overlay the base plate with the outwardly facing ends of the pins brought into flush alignment with the back side of the base plate by projection through the base plate, but without the pins touching the base plate. The bottoms of the pins are now welded in place by means of a high pulse-power welding apparatus such as a laser working on the back side of the base plate. A programmed mechanical work holder may move a laser relative to pin locations and melt pins and adjacent rims of holes thereby fusing the two together, permanently attaching the pins to the base plate without distortion of either. The holder plate is then removed.

대표청구항 ▼

A method for constructing upright pins in a base plate comprising, making a first set of holes orthogonal to the plane of a planar base plate, said holes being slightly oversize with respect to pins to be seated therein, the holes extending completely through said base plate, said base plate having

A method for constructing upright pins in a base plate comprising, making a first set of holes orthogonal to the plane of a planar base plate, said holes being slightly oversize with respect to pins to be seated therein, the holes extending completely through said base plate, said base plate having first and second opposed major surfaces, placing a plurality of pins to be seated in said first set of holes in light frictional engagement with a second set of holes in a holder plate, said second set of holes being a positional mirror image of the first set of holes, with free ends of said pins projecting from the holder plate in an upright manner, bringing the holder plate into close overlaying proximity to the base plate with free ends of said pins extending from the holder plate into said first set of holes from the first major surface side of the base plate so that the pins are flush with the second major surface side of the base plate, welding the pins into their respective holes from the second major surface side of the plate with a welding apparatus, and freeing said pins from said holder plate so that the pins are supported solely by said base plate.