Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1994-01-27
1995-04-25
Hughes, Tom
Metal working
Method of mechanical manufacture
Assembling or joining
29521, 295221, B23P 1100, B21D 3900
Patent
active
054087350
ABSTRACT:
A series of related clinch joints as well as methods and apparatus for forming these joints are disclosed. All of the leak proof drawings are capable of being fabricated using a solid non-radially expandable die having a recessed cavity formed therein for cooperation with a corresponding punch having a solid punch projection. The clearance between the punch and the die recess are specifically sized relative to the material thickness to achieve optimum fastening characteristics. Several joint embodiments utilize variable clearance between the punch and the die to minimize strength variability resulting from changing material thickness. Alternative lance type and leak proof joints utilize a variable clearance between the punch and the die to achieve both high, shear and peel strength in a single joint design.
REFERENCES:
patent: 3359935 (1967-12-01), Rosebottom
patent: 3579809 (1971-05-01), Wolf
patent: 4208776 (1980-06-01), Schleicher
patent: 4394794 (1983-07-01), Shirey
patent: 4459735 (1984-07-01), Sawdon
patent: 4569111 (1986-02-01), Mutou
patent: 4614017 (1986-09-01), Eckold et al.
patent: 4658502 (1987-04-01), Eckold et al.
patent: 4831704 (1989-05-01), Rapp
patent: 4856316 (1989-08-01), Slasinski
patent: 5051020 (1991-09-01), Schleicher
patent: 5208974 (1993-05-01), Sawdon et al.
patent: 5259102 (1993-11-01), Obrecht
patent: 5267383 (1993-12-01), Sawdon
patent: 5315743 (1994-05-01), Schleicher
SAE Technical Paper Series, "A New Mechanical Joining Technique For Steel Compared With Spot Welding", by J. M. Sawhill, Jr. and S. E. Sawdon, 1983.
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