Browse Prior Art Database

Double Clinch Lock Components for Ferrous to Nonferrous Assemblies

IP.com Disclosure Number: IPCOM000089318D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Goodrich, RA: AUTHOR [+2]

Abstract

A low pressure clinch provides a high strength joint attained by the use of welding current to aid in the metal upset and clinch. The joint is highly resistive to pull out, push out and torque loading, and is effective for the joining of ferrous and nonferrous elements.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 87% of the total text.

Page 1 of 2

Double Clinch Lock Components for Ferrous to Nonferrous Assemblies

A low pressure clinch provides a high strength joint attained by the use of welding current to aid in the metal upset and clinch. The joint is highly resistive to pull out, push out and torque loading, and is effective for the joining of ferrous and nonferrous elements.

As seen in Fig. 1 a stud 5 is to be secured to a plate member 6 by compressing the elements between a contact pusher 7 and a guide bushing 8. Pusher 7 and guide 8 also serve as electrodes for the application of weld current. The plate member 6 is provided with a prepared opening 9 in which the shank 10 of stud 5 is received. Stud 5 has a generally cylindrical or threaded distal end portion 11 and a tapered portion 12 extending from the head 13 to the cylindrical portion. A ring tang 14 extends from the peripheral margin of head 13 with a generally cylindrical inner surface 16 and a tapered or frusto-conical exterior surface 17.

Fig. 2 shows stud 5 partially inserted into plate 6 with the ring tang 14 piercing the plate surface and the plate member material adjoining the aperture 9 beginning to upset. This action is in response to the compression between pusher 7 and guide bushing 8 and the application of weld current through the elements being joined. The partial section of Fig. 3 illustrates the completed joint wherein the plate material has been upset to closely conform to the tapered portion 12 of stud 5, and the combined insert...