Deutsches Zentrum Fuer Luft-und Raumfahrt E.v

Deutsche Forschungsanstalt Fuer Luft- Und Raumfahrt E.v.

Hendrik Weihs

Richard Kochendoerfer

Frank Kocian

Peter Winkelmann

Felix Ruehle

Detlef Haensel

Herrmann Hald

A method for transmitting forces between two joined parts. A connection element is introduced into two corresponding openings in the two joined parts. A first undercut on a connection head of the connection element extends obliquely to the direction of force. The first undercut is applied to a first contact surface, which is operatively connected to the first joined part. A connection shank, starting from a connection head with an enlarged portion having a second undercut facing the first undercut, is introduced into the opening in the second joined part. The connection shank, with a longitudinal slot starting from the end surface at the shank end of the connection element, running in the direction of force and extending to the height of the enlarged portion, is compressed in the region of the enlarged portion. After the introduction, a spreading element is introduced into a receiving portion of the connection element. The receiving portion starts from an end surface of the connection element, runs in the direction of force, and extends to the height of the longitudinal slot. The connection shank is introduced into the opening in the second joined part so that, before the introduction of the spreading element into the receiving portion, the connection shank spreads again and rests with the second undercut in surface contact on a second contact surface which is operatively connected to the second joined part.

Method and device for transmission of forces between two joined parts

In order to provide a joint connection, comprising a first joining piece with a first contact surface and a passage opening onto the first contact surface, and a second joining piece with a second contact surface and a recess opening onto the second contact surface, said first joining piece and second joining piece standing in a joining position in relation to one another, in which the contact surfaces abut one another and the passage and the recess together form a cavity, for joining pieces made from brittle materials it is proposed that a positive-locking element is disposed in the cavity; that the positive-locking element comprises a plastically inserted molding, which is cured in the cavity and abuts the joining pieces over their surface; that together with the first joining piece and the second joining piece, the positive-locking element forms a positive locking which secures the first joining piece and the second joining piece relative to one another in at least one direction of stress along the contact surfaces; and that the positive-locking element has undercuts which together with the first joining piece and the second joining piece form a positive locking which secures the positive-locking element in the cavity.

Device for the production of a joint connection

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Riederich, Germany

Hendrik Weihs