Joining (manufacturing technology)
|Brief description:||* DIN 8593-0: 2003-09 general; Classification, subdivision, terms
Add in the manufacturing technology 8580, the fourth of the six DIN manufacturing major groups . When joining, two or more solid bodies, the joining parts , with a geometrically defined shape are permanently connected (joined) . In some joining processes, an "informal material" is also used (a material whose shape is not defined) . This includes, for example, glue .
The individual process groups are specified in more detail in DIN 8593. The most important include the riveting , clinching (clinching) and screws , as well as using a shapeless excipient the welding , soldering and bonding .
By joining, the cohesion between separate workpieces is locally - i.e. H. at the joints - created or increased. The connection can be of a fixed or movable type. The operating forces that occur are transmitted via the active surfaces of the connection.
- Relationship to coating
The workpieces to be joined have a geometrically defined shape. An informal substance can be used as an auxiliary material. These include, for example, liquid solder, welding filler materials (from which the weld seam is formed after solidification) and adhesive. If only a single workpiece is covered flat with shapeless material, this is called coating .
- Classification options
The connections can be releasable, non-releasable or conditionally releasable.
- Non-detachable connections are welded connections. They can only be solved by destroying the components.
- Screw connections, for example, can be released
- Riveted connections are conditionally detachable. The rivets must be destroyed to separate, but not the joined components. Soldered components can usually also be unsoldered.
Another division is the type of connection. (Details are on connection technology )
- Cohesive connections create a connection in the material itself. This includes welded and soldered connections
- Positive connections use the shape of the components to connect them. These include hooks and eyes.
- Non-positive connections are held together by frictional forces.
Classification according to DIN 8593
DIN 8593 divides joining into nine groups in which the various joining processes are summarized.
- Assembling : Among other things, inserting, hanging and sliding into one another
- Filling : filling cavities with materials. For example, impregnation.
- Pressing in and on : screwing, nailing or press connections with interference fit
- Joining by primary forming : Uses various primary forming processes for joining, especially casting
- Joining by forming : Uses various processes of forming technology for joining. Examples are flanging, folding, bending and riveting.
- Joining by welding : joining under the influence of heat and / or pressure. The workpieces are melted at the joints.
- Joining by soldering : Joining by melting solder. The joints are heated, but not melted.
- Gluing : With glue
- Textile joining
- Klaus-Jürgen Matthes, Frank Riedel (Ed.): Joining technology. Overview - Soldering - Gluing - Joining by forming . Fachbuchverlag, Leipzig 2003, ISBN 978-3-446-22133-8 .
- G. Kötting: Joining technology . 1 Characterization and classification of joining processes, p. 1-1-1-7 .
- Klaus Feldmann, Volker Schöppner, Günter Spur: Manual joining, handling, assembling , Hanser, Munich, 2014.
- Fritz, Schulze: Manufacturing Technology , 11th Edition, p. 125.
- Skolaut: Maschinenbau , Springer, 2014, pp. 1058, 1062.