Press and wobble rivets
Warning: Trying to access array offset on value of type bool in /is/htdocs/wp11085921_NHF5GPYV6S/dunkes/wp-content/plugins/advanced-custom-fields-pro-master/includes/api/api-template.php on line 471
Internal and external high pressure forming
Wobble and compression riveting is a non-cutting, non-detachable joining technique (cold forming). In wobble riveting, the forming force acts only on a partial surface of the workpiece, i.e. large forming operations can be achieved with a relatively low force.
The required tools can be simple in design, which means low tooling costs. Wobble and compression riveting technology can be used to produce high-quality riveted joints in both fixed and moving designs. A force-displacement control device can be integrated for quality assurance.
DUNKES supplies wobble and press riveting machines for manual operation as well as for integration into special machines.
Furthermore, we can also supply complete, automated automation solutions in rotary indexing table design as well as in workpiece carrier design.
Two-dimensional tasks are realized by means of a freely programmable cross table for different riveting heights via a freely programmable height positioning system.
If several riveting operations have to be carried out in a short time in a fixed, flat riveting grid, multi-spindle heads can be used.
Riveting forces up to 40kN are realized pneumatically, riveting forces up to 100kN are realized hydraulically.
Wobble riveting process
The tool (Döpper) rotates at a constant angle of attack around the center axis of the rivet. The rivet material is deformed axially and tangentially via line contact with simultaneous axial feed
- Short riveting times
- Relatively simple structure of the overall system
- Service friendly
- In case of wear or replacement of bearings relatively easy and possible in a short time
Rivet head shapes
The wobble and radial riveting processes allow a wide variety of rivet head shapes to be realized, even in places that are difficult to access.
A 5° inclined doppler axis is offered and supplied as standard.
For hard-to-reach places, there is a possibility to supply a 3° inclined doepper axis. This allows, for example, riveting in a deep shoulder that is close to an interfering contour.
Rivet fasteners with a longer service life are available in a “Ferro-Tic® alloy”.
