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Has for mounting thread-forming screws in plastic, wood or metal, especially aluminum diecast Desoutter the new "Koala" bolting developed. In order to troubleshoot, which in the broadest sense to do with excessive tolerances in Screwless, in holes or in the material. Moreover the method is suitable for the assembly of parts of different materials.
"Such changes often bolting the Einschraubwiderstand during installation, so that the set off screwing with traditional programming to early or too late," says Managing Director Jürgen Göbel. The result are projecting to deep recessed or even broken off screw. "The Koala procedures such errors significantly reduced," he promises. Threaded fasteners would reliably mounted in all materials. Above all, the method is also suitable for the assembly of several components from different materials.
The Desoutter from Maintal looks priority for the new process applications in the electronics, medical, white and brown goods, as well as automotive suppliers. But could find even with window manufacturers, lighting manufacturers in the wood and furniture industry, RV manufacturers, foundries with parts and assemblies in the plastics industry are plenty of applications, it said. The method is also suitable for all users, the processes (such as threading, drilling core holes) want to save.
Conventional bolting often reach their limits
With the traditional control over the torque and / or angle of rotation you get high tolerances in the components and the resulting, highly fluctuating friction forces at little or Furch says Product Manager Stefanie Hess. "This of course prevents repeatable and precise fittings." Although going for the classic method always been attracted to the same torque, and it may happen that survive some screws and other abreiße the head. "That means at least a lot of rework," says Hess, "because the worker must take a new screw and tighten again." In the worse case is the component to be mounted to take out of production and should be treated as Committee. And even if the screws "good" would look like, the clamping forces in the joints often fluctuated greatly - or perhaps were not even present.
Headrest recognized - and turned further defined
Koala with now each screw is inserted exactly. The acronym stands for "head contact detection" of the screw. To recognize the headrest, then the electronically controlled screwing have a transducer and the control can be programmed accordingly. The program then analyzes during the assembly process and the tightening graph is a mathematical algorithm to the moment of the head support. From this time, the screw is rotated further as required by a certain angle of rotation or tightened to a defined torque. "Easy, time-saving and cost-effective it does not work," says Stefanie Hess. Koala with constant and repeatable glands were obtained. Although scatter in this process the more torque - which experts often surprise, says the expert. Nevertheless, the clamping force will be introduced much more constant and precise, the fitting result is so much better.
Hand and Spindles with torques of up 0,2 2000 Nm
The Koala process could be done with the controls and the CVIR CVIL series of the manufacturer. As screwdrivers are various rod, angle and Spindles are available. Including the ERS series for torques of up 0,2 12 Nm (together with the CVIR-control). For higher torques to 2000 Nm are the screwdrivers the ER series and the mandrels of EME Series. These two are controlled by the CVIL.