HIRSCHMANN REDEFINES LIGHTWEIGHT CONSTRUCTION ALUMINUM-TITANIUM SPHERICAL BEARINGS FOR AEROSPACE
This innovation redefines lightweight construction in aerospace technology: HIRSCHMANN GmbH from Baden-Württemberg, in cooperation with Austrian company Teufelberger GmbH, has introduced extremely light Tie Rods (stabilizer bars) with aluminum-titanium spherical bearings. This combination of HIRSCHMANN lightweight bearings and Teufelberger Tie-Rods, netted of high-tensile composite fibers, results in a product design offering a large weight reduction at high load capacity.
“Our innovation creates the possibility for considerable energy savings in aerospace and contributes to an improved economies of scale,” as manager Rainer Harter points out.
HIRSCHMANN is a recognized specialist in heavy-duty rod ends and spherical bearings. For more than 50 years, the company has developed and manufactured trendsetting and practical products meeting the highest industry standards. With the patent-pending aluminum-titanium spherical bearing, HIRSCHMANN has already made a breakthrough in automotive racing – a discipline where weight reduction plays a decisive role. The lightweight spherical bearings reach the same performance data as standard bearing technology, but at half the weight This innovative bearing technology is also now being successfully applied in the aerospace industry.
Lightweight Aluminum-Titanium Spherical Bearing.
Cooperation with Teufelbergeror this new application, HIRSCHMANN found the ideal partner in the Austrian company Teufelberger, delivering ultralight Tie-Rods as connecting elements between lightweight spherical bearings. For its ultralight Tie Rods, the company located in Wels, uses braiding technology, offering great variance in geometry for components with high requirements along the longitudinal axis. After processing, the preform is injected with resin and the internal core is suspended in a water quench, so that only the hollow inside and extremely resistant stabilizer bar are remaining.
The end pieces for the aluminum-titanium bearings are combined with patented T-IGEL® connections made by Teufelberger, designed in 3D print technology and manufactured in design-compliant titanium. This allows for a load-dependent product design. A special program calculates the individual load profile and the necessary support for the largest forces, resulting in the lowest required material thickness. That is followed by additional postprocessing of the bearing seat to reach exact fitting. Then the spherical bearings, with the HIRSCHMANN defined torque and tilting effect, are pressed into a swaged socket in the outer part and rolled in to guarantee axial protection (lock). To permanently secure the bearing and to guarantee proper functioning, a seal is applied.
The Tie Rods transfer movements and forces optimally, so the gimbal-mounted suspension in aircraft construction offers numerous possible applications for the new HIRSCHMANN products, including in plane doors, to fasten cabin equipment, walls, and luggage racks. The Tie Rods with lightweight spherical bearings are available in variable dimensions for various applications. “At the ILA trade fair, we presented an innovation that gives aerospace developers the possibility to reduce weight under high stability criteria,” underlines Rainer Harter.
Ultra lightweight Tie-Rod