Production Machining

DEC 2018

Production Machining - Your access to the precision machining industrial buyer.

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Page 39 of 51

Turning Thin-Walled Aerospace Parts "A good company works like a good family." Gerhard Herrmann's motto, simple and short, sums up his company's machining expertise when it comes to the production of aerospace components. Founded in 1986, Munich-based Herrmann CNC-Drehtechnik has built an excellent reputation and attained preferred supplier status in many large aerospace companies. With the demand for extremely small, complex, tightly toleranced, thin-walled precision compo- nents made of difficult-to-machine materials surging, the company is increasingly cooperating with suppliers to reinvent and improve its machining processes. By Barbara Schulz "e issue of weight savings for components plays a major role in the aviation industry," says Production Manager Klaus Wetterich. "is is often a challenge for the machinists since we must continually develop new turning methods for components as required by the thin walls of our workpieces." To produce a housing cover made of high-tensile aluminum (AlZn5.5MgCu) (EN AW 7075), Mr. Wetterich chose the Supermini and Mini tool systems from Horn. The Class 2 component housing cover is used on the landing gear of the Airbus A350. The failure of a Class 2 component would result in severe impairment of the aircraft, so parts have to meet all demands by the strin- gent aviation certification according to DIN EN 9100. The shop produces approximately 100 of these housings every year. :: Rough turning of the inner diameter is performed with a Supermini 105, which features a TH35 coated carbide grade boring bar insert. CASE IN POINT 38 PRODUCTION MACHINING :: DECEMBER 2018

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