Maschinenfabrik Berthold Hermle AGMaschinenfabrik Berthold Hermle AG

C 42 U RS 2 | Piesslinger | Automation

Piesslinger specialises in aluminium finishing.

Hermle provided support in the automation of parts manufacturing and demonstrated that different tolerances and difficult surfaces must not necessarily be a criterion for exclusion for unmanned machining.

Piesslinger is among the oldest companies in Austria. Its roots go back to a scythe forging shop founded in 1553 in Molln in Upper Austria. The family-owned business today with more than 400 em­ployees specialises in aluminium components and surface technol­ogies.

The aluminium component sector employs about 90 employees predominantly mechanically finishing aluminium as profiles and sheets. The clients are from the plumbing, medical technology, sports and audio systems sectors. "Our customers primarily come from the premium price sector – major orders include maximally 100,000 pieces per year with typical manufacturing lots being in the range of 200 to 1,000 pieces," Roland Hackl, Section Manager Aluminium Components from Piesslinger explains. He considers the broad range of manufacturing options, starting from machining via punching, bending or canting up to the following surface finishing such as grinding, polishing or brushing, powder coating or anodiz­ing as the ultimate strength of the company.

The robot cell is controlled by a master computer.


To remain competitive with machining, Piesslinger wanted to enter into the automated parts manufacturing about three years ago al­ready. "Therefore it was the objective to be able to produce specific sheet or profile parts more efficient by automation and at the same time fully utilise the new machining centre with them," Hackl ex­plains. The challenge was not only the small numbers. "It turned out to be a big difficulty in our project that we have tolerances of ± 5/10 millimetres for our extruded profiles. Still, the parts finally had to be milled precisely to the ± 1/10 millimetre. These differ­ences in tolerance had to be compensated by appropriate devices and an intelligent clamping concept," the Section Manager explains.


Hermle convinced Piesslinger by a mature concept based on stand­ard solutions: a C 42 U, automated with the RS 2 robot system. "Also decisive was the good service concept with a high availability of spares and the flexible complete solution from a single source,"Roland Hackl justifies the decision. What's more, the Piesslinger parts range optimally fits the new Hermle solution. Even so well that not only the five specified products but also further parts are already processed in the new machining centre. "Generally we can machine about 70 to 80 percent of our components with the Hermle C 42 U. Our manufacturing strategy is currently succes­sively shifting towards automation – and this is why we think al­ready about extending the system by another C 42," Hackl sais highly satisfied.


Meanwhile Piesslinger can fully utilise the machining centre supplied in March 2019 and transfer an ever increasing number of compo­nents to the new manufacturing concept. "The new system is a mile­stone for us. We were able to make a big step into the future with it and ensure automated parts production which in turn secures the future of the location," Roland Hackl finally emphasises.

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