Retrofit: large boring machine from Schuler Pressen

Dörries Scharmann retrofit 30 year old large boring machine, high-quality electronics, new table saddle, modified drive concept complete the renovated components, technical and qualitative benefits, half economic investment, maximal 60 µm variation der x-axis over 10 m length.

Retrofit: large boring machine from Schuler Pressen

Components produced on the Wotan Rapid 6 large boring machine must processed with high precision.

Schuler and Dörries Scharmann have worked together to resolve some serious issues. The Swiss Starrag Group company and the mechanical maintenance department at the Schuler plant at Weingarten in Swabia subjected an almost 30 year old Wotan Rapid 6 large boring machine to a fundamental Retrofit.

„The intensive discussions with engineers from Dörries Scharmann were worthwhile, as the extensive tuning measures gave us significant added value“, said a delighted Alexander Horn, the head of maintenance, factory planning and property at Schuler Pressen GmbH’s Weingarten plant. The mechanical system is as good as new, even though the old renovated components are still in use. It is topped off by the new state-of-the-art electronics and intelligence.

Dörries Scharmann Technologie GmbH (DST) from Mönchengladbach has had excellent business relationships with numerous companies from the Schuler Group for years. Holmer Thomas from DST Project Engineering said: „We carried out the retrofit, because as the machine manufacturer we have all the documentation for the machine and offer a huge amount of know-how in this area.“ On the Wotan Rapid 6 large boring machine (constructed 1987), the largest machine in the Weingarten plant, there was an urgent need for strategic action due to deteriorating quality. „It was only thanks to our employees‘ resourcefulness that we were able to continue producing parts in the required quality“, Horn recalls. „But then we got the green light to go ahead with the retrofitting.“

The requirements in the specification were demanding because the components produced on the machine have to be processed with extreme precision. The maximum variation over the entire length of 10 metres (in the X-axis) is just 60 micrometer after the retrofit. Schuler and DST modified the Wotan machine at numerous trouble spots from an operator perspective. For example, the large boring machine was given a completely new table saddle with a modified drive concept. Previously, a double pinion drive was used, but it was only powered on one side. The Wotan 2.0 now contains a double pinion drive with two electronically tensioned drives. Horn says: „It was a challenge, as we had to deal with a totally new table saddle construction.“

Horn’s praise for the joint project carries significant weight for two reasons: On the one hand, the plant itself has many years‘ experience in machine tool construction, and on the other it is also very active and experienced when it comes to retrofitting. Horn says: „We are currently constructing a retrofit transfer system for a large press for a well-known German car manufacturer.“

PI 02914 = ca. 2.960 Zeichen
For more informations: http://www.starrag.com
Pictures: Dörries Scharmann/Ralf Baumgarten
Bildquelle:kein externes Copyright

Starrag Group is a global technology leader in manufacturing high-precision machine tools for milling, turning, boring and grinding of small, medium-sized and larger workpieces of metallic and composite materials.
Our customers are primarily internationally active companies in the Aerospace, Transport, Industrial and Energy sectors. In addition to its portfolio of machine tools, Starrag Group provides integrated technology and maintenance services that significantly enhance customer productivity.
Starrag Group products are marketed under the following strategic brands: Berthiez, Bumotec, Dörries, Droop+Rein, Heckert, Scharmann, SIP, Starrag, TTL, WMW. Headquartered in Rorschacherberg/Switzerland, the Starrag Group operates manufacturing plants in Switzerland, Germany, France, the UK and India and has established a network of sales and services subsidiares in numerous other countries. Starrag Group is listed on the SIX Swiss Exchange
(Symbol: STGN).

Dörries Scharmann Technologie GmbH
Dipl.-Ing. Michael Schedler
Hugo-Junkers-Straße 12-32
D-41236 Mönchengladbach
+49 (0) 2166 454 0
info@starrag.com
http://www.starrag.com

rgt redaktionsbüro gerd trommer
Gerd Trommer
Johannishofweg 7
D-64579 Gernsheim
+49 (0) 6258-932030
presse@rgt-gg.de
http://www.rgt-gg.de