Successful entry to finishing of wind turbines
“In 2013, we decided to enter precision machining for the wind power industry – the start of our collaboration with Starrag”, remembers Gao Wenjie, Deputy CEO of Wilson Machinery (Taixing) Co., Ltd. The extremely high requirements of shape and position tolerances could no longer be fulfilled with the existing machines. The large-dimensioned Dörries vertical lathes from Starrag provided the necessary precision and stability.
With the purchase of a Dörries vertical lathe with 4,000 mm diameter, Wilson laid the foundation for a successful development. Even after more than 10 years this machine continues to impress with high accuracy, efficiency, and reliability. “The excellent output of the Dörries machine far exceeded our expectations and supports the dynamic development in precision machining for the wind power industry and thus created a solid basis for further collaboration between Wilson and Starrag”, explained Gao Wenjie. “In 2024, when we were faced with the important decision of modernizing our machines, we immediately chose Starrag again and ordered nine machines, including Dörries vertical lathes and Heckert horizontal machining centers.”
The Dörries vertical lathes fulfill not only the strict requirements of shape and position tolerances for precision components in wind turbines, but also significantly improve the product quality and production efficiency realized by Wilson thanks to their technical strengths. The linear drive systems designed for precision and heavy-duty cutting have hydrostatic guides.
This means that vibrations can be effectively reduced. Also in the case of long-lasting, high loads, these lathes retain their high rigidity and thermal stability and ensure continuous, high-precision output. Equipped with multifunctional tool heads, combined with a multifunctional tool magazine, they enable miscellaneous machining processes such as rotating, cutting, drilling, and grinding. Compared to similar machines, the machining efficiency is increased by more than 25%, whereby lead times for important components are reduced considerably. They also come with a flexible tool supply system for quick tool change and a modern digital control system. This enables automatic machining, reduces manual interventions, and improves production efficiency. “The output of these Dörries vertical lathes is crucial for the machining of large precision components in the wind power industry”, explained Zheng Weidong, Head of the Equipment Department at Wilson Machinery (Taixing) Co., Ltd. “The excellent precision and efficiency of the Dörries vertical lathes facilitated the entry into the finishing of wind turbine system components and will also continue to drive this development forward.”
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