Turn-milling complex work pieces

Integration of various machining processes in one machine

Integrating different machining processes in one machine has been a major trend in the machine tool industry in recent years. Users increasingly demand turn-milling of large, complex work pieces like turbine rotors or pinion shafts. WaldrichSiegen developed the perfect solution for all complex turn-milling processes.

The successful concept of the ProfiTurn lathes can be enhanced on request by integrating a high-performance milling aggregate between the two turning tool holders. The aggregate has a performance of 50 KW and is equipped with a pivoting milling head with two CNC axes in the X and Y direction. At the same time, the headstock drive was completely reworked and equipped with a zero backlash drive in Master/Slave design controlling the C axis.

The advantage: Complex turn-milling operations in one machine set-up. Several orders prove that this concept strikes a chord with users. In 2012, WaldrichSiegen delivered a machine for work pieces weighing 35 t to the company Shenyang Blower in China. Now, another ProfiTurn for machining turbine rotors with weights of 60 t and turning diameters of 2,000 mm passed the acceptance tests at Hangzhou Turbine in China. The machine carries out turning as well as notch milling operations on the turbine rotors and completes all necessary boring operations. Hangzhou Turbine can also machine the bearing seats with an additional integrated grinding aggregate. Thus, the complete turbine rotor is completely machined on one machine.

A further ProfiTurn, designed for machining complex pinion shafts, is currently being installed in the Ukraine at NKMZ. It is due to be put into operation at the end of this year. This machine is even larger: The maximal weight of the work pieces is 100 t.

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