MICRO MACHINING | CASE STUDY << Figure 4: TDie that was
manufactured with the help of a free X-Y profile and a superimposed pendulum
stroke. Te cross-grinding is clearly visible. >>
<< Figure 3:Te grinding and dressing cycles
integrated in the NC control unit allow an intuitive and efficient utilisation of the new functionalities.>>
With the help of the ultrasound sensor technology it is possible to fully automatically determine the position of the top surface with a precision of less than 0.5 µm in order to achieve a subsequently repeatable and stable process on the component.
According to Janitza, the Kern Pyramid Nano machining centre can illustrate the many applications using profile, round and flat grinding procedures. One example is shown by profile grinding. Particularly interesting for this technology is the manufacturing of forming and cutting tools. Often this involves dies or moulds with vertical surfaces and free X-Y profiles. These profiles are programmed in two axes and then superimposed with the pendulum stroke of the Z-axis. This creates the quasi-stochastic cross-grinding process that is a characteristic for profile grinding. Interior profiles with a diameter of <1 mm can be processed as well by increasing the wheel orbital rotation.
Air bearing pockets for applications with extremely high speeds often require the highest precision. The decisive factor is
the depth dimension of the air bearing pocket with respect to the top surface. With the help of the ultrasound sensor technology it is possible to fully automatically determine the position of the top surface with a precision of less than 0.5 µm in order to achieve a subsequently repeatable and stable process on the component.
24 | commercial micro manufacturing international Vol 7 No.4
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