Special Functions For Driving Gear And Turbine Components - Siemens SINUMERIK 840D Manual

5.1
Impeller
86
Driving gear and turbine components
5.1 Special functions for driving gear and turbine com-
ponents
Turbine impellers or blades are subject to the toughest of requirements in terms of surface qual-
ity and contour accuracy. As a result, the NC is expected to process large quantities of data
within a very short space of time. Even the smallest jumps in deceleration and acceleration can
result in surface defects (e.g. chatter marks).
Turbine blades are often made from high-strength nickel alloys or titanium, which means that
suitable methods have to be employed. This makes SINUMERIK the perfect solution, as it is a
complete package offering a highly dynamic drive combined with a control system.
Key functions for machining parts for driving gear and turbine technology:
High speed settings CYCLE832,
as optimum data compression within the tolerance band, combined with feedforward control
and jerk limitation, ensures the required surface quality and contour accuracy.
Spline interpolation for hobbing (face/circumferential milling) impeller blades.
TRAORI,
for 5-axis transformation that is independent of the kinematics.
Integrated process chain from generation in CAD through to execution on the CNC.
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