Engineering Transactions, 60, 4, pp. 315–332, 2012

Controller Concept for a Highly Parallel Machine Tool

Christoph HABERSOHN
Vienna University of Technology Institute for Production Engineering and Laser Technology

Friedrich BLEICHER
Vienna University of Technology Institute for Production Engineering and Laser Technology

Modern high performance cutting processes force high demands on new machine tool con-
cepts with enhanced mechanical stability and better dynamic behavior. In the development of
innovative machine tool concepts the main focus is still set on the design of mechanical struc-
tures with parallel kinematics. The new machining center “X-Cut” consists of a double scissor
kinematic structure with a degree of parallelism of two, incorporating four drives for the XY -
plane movement. Thus, the arrangement of four interlinked axes leads to an over-determined
kinematic structure. Due to the complex behavior of the kinematic structure a new method in
NC-controller design and parameterization is needed, including enhanced compensation and
preloading algorithms.
Keywords: machine tools, kinematic structure, parallel kinematics, control design, modeling, simulation
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