Hybrid machine control incorporating fast-tool servos

摘要

Presently disclosed is a method and system for processing standard part description programs in real time into the tool position control data appropriate to a CNC machine's standard and high bandwidth mechanisms, respectively. The result is precise tool tip control that tracks the programmed path at all times while maintaining the appropriate feed rates and accelerations for each type of mechanism. In one exemplary embodiment, a hybrid mechanism employing a high bandwidth mechanism mounted on and moved by a standard mechanism is employed. The command vector for the high-bandwidth mechanism is computed by subtracting the tool tip vector filtered to comprise only the tool tip positions and trajectories realizable by the standard mechanism from an ideal tool tip trajectory vector that represents the complete programmed path. These calculations produce a synchronous set of movements for both standard and high bandwidth mechanisms.