Increased productivity and cost reduction are preeminent goals of modern manufacturing enterprises. Demands for reduced scrap, faster machining times and avoidance of additional work steps or rework are closely related to these goals. In the conflict of interests between machining time, surface quality and workpiece accuracy, machine tool controls must therefore be capable of making an approach optimized for the milling machine and the manufacturing process.
Under the concept of Dynamic Precision, HEIDENHAIN describes a group of functions for TNC controls that dramatically improve the contouring accuracy of machine tools even at high feed rates and in complex contouring moves. The dynamic accuracy of a machine tools is determined by the feed-axis acceleration required in order to produce precise movement between the workpiece and tool.
When feed axes are accelerated, machine components can be deformed by inertia forces or even begin to vibrate. With Dynamic Precision, the dynamic errors at the Tool Center Point (TCP) that arise during machining are significantly reduced so that NC programs are run with better component accuracy and surface quality, and even noticeably faster.
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