Abstract
This paper presents a hierarchical open architecture multi-processor CNC design for machine tools. The system's primary bus accommodates the computer modules which look after the user interface, machining process control and monitoring tasks. The secondary bus of a high performance CNC module is used for communication with dedicated micro-controller based drive control modules. There is an open flow of position, feed and machining commands and states between CNC master, machining process control and monitoring modules in the system. Sample test results for paralell implementation of NC tool path control, adaptive cutting force control and tool breakage detection are shown to illustrate the openness of the designed system for intelligent machining operations.
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