THE CONTROL OF MULTIPLE CONSTRAINTS WITHIN AN OPEN-ARCHITECTURE MACHINE-TOOL CONTROLLER

The authors demonstrate the utilization of a novel control architectur e and associated algorithms in the maintenance of multiple constraints arising from machining operations. The control architecture is config ured to allow the most severe of a series of constraints to control th e feedrate, and thus duplicates the procedure which would normally be carried out in off-line optimization strategies. The use of the contro l in the maintenance of force and chip thickness constraints is analyz ed and demonstrated using turning operations as an example.