CLOSED-LOOP CNC MACHINE SYSTEM AND METHOD
4 Assignments
0 Petitions
Accused Products
Abstract
A closed-loop feedback system and method for performing a machining operation. A tool'"'"'s operational properties are measured in real-time. The operating parameters of the machining process are adjusted in real-time based on the measured properties.
14 Citations
29 Claims
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1-20. -20. (canceled)
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21. A method for performing a machining operation on a workpiece, the method comprising:
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physically removing material from a workpiece that is mounted in a computer numerically controlled machine by providing physical contact and relative rotation between the workpiece and a tool that is installed in the computer numerically controlled machine; providing an algorithm to set the operating parameters for a machining operation performed by the computer numerically controlled machine; activating a feed drive to cause relative translational movement between the workpiece and the tool; measuring at least one physical property of the tool in real time, comprising; receiving a signal from a sensor associated with the tool indicative of at least one measured physical property selected from the group consisting of;
deflection of the tool, vibration of the tool, and force on the tool, andanalyzing the change of the at least one measured physical property with respect to time; and adjusting the algorithm to reset the operating parameters for the machining operation in real time based on the at least one measured physical property. - View Dependent Claims (22, 23, 24, 25)
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26. A closed-loop feedback system for controlling a turning process performed on a workpiece by a computer numerically controlled machine, the method comprising:
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physically removing material from a workpiece that is mounted in a computer numerically controlled machine by providing physical contact and relative rotation between the workpiece and a boring bar that is installed in the computer numerically controlled machine; providing an initial computer numerically controlled machine code which sets the spindle speed and feed rate for the turning process; measuring in real time during the turning process at least one of the elements selected from the group consisting of;
the force on the boring bar, the deflection of the boring bar, and the vibration of the boring bar; andadjusting the computer numerically controlled machine code in real time to set a new at least one of spindle speed and feed rate based on the real time measurement. - View Dependent Claims (27, 28, 29)
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Specification