Patent ID: 9575486
Date: 2017-02-21
CPC Classifications: G05B,Y02P

Claim:
1. A method for determining a path of a tool machining a pocket shape in a workpiece, wherein the pocket shape is a closed curve in an x-y plane, comprising: determining positions and velocities of a motion of an oscillator having an energy defined by a function that is positive within a boundary of the pocket shape and equals zero on the boundary of the pocket shape; determining coordinates of the path of the tool based on corresponding pairs of position and velocity values of the motion, wherein a position value of each pair represents an x coordinate of the path of the tool in the x-y plane, and a velocity value of each pair represents a y coordinate of the path of the tool in the x-y plane; determining an equation describing the motion of the oscillator, wherein the equation includes a damping term; solving the equation with respect to time to determine a set of position and velocity values of the motion of the oscillator for a corresponding set of time instants; and determining coordinates of the path of the tool at each time instants based on corresponding position and velocity values of the motion; updating the damping term; updating the path of the tool by resolving the equation with the updated damping term; comparing a metric of a performance of the machining with a threshold; and repeating the updating the damping term and the path of the tool based on a result of the comparing, wherein steps of the method are performed by a processor.