Patent ID: 9031687
Filing Date: 2015-05-12
Classification: B24B,H01L

Abstract:
1. A method for predicting a worked shape that is obtained in cases where an object of working is worked by causing relative motion to take place between a tool and the object of working in a state in which abrasive grains are interposed between the tool and object of working, comprising: determining relationships between plural sets of working conditions, each of which constitutes an element, including at least one set of rotation speeds of the tool and the object of working, swinging conditions of the tool, and working pressure of the tool against the object of working and elements of worked shapes that are obtained when working is performed under each of the plural sets of working conditions, providing specified working conditions, representing the specified working conditions as a combination of the plural sets of working conditions each of which constitutes an element, determining a sum of elements of worked shapes each of which corresponds to each set of working conditions in the combination, and based on the sum, predicting a worked shape that will be obtained when working is performed under the specified working conditions, wherein the elements of worked shapes are subjected to a Fourier transform, the sum of the elements of worked shapes determined using the combinations is determined as a sum of the Fourier-transformed functions for these combinations, and the predicted worked shape is obtained by subjecting the sum of the Fourier-transformed functions to an inverse Fourier transform.