Makino Inc.

Mark W Larson

Zhigang Wang

Shogo Nakashima

A pre-process simulation may calculate operating conditions of a machine tool by simulating a NC program and calculate predicted values indicative of the operating conditions. A real time monitoring system may compare actual values from the actual operation of a machine tool actually executing the NC program to the predicted values and determine whether to initiate a response. The operating conditions may be machine tool operating conditions. The comparison of actual values to predicted values may be based on a dynamic limit within which the predicted values fall which may vary based on the tool position, and the dynamic limit may include upper and lower limit boundaries.

Real time machining process monitoring utilizing preprocess simulation

A method for performing a milling operation includes providing a milling cutter and a workpiece having an non-machined workpiece surface; receiving a set of milling cutter geometry parameters; creating a curvilinear profile from the workpiece surface; extracting a radius parameter from the curvilinear profile; determining an initial step-over value in response to the set of milling cutter geometry parameters; determining a surface roughness value in response to the set of milling cutter geometry parameters, the curvilinear profile of the workpiece surface, the radius parameter, and an initial tool inclination angle; determining a minimum surface roughness value in response to the cutter inclination angle value; and adjusting a calculated step-over value in response to the minimum surface roughness value where the calculated step-over value and the calculated inclination angle value are applied to operating the milling cutter.

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Hamilton, OH, United States of America

Mark W Larson