Patent ID: 7050883
Filing Date: 2006-05-23
Classification: G05B

Abstract:
1. An off-line feed rate scheduling method of a CNC machining process that is performed according to workpiece geometry and a given set of NC code provided from a CAD/CAM system, the method comprising: selecting a constraint variable and inputting a reference value related to the constraint variable; estimating a cutting configuration where a maximum constraint variable value (CW) occurs through ME Z-map modeling; obtaining the estimated cutting configuration and estimating a specific rotation angle (φ calculating a feed rate that satisfies the reference value related to the constraint variable at the estimated specific rotation angle; and applying the calculated feed rate to the NC code, wherein the calculating a feed rate comprises: inputting specific feed rates f calculating maximum constraint variable values CVV approximating a feed rate f calculating a constraint variable CVV determining using the formula below if the constraint variable value CVV where