308 Machining Error Compensation Reflecting Measured Accuracy : Verification of Machining Error Compensation Method

Recently, a demand for precision machining of dies and molds with complex shapes has been increasing. Even CNC machine tools are utilized widely for machining, still machining error compensation is required to meet the requirement of machining accuracy. However, the machining error compensation is a skilful operation which takes huge amount of time and cost. This paper deals with a way of the machining error compensation. The 3D surface data of the machined part is modified according to the machining error measured by CMM (Coordinate Measuring Machine). A newly NC program is generated from the modified 3D surface data for the machining error compensation.