Abstract
Recently, a demand for precision machining of dies and molds with complex shapes has been increasing. Although CNC machine tools are utilized widely for machining, still machining error compensation is required to meet the increasing demand of machining accuracy. However, the machining error compensation is an operation which takes huge amount of skill, time and cost. This paper deals with a new method 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 compensated NC program is generated from the modified 3D surface data for the machining error compensation.
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