Modeling, Measurement and Control P4

The accuracy of a machined part depends on the precision motion delivered by a machine tool under static, dynamic, and thermal loads. The accuracy is evaluated by measuring the discrepancy between the desired part dimensions identified on a part drawing and the actual part achieved after machining operations. The cutting tool deviates from a desired tool path due to errors in positioning the feed drives, thermal expansion of machine tool and workpiece structures, static and dynamic deformations of machine tool and workpiece, and misalignment of machine tool drives and spindle during assembly. Because the parts...