Gain Optimization for Cutting Tests on CNC Machine Using the Ballbar Method with CMM Machine Measurements

Optimization is one of the main keys to the success of the optimization process in CNC machines in the industrial field and provides information gain optimization control to improve product quality. Some benefits that can be obtained from optimization are speed and accuracy in product design and production processes. In the production process, a test of the desired quality is carried out. The international ISO rules machine tools especially, CNC milling machines using International Standard ISO 10791--7: 2014 Test condition for machining centres - Part 7: Accuracy of finished test pieces rules have concentricity of external circle under 25 μm. This maintenance case, use the method by increasing or decreasing the gain adjustment on the CNC milling machine input panel. This work was adjusting to find gain optimization settings using two methods, namely the Ballbar and the CMM measurement, to diagnose the CNC milling machine. Ballbar measurement to analyze the results of servo mismatch and circularity without trimming load, while CMM measurement to measurement through products produced on Fanuc CNC milling machine, the result is a trend of graphic error resulting in circularity error results. The best results on "Loop Gain Parameter - System V" which have circularity results on the Ballbar and CMM of 20 μm and 13 μm, it has circularity values below 25 μm at International Standard ISO 10791--7: 2014 Test condition for machining centres - Part 7: Accuracy of finished test pieces as a rule on CNC machines in the adjustment loop gain parameter.