Eccentricity and length distortion of spindle under the influence of temperature rising duration machining and compensation solution

Facing with errors of a product after machining was a big title in this filed. That will affect product’s quality with unpredictable situation when products are in use for some particular applications such as medical facilities. Improving the precision of machine tools by exploring temperature on multiple points and measuring differential locations of the spindle is going to be executed in this study. A temperature measurement tool and a software running on Windows platform have been developed by us and combining with Non-bar system in order to support analyzing the temperature rising with the changes of length of the spindle to find the compensation solution based on eccentricity and length distortion. In this study, the whole tests have done on HEIDENHAIN five – axis CNC machine tools for this investigation and the errors after applying compensation function have reduced 70% with respect to the errors after machining without using compensation function.