Five-axis measurement of complex surface roughness and its interference-free method
The surface quality of aerospace complex parts directly affects the performance and service life of aero en-gines.Surface roughness as one of the important parameters to measure the surface quality,its detection method is very critical.Aiming at the difficult problem of roughness measurement of aeronautical complex parts,the rough-ness measurement of complex curved surface was studied by using the five-axis measuring machine,which had high flexibility and wide reachability.The relationship between roughness sensor and workpiece position was analyzed.The interference check method between sensor and workpiece was studied,and the non-interference orientation of stylus in five axis roughness measurement was solved,so as to predict the measurable area of roughness.The feasi-bility and accuracy of the model were verified through the roughness inspection experiments of the key parts of the centrifugal impeller.The results showed that the complex surface roughness detection based on five-axis measuring machine was a feasible detection method.The interference-free algorithm could accurately predict the measurable ar-ea,which made it possible to quantify the roughness of the key parts of complex parts,while the detection efficiency was greatly improved.
five-axis measurementroughness inspectioninterference checkmeasurable area prediction
NETL
NSTL
万方数据
