Tool Path Planning of 5-Axis Finishing Milling Machining for Closed Blisk

Abstract

To solve the difficult problem of NC machining of closed blisk, the paper combines with the structure characteristics of processing surface and the characteristics of Channel processing, and at the same time to study the technology of processing impeller channel tool path planning. By planning different processing methods of tool axis control for different processing parts, take outer arc processing as an example, tool path planning method is analyzed. By the method to generate the ruled envelope surfaces in view of blade offset surfaces, to put forward new methods of dividing plunging region. The method of surface offset was applied to determine the safety space of tool axis movement. To determine the range of tool axis angle by the relationship between the boundary curves and division the processing area by the tangent method. Finally, The results of tool path planning were verified by using five-axis processing, which proved the reasonability and feasibility of the scheme.