Research On Cutting Path Planning Of Ultrasonic Cutting Complex Surface With Six-axis In The Materials Of Honeycomb Core

The honeycomb core composite material is kind of new composite material with high specific strength and stiffness,excellent fatigue performance,anti-fatigue and anti-noise ability,which is more and more widely used in aerospace and other fields.The traditional way of high speed cutting machining surface has not meet the requirements of composite materials processing the honeycomb core,so ultrasonic machining technology in the cutting of honeycomb core material is considered as a critical technique for solving the high quality and efficient processing of honeycomb core materials.And it is important for complex surface of honeycomb core material to generate the ultrasonic machining path planning,which will directly affect the process quality and machining efficiency as well.Based on the honeycomb core composite material properties and ultrasonic machining method,the paper takes a typical structural formation of the complex curved surface called airfoil-ruled surface for example.It establishes airfoil surface mathematical models of vertical stripes and obtain parametric surface equation to ensure the continuity of the curved surface curvature function and conductivity.Method of line cutting is used referring to the traditional process of curved path planning to make sure of the reasonable feeding line.Blade-tool and disc-tool are often used in ultrasonic machining composite material honeycomb core,which is respectively for processing former and later the processing stage.With the unity of the path,two kinds of tool path planning methods called the crosscutting method and slitting method are adopted according to their respective processing path and the tool position,with the method combining of ultrasonic vibration parameters,cutting tool and parameter calculation,it respectively develop adaptive feed parameter in every machining path planning and mathematics model of the machining error and increase the processing efficiency with the method of rising appropriate angular and blade angle.Movement characteristics of ultrasonic vibration are analyzed the influencing factors of ultrasonic vibration error of amplitude,which affects the processing quality.According to the various processing technology and feeding form,Space coordinate system is build to solve the position of cutter axis vector control tool position,and test whether there is interference collision to put forward the corresponding measures or not.Based on the above theoretical value in the path planning,blade-tool and disc-tool path planning is achieved through software programming platform to checkout the validity of the cutter location file and determine the rationality of the cutter location planning.With surface precision and machining efficiency as the constraint factors,theoretical calculation and analysis is used by comparing the maximum machining error and the total length of tool path parameter range according to the airfoil surface characteristic parameters of surface,to select the optimal cutting tool machining path.In the condition of machining error allowed,the total length of slitting method is 83%crosscutting method by calculating and examples.So slitting method is the ideal tool path to select first.