Study on the Simulation Machining of Disc Cam with Direct Roller Follower Based on Parameterization
In the milling process of disc cams with straight roller followers,in order to determine the shape of the cam contour curve,the theoretical contour polar and cartesian coordinate formulas of the cam are derived through analytical methodology based on the motion law of the cam follower.Since it is difficult to implement CNC programming with the polar coordinate methodology,the theoretical contour cartesian coordinate system formula of the cam is derived by analytical methodology,and the working contour curve of cam is obtained by combining the cutter radius compensation function of NC machine tool.The variable programming of NC machine tool is used to compile the macro program of the disc cam milling,and the parameterized G function instruction is developed and verified by simulation.The result shows that the complex calculation of the cam profile curve can be reduced effectively and the correct machining program can be generated quickly for the cam with the same rule but different sizes and angles by parameterized programming,which leads to higher production efficiency.The development of this machinery function lays a foundation and provides a reference for the development of more complex cam machinery functions with different follower motion forms and laws.
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