Computer simulation of the rotary cutting edges with helical teeth on the complex surfaces
this paper researched the forming theory of the cutting tools with helical teeth and complex surfaces. Deduced the nonlinear equations of the movement of NC system to generate such tools, presented the way to find the solution of the equations, calculated the cross section graphics of the teeth profile and computer simulation of NC machining.
A study on a virtual manufacturing model of a revolving milling cutter in 2-axis numerical control processing
Abstract This paper introduces the same and different points of relative problems in virtually manufacturing a revolving milling cutters that are under two different definitions: equal helix lead cutting edge and equal helix angle cutting edge. The relative problems include the design of the cutting edge curves, the design of the groove and the grinding wheel, the design of the feed speed in 2-axis NC processing, the actual groove curved surface, computer simulation, post-processing, etc. It also gives corresponding common mathematical models and some examples. Finally, some useful conclusions are drawn.
A dynamic contact buckling analysis by the penalty finite element method
The present paper deals with the application of the finite element method to dynamic contact buckling problems. The penalty function method is applied to incorporate the contact conditions in the equation of motion and a trial-and-error method is employed to obtain the converged contact state. Numerical examples are analysed to show the effectiveness and the validity of the method, and it is applied to a dynamic buckling problem involving contact phenomena.