Modelling of tooth trajectory and process geometry in peripheral milling of curved surfaces

Effect of direction of parameterization on cutting forces and surface error in machining curved geometries

“…The expressions for these process geometry variables were developed by Rao and Rao [2]. The same has been used here to study the objectives stated earlier in Section 1.…”

“…(1) and (2). Similarly, the coordinates of successive tooth entry point D corresponding to tool position B can be calculated.…”

“…In the case of machining curved geometries, the problem of tool deflection induced surface error will be more complicated because of constantly changing cutting geometries. This is due to change of workpiece curvature which leads to the variation of process geometry [2]. Most of the past research work to predict tool deflection induced surface error is focused on machining straight geometry workpieces [1,[3][4][5][6][7][8][9].…”

Modeling of process geometry in peripheral milling of curved surfaces

“…The distance between two successive intersection points of cutter and workpiece boundary was considered as the actual feed per tooth. Rao and Rao (2005) presented a method for modeling of the process geometry in curved surface machining. The true tooth trajectory was adopted to estimate the instantaneous chip thickness, tooth entry/exit angle and actual feed per tooth.…”

Chip thickness analysis for different tool motions

“…The other types are generated by an unstable machining process. The modelling of true tooth trajectories and undeformed chip thickness in case of circular interpolation has not been attempted in the past, a very recently work has been made by Rao and Rao (2005) which developed a model of tooth trajectory and process geometry in peripheral milling of curved surfaces and Dotcheva and Millward (2005) which present a method for calculating maximum chip thickness in corner milling operation.…”