Research On Sureface Roughness Of Equidistant Profile By Turn-milling

Turn-milling technology is a kind of advanced manufacturing technology which has been developed in recent years. When machining complex revolved workpiece, turn-milling can gain preferable machining accuracy and efficiency if it is combined with high speed machining. Equidistant profile surface discussed in this paper is one of the complex revolved workpiece. Because contour line is complicated with different curvature on the circle, the surface roughness machined is uneven when machining at the same rotating speed. In order to solve this problem, the rotating speed of workpiece must change with profile surface curvature. It is of very important significance to make intensive research on the theoretical roughness of profile surface connectors, so that cutting parameters can be optimized and the surface quality can be improved.In this paper, the theoretical roughness of axial turn-milling of equidistant proflie surface outer contour, axial turn-milling of equidistant profile surface inner contour and orthogonal turn-milling of equidistant profile surface outer contour are mainly discussed by the method of establishing mathematic model. Program is made by Java according to the mathematic model. The user interface of turn-milling of equidistant profile surface theoretical roughness is developed. Computer simulation is performed via single factor experiment method and the effects of different parameters on surface roughness are discussed. The solving method is given in this paper. The relevant experiment is carried out, which validates the correctness of mathematic model and computer simulation.Conclusion can be drawn that the surface roughness of turn-milling of equidistant profile surface presents periodic variation on the direction of circumference when machining at the same rotating speed. The theoretical roughness is in inversely proportional with contour curvature. The surface roughness increases with the increase of contour radius, and decrease of rotate speed radio and cutter teeth number. The cutter radius only has influence on the axial turn-milling of equidistant profile surface equidistant profile surface. Eccentric distance has no evident influence on theoretical roughness, with the increase of eccentric distance the maximum of roughness increases and the minimum decreases. In order to obtain even surface roughness assume the rotating speed of workpiece presents periodic variation with the contour angle.