Tool profile design for the mold for machining the bush of cone screw seawater hydraulic pump

Abstract

Design method of the tool profile for machining the mold was found to facilitate the casting or extrusion of the bush of cone screw seawater hydraulic pump within this paper. Mathematical expression of the theoretical tool profile was established, as well as equation of the contact line between mold and tool surface, based on meshing theory and coordinate transformation theory. As solving contact condition involves implicit functions and trigonometric functions, only with methods of numerical discretization analysis by using the fzero function to solve single-variable nonlinear equations, can the contact line trajectory and theoretical curve of tool profile be obtained quickly and accurately. The tool profile design for manufacturing the mold lays a foundation for the processing of pump bush.

Profile design and simulation verification of hard whirling tool for ZC1 worm machining

“…After each cutting, the axial movement distance of the workpiece and the rotation angle around the axis is obtained by equation (9).…”

“…This method has high accuracy, but it is only applicable to cylindrical gears. Based on meshing theory and coordinate transformation, Chen et al 9 established the mathematical expression for the theoretical tool profile and the equation of the contact line between mold and tool surface. The design method of the tool profile for machining the mold was found to facilitate the casting or extrusion of the bush of cone screw seawater hydraulic pump.…”