Design And Analysis Of Double Spindle Horizontal Milling Machine Tool For The Symmetrical Machining Turbine Rotor Blade

Duralumin turbine rotor is critical components of the maglev molecular pump. Dueto the complicated structure of the duralumin turbine rotor, the most prominent problemis that machining efficiency is low. In view of this problem, in this thesis, a new typedouble spindle horizontal milling machine tool is put forward. The main contents of thisthesis as follows:The main performance parameters of the machine tool are determined based on theprocess analysis of duralumin turbine rotor blade. The double spindle horizontal millingmachine tool is proposed considering characteristics of the existing machine tool. Thismachine tool scheme can make the machining efficiency nearly doubled in theory withdouble spindle symmetry. Through the motion simulation to verify the feasibility of themachine tool scheme by ADAMS.In view of the existing clamping system adjustment laborious and larger positioningerror, the best clamping system is determined based on the contrast analysis of threekinds of clamping scheme. To ensure its radial positioning accuracy by small taperspindle, and to ensure its axial positioning accuracy by the turbine rotor lower end in thisscheme. In this way, the clamping system is able to meet positioning requirement simpleand quickly.The Y direction table ball screw feed system is designed for its thermal deformation,which influences the positioning accuracy seriously. FEM simulation was taken toanalyze its steady-state temperature field and thermal deformation by ANSYS. Accordingto the date obtained from FEM simulation, unitary linear regression mathematical modelis established based on the least square method. The linear regression equation wasobtained. The correlation coefficient significance test is analyzed. The ball screw thermaldeformation error rule is mapped to tool tip, provides the basis for the ball screw thermaldeformation error compensation.