Research On Structure Of High-speed Five-axis Machining Center For Manufacturing Hard Alloy Turbine Rotor

Many process of the microelectronics industry needs to be done in a vacuumenvironment, the maglev molecular pump is an important vacuum equipment for themicroelectronic industry, and the turbine rotor is the most crucial part of the vacuummaglev molecular pump. At present, the method for processing the turbine rotor is notideal in our country, because the problem in manufacturing the curved surface of theairfoil is not resolved, and the current turbine rotor blades had to be design into a flatshape, manufactured by four-axis machine tool with two axis interpolation. However，the small high-speed five-axis linkage machine tool can be a good solution to theseproblems.This subject comes from the National Science and Technology Major Project"high-end CNC machine tools and basic manufacturing equipment," special projectname is "XKR50small high-speed five-axis machining center for manufacturing hardalloy turbine rotor"(NO.2010ZX04001-042), this issue is in line with "02major scienceand technology" applications and research and development needs. This paper studiedthe advantages and disadvantages of all the structures for five-axis machining center,and using CAD and CAE software to quantitative analyze XKR50high-speed five-axismachining center, then proposed a new high-speed five-axis machining centers suitablefor machining turbine rotor based on the results of this analysis. The details are asfollows:①Quantitative analyzed the advantages and disadvantages of all the structures forfive-axis machining center, then selected structures suitable for machining turbine rotor,argued the rationality of XKR50small high-speed five-axis machining center.②Based on "Modern Practical Machine Design Manual" to calculate theparameters of XKR50small high-speed five-axis machining center, builtthree-dimensional solid model and virtual prototype model of XKR50small high-speedfive-axis machining center by using software PRO/Engineer and calculated the staticand dynamic characteristics of XKR50small high-speed five-axis machining center byusing finite element analysis software ANASYS WORKBENCH, provided a theoreticalbasis for it to let it meet the design requirements.③Proposed a new structure suitable for machining turbine rotor based on theresults of the FEA analysis for XKR50small high-speed five-axis machining center- The YXZ type double-frame small high-speed five-axis machining center. builtthree-dimensional solid model and virtual prototype model of it by using softwarePRO/Engineer as well as calculated the static and dynamic characteristics of it by usingfinite element analysis software ANASYS WORKBENCH. Then compared it withXKR50small high-speed five-axis machining center to demonstrate its superiority.The results show that XKR50small high-speed five-axis machining center is areasonable structure, it meets the processing requirements of the turbine rotor. The YXZtype double-frame small high-speed five-axis machining center has better structuralrigidity and dynamic properties than XKR50small high-speed five-axis machiningcenters, and its mass of moving parts reduces54.4%, which let it have a far-reachingimpact on green Manufacturing industry.