Development Of Five-Axis Additive And Subtractive Hybrid Machining Center And Research On Its Processing Technology

Additive manufacturing,as a hot research field in recent years,has special processing advantages.It can process the parts which are difficult to be processed by traditional material reduction methods or need to be molded by means of molds.It can also repair high-cost parts and coating the surface.With the development of the aviation field,the integrated optimization of parts leads to more and more complex structure of parts,and the demand in the field of complex parts processing and precision manufacturing is also increasing.Five axis linkage has the advantage that three-axis does not have.The machining is more flexible and single clamping can process other structures except the clamping position,reducing the clamping error and repositioning error.The machining effect and surface machining quality are much higher than threeaxis machining.The combination of the two can greatly expand the scope of processing application.Based on the overall design scheme of modular integration of high-power laser additive system into the full-function and high rigidity five axis linkage machining center,the selection of key components,the interface of numerical control system and the functional configuration of in-situ detection are completed.The machining accuracy of the machine tool is improved by the method of direct laser interferometer measurement compensation and numerical control system parameter optimization,and the multi-body system motion model is established.On the basis of the research and development of the compound machining center,the single pass,plane and threedimensional forming experiments of the additive were carried out,the basic parameters of the additive processing were determined,and the feasibility of the additive processing of the machine tool was emphatically verified.Based on the needs of existing projects,a specific processing technology for the composite processing of the hollow booster impeller was developed,and the hollow impeller additive test was carried out,and the hollow impeller parts were completely formed.The test results show that the five axis composite machining center can be applied to the design and manufacture of aerospace components with new structure,and has better machining adaptability and application potential.