Non-resonant Vibration Auxiliary Table Development And Study On Micro-milling Technology Experriment

With the development of the processing advances in technology andminiaturization requirements, applications of micro parts is more widely used, andhigh demands on the material properties of the micro parts and micro-structure of theprocessing quality, which of micro partsthe manufacturing process put forwardhigher requirements. Micro-parts, especially the processing technology of themicro-structural parts, especially the complex structure and small size of micro-partsmachining, micro milling technology plays an extremely important position.However, due to the fine milling system itself belongs to the weak rigidity of thesystem, it is difficult to achieve ultra-precision level of micro-milling. In theconventional scale milling process or in the process of the non-rotary cutting tool, inorder to improve the processing state of the vibration-assisted method applied in thecutting process, can improve the processing status, the same in order to improve thestate of micro-milling processing, micro-milling process imposed vibration-assistedmethods, this paper vibration assisted micro-milling properties of the study.Generally applied in the cutting process vibration assisted into the twocategories of tool vibration and workpiece vibration, micro milling cutter of thisstudy is the use of high-speed air turbine spindle clamping fine milling, it can not beimposed in the tool side of the vibration assisted effect, so the vibration in the formof the auxiliary table, the vibration signal is applied to the workpiece side of the.Inthis thesis, the design a non-resonant vibration-assisted system, the main body of thesystem, its auxiliary table based on the small displacement of the high-precisionflexure hinge of vibration using piezoelectric ceramic accurate dynamic responseperformance, precision vibration action on the workpiece, and with pressureelectricceramic controller, the piezoelectric ceramic cooling holding device, the preload ofthe piezoelectric ceramic devices and laser triangulation reflection displacementsensor, etc., in order to precise control and testing to the vibration displacement.In this thesis, both non-resonant vibration assisted system with precisionmicro-milling system integrated vibration-assisted systems and precisionmicromilling system compatible to lay a good foundation for the study of vibrationassisted micro-milling process.In this thesis, experimental study of the micro-milling and vibration-assistedmicro-milling of the microscale groove structure, the orthogonal experiment method,the parameters of micromilling parameters feed per tooth to the amount, and thevibration signal of vibration frequencyand amplitude of the groove structure of thesurface roughness and surface accuracy, the experiment proved to exert vibrationassisted to improve the slot structure of the surface roughness and surface accuracy in micromilling process, and the addition of the vibration signalmicro milling forceand vibration signals in tool wear, a brief analysis shows that the imposed vibrationauxiliary signal can reduce the average cutting force in each cutting cycle, andreduce the speed of the tool wear.