Studying For Structure Parameters Optimization And Dynamic Characteristics Of Diamond Micro Cutting Tools

Micro parts with high precision are more and more widely used in the field ofaerospace, biomedical and information communication technologies, andmicro-milling is considered the most suitable for processing micro components,because of its unique advantages, ie, high precision, high efficiency and overcomingthe MEMS’s limitations. Therefore, the study on structural parameters optimization,tool runout, the evaluation of the processing quality and the factors affecting toolwear of the diamond cutter have important practical significance. The main contentof the subject includes the following aspects:First of all, the structure of the PCD micro milling cutter is designed,meanwhile the corresponding modal analysis also is completed with ansys. And thenthe optimized micro milling cutter model is obtained through the structuralparameters optimization, with getting the maximum natural frequency and theminmum stress and distortion as optimization objective and the overhang length, therelief angle of main cutting edge, the relief angle and rake angle of side edge asoptimization variables. Though harmonic analysis of the optimized PCD micromilling cutter, it is concluded that Y is not vulnerable to the influence of externallow-frequency vibration.Secondly, by detecting the tool runout of the micro milling tool, the influenceof the overhang length, feed speed, axial depth of cut and spindle speed to the toolrunout is researched, and meanwhile the influence law of them to the tool runout isanalysed by the orthogonal experiment design. The experimental data is dealt within regression analysis, and the numerical experience formula of the tool runout isobtained, then getting a significant test.Finally, by detecting the surface roughness of the workpiece and the tool wearof the micro milling tool, the influence of the overhang length, feed speed, axialdepth of cut and spindle speed to the roughness and tool wear is researched, andmeanwhile the influence law of them to the roughness and tool wear is analysed bythe orthogonal experiment design. The experimental data is dealt with in regressionanalysis, and the numerical experience formula of the roughness and tool wear isobtained, then getting a significant test..