纵扭超声参数对钛合金铣削加工性能的影响实验

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中图分类号：TB559 文献标志码：A 文章编号：1671-5276（2025）05-0090-04

Abstract：Ultrasonic vibration assisting machining canmeet thehigh quality requirements ofcomplex structuralparts，and whenultrasonic auxiliary technology being added for cuting，the tissue removal effect of the cutingarea can be effectivelyimproved，andtheknife—chiploadcanbetransformedthroughlongitudinalandtorsionalultrasonicvibration， which greatly improves thecontrollabilityof the process.The experiment of ultrasonicmiling of titanium alloy Ti-6Al -4V was carried out，and the efect of ultrasonic parameters on miling performance of titanium alloy was analyzed by orthogonal method.Theresultsshowthat with the increaseof longitudinalamplitude，thecharacteristicsoffluctuation changeand greaterresidualcompressivestressareformed.Whenthelongitude一torsional phase diferenceis increased， theresidualcompressive stressonthesurfacesurfaceof the materialhas asmallrfluctuationrange，showinganincrease at first and thena decrease.In order to obtain the maximum surface residual compressive stress，the optimal ultrasonic parameters were determined： longitudinal amplitude 6μm ，frequency ，phase difference 一 30∘ ，torsional amplitude 8μm . This research is helpful for improving the quality of surface machining.

Keywords：longitudinaltorsion；ultrasonicvibration；milling；parameter optimization，residual stress；testverificatior

0 引言

应力，严重降低了钛合金构件的服役寿命 [3-5] ，因此优化机加工工艺是提高钛合金切削质量的热点之一。（剩余4335字）