并行超声振动切削对钛合金轴表面完整性的影响研究

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关键词：并行超声振动切削；表面完整性；钛合金；超声振动

中图分类号：V26

DOI：10.3969/j.issn.1004-132X.2026.03.022 开放科学（资源服务）标识码（OSID）：

Abstract： Considering the difficulties in machining surface quality assurance of titanium alloy shaft parts，a parallel ultrasonic vibration cutting method was proposed based on ultrasonic vibration with two tools cutting synergy. The parallel ultrasonic vibration cutting principles and cutting modes were analyzed， and the tool-workpiece trajectory and separation cuting conditions were studied.The efects of four types of cutting processes including the parallel ultrasonic vibration cutting and the single-tool conventional cutting，the conventional cuting with two tools （parallel cuting），and the single-tool ultrasonic vibration cutting，on their surface integrity （i.e.， surface roughness and machined surface morphology，surface residual stress，microstructure and surface hardness）were studied. The experimental results indicate that the parallel ultrasonic vibration cutting and the single-tool ultrasonic vibration cutting significantly benefit to reduce the surface roughnessof the machined surfaces，to increase the thickness of thedeformed layers and the surface hardness，resulting in high surface residual stress.The paralel cuting and parallel ultrasonic vibration cuting may reduce the surface residual stress but increase the surface roughness.Therefore，paralel ultrasonic vibration cutting combines the advantages of parallel cutting and ultrasonic vibration cuting，achieving a lower surface roughness while reducing surface residual stress，increasing surface microhardnes and hardening rate，and further enhancing material properties.

Key words： parallel ultrasonic vibration-assisted cutting；surface integrity； titanium alloy； ultrasonicvibration

0 引言

钛合金轴类零件因具有比强度高、耐热性好、耐腐蚀强等优良性能被广泛应用于航空领域，特别是航空发动机传动杆、航空舱门转轴以及用来支撑或固定飞机发动机和引擎机舱的各种钛合金拉杆、连杆和转轴等核心基础零部件[1-3]。（剩余15364字）