【摘要】 刀具磨损是影响材料加工表面质量的重要因素。本文开展了单晶钛铝合金刀具磨损铣削实验，分析了刀具磨损、铣削力、表面形貌与粗糙度、显微硬度和材料去除量之间的关系。阐明不同种类刀具磨损机理，揭示刀具磨损与表面完整性之间的关系。结果表明：相同材料去除量下，单层涂层和多层涂层铣刀磨损带宽度分别平均减少35%和45%，铣削力F_t和F_n分别平均降低16.3%、18.8%和6.1%、8.9%，且表面粗糙度平均分别降低了15%和10%。同时，三种刀具铣削后均有加工硬化现象，硬度增加了11.2%，并且在20μm的深度处相比于基体硬度分别降低了12.5%、11.3%和12.5%，软化层深度为40μm。更多还原

【Abstract】 Tool wear is an important factor affecting the surface quality of material processing. In this paper, the tool wear milling experiment of single crystal titanium aluminum alloy was carried out, and the relationship between tool wear,milling force, surface morphology and roughness, microhardness, and material removal was analyzed. The relationship between tool wear and surface integrity was revealed by clarifying the wear mechanism of different types of tools. The results show that under the same material removal amount, the wear band width of single-layer coated and multi-layer coated milling cutters is reduced by 35% and 45% on average, the milling force F_tand F_nare reduced by 16.3% and 18.8%, as well as 6.1% and 8.9% on average. The surface roughness is reduced by 15% and 10% on average. At the same time, the three tools all have a work hardening phenomenon after milling, and the hardness increases by 11.2%. The hardness at the depth of 20 μm is reduced by 12.5%, 11.3%, and 12.5% respectively compared with the matrix hardness, and the softening layer depth is 40 μm.更多还原