新型超高强钛合金TB17铣削加工表面完整性试验研究
发布时间：2019-01-10 21:36
【摘要】：采用硬质合金刀具对TB17钛合金进行铣削加工试验,研究了刀具前角、后角和螺旋角对钛合金加工表面完整性的影响。结果表明:在试验参数范围内,TB17钛合金铣削加工表面均呈现为残余压应力;前角增大,表面粗糙度和表面显微硬度增加,表面残余压应力先减小后增加;表面粗糙度和表面残余压应力均随着后角的增大而减小;螺旋角增大,表面粗糙度和表面残余压应力均呈现出先减小后增加的趋势;TB17钛合金铣削加工表面形貌由均匀间隔突起的棱脊与深浅不一的沟槽组成,刀具几何参数和刀具磨损状态会对加工表面形貌产生显著的影响。
[Abstract]:The milling experiments of TB17 titanium alloy were carried out with cemented carbide cutting tools. The effects of cutting tool front angle, rear angle and spiral angle on the surface integrity of titanium alloy were studied. The results show that, in the range of test parameters, the milling surfaces of TB17 titanium alloy show residual compressive stress, the surface roughness and microhardness increase with the increase of the front angle, and the residual compressive stress of the surface decreases first and then increases. The surface roughness and residual compressive stress decrease with the increase of the rear angle, and the surface roughness and residual compressive stress decrease first and then increase with the increase of the spiral angle. The surface morphology of TB17 titanium alloy milling is composed of ridges with uniform intervals and grooves of different depths. The geometric parameters of the cutting tools and the tool wear state have a significant effect on the surface morphology of the machined surface.
【作者单位】： 南京航空航天大学机电学院;北京航空材料研究院先进钛合金航空科技重点实验室;
【基金】：航空重点基金项目(20153021001)
【分类号】：TG54
，
本文编号：2406807
[Abstract]:The milling experiments of TB17 titanium alloy were carried out with cemented carbide cutting tools. The effects of cutting tool front angle, rear angle and spiral angle on the surface integrity of titanium alloy were studied. The results show that, in the range of test parameters, the milling surfaces of TB17 titanium alloy show residual compressive stress, the surface roughness and microhardness increase with the increase of the front angle, and the residual compressive stress of the surface decreases first and then increases. The surface roughness and residual compressive stress decrease with the increase of the rear angle, and the surface roughness and residual compressive stress decrease first and then increase with the increase of the spiral angle. The surface morphology of TB17 titanium alloy milling is composed of ridges with uniform intervals and grooves of different depths. The geometric parameters of the cutting tools and the tool wear state have a significant effect on the surface morphology of the machined surface.
【作者单位】： 南京航空航天大学机电学院;北京航空材料研究院先进钛合金航空科技重点实验室;
【基金】：航空重点基金项目(20153021001)
【分类号】：TG54
，
本文编号：2406807
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