Cutting forces, tool wear and surface finish in high speed diamond machining
Cutting forces, tool wear and surface finish in high speed diamond machining
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DOI：
10.1016/j.precisioneng.2017.02.018
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发表时间：
2017-07-01
影响因子：
3.6
通讯作者：
Rentsch, Ruediger
中科院分区：
文献类型：
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作者：
Brinksmeier, Ekkard;Preuss, Werner;Rentsch, Ruediger
我们研究了切削力，刀具磨损和高速金刚石车削和铣削OFHC铜，黄铜CuZn 39 Pb 3，铝AlMg 5，和化学镀镍获得的表面光洁度。在恒定材料去除率的端面车削实验中，切削力被记录为v（c）=150 m/min和4500 m/min之间的切削速度的函数，揭示了向绝热剪切的过渡，这得到切削过程的FEM模拟的支持。在低切削速度（v（c）=380 m/min）和高切削速度（v（c）=3800 m/min）下进行的飞切实验表明，与常规加工中的经验相比，在普通切削速度下切削刃的磨粒磨损率明显高于在高切削速度下的磨粒磨损率。此外，它被发现，在金刚石铣削钢的化学诱导的刀具磨损率是随着减少每转的刀具啮合时间而降低。高速金刚石加工还可以产生改进的表面粗糙度，这通过比较在低切削速度（v（c）=100 m/min）和高切削速度（v（c）=2000 m/min）下在OFHC铜和黄铜CuZn 39 Pb 3的金刚石铣削中获得的晶界处的台阶高度来证实。因此，高速金刚石加工提供了几个优点，更不用说大幅减少加工时间了。(C)2017爱思唯尔公司All rights reserved.
We have investigated the cutting forces, the tool wear and the surface finish obtained in high speed diamond turning and milling of OFHC copper, brass CuZn39Pb3, aluminum AlMg5, and electroless nickel. In face turning experiments with constant material removal rate the cutting forces were recorded as a function of cutting speed between v(c) =150 m/min and 4500 m/min revealing a transition to adiabatic shearing which is supported by FEM simulations of the cutting process. Fly-cutting experiments carried out at low (v(c) =380 m/min) and at high cutting speed (v(c) =3800 m/min) showed that the rate of abrasive wear of the cutting edge is significantly higher at ordinary cutting speed than at high cutting speed in contrast to the experience made in conventional machining. Furthermore, it was found that the rate of chemically induced tool wear in diamond milling of steel is decreasing with decreasing tool engagement time per revolution. High speed diamond machining may also yield an improved surface roughness which was confirmed by comparing the step heights at grain boundaries obtained in diamond milling of OFHC copper and brass CuZn39Pb3 at low (v(c) =100 m/min) and high cutting speed (v(c) =2000 m/min). Thus, high speed diamond machining offers several advantages, let alone a major reduction of machining time. (C) 2017 Elsevier Inc. All rights reserved.