Complementary Machining: Effect of tool types on tool wear and surface integrity of AISI 4140

Complementary Machining: Effect of tool types on tool wear and surface integrity of AISI 4140
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补充加工:刀具类型对刀具磨损和 AISI 4140 表面完整性的影响

DOI:
10.1016/j.procir.2020.02.035
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发表时间:
2020
期刊:
Procedia CIRP
影响因子:
--
通讯作者:
Schulze
Schulze
中科院分区:
--
文献类型:
--
作者:
Schwalm;Gerstenmeyer;Zanger;Schulze

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互补加工是一种省时高效的金属工件机械表面处理工艺策略。互补加工的特点是在加工后,利用刀具进行机械表面处理。刀具以与加工过程相反的方向在工件表面上移动,并在表面层中引起弹塑性变形。先前的研究表明,在aisi4140车削过程中,采用互补加工可以达到提高寿命的表面层状态,并且可以达到与喷丸强化后相当的疲劳强度。本文在前人研究的基础上,研究了刀具类型和进给速度等工艺参数对AISI 4140互补加工过程中形貌和刀具磨损(以切削刃微观几何形状变化为代表)的影响。除了切削刀片的不同基材外,研究的重点还在于刀具涂层的影响。对刀具磨损和形貌进行了触觉分析,并与工艺参数进行了关联。结果表明,切削齿基材和涂层对刀具磨损和形貌有明显的影响。
Complementary Machining is a process strategy for the time-efficient mechanical surface treatment of metallic workpieces. The characteristic of Complementary Machining is that after machining, a mechanical surface treatment is carried out using the cutting tool. The cutting tool moves over the workpiece surface in opposite direction to the machining process and induces an elastic-plastic deformation in the surface layer. Previous investigations have shown the possibility to achieve life-enhancing surface layer states in turning of AISI 4140 with Complementary Machining and to achieve fatigue strengths comparable to those after shot peening.In this paper, the influence of the tool types and process parameters, such as the feed rate, on the resulting topography and the tool wear, represented by changes of cutting edge microgeometry, during Complementary Machining of AISI 4140 are investigated based on the previous investigations. In addition to different substrates of the cutting insert, the focus of the investigations is also on the influence of tool coating. Both the tool wear and the resulting topography were analyzed tactilely and correlated with the process parameters. The results show a clear influence of the used substrate of the cutting insert and coating on the tool wear and the resulting topography.
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