Machine Hammer Turning – Integration of mechanical surface modification into the cutting operation

机锤车削 â 将机械表面改性集成到切削操作中

• 批准号: 414322709
• 负责人: Professor Dr.-Ing. Frederik Zanger
• 金额: --
• 依托单位: Institut für Produktionstechnik (WBK)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/414322709?language=en
• 关键词: Machine; Hammer; Turning; Integration; mechanical

Mechanical surface treatments usually represent an additional process step following machining. The aim of this research project is to achieve surface microtexturing during machining in parallel with the machining process using the hammering turning process strategy. The target parameter here is the setting of a direction-dependent friction coefficient by means of an anisotropic microtexture of the surface, whereby a resulting increase in hardening is intended to compensate for the consequences of the microtexture-induced notch effect. In the first project phase, the feasibility of the process combination was demonstrated. In the continuation of the project, these findings are to be transferred to the production and microtexturing of shafts. The focus here is on the tribological behavior of the microtextures. This results from the plastic deformation of the surface layer, which is caused by indentations of the cutting tool perpendicular to the surface. With the help of the mechanism understanding gained from the simulations and experiments, the tribological behavior of a surface microtextured by hammering turning is to be specifically adjusted. As the microtexturing occurs through the cutting edge of the hammering tool, the rake and flank surfaces can produce a scale-like microtexture. This scale-like topography is aimed to exhibit anisotropic tribological behavior in terms of friction and wear.

机械表面处理通常是机械加工后的额外工艺步骤。本研究项目的目的是利用锤击车削加工策略，在加工过程中实现表面微纹理。这里的目标参数是通过表面的各向异性微结构来设置方向相关的摩擦系数，由此导致的硬化增加旨在补偿微结构诱导的缺口效应的后果。在项目第一阶段，论证了工艺组合的可行性。在该项目的继续过程中，这些发现将转移到轴的生产和微结构上。这里的重点是微观织构的摩擦学行为。这是由于表面层的塑性变形造成的，这是由于刀具垂直于表面的凹痕造成的。借助于模拟和实验所获得的机理认识，对锤击车削微结构表面的摩擦学行为进行了具体的调整。由于微观纹理是通过锤头的刃口进行的，所以前刀面和后刀面可以产生鳞片状的微观纹理。这种鳞片状的形貌旨在表现出摩擦和磨损方面的各向异性摩擦学行为。