Influence of superpositioned velocity components on process parameters and work results at single-pass-honing

叠加速度分量对单道珩磨工艺参数和工作结果的影响

• 批准号: 392314670
• 负责人: Professor Dr.-Ing. Eckart Uhlmann
• 金额: --
• 依托单位: Fachgebiet Werkzeugmaschinen und Fertigungstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/392314670?language=en
• 关键词: Influence; superpositioned; velocity; components; process

The manufacturing process Single-Pass-Honing is mostly used when, among other things very high demands are placed on the holes to be processed in terms of form and dimensional accuracy. Process features that contribute to these improvements in comparison to other manufacturing processes are on the one hand very high tool rigidity, and secondly, that the tool is filling the whole bore hole. Unlike conventional honing tools that require the presence of a honing machine or special plug-ins to expand the honing stones by an integrated mechanism the tools of Single-Pass-Honing can be used in commercially available machine tools, because the honing stones are fixed to the diameter to be manufactured before machining.During Single-Pass-Honing almost the entire workpiece material is cut during the first plunge of the tool into the cylinder, the so-called Intensivzerspanung. This process results in significant disadvantages in comparison to the long-stroke-honing, like very high machining forces and torques, lower axial velocities and in particular the addition of the chip space of honing stones. Significant disadvantages that results in comparison to the long-stroke-honing, are very high machining forces and torques, lower axial velocities, the loading of the chip space of honing stones with loose workpiece material and a flattening of the abrasive grains caused by the uniaxial load. Within the described research project it is planned to overcome these disadvantages by adequate methods.At previous investigations it was found that a significant reduction in machining forces and torques could be generated by a temporarily reversal movement of the honing tool. It can be assumed that the chip space of the honing stones was released by this reversal movement. Within the proposed research project it should be determined whether the systematic influencing of the tool movement has an effect to improve the process of Single-Pass-Honing during the Intensivzerspanung. By overlaying the axial and tangential velocities with particular oscillating components the loading direction can be influenced at the individual abrasive grains similar to the preliminary investigations. The main objective of the proposed research project is therefore to identify the effect of overlaying dynamic velocities on process parameters and work results in Single-Pass-Honing.

单道珩磨主要用于对孔的形状和尺寸精度有很高要求的场合。与其他制造工艺相比，有助于这些改进的工艺特征一方面是非常高的工具刚度，其次是工具填充整个钻孔。传统的珩磨工具需要珩磨机或特殊插件来通过集成机构扩展珩磨石，而单道珩磨工具可以用于商用机床，因为珩磨石在加工前被固定到要制造的直径。在单道珩磨过程中，几乎整个工件材料在工具第一次插入气缸期间被切割，即所谓的强化训练与长行程珩磨相比，该过程导致显著的缺点，如非常高的加工力和扭矩、较低的轴向速度，特别是增加了珩磨石的切屑空间。与长行程珩磨相比，所导致的显著缺点是非常高的加工力和扭矩、较低的轴向速度、用松散的工件材料加载珩磨石的切屑空间以及由单轴载荷引起的磨粒的扁平化。在所描述的研究项目中，计划通过适当的方法来克服这些缺点。在以前的调查中发现，可以通过珩磨工具的暂时反向运动来产生加工力和扭矩的显着减少。可以假设珩磨磨石的切屑空间通过这种反向运动而释放。在拟议的研究项目中，应确定刀具运动的系统影响是否对强化过程中的单道珩磨过程有改善作用。通过将轴向和切向速度与特定的振荡分量叠加，可以在单个磨粒处影响加载方向，类似于初步研究。因此，建议的研究项目的主要目标是确定叠加动态速度对工艺参数和单程珩磨工作结果的影响。