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.

单通珩磨制造工艺主要用于对要加工的孔的形状和尺寸精度要求很高的情况。与其他制造工艺相比，有助于这些改进的工艺特点一方面是非常高的工具刚性，其次是工具填充整个孔。与传统的珩磨工具不同，传统的珩磨工具需要一个珩磨机或特殊的插件来通过一个集成的机构来扩展珩磨石，单通珩磨工具可以在商用机床上使用，因为珩磨石在加工前被固定在要制造的直径上。在单次珩磨过程中，几乎整个工件材料在刀具第一次插入气缸时被切割，即所谓的强化加工。与长行程珩磨相比，这种工艺有明显的缺点，如非常高的加工力和扭矩，较低的轴向速度，特别是珩磨石的切屑空间的增加。与长行程珩磨相比，其显著的缺点是非常高的加工力和扭矩，较低的轴向速度，工件材料松散的珩磨石的切屑空间的负载以及由单轴载荷引起的磨粒变平。在所描述的研究项目中，计划通过适当的方法克服这些缺点。在先前的研究中发现，通过珩磨刀具的临时反转运动可以显著降低加工力和扭矩。可以认为，这种反向运动释放了珩磨石的切屑空间。在提出的研究项目中，应确定刀具运动的系统影响是否对强化器跨越过程中的单道珩磨工艺有改善作用。通过用特定的振荡分量叠加轴向和切向速度，可以影响单个磨粒的加载方向，这与初步研究类似。因此，提出的研究项目的主要目的是确定叠加动态速度对单道珩磨工艺参数和工作结果的影响。