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.

制造工艺中的单道次珩磨主要用于对待加工的孔的形状和尺寸精度提出非常高要求的场合。与其他制造工艺相比，促成这些改进的工艺特征一方面是非常高的刀具硬度，其次是刀具正在填充整个钻孔。不同于传统的需要使用研磨机或专用插件来通过集成机构来扩展研磨石的研磨工具，单道次研磨工具可以用于商业机床，因为研磨石在加工之前是固定在要制造的直径上的。在单道次研磨过程中，在刀具第一次插入圆柱体时，几乎整个工件材料都被切割，即所谓的强度跨度。这一工艺与长行程珩磨相比具有显著的缺点，如很高的加工力和扭矩，较低的轴向速度，特别是增加了研磨石的切屑空间。与长冲程珩磨相比，其主要缺点是很高的加工力和扭矩，较低的轴向速度，磨削石的切屑空间被松散的工件材料加载，以及单轴载荷导致磨粒扁平。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。以前的调查发现，通过暂时反向移动研磨工具可以显着减少加工力和扭矩。可以假设，这种反向运动释放了研磨石的切屑空间。在拟议的研究项目中，应确定刀具运动的系统影响是否对改进强化跨度期间的单道研磨过程具有效果。通过在轴向和切向速度上叠加特定的振荡分量，可以在单个磨粒上影响加载方向，类似于初步调查。因此，拟议研究项目的主要目标是确定在单次磨削过程中，搭接动态速度对工艺参数和工作结果的影响。