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Development of a quick test method for the characterisation of the in-process properties of conventional grinding tools

开发一种快速测试方法来表征传统磨削工具的加工性能

基本信息

批准号：
138587811
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：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2012-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/138587811?language=en
关键词：
Development quick test method characterisation

项目摘要

Due to the technological developments regarding innovative machine tools and machining strategies, higher cutting speeds and higher material removal rates are continuously demanded of conventional grinding tools. Thus the grinding tools are often utilised at the limit of their physical properties and capabilities. This leads to the effect that small variations in the properties of the grinding wheels often have significant consequences on the grinding process. Hence, the repeatability of the production of grinding tools in terms of their properties, and the prediction of their in-process behaviour are of increasing importance for process control. To date users’ demands for an evaluation method have not been adequately fulfilled however. Therefore new standards that are developed on an international basis are required. Multiple projects and studies have attempted to develop testing methods but success regarding the prediction of the in-process behaviour has been limited. Two common strategies are distinguishable: physical and technological testing methods. In physical testing methods, mechanical and material related parameters are measured without the grinding tool being engaged in a machining process. In technological testing methods, process parameters and machining results on the workpiece are detected in a defined machining process in order to deduce grinding tool characteristics. The advantage of technological testing methods is that all influencing parameters regarding the process, tool and workpiece are considered. Due to the complex structure of grinding tools, a general association between the known specifications, as delivered by the producers of grinding tools, and the in-process behaviour of the tool is not possible. This prevents the implementation of databases for the selection of tools for specific workpiece materials and machining tasks. The long term goal of this cooperative research project is to initiate a new international standardisation for grinding tools with regard to their in-process properties. The short term goal is to deliver a method that allows producers and/or users to undertake a precise classification of their tools. The development of a quick-test method for the characterisation of the in-process properties of conventional grinding tools through a cooperative project between Germany (IWF) and Brazil (LMP and OPF) is the first step in the direction of a new and a more user-oriented international standardisation of grinding tools.

由于创新机床和加工策略的技术发展，传统的磨削工具不断要求更高的切削速度和更高的材料去除率。因此，磨削工具通常在其物理特性和能力的极限下使用。这导致砂轮性能的微小变化往往对磨削过程产生重大影响。因此，就其性能而言，磨削工具生产的可重复性以及对其过程行为的预测对于过程控制越来越重要。然而，迄今为止，用户对评价方法的要求尚未得到充分满足。因此，需要在国际基础上制定新的标准。多个项目和研究试图开发测试方法，但在预测进程内行为方面取得的成功有限。两种常见的策略是可区分的：物理和技术测试方法。在物理测试方法中，测量机械和材料相关参数，而不使磨削工具参与加工过程。在工艺检测方法中，是在规定的加工过程中对工件的工艺参数和加工结果进行检测，从而推断出磨具的特性。技术测试方法的优点是考虑了工艺、工具和工件的所有影响参数。由于磨具的复杂结构，磨具生产商提供的已知规格与磨具的过程行为之间的一般关联是不可能的。这阻止了为特定工件材料和加工任务选择工具的数据库的实现。这一合作研究项目的长期目标是为磨具在加工过程中的性能启动一项新的国际标准化。短期目标是提供一种方法，使生产者和/或用户能够对他们的工具进行精确分类。通过德国（IWF）和巴西（LMP和OPF）之间的合作项目，开发一种快速测试方法来表征传统磨削工具的过程特性，这是朝着新的和更以用户为导向的磨削工具国际标准化方向迈出的第一步。