Application potential of articulated coupled drive and guide elements for increase of movement dynamics and accuracy

铰接式驱动和引导元件在提高运动动态性和精度方面的应用潜力

• 批准号: 269296582
• 负责人: Professor Dr.-Ing. Steffen Ihlenfeldt
• 金额: --
• 依托单位: Institut für mechatronischen Maschinenbau
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/269296582?language=en
• 关键词: Application; potential; articulated; coupled; drive

The trend for cutting machine tools towards increasing dynamics for both conventional feed axes as well as machines for high-speed cutting (HSC) leads to significantly higher inertia forces in relation to the process forces. One approach for solving this dynamic problem is to use multiple drives per axis (parallelization). Profile rail guides and ball screws are established as standard machine elements in many areas of engineering, particularly in machine tool engineering, for guides and drives of linear axes. They are designed in such a way that they allow motion only in guide direction, feed direction, and about the feed axis. When combining them to one feed axis, even small form deviations and/or deviations regarding the elements position to each other lead to mechanical tensions. In order to ensure high quality of motion and reduce mechanical stresses due to overdetermination, very small manufacturing and assembly tolerances are required. However, lowering these manufacturing and assembly tolerances has technical and/or economic limits. The in-control correction is one potential solution for reducing the motion error by using parallelized drive axes. The method requires articulate structural connections to attach drive and guide elements to the structure. In machines with parallelized drives, such as servo spindle presses with a plurality of spindles or tool machines with gantry drives, additional mechanical overdetermination occurs in the direction of motion. For this problem articulate structural connections are also potential solutions. Objective of the proposed research project is, therefore, to fundamentally and systematically investigate the potential of parallel drives with articulated drive and guide elements to increase dynamics by mechanically decoupling parallel drive axes and to improve accuracy by correcting motion errors. In order to achieve these goals, parametric machine models with parallel drives for analyzing representative axis configurations and structural dimensions in digital block simulations are developed. By means of these models, which consist of drives, controllers, and elastic structural components, and a systematic variation of the main influences, a study is conducted which allows for determining the requirements and limits of application of parallel drives with articulate connections between drive and guide elements and the structure for isolation and correction purposes.

切削机床的趋势是增加传统进给轴以及高速切削（HSC）机床的动态，这导致惯性力相对于加工力显著增加。解决这个动态问题的一种方法是在每个轴上使用多个驱动器（并行化）。在许多工程领域，特别是机床工程中，轮廓导轨和滚珠丝杠被确立为标准机械元件，用于直线轴的导轨和驱动。它们被设计成仅允许在导向方向、进给方向和围绕进给轴运动。当将它们组合到一个进给轴时，即使是小的形状偏差和/或关于元件彼此位置的偏差也会导致机械张力。为了确保高质量的运动并减少由于超定而产生的机械应力，需要非常小的制造和组装公差。然而，降低这些制造和组装公差具有技术和/或经济限制。控制校正是通过使用平行化驱动轴来减小运动误差的一种潜在解决方案。该方法需要铰接的结构连接以将驱动和引导元件附接到结构。在具有并行驱动器的机器中，例如具有多个主轴的伺服主轴压力机或具有龙门驱动器的工具机，在运动方向上发生额外的机械超定。对于这个问题，铰接结构连接也是潜在的解决方案。因此，拟议的研究项目的目的是从根本上和系统地研究具有铰接驱动和引导元件的并联驱动器的潜力，以通过机械解耦并联驱动轴来增加动态，并通过校正运动误差来提高精度。为了实现这些目标，开发了用于在数字块仿真中分析代表性轴配置和结构尺寸的具有并联驱动的参数化机器模型。通过这些模型，其中包括驱动器，控制器，和弹性结构部件，和系统的主要影响的变化，进行研究，允许确定的要求和限制的应用程序的并联驱动器之间的铰接连接的驱动器和引导元件和结构的隔离和校正的目的。