Hydrostatic Guided Cylindrical Direct Drive for Lathes

为了降低生产成本，提高机床进给轴的动态性能是机床进给轴发展的一个关键方面。滚珠丝杠进给轴的可实现动力学受机械传动元件的限制。在具有直线直接驱动的轴的情况下，移动质量是限制因素。解决这一冲突的一种方法是使用直接驱动多坐标系。由于直接驱动两个运动轴，因此不需要串联轴布置。这允许减少移动质量，从而改善动力学。在分割的基础项目“机床的平面直接驱动”中，IFW展示了机床多坐标驱动的潜力。合作伙伴Franz Kessler GmbH和Gildemeister Drehmaschinen GmbH以及IFW被说服将这项技术转移到静压制导、直线旋转的直接驱动。其目的是创造一种进给驱动系统，它结合了静压导引的优点和直接驱动技术的优点，具有两个自由度的小运动质量。定向进给驱动模块是用于车削和铣削中心的B-Y轴。该项目的主要成果是移植了IFW开发的方法，并进一步研究了多坐标传动技术在机床精度、动力学、刚性和工业适用性方面的特点。

In order to reduce production costs, a key aspect in the development of machine tool feed axes is to enhance dynamics. The achievable dynamics of feed axes with ball screws are limited by the mechanical transmission elements. In the case of axes with linear direct drives the moving mass is the limiting factor. One way to resolve this conflict is the use of direct drive multi-coordinate systems. Due to the direct actuation of two axes of movement, a serial axis arrangement is not necessary. This allows to reduce the moving mass which leads to improved dynamics. In the divided fundamental project "Planar Direct Drive for Machine Tools", the IFW has shown the potential of a multi-coordinate drive for machine tools. The partners Franz Kessler GmbH and Gildemeister Drehmaschinen GmbH as well as the IFW are convinced to transfer this technology to a hydrostatic guided, linear-rotary direct drive. The aim is to create a feed drive system that combines the benefits of the hydrostatic guidance with the advantages of the direct drive technology with small moving masses in two degrees of freedom. The aimed feed drive module is an B-Y-axis for turning and milling centers. The main result of the proposed project is the transfer of the developed methods from IFW, and the further research on the characteristics of the multi-coordinate drive technology in terms of precision, dynamics, rigidity and industrial applicability in machine tools.