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A new method for reliable rotary tool shank use at speeds above the critical speed range

机译：一种可靠的旋转工具柄在临界速度范围高于速度的新方法

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Dynamic tool characteristics affect both the design and the use of rotary tools applied to high-speed cutting. At present, spindle-driven tools commonly operate at speed values below their critical bending speed. Currently, this is the only way to guarantee reliable tool operation. Consequently, the low natural frequency-in particular for tools with a high length-to-diameter ratio-often results in spindle speeds that utilise neither the cutting materials' nor the machine tools' potential. The paper elucidates a method to design tool shanks and tools to be run above the critical speed, as well as its implementation. The reliable and safe operation of these special tool shanks is based on the physical effects of self-centering and self-balancing, which come into play above the critical speed.
机译：动态刀具特性影响了适用于高速切割的旋转工具的设计和使用。目前，主轴驱动的工具通常以低于其临界弯曲速度的速度值运行。目前，这是保证可靠工具操作的唯一方法。因此，特别是对于具有高长度直径比的工具的低固有频率 - 通常导致主轴速度，其既不利用切削材料'也不是机床的电位。本文阐明了一种设计刀柄和工具的方法，以高于临界速度，以及其实现。这些特殊工具柄的可靠和安全的操作基于自我中心和自平衡的物理效果，以高于临界速度。

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