与用于制备纱线端部（9），用于在一个转子纺纱装置纺纱的方法中的（2）的转子纺纱机（1）具有转子壳体（3）做了可以用盖封闭的（4），并且可以是 通过负压通道经受负压（8）用纺纱转子（5）那样可转动地安装在转子壳体（3）中并用旋转（在纺丝操作地连同一个牵引喷嘴期间操作转速 7）中，纱线端部（9）来制备被引入负压力通道（8），和由旋转纺纱转子（5）的开口边缘的切割结构（10）中断，并且由此制备 用于纺制英寸在纱线端部（9），纺纱转子（5）被驱动以用于纱线端的制备限定的转速的中断，而对于纱线端的制备转速要么等于 到纺纱转子的运行转速（5）或小于该操作 纺纱转子的旋转速度（5）。 对应的转子纺纱机（1）设有控制单元（17）借助于该转子纺纱装置（2）能够在雅舞的preceding-权利要求之一来操作。

In a method for preparing a yarn (9) for piecing to a rotor spinning device (2) of a rotor spinning machine (1) with a with a lid (4) closed and a negative pressure channel (8) with a vacuum loadable rotor housing (3), with a rotatably mounted in the rotor housing (3) and rotating at an operating speed during the spinning operation of the spinning rotor (5) and with a draw-off nozzle (7) which is to be prepared yarn (9) is introduced into the vacuum channel (8) and by a partition structure (10) of the interrupted open edge of the rotating spinning rotor (5) and characterized vorbereitetet for piecing. The spinning rotor (5) is driven during the interruption of the yarn (9) with a defined yarn ends Preparation speed, the yarn ends Preparation speed either equal to the operating speed of the spinning rotor (5) or lower than the operating speed of the spinning rotor (5). A corresponding rotor spinning machine (1) comprises a control unit (17), by means of which is operable in accordance with one of the preceding claims, the rotor spinning device (2).