Thread whirling device and a tool for installing a whirling ring

A thread whirling device comprising:

• a housing;
• a driven, hollow spindle rotatably supported within the housing,
• a whirling ring that is arranged in the hollow spindle, and
• a bayonet ring rotatably supported on the whirling ring and including at least one lug, the bayonet ring joining the hollow spindle and the whirling ring to each other by a bayonet connection;
• wherein fasteners are disposed within internal threads in the bayonet ring;
• wherein when turned the fasteners contact the whirling ring and generate a separating force that separates the whirling ring from the bayonet ring, such that a first contact face on the whirling ring presses against a complementary first contact face within a groove in the hollow spindle, and such that a second contact face on the bayonet ring presses against a complementary second contact face within the groove in the hollow spindle.