Countersinking tool

A countersinking arrangement for machining a workpiece, the countersinking arrangement comprising:

• a countersinking tool that comprises a cutting section for countersinking and/or deburring an opening of a bore in the workpiece;
• a stop that comprises a contact surface and a connecting element, the stop arranged on the countersinking tool;
• and
• a coupling section for separately connecting to a coupling element in order to transmit torque to the countersinking tool,
• the stop configured such that when the countersinking arrangement is positioned for machining a workpiece:
• the contact surface contacts a surface of the workpiece once a predetermined machining depth in the workpiece is reached;
• and
• the connecting element (a) is in direct sliding contact with the cutting section, (b) positions the stop relative to the cutting section and (c) reduces or prevents transmission of torque from the cutting section to the stop, so that friction between the contact surface and the surface of the workpiece can prevent relative movement between the contact surface and the surface of the workpiece;
• the coupling section on a side of the contact surface to which the contact surface faces.

A countersinking device for countersinking and/or deburring an opening of a through-bore in a workpiece, wherein the countersinking device comprises:

• a countersinking arrangement;
• and
• a coupling element,
• the countersinking arrangement comprising a cutting section, a stop, and a first coupling section,
• the stop comprising a contact surface and a connecting element,
• the countersinking device configured such that when it is positioned for machining a workpiece:
• the contact surface contacts a surface of the workpiece once a predetermined machining depth in the workpiece is reached,
• the connecting element (a) is in direct sliding contact with the cutting section,
• (b) positions the stop relative to the cutting section and (c) reduces or prevents transmission of torque from the cutting section to the stop, so that friction between the contact surface and the workpiece surface can prevent relative movement between the contact surface and the surface of the workpiece,
• the coupling element comprising a second coupling section, the first coupling section configured to be separably connected to the second coupling section,
• the first coupling section comprising a constriction or a groove,
• the second coupling section comprising a channel with a ball,
• the constriction or groove configured to receive the ball to lock the coupling element to the first coupling section.