Tool for a collaborative robot, comprising - a tool housing; - a robot flange for attaching the tool to a tool holder of the robot; - a tool drive; - a tool insert holder for receiving an exchangeable tool insert; - a tool insert which can be fastened to the tool insert holder; - a drive shaft secured against rotation for transmitting a drive torque from the tool drive to the tool insert holder together with the tool insert, wherein the drive shaft is mounted so as to be displaceable in its axial direction during the rotary movement for transmitting the drive torque; wherein - the tool insert holder together with the tool insert is movably coupled to the tool drive by means of the drive shaft and is mounted so as to be displaceable in the axial direction by a stroke length between a retracted home position and an extended working position of the tool insert holder; - a collision protection device with a position detection means, which is connected to a control device in a signaling manner; - a collision protection cover which is arranged at a free end of the tool coaxially to the axial direction of the tool insert and within which the tool insert is located in the basic position of the tool insert holder; wherein - the collision protection cover is mounted movably in relation to the tool housing; wherein - in the event of a collision contact (K1, K2) with the collision protection cover, a change in position in the axial direction can be detected by the position detection means and the collision protection device is set up to activate a tool stop setting means for stopping the tool drive in the event of a change in position, the tool insert holder moving back into its basic position and the tool insert being located in this basic position within the collision protection cover, characterized in that - the collision protection device has a 2-channel monitoring system with a first and a second position detection means, which is connected to a programmable logic controller by means of signals; - the collision protection cover is coupled in terms of movement to a plunger which is displaceably mounted in the axial direction; wherein - in the event of collision contact (K1, K2) with the collision protection cover, a change in position of the ram can be detected by at least one of the two position detection means (41, 42); and - a tool-release means is provided for resuming the tool drive when the tool-stop-setting means is activated for fault acknowledgement, wherein the tool-release means can be actuated by a person. - a tool housing; - a robot flange for attaching the tool to a tool holder of the robot; - a tool drive; - a tool insert holder for receiving an exchangeable tool insert; - a tool insert which can be fastened to the tool insert holder; - a drive shaft secured against rotation for transmitting a drive torque from the tool drive to the tool insert holder together with the tool insert, wherein the drive shaft is mounted so as to be displaceable in its axial direction during the rotary movement for transmitting the drive torque; wherein - the tool insert holder together with the tool insert is movably coupled to the tool drive by means of the drive shaft and is mounted so as to be displaceable in the axial direction by a stroke length between a retracted home position and an extended working position of the tool insert holder; - a collision protection device with a position detection means, which is connected to a control device in a signaling manner; - a collision protection cover which is arranged at a free end of the tool coaxially to the axial direction of the tool insert and within which the tool insert is located in the basic position of the tool insert holder; wherein - the collision protection cover is mounted movably in relation to the tool housing; wherein - in the event of a collision contact (K1, K2) with the collision protection cover, a change in position in the axial direction can be detected by the position detection means and the collision protection device is set up to activate a tool stop setting means for stopping the tool drive in the event of a change in position, the tool insert holder moving back into its basic position and the tool insert being located in this basic position within the collision protection cover, characterized in that - the collision protection device has a 2-channel monitoring system with a first and a second position detection means, which is connected to a programmable logic controller by means of signals; - the collision protection cover is coupled in terms of movement to a plunger which is displaceably mounted in the axial direction; wherein - in the event of collision contact (K1, K2) with the collision protection cover, a change in position of the ram can be detected by at least one of the two position detection means (41, 42); and - a tool-release means is provided for resuming the tool drive when the tool-stop-setting means is activated for fault acknowledgement, wherein the tool-release means can be actuated by a person.