A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

A machine tool, which has a tool magazine for storing multiple tools and is for machining a workpiece with a tool held on a main shaft by moving the main shaft relative to the workpiece, wherein the machine tool is provided with: multiple feed shafts for moving the tool relative to the workpiece; a tool magazine drive motor for driving the tool magazine; and a manual pulse generator, which is for sending a positive or negative command pulse to the multiple feed shafts or tool magazine drive motor, the manual pulse generator being provided with a selection switch for selecting one of the multiple feed shafts or the tool magazine drive motor as the destination to which the command pulse is to be sent.

This method, for controlling a machine tool using a tool holder to which a coolant pipe is attached, includes: a step of detecting, in response to a signal indicating that a tool is prepared on a tool loading station of the machine tool, whether or not an abnormality has occurred in attaching the coolant pipe to the tool holder of the tool while the tool holder is at the tool loading station; and a step of issuing an alarm when the abnormality is detected in the step of detecting the occurrence of the abnormality.

The invention relates to a tool changing device (1) for a forming press (2), in particular a press brake, comprising at least one tool magazine (3, 4) and at least one transfer device (5, 6) for the transfer of the forming tools (7, 8) of the at least one tool magazine (3, 4), which are storable in the at least one tool magazine (3, 4), from the at least one tool magazine (3, 4) to the forming press (2) and in the reverse direction, wherein the at least one transfer device (5, 6) has a drivable thrust chain (9, 10) for the transmission of compressive and tensile forces.

A machine tool, which has a tool magazine for storing multiple tools and is for machining a workpiece with a tool held on a main shaft by moving the main shaft relative to the workpiece, wherein the machine tool is provided with: multiple feed shafts for moving the tool relative to the workpiece; a tool magazine drive motor for driving the tool magazine; and a manual pulse generator, which is for sending a positive or negative command pulse to the multiple feed shafts or tool magazine drive motor, the manual pulse generator being provided with a selection switch for selecting one of the multiple feed shafts or the tool magazine drive motor as the destination to which the command pulse is to be sent.

This method, for controlling a machine tool using a tool holder to which a coolant pipe is attached, includes: a step of detecting, in response to a signal indicating that a tool is prepared on a tool loading station of the machine tool, whether or not an abnormality has occurred in attaching the coolant pipe to the tool holder of the tool while the tool holder is at the tool loading station; and a step of issuing an alarm when the abnormality is detected in the step of detecting the occurrence of the abnormality.

An assembly including a tool (1) and packaging (2) for accommodating the tool (1). The tool (1) includes at least one machining head (3) for machining a workpiece (4), in particular a dental workpiece (4), by a machining unit (5), and a clamping portion (6) for securing the tool (1) in a chuck (7) of the machining unit (5) while the workpiece (4) is being machined. The tool (1) can be repeatedly removed from and placed back in the packaging (2), with the packaging (2) being provided with at least one securing device (11) for fastening the packaging (2) in a temporary tool magazine (12) of the machining unit (5).

A tool changer 10 includes a tool change arm 40 having tool holding portions 42, 52 at ends thereof, a support shaft supporting the tool change arm 40, a rotation mechanism including a rotation drive motor 25 and rotating the tool change arm 40 about an axis of the support shaft, a forward/backward movement mechanism including a forward/backward movement drive motor 13 and moving the tool change arm 40 forward and backward along the support shaft, and a mount base 11 having the rotation drive motor 25, the forward/backward movement drive motor 13 and the support shaft mounted thereon. The tool changer has a restraining member 60 provided thereon which restrains movement of the tool change arm 40 in a direction along the support shaft by engaging with the tool change arm 40 positioned at an original position.

The invention relates to a tool changing device (1) for a forming press (2), in particular a press brake, comprising at least one tool magazine (3, 4) and at least one transfer device (5, 6) for the transfer of the forming tools (7, 8) of the at least one tool magazine (3, 4), which are storable in the at least one tool magazine (3, 4), from the at least one tool magazine (3, 4) to the forming press (2) and in the reverse direction, wherein the at least one transfer device (5, 6) has a drivable thrust chain (9, 10) for the transmission of compressive and tensile forces.