A tool changer includes a holding member having a tool change arm, a rotating mechanism for rotating the holding member, a forward/backward moving mechanism for moving the holding member forward and backward, and a controller controlling the mechanisms. A zero return controller determines whether the tool change arm is holding tools. When it is not holding tools, the tool change arm is rotated to a predetermined non-interference angle, the tool change arm is translated to a forward/backward movement zero point, and the tool change arm is rotated to a rotation zero point. When it is holding tools, the tool change arm is translated to a forward end, the tool change arm is rotated to position it on an expected path, and the tool change arm is moved along the expected path, thereby moving the tool change arm to the rotation zero point and the forward/backward movement zero point.

A tool holding part holds two boring bars in a manner in which axes of the boring bars are parallel to a spindle axis. A tool change mechanism has a circular arc movement mechanism in which the boring bar moves from a tool holding position to a tool change position by at least a circular arc movement on a plane surface including an axis of the spindle in the tool change position and an axis of the boring bar positioned in the tool holding part.

Provided are a tool-gripping member, a tool magazine, and a machine tool. This tool-gripping member is provided to the tool magazine and grips a tool holder that supports a tool. A stand is fixed to a magazine base of the tool magazine and includes an engaging section with which the tool holder engages. A pair of claw members move pivotally around fulcrums provided to the stand, and sandwich and grip the tool holder while the tool holder is being engaged with the engaging section. The engaging section of the stand includes groove sections extending in a direction perpendicular to the left-right direction in which the pair of claw members face each other and the axial direction of the fulcrums.

An object of the present invention is to provide, in a machine tool, a tool changer that can quickly investigate and recover a stop of a change arm when a failure occurs during a change operation of a tool post and the change arm stops. In order to accomplish the object, this invention provides a tool changer provided in a machine tool and including a change arm 5 that performs a tool change operation from a first tool 2 of a tool post 1 to a second tool 4 of a replacement tool holder 3, wherein when an abnormality is detected during the tool change operation from the first tool 2 to the second tool 4, the tool change operation that has been stopped is performed in reverse order to return the change arm 5 to a state before the abnormality detection.

A machine tool changer includes a manipulator; a manipulator mounting arm; a manipulator mounting base; a manipulator rotation driving mechanism; a manipulator swinging driving mechanism; and a manipulator horizontal moving driving mechanism. The manipulator is mounted on the manipulator mounting arm, which is mounted with the manipulator rotation driving mechanism for driving the manipulator to rotate around a horizontal axis. The manipulator mounting arm is mounted on the manipulator mounting arm, which is mounted with a manipulator swinging driving mechanism for driving the manipulator mounting arm to swing around the horizontal axis. The manipulator mounting base is mounted with the manipulator horizontal moving driving mechanism for driving the manipulator mounting base to move horizontally to make the manipulator approach or move away from a machine tool spindle.

The present invention relates to a tool transport system for exchanging tools between a central tool magazine and one or more machine tools. A guided transport module P can be moved between different stops by means of a supporting guide. The transport module P has a transport platform PT with at least one tool transport strip E2 for holding a plurality of tools W. The transport platform PT is downwardly spaced apart, in the vertical direction, from the transport module P and from the supporting guide F.

The disclosure provides a method and system for injecting cutting fluid during milling under different working conditions. By analyzing influence of an airflow field in a milling area under different working conditions on injection of cutting fluid, an influence rule of a helical angle and a rotation speed of a cutter on the flow field is quantitatively analyzed, an optimal target distance of a nozzle, an angle between the nozzle and a milling cutter feeding direction and an angle between the nozzle and the surface of a workpiece are comprehensively determined, the nozzle is set according to a determined setting manner, and lubricating oil is sprayed to the milling area by utilizing the nozzle.

A processing machine includes a splash guard, a tool spindle that is provided inside a processing area and holds a tool, and an automatic tool changer that is movable between an internal-side tool changing position inside the processing area and a standby position outside the processing area and changes the tool held by the tool spindle at the internal-side tool changing position. The splash guard includes a cover body that is coupled to the automatic tool changer, defines and forms the processing area when the automatic tool changer is positioned at the standby position, and enters the processing area when the automatic tool changer moves from the standby position to the internal-side tool changing position.