A tool changing device for a machine tool comprises a handling unit comprising a handling robot, an interchangeable tool magazine, and a provisioning site for the tool magazine. The handling unit comprises a tool gripper for gripping tools. The tool magazine is configured as an upright disk magazine with a vertical rotation axis. The tool magazine is detachably mounted at the provisioning site on a rotary table that is rotatable to provide a desired rotational position of the tool magazine for a tool change in which a selected tool location in the tool magazine is accessible for the tool gripper of the handling unit. The handling unit is adapted to change tools between the tool magazine and a tool holder in a workspace of the machine tool. The handling unit and the tool magazine are arranged in a setup cell of the tool changing device, which is arranged to be coupled to the workspace of the machine tool via a closable setup interface. The handling robot is adapted to move the tool gripper through the setup interface into the workspace to change tools there. A manufacturing system includes a machine tool and a tool changing device.

The invention relates to a machine tool (100) for machining a workpiece, said machine tool (100) comprising a machine table (10) for clamping the workpiece, a work spindle (20) for receiving a tool for machining the workpiece, a work space (70) substantially defined by the machine table (10) and at least one first cover (30), and a tool changer (50) arranged outside the work space (70) and configured to change the tool received in the work spindle (20), wherein the machine tool (100) is further configured such that, during a tool change, the first cover (30) is moved, as a result of which the work space (70) of the machine tool (100) is expanded by a tool changing area (80) and an access surface (42), through which the tool changer (50) can be moved into the tool changing area (80), is exposed, and the work spindle (20) is positioned in the tool changing area (80) such that the tool changer (50) is able to change the tool received by the work spindle (20) within the tool changing area (80).

A tool changer is used for changing tools in a machine tool. The tool changer has a support structure on which a lifting carriage is guided along a vertical lifting direction. A pivot arm is pivotably mounted to the lifting carriage about a vertical pivot axis. A plurality of tool holders arranged vertically one above the other form a tool magazine. A tool gripper is attached to the pivot arm. The tool gripper grips a tool. The tool is subsequently moved between one of the tool holders and the tool spindle of the machine tool by a combined lifting and pivoting movement of the pivot arm. Optionally, an auxiliary arm pivotably attached to the pivot arm can be used to change a workpiece clamping means of the machine tool.

A dental milling machine comprising a workpiece holder (2) and a changer arm (10) is characterized in that the changer arm (10) has a substantially U-shaped gripping attachment (12) and in that a tool (14) of the dental milling machine (1) has a tool fixation element (16). The tool fixation element has grooves (18) or holding projections at two mutually opposed positions which face away from each other, over which grooves or holding projections the U-shaped gripping attachment (12) of the changer arm (10) can engage, wherein parts of the U-shaped gripping attachment (12), more particularly the side flanks (12a, 12b) of the U-shaped gripping attachment (12), make contact with the grooves (18) or holding projections of the tool fixation element (16) under preload.

The invention relates to a machining device for the machine-assisted production and machining of dental workpieces (16), particularly of artificial teeth and/or other dental replacement parts, the at least one workpiece (16) being clamped in at least one workpiece retainer (11) which can be raised, lowered and rotatably driven, is positioned on a rotational axis (9), and, for the purpose of machining, feeds said workpiece (16) to at least one tool spindle (4, 5, 6) that is rotationally driven and has a tool (7) secured thereto, an additional tool retainer (2, 2a, 2b) with a plurality of tools (7) arranged thereupon being associated with said workpiece retainer (11, 11a, 11b) and lying opposite on one side thereof, and a workpiece changer (22, 22a, 22b) which receives the workpieces (16, 16a, 16b, 16c) to be machined, such that they can be exchanged, being arranged on the other side of said workpiece retainer (11, 11a, 11b).

An automatic tool changer includes a cover that partitions a machining area and a non-machining area, and an opening/closing member that opens/closes an opening of the cover by turning in synchronization with rotation of a tool changer magazine. The opening/closing member includes a plate section partitions the machining area and the non-machining area at a position of the opening of the cover. In a case where the tool changer magazine performs tool replacement with respect to a tool storage magazine, the plate section closes the opening of the cover by taking a horizontal posture. In a case where the tool changer magazine performs tool replacement with respect to a main spindle, the plate section opens the opening of the cover by changing its posture from the horizontal posture to an inclined posture or a vertical posture.

A machine tool includes a spindle including a tool insertion portion having a shape of an opening into which a shank of a tool is inserted and configured to attach the tool thereto, a tool change unit configured to change the tool attached to the spindle while gripping the tool, an air supply unit configured to supply air to a gap between the tool insertion portion and the shank of the tool when the tool change unit changes the tool, and a controller configured to control driving of at least any one of the spindle and the tool change unit to allow the tool and the tool insertion portion to reciprocate relative to each other in a predetermined direction with the shank of the tool inserted into the tool insertion portion and with a gap provided between the tool insertion portion and the shank of the tool.

A tool changer includes a holding member having a tool change arm disposed thereon, a rotation mechanism rotating the holding member at a first rotation speed in normal and reverse directions, a forward/backward movement mechanism moving the holding member forward and backward at a first forward/backward movement speed, and a controller comparing a first difference as a difference between a command value for the rotation and an output value of an encoder with a first threshold. When the first difference is equal to or greater than the first threshold, a rotational speed of the holding member is chained to a second rotation speed slower than the first rotation speed. Alternatively, when the first difference is less than the first threshold, the rotational speed of the holding member is maintained at the first rotation speed.

A blade replacing device used in a cutting apparatus includes a holding section that detachably holds one surface side of a cutting blade, a moving section that relatively advances and retracts the holding section with holding the cutting blade relative to a spindle in an axial direction of the spindle, and positions the holding section at least at a mounting position at which the other surface of the cutting blade is equal to or less than a predetermined distance from a flange section of a blade mount, and at a released position at which the cutting blade is spaced from the blade mount, and a thickness information acquisition section for acquiring information concerning a thickness of the cutting blade. The mounting position of the holding section is adjusted according to the thickness of the cutting blade acquired by utilizing the thickness information acquisition section.

A tool magazine includes a magazine arm and a gripper plate. The magazine arm has a tool pot to hold a tool. The magazine arm is pivotable around a pivotal axis such that the tool pot pivots around the pivotal axis. The gripper plate has at least one gripper to hold the tool at a holding position on a circular arc track along which the tool moves when the magazine arm pivots. The at least one gripper is open in a tangent direction of the circular arc track at the holding position.