A loading device adapted to be provided in a machine tool includes a rail portion and a loader configured to travel along the rail portion, wherein the loader includes a pivoting portion and an arm portion extending and contracting with respect to the pivoting portion, and the arm portion includes a hand portion that holds a workpiece.

A workpiece exchange device, including: a workpiece spindle; and a workpiece library, wherein: the workpiece spindle is arranged on a pallet, the pallet is arranged on a slide table, the pallet can move along a Z axis of a machine tool, and the slide table can move along an X axis of the machine tool; and the workpiece library is used to store workpieces, and the workpiece spindle can move along the X-axis and Z-axis of the machine tool and grab a workpiece. The present invention also discloses a method for exchanging workpieces. Through the coordinated movement of the slide table and the pallet, the workpiece spindle can take out a workpiece to be machined from the workpiece library or return a machined workpiece into the workpiece library. The present invention uses a machine tool coordinate system to grab the workpiece with high precision and high speed, and does not need to add an auxiliary mechanism, and has the advantages of simple structure, high stability and good reliability.

Provided a full-automatic wheel hub feeding-blanking system for intelligent production line of automotive wheel hubs, comprising: an intelligent material rack and a robot; the intelligent material rack comprises a bracket assembly, a turntable assembly and a bearing seat assembly; the turntable assembly being rotatable is mounted on the bearing seat assembly; the bracket assembly mounted on the turntable assembly comprises a base provided with at least one group of lifting devices, and each the group comprises three the lifting devices, and each of which an automotive wheel hub supporting plate assembly is provided on, central axis of the three automotive wheel hub supporting plate assemblies forming the angle of 120 degrees; the robot being mounted on one side of the intelligent material rack and comprises a robotic arm, and a manipulator is mounted on the robotic arm, and the manipulator is used for clamping the automotive wheel hub.

A machine tool includes a headstock that holds a workpiece, a tool post that is movable in a first axis direction parallel to a workpiece rotation axis and in a second axis direction orthogonal to the first axis and holds a tool, an in-machine robot, an opening for communicating the inside and the outside of a working chamber, and a door that opens and closes the opening. The robot includes a root joint fixed in the working chamber and a link unit positioned on a distal end side of the root joint. The root joint is a linear-motion joint extendable in a direction orthogonal to the workpiece rotation axis, and is a linear-motion joint extendable between the length for causing the entire link unit to be positioned inside the working chamber and the length for causing the entire link unit to be positioned outside the working chamber.

An NC lathe including a first spindle, a second spindle capable of holding a cut-off workpiece delivered from the first spindle, a second tool post on which a plurality of tools are attachable to machine the workpiece held by the second spindle, a product receiver provided on the second tool post, a Y2-axis motor capable of moving at least one of the second tool post and the second spindle in a Y2-axis direction, and an X2-axis motor capable of moving at least one of the second tool post and the second spindle in an X2-axis direction. The second tool post has a plurality of tool mounting parts where the tools are attachable. The tool mounting parts are aligned at intervals in the Y2-axis direction. At least one of the tool mounting parts is arranged in a position overlapping the product receiver with respect to the X2-axis direction.

A machine tool capable of reducing the time required to transfer a workpiece includes a spindle chuck provided to a spindle that rotates about an axis, and capable of holding a workpiece to be worked on, a temporary placement chuck capable of holding a workpiece, a tool post driver to move the temporary placement chuck relatively to a facing position in which the spindle-side workpiece holder and the workpiece holder for temporary placement are able to transfer or receive a workpiece to or from each other, and to a separated position in which the spindle-side workpiece holder and the workpiece holder for temporary placement are able to transfer or receive a workpiece individually, and a loader including a spindle-corresponding workpiece holder and a temporary placement-corresponding workpiece holder disposed to face the spindle chuck and the temporary placement chuck in the separated position, respectively.

The present invention relates to a handling apparatus 1 for use at a machine tool, comprising: a base body 2 which can be set up on a floor space, a storage body 3 which can be set up on the top side of the base body 2 and serves to store a plurality of workpieces or tools, and a handling robot 5, which is arranged on the base body 2 and has a gripper device 6 for receiving a workpiece and/or tool from the storage body 3 and for inserting the workpiece and/or tool taken from the storage body 3 by the gripper device 6 into a corresponding workpiece and/or tool support of the machine tool. A plurality of first set-up elements 18 are arranged on the bottom side of the storage body 3 and a plurality of first centering elements 19 are arranged on the top side of the base body 2, wherein, when the storage body 3 is set up on the top side of the base body 2, the first set-up elements 18 interact in each case in pairs and in self-centering manner with the first centering elements 19 in such a way that the storage body 3 adopts a predetermined reference position in relation to the base body 2.

A workpiece supply device is provided that is capable of supplying a workpiece to be machined next in a supplying area of the workpiece outside a machining area while the machining area is closed to control scattering of cutting fluid from the machining area during the machining of the workpiece. A machine tool includes a machining room of the workpiece, a loader room, a dividing wall having an opening part, a main spindle, a workpiece supply device, a delivery device, and an ejection device. The workpiece supply device includes a workpiece holder, a movement mechanism, a cover member, and a coil spring. The coil spring biases the cover member to close the opening part by the cover member such that the workpiece holder holds the workpiece in the loader room during the machining of the workpiece in the machining room.

A bar material supplying device includes a feed rod having a leading end provided with a finger chuck, a feed rod servomotor and an air cylinder device that move the feed rod in a longitudinal direction to insert and pull the bar material into and from the finger chuck, and an NC device that controls driving of the feed rod servomotor and driving of the air cylinder device. The NC device controls the driving of the feed rod servomotor and the driving of the air cylinder device to move the feed rod in an operation of inserting and pulling the bar material into and from the finger chuck, and operates as an error allowable device that allows an error of an operation amount of the feed rod servomotor motor in the operation of inserting and pulling the bar material into and from the finger chuck.

An automatic workpiece conveyance machine configured to perform centering without the addition of new mechanical structures, comprising: a workpiece gripping device configured to grip a workpiece between the workpiece gripping device and a receiving chuck of a work machine; a workpiece delivery device having a moving mechanism for moving the workpiece gripping device on a centering plane orthogonal to the center axis of the receiving chuck; and a control device, configured to control the driving of the receiving chuck and the workpiece gripping device, and configured to identify the centering position based on torque generated in a positioning motor constituting the workpiece delivery device with one of the receiving chuck and the workpiece gripping device, gripping the workpiece, while the other one gripping and releasing the workpiece.