The present invention is directed to a driving tool (1) for driving a rod (R) in rotation, comprising two stators (10, 20), two rotors (11, 21), two connexion means (12, 22) and a driving element (3) connected to the two connection means (12, 22), wherein the driving element (3) is elastically deformable, and wherein the relative angular position of the two rotors can be modulated. The present invention also covers a machine (M) comprising such a driving tool (1) as well as a method of machining a rod (R) using the same.

An intelligent production line for turning tool bit cavities and an application method are provided, which solve the problem that a production line in the prior art has low working efficiency. The intelligent production line has the beneficial effects of a compact arrangement structure, higher safety and improved working efficiency. The intelligent production line for turning tool bit cavities includes a robot. Material tables and at least one machining center are arranged around the robot. A transfer station used for transferring materials is arranged between the machining center and the robot. A protective fence is arranged between a position above the material tables and the robot, and between the transfer station and the robot. The robot is provided with a mechanical arm including a base plate. The base plate is provided with at least one clamping jaw and fixed with a laser detecting unit for detecting the materials.

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.

A guide device for bars to be fed to a machine tool includes first holding and guide arrangement and second holding and guide arrangement, arranged to define an advancement zone for the bars that extends according to a longitudinal axis. The first holding and guide arrangement and the second holding and guide arrangement are configured to establish one or more contact zones with the bar, so as to hold in position and guide the bar along the advancement zone. The first holding and guide arrangement and the second holding and guide arrangement extend parallel to the axis and are positioned on sides mutually opposite the longitudinal axis. The first holding and guide arrangement and the second holding and guide arrangement are relatively movable between a rest position, in which the first and the second holding and guide arrangement are at a greater mutual distance and at furthest positions from the advancement zone to allow the positioning of said bar to be guided along the advancement zone, and an engagement position, in which the first and the second holding and guide arrangement are at a lesser mutual distance and nearer the advancement zone so as to come into contact with the bar, adapting to different diameter values of the bar.

A machine tool comprises a machine frame, a first spindle having a first workholder rotatable about a first axis, a second spindle having a second workholder rotatable about a second axis, a first tool carrier for machining one side of a workpiece in the first spindle, and a second tool carrier for machining a different side of a workpiece in the second spindle. The second spindle is arranged on a spindle carrier movable relative to the machine frame, using a carriage system, in parallel with and transversely to the first axis. The second workpiece spindle is pivotal on the spindle carrier, using a pivoting device, about a pivot axis that extends perpendicularly to a movement plane. The second tool carrier is positioned on a guide carriage movable relative to the machine frame in parallel with the pivot axis. A drag frame conveyor is provided to feed or transport workpieces.

A machine tool system capable of decreasing the operator's burden in setting the parameters. A machine tool system includes a working machine capable of machining a bar and a bar feeder capable of delivering the bar to the working machine according to the machining of the bar. The bar feeder delivers the bar in accordance with a set parameter. The bar feeder updates the parameter according to parameter information transmitted from the working machine.

A lathe system includes a spindle capable of gripping a bar and moving back and forth in an axial direction of the bar and a tool post to which a first tool is attached. The lathe system can manufacture a plurality of products having an identical shape from the bar by repeating a machining of the bar, a cutting off of a machined portion of the bar, and a grip change by the spindle, the grip change by the spindle comprising releasing the bar, moving back, and re-gripping the bar at a predetermined gripping position. The lathe system further includes a gripping position selecting unit capable of selecting a special gripping position at which the spindle re-grips the bar when a state of the machine tool system meets a predetermined condition, the special gripping position being different from the predetermined gripping position.

A bar feeding device, for example for a lathe, and a process for using a bar feeding device This bar feeding device comprises: a base extending lengthwise, a channel cover extending lengthwise and rotatably connected to the base, a guiding member comprising a guiding channel extending lengthwise, a pusher flag, a mover, such as an endless chain, fastened to a first end of the pusher flag and able to move the pusher flag lengthwise, a push bar able to move within the guiding channel and fastened to a second end of the pusher flag. The channel cover comprises at least one displaceable member and an displacer for actively displacing the displaceable member relative to the channel cover.

An intelligent production line for turning tool bit cavities and an application method are provided, which solve the problem that a production line in the prior art has low working efficiency. The intelligent production line has the beneficial effects of a compact arrangement structure, higher safety and improved working efficiency. The intelligent production line for turning tool bit cavities includes a robot. Material tables and at least one machining center are arranged around the robot. A transfer station used for transferring materials is arranged between the machining center and the robot. A protective fence is arranged between a position above the material tables and the robot, and between the transfer station and the robot. The robot is provided with a mechanical arm including a base plate. The base plate is provided with at least one clamping jaw and fixed with a laser detecting unit for detecting the materials.

An intelligent production line for turning tool bit cavities and an application method are provided, which solve the problem that a production line in the prior art has low working efficiency. The intelligent production line has the beneficial effects of a compact arrangement structure, higher safety and improved working efficiency. The intelligent production line for turning tool bit cavities includes a robot. Material tables and at least one machining center are arranged around the robot. A transfer station used for transferring materials is arranged between the machining center and the robot. A protective fence is arranged between a position above the material tables and the robot, and between the transfer station and the robot. The robot is provided with a mechanical arm including a base plate. The base plate is provided with at least one clamping jaw and fixed with a laser detecting unit for detecting the materials.