Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: On a frame, a headstock and a tool rest are provided being free to relatively move so as to perform machining operations. The headstock is rotatably provided with spindle. The spindle is provided with a workpiece gripping means. One or more than one bar supporting means for movably supporting a bar stock in a predetermined feeding direction are provided at a predetermined position with respect to the spindle. A cutting means, for cutting the bar stock supported by the bar stock supporting means at a cutting position on the feeding direction side to the bar supporting means, is provided. A workpiece carrying means is provided being free to move relative to the headstock so as to deliver the workpiece produced by cutting of the bar stock with the cutting means to the workpiece gripping means of the spindle from the workpiece gripping means side to the spindle.

Abstract: A flexible manufacturing system which includes a stack yard, a machine tool and a stacker crane. In the stack yard, a pallet group, formed by stacking a number of pellets, is stored. The pallet group is transferred to a machine tool cell by the stacker crane. Each pallet has a memory, and data of the pallet itself and the member loaded on the pallet are memorized by the pallet. There are various kinds of members such as work-piece, tool and chuck jaw. These members are stored on exclusive pallets made for each kind of the member. Of the members, each tool and chuck jaw has its own memory and memorizes its own data. The data of all the memory can be read and written; therefore, the position of the pallet, tool and chuck jaw can be controlled at all times.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip, collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: A complex machine tool has a single frame having a chip collecting space at a center portion thereof, first and second spindle stocks on the frame, relatively free to move and drive in a Z axis direction and holding the chip collecting space therebetween, workpiece spindles on the spindle stocks free to rotate and drive and facing each other, and tool rests. The tool rests have turrets and can assume various kinds of movement. Complicated and varied types of machining can be performed combining the rotation control of the workpiece spindles and the spindle stocks.

Abstract: There are provided workpiece rotatably holding means for rotatably holding a pallet at a position opposite to a spindle, a pallet changer provided with a main body rotatably holded and formed with a plurality of wings arranged in a windmill shape, and workpiece supporting means for loading the pallet on each one of the wings, and an intermediate station for transferring a workpiece between the workpiece rotatably holding means and the pallet changer. The workpiece to be machined is loaded on each wing of the pallet changer, transferred to the workpiece rotatably holding means through the intermediate station and subjected to the machining there. After being machined, the workpiece is transferred back to the pallet changer through the intermediate station.

Abstract: The present invention relates to a lathe to which a long bar stock is automatically supplied by a simple construction utilizing the revolution of a main spindle. Pinch rollers having a hyperboloidal profile are disposed face to face and a circumferential surface of a bar stock is pinched by the pinch rollers. The pinch rollers each have a driving roller concentric therewith and are rotated as one unit. The distance between the opposed pinch rollers can be adjusted to correspond to the diameter of the bar stock. The driving rollers are rotated by rotation of the main spindle for feeding the bar stock in the axial direction by the resulting rotation of the pinch rollers.