Abstract: The present invention provides a machine tool whose width dimension is not increased even when it includes a tool magazine. The present invention includes: a bed; a saddle disposed on the bed to be movable in a forward and backward (Y-axis) direction in a front view of the machine tool; a table disposed on the saddle to be movable in right and left (X-axis) direction; a column fixed on the bed a spindle head disposed on the column to support a spindle and movable in a vertical (Z-axis) direction; an automatic tool changer disposed on a back face side of the column, wherein the column has an opening which allows the back face side and a front face side of the column to communicate with each other, and the automatic tool changer replaces a tool on the spindle side by a tool on a tool magazine side through the opening.

Abstract: The present invention provides a machine tool capable of achieving a higher feed rate of a spindle and weight reduction while ensuring necessary stiffness of a column. The present invention includes: a bed; a saddle disposed on the bed to be movable in a Y-axis direction in a front view of the machine; a table disposed on the saddle to be movable in an X-axis direction; a column having a shape of a gate that is bridged over a travel range of the table and has right and left legs fixed on the bed and a beam connecting tops of the right and left legs; and a spindle head disposed on a front face of the beam to be movable in a Z-axis direction.

Abstract: The present invention provides a machine tool capable of enhancing approachability to a spindle to improve work efficiency even when it includes a workpiece changer. The present invention includes: a bed; a saddle disposed on the bed to be movable in a forward and backward (Y-axis) direction in a front view of the machine tool; a table disposed on the saddle to be movable in a right and left (X-axis) direction; a column having a shape of a gate bridged over a travel range of the table and fixed on the bed; a spindle head disposed on the column to support a spindle and movable in a vertical (Z-axis) direction; a workpiece changer that turns a workpiece together with a pallet or turns the workpiece independently, for workpiece replacement, between a workpiece standby position set on a back face side of the bed and the table placed at a workpiece change position, the workpiece changer being disposed so as to set the workpiece change position at a position under the column.

Abstract: The present invention provides a machine tool capable of enhancing approachability to a spindle to improve work efficiency even when it includes a workpiece changer.

Abstract: The present invention provides a machine tool whose width dimension is not increased even when it includes a tool magazine. The present invention includes: a bed 2; a saddle 4 disposed on the bed 2 to be movable in a forward and backward (Y-axis) direction in a front view of the machine tool; a table 5 disposed on the saddle 4 to be movable in right and left (X-axis) direction; a column 3 fixed on the bed 2; a spindle head 6 disposed on the column 3 to support a spindle 7 and movable in a vertical (Z-axis) direction; an automatic tool changer 10 disposed on a back face side of the column 3, wherein the column 3 has an opening A which allows the back face 3b? side and a front face 3b? side of the column 3 to communicate with each other, and the automatic tool changer 10 replaces a tool T on the spindle 7 side by a tool T1 on a tool magazine 11 side through the opening A.

Abstract: The present invention provides a machine tool capable of enhancing chip discharge efficiency and improving work efficiency with improved approachability to a spindle. A machine tool according to the present invention is structured such that a recession 2c with a back face side and an upper face side thereof opened is formed at a center portion of a bed 2, Y-axis guide rails 18 and Y-axis ball screws (drive shafts) 16 for guiding and driving the saddle 4 are disposed on right and left saddle supports (edges) 2b of the recession 2c and are covered with right and left Y-axis cutting covers 56, the right and left Y-axis cutting covers 56 are formed in an inclined shape with the recession 2c side thereof becoming lower, and a chip receptor 48 for discharging chips dropped into the recession 2c to a back face side of the bed 2 is disposed in the recession 2c.

Abstract: A transflective-type liquid crystal display device, comprising, at least, a pair of substrates, and a liquid crystal material disposed between the pair of substrates. The liquid crystal material is a polarization-shielded smectic liquid crystal material capable of providing a tunable birefringence system wherein the magnitude of anisotropy of the refractive index of the liquid crystal layer can be regulated by the intensity of an applied electric field.

Abstract: A method of injecting liquid crystal material, which is capable of efficiently injecting a liquid crystal material having a high viscosity at room temperature, such as smectic-phase liquid crystal material while maintaining a high throughput, a seal pattern that can be preferably used for the method, and an apparatus for injecting liquid crystal material.

Abstract: There is provided a machining center capable of corresponding to both horizontal and vertical turret heads by one machine main body. The machining center includes a bed 2, a column 3 fixed on the bed 2, a saddle 4 supported by the column 3 to be movable in an X axis direction, a turret base supported by the saddle 4 to be movable in a Y axis direction, a quill 6 supported by the turret base 5 to be movable in a Z axis direction, and one of a horizontal turret head 20 and a vertical turret head 50 which are attached to the quill 6 in a selectively attachable/detachable manner, in which, on the horizontal turret head 20, a plurality of tools T are arranged to be located on a circumference whose center coincides with a quill axis C and to be parallel with the quill axis C, and on the vertical turret head 50, a plurality of tools are arranged to form a radial pattern in an orthogonal direction with respect to the quill axis C.

Abstract: A liquid crystal display unit includes a liquid crystal panel having a plurality of liquid crystal pixels and a plurality of switching elements provided in correspondence to the respective pixels. A back light disposed at the back of the liquid crystal panel and guides red, green, and blue light to the surface thereof; an image memory for storing pixel data PD to be displayed on the respective pixels; an inverted data generating circuit for generating inverted pixel data #PD of the respective pixel data PD; and a control signal generating circuit and a data driver wherein first scanning for writing the pixel data PD with respect to individual pixels of the liquid crystal panel during each period in which red, green, and blue light are emitted in time-sharing manner, and second scanning for writing the inverted pixel data #PD with respect thereto are carried out in this order.

Abstract: The present invention provides a machine tool capable of reducing residual vibration occurring at the location time, thereby achieving responsiveness to a recent demand for higher acceleration/deceleration speed. The machine tool is configured such that a column 3 is fixed on a bed 2, a spindle head 6 for supporting a spindle 7 is disposed on a front face 3b? of the column 3 to be movable in a Z-axis direction, and a pair of right and left Z-axis ball screws (spindle drive shafts) 22 for driving the vicinity of the gravity center of the spindle head 6 is disposed on the front face 3b? of the column 3 to be symmetrical to each other with respect to a plane that includes an axis C of the spindle head 6 and is parallel to a Y axis, thereby driving the vicinity of the gravity center of the spindle head 6.

Abstract: The present invention provides a machine tool capable of enhancing chip discharge efficiency and improving work efficiency with improved approachability to a spindle. A machine tool according to the present invention is structured such that a recession 2c with a back face side and an upper face side thereof opened is formed at a center portion of a bed 2, Y-axis guide rails 18 and Y-axis ball screws (drive shafts) 16 for guiding and driving the saddle 4 are disposed on right and left saddle supports (edges) 2b of the recession 2c and are covered with right and left Y-axis cutting covers 56, the right and left Y-axis cutting covers 56 are formed in an inclined shape with the recession 2c side thereof becoming lower, and a chip receptor 48 for discharging chips dropped into the recession 2c to a back face side of the bed 2 is disposed in the recession 2c.