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 2; a saddle 4 disposed on the bed 2 to be movable in a Y-axis direction in a front view of the machine; a table 5 disposed on the saddle 4 to be movable in an X-axis direction; a column 3 having a shape of a gate that is bridged over a travel range of the table 5 and has right and left legs 3a fixed on the bed 2 and a beam connecting tops of the right and left legs 3a; and a spindle head 6 disposed on a front face of the beam 3b to be movable in a Z-axis direction.

Abstract: The present invention provides an arrangement structure of a machine tool which is capable of compactly arranging electrical wires and pipes for coolant and the like without impairing support stiffness for a column, and simplifying the arrangement structure, while adopting a column fixing structure.

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: 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: This device is provided with an elliptical mirror 2, a light source 5 that radiates coherent light towards an inspected edge 4 arranged near the location of its first focal point, a light blocking member 6 that blocks diffracted light of a low order that is radiated from light source 5 and reflected by inspected edge 4, and a photo detector arranged at the location of a second focal point 7 of the elliptical mirror 2. The light blocking member 6 is composed of a light absorbing member arranged on the mirrored surface of elliptical mirror 2 reached by the low order diffracted right.

Abstract: The invention provides a machining center for machining a workpiece by moving a grinding wheel and the workpiece relative to each other in the X, Y and Z directions. The machining center has a main spindle for removably mounting a grinding wheel, a spindle head for rotationally supporting the main spindle, a table for mounting the workpiece, a column for movably supporting the spindle head, and tool dressing means having a dresser spindle, provided over the spindle head to move in the vertical direction toward and away from the grinding wheel mounted to the main spindle, for mounting a dresser for truing or dressing the outer peripheral surface of the grinding wheel.

Abstract: The present relates to a machine tool for machining a workpiece by moving a tool and the workpiece relative to each other and to a pallet changer thereof. The machine tool is provided with a spindle for mounting the tool thereon, a table for a pallet (P) having the workpiece mounted thereon to be placed on the table, a pallet loading station for setting up the workpiece to the pallet (P) on the pallet loading station, and a pair of pallet change arms arranged to swivel about a vertical axis between the table and the pallet loading station, one pallet change arm (37) of which is arranged to be able to move independently of the other pallet change arm (37) in the vertical direction.

Abstract: This device is provided with an elliptical mirror 2, a light source 5 that radiates coherent light towards an inspected edge 4 arranged near the location of its first focal point, a light blocking member 6 that blocks diffracted light of a low order that is radiated from light source 5 and reflected by inspected edge 4, and a photo detector arranged at the location of a second focal point 7 of the elliptical mirror 2. The light blocking member 6 is composed of a light absorbing member arranged on the mirrored surface of elliptical mirror 2 reached by the low order diffracted right.

Abstract: The present invention relates to a machine tool system and a machining liquid supply device for machining a workpiece by a tool such as a grinding wheel or a milling cutter, and solves the problem of how to supply the machining liquid optimally to an area where the tool engages with the workpiece. In order to solve this problem, the present invention is so configured that during the machining of a workpiece with a tool (T) detachably mounted on a spindle (12) of a machine tool (MT), the machining liquid supply device (18) for supplying a machining liquid to a machining area of the tool (T) is provided with an opening end at the forward end of a machining liquid supply nozzle (20), and can give the movements in a radial direction and a circumferential direction through 360° with respect to the axis of the spindle (12) about the spindle head (12) having the spindle (12) through a rotational supporting body (16) by means of linear movement means (80) and rotating movement means (30), respectively.

Abstract: The present relates to a machine tool for machining a workpiece by moving a tool and the workpiece relative to each other and to a pallet changer thereof. The machine tool is provided with a spindle for mounting the tool thereon, a table for a pallet (P) having the workpiece mounted thereon to be placed on the table, a pallet loading station for setting up the workpiece to the pallet (P) on the pallet loading station, and a pair of pallet change arms arranged to swivel about a vertical axis between the table and the pallet loading station, one pallet change arm (37) of which is arranged to be able to move independently of the other pallet change arm (37) in the vertical direction.

Abstract: The invention provides a machining center for machining a workpiece by moving a grinding wheel and the workpiece relative to each other in the X, Y and Z directions. The machining center has a main spindle for removably mounting a grinding wheel, a spindle head for rotationally supporting the main spindle, a table for mounting the workpiece, a column for movably supporting the spindle head, and tool dressing means having a dresser spindle, provided over the spindle head to move in the vertical direction toward and away from the grinding wheel mounted to the main spindle, for mounting a dresser for truing or dressing the outer peripheral surface of the grinding wheel.

Abstract: When machining a workpiece (W) with a tool (T) detachably mounted on a spindle (12) included in a machine tool, a machining liquid supply system (42) for supplying a machining liquid into a machining region in which the tool (T) machines has a machining liquid spouting nozzle (44) having a machining liquid spouting opening (44a), the machining liquid spouting nozzle (44) is supported by a support rod (48) and a bracket (50) so as to be moved by moving means (54, 74) in radial directions and circumferential direction with respect to the axis of the spindle (12) in a region around a headstock (10) supporting the spindle (12). The diameter of the tool (T) held on the spindle (12) can be measured by an automatic tool measuring device (30) installed on the machine tool.

Abstract: To provide a compact size machine tool free from the inconveniences inherent to the prior art and excellent in the collection and removal of chips or the like, there is provided a channel 39 in a central portion of the bed 3 directly beneath the table 21 and extending parallel to the table moving direction; a chip conveyor 47 being provided inside the channel 39; on both sides with respect to the channel 39, a pair of opposite slopes 51, 51 for collection of chips as well as telescopic covers 53, 53 extensible or contractible in accordance with the displacement of the table 21 being provided so as to cover a pair of guide rails 13, 13 which extend parallel to each other along the Z direction.

Abstract: An improved device and method for use in machining a workpiece, which includes a tool body with a machining tool having two machining surface, wherein one of the machining surfaces is being selectively movable between a retracted position and an extended position. A supporting mechanism is sized and configured to substantially restrict movement of the machining tool relative to the tool body while the one machining surface is positioned in the retracted position. Preferably, the supporting mechanism includes an interior surface having a frustoconical-shaped tapered configuration, and the reciprocable machining surface has an engageable surface sized and configured to be frictionally engaged against the interior surface. In a preferred embodiment, the interior surface has an angle relative to the longitudinal axis of the tool body from about 20 to about 50 degrees, and more preferably about 40 degrees.

Abstract: A rolling-contact type bearing for rotatably supporting a spindle of a machine is cooled by a temperature controlled liquid lubricant supplied to an internal cavity or passageways provided in the spindle, and circulated toward the bearing so that the temperature controlled liquid lubricant comes into direct or indirect contact with the bearing in the order of the inner race, the rolling element, and the outer recess, to thereby apply a cooling and lubricating effect to those elements. The lubricant after cooling is collected to a lubricant-temperature controller to be subjected to a temperature control treatment for reuse as a coolant. An air seal is applied to a lubricant entrance of the spindle where the temperature controlled lubricant is supplied from a lubricant supply member into the spindle, to thereby prevent a leakage of the lubricant toward the exterior.

Abstract: A machining system for controlling the operation of a plurality of NC machine tools with a master controller, which is provided with an operation mode selector in a machine controller of each NC machine tool, and which is suitable for efficiently machining metal molds. The machining system allows the operator to quickly respond to a change in the condition of the production site and progress the machining operation of each NC machine tool only by manipulating the operation mode selectors without changing the machining sequence registered in advance in the master controller according to the production plan.