Abstract: In a lathe equipped with a spindle for rotatably driving a work and a tool rest having a turret (rotary member) rotatably supporting a plurality of tools in an indexable manner about a horizontal axis, the tool rest is detachably installed on a tool rest installation portion formed so as to be positioned on an operator side so that the tools of the turret face the work side gripped by the spindle in an attachable and detachable manner.

Abstract: Methods and apparatus for detecting machine tool window airtightness includes an airtight state detector, having a sensor detecting the pressure in a space of the window, and a judging section for determining appropriateness of the airtight state of the space based on a pressure value from the pressure sensor and outputting a judgment result. Pressure in the window space, which initially may be pressurized or pressure-reduced, is detected intermittently by the pressure sensor, and the judging section determines appropriateness of the airtight state of the window on the basis of a variation state of the detected pressure.

Abstract: A machine tool includes a spindle equipped with a workpiece gripping portion arranged so as to face an operator side, the spindle being configured to rotatably drive a workpiece gripped by the workpiece gripping portion, and a tool mount equipped with a rotary member supporting a plurality of tools in a rotatably indexable manner about an axis parallel to an axis of the spindle. The tool mount is arranged at a tool mount installation portion formed to be positioned on the operator side in a manner such that the rotary member faces a workpiece gripping portion side.

Abstract: A chip discharging device of a machine tool is equipped with a chip discharging member for discharging chips generated by machine processing to a workpiece to an outside of the machine tool, and a chip shooter for introducing the chips to the chip discharging member. The chip shooter connects an introducing opening for introducing the generated chips and a discharging opening for discharging the chips toward the chip discharging member by a guide wall surface. The guide wall surface includes a vertical wall surface and a plurality of inclined wall surfaces inclined with respect to the vertical wall surface. At least a boundary parts between the inclined wall surfaces and a boundary part between the inclined wall surface and the vertical wall surface are formed by a flat surface or a curved surface.

Abstract: A cooling medium accumulation part is integrally formed with a spindle housing and an attaching section between the spindle housing and the attaching section so that at least a width of the cooling medium accumulation part in a direction perpendicular to the spindle is wider than a width of the motor accommodation section in a virtual projection plane obtained by projecting the cooling medium accumulation part in a direction from the spindle housing to the attaching section. A straight oil supply through-holes communicating the cooling medium accumulation part and the cooling passages are formed in a side wall part of the spindle housing.

Abstract: A simulation apparatus 1 includes a touch panel 20, a display controller 11, a display screen data storage unit 12, an input control unit 13, an operation information storage unit 14, a model data storage 16, a simulation executor 15 and an NC program generator 17. The simulation executor 15 displays an image of a movable structure 12 to be operated on the touch panel 20, moves the image in accordance with a manual operation and checks occurrence of interference, and, in the case where interference occurs, stops the movement of the image and displays the occurrence of interference on the touch panel 20. Further, in the case where it is confirmed that no interference occurs, the NC program generator 17 generates an NC program based on manual operation information.

Abstract: A machine tool that can output an abnormal noise is provided. A machine tool includes: an input unit configured to receive an input of a setting for defining an operation mode of the machine tool; a storage unit configured to store sound generated during a normal operation of the machine tool and acquired in advance; a sound collection unit configured to collect sound in the machining area; a sound selection unit configured to extract a part of sound collected in the machining area in accordance with the setting input for outputting sound to the outside of the machine tool; and a sound output unit configured to output sound extracted by the sound selection unit to the outside of the machining area.

Abstract: An NC program generating and editing apparatus 2 includes an interactive input module 9, a first memory 10, an NC program generator 11, a second memory 12, a program editor 13, a change checker 14 and a data updater 15. The change checker 14 determines whether a changed portion of an edited NC program consists of only a change related to a preset NC code, and when the changed portion consists of only a change related to the NC code, corresponding basic data is updated by the data updater 15.

Abstract: A moving body guide mechanism of a machine tool includes at least two bar-shaped guide members, and sliders engaged with the two guide members, respectively, movably with respect to the guide members so that a moving body is guided along an axis parallel to a moving axis extending in a longitudinal direction of the guide members. Attaching surfaces of the two guide members or the sliders to the moving body are provided symmetrically across a plane including the axis parallel to the moving axis in such a manner that an angle formed by the attaching surfaces becomes smaller than 180°.

Abstract: A positioning control apparatus has a moving body, a feed device having a guide mechanism for guiding the moving body in the direction of its feed axis and a drive mechanism for moving the moving body, a structural body supporting the feed device and a controller for controlling a moving position of the moving body with respect to a reference position on a machine tool by controlling the operation of the drive mechanism, and further has a calculating section calculating displacement of the feed device in the feed-axis direction with respect to the reference position caused by displacement of the structural body and a compensating section receiving the displacement data measured by the calculating section and adding modification data for eliminating the displacement to a control signal in the controller.

Abstract: A machine tool cooling system and cooling method which allow cost reduction by reducing the number of control valves, and in which opening/closing control is simple are disclosed. The machine tool cooling system and cooling method include a hot oil tank storing hot oil, a cold oil tank storing cold oil, a first to third hot oil passages and a first to third cold oil passages, which supply the hot oil and the cold oil to a first to third heat generating portions, a hot oil return passage returning the hot oil to the hot oil tank, a first to third supply control valves interposed in the first to third cold oil passages, and a valve controller controlling opening/closing of the first to third supply control valves so that the cold oil is supplied to the first to third heat generating portions intermittently at different timings.

Abstract: A displacement detecting device includes: a diffraction grating having a relief shape; an irradiation optical system adapted to irradiate two beams onto the diffraction grating as p-polarized light; a reflection optical system adapted to reflect two first diffracted lights generated when the two beams is diffracted by the diffraction grating, and cause the first diffracted lights to be incident again on the diffraction grating as p-polarized light so as to generate two second diffracted lights; an interference optical system adapted to cause the two second diffracted lights to interfere with each other to obtain interference light; a light receiving section adapted to receive the interference light; and a position information detecting section adapted to detect position information of the diffraction grating based on an interference signal. The period of the relief of the diffraction grating is no more than 1.5 times the wavelength of coherent light.

Abstract: An NC program generating apparatus includes a standby state analyzing unit 12 analyzing an NC program to determine whether a block in which an operation unit is brought into a standby state is present, and when such a block is present, determining whether a power source 39, 45, 46 corresponding to the operation unit can be stopped at the time of execution of the block to specify a stoppable block, and a power operation code inserting unit 13 inserting an operation code for stopping the corresponding power source 39, 45, 46 at the time of execution of the stoppable block into the NC program and inserting an operation code for restarting the power source 39, 45, 46 after the execution of the block into the NC program.

Abstract: A displacement detecting device includes a light source, a beam splitting section, a diffraction grating, a reflecting section, a beam combining section, a light receiving section, and a relative position information output section. The diffraction grating is adapted to diffract a first beam reflected by a surface-to-be-measured of a member-to-be-measured, and cause the diffracted first beam to be incident again on the surface-to-be-measured. The reflecting section is adapted to reflect a second beam split by the beam splitting section to the beam splitting section. The light receiving section is adapted to receive interfering light of the first beam and the second beam. The relative position information output section is adapted to output displacement information of the surface-to-be-measured in the height direction based on intensity of the received interfering light.

Abstract: The present invention provides a machine tool making it possible that an operator needs to remove a key member from a predetermined position after an unlock condition of a door is established when a door lock mechanism brings the door into an unlocked state, meanwhile the operator can recognize the necessity of reattaching the key member to the predetermined position when the door lock mechanism brings the door into a locked state. In the machine tool, an interlock mechanism 5a allows a door lock mechanism 8 to bring a door 3 into the unlocked state in a state that the unlock condition of the door 3 is established and when the key member 9 is removed from the predetermined position and, after the door 3 is unlocked, allows the door lock mechanism 8 to bring the door 3 into the locked state only when the key member 9 is attached to the predetermined position in a state that the door closed state detection mechanism 7 detects that the door is located at the predetermined closed position.

Abstract: A machine tool includes a movable structure 3, a numerical control unit 22, an external input unit 39 having a dedicated operation key for inputting an operation signal associated with at least a movement end point to which the movable structure 3 is moved, a display unit 39 displaying an image, a display control unit 25 controlling the display on the display unit 39, an input control unit 24 processing a signal input from the external input unit 39, and a movement path setting unit 32 receiving the operation signal input from the external input unit 39 and setting a movement path for moving the movable structure 3 corresponding to the operation signal to the movement end point according to a predetermined setting condition. The display control unit 25 displays an image relating to the movement path set by the movement path setting unit 32 on the display unit 39.

Abstract: An optical fiber unit (1) includes a tube (2) having stretchability in the axial direction, an optical fiber (4) movably housed in the tube (2), and a linear body (3) formed of a material having less stretchability than the tube (2). Both ends of the linear body (3) are fixed to both end portions of the tube (2) in a state where the tube (2) has been previously shrunk in the axial direction.

Abstract: Provided is a temperature control apparatus of a working machine that is inexpensive, energy-saving and capable of eliminating the temperature difference between a temperature in a room in which the working machine is installed and a temperature of a working area.

Abstract: A display apparatus has a display 40, a model data storage unit 37 storing therein three-dimensional model data of a movable structure and a structure having a possibility of interfere with the movable structure, a model generation unit 33 generating a three-dimensional model in which three-dimensional models of the structures are arranged in a three-dimensional space, an interference-caution-portion specifying unit 34 specifying a portion of the movable structure having a possibility of contact with an interfering structure as an interference caution portion when an interfering structure exists and specifying a leading portion of the movable structure in a moving direction as an interference caution portion when an interfering structure does not exist, and an image display unit 35 generating an image with the interference caution portion highlighted based on the three-dimensional model generated by the model generation unit 33 and displaying the image on the display 40.

Abstract: An optimum cutting feed rate of a machine tool is calculated at the outset and a tool path as well as the optimum cutting feed rate calculated is directly output to a driving unit of the machine tool. A relative movement between the work and a tool is made to occur along the tool path at the optimum cutting feed rate for each part of the tool path. To this end, a control system includes a CL data generating unit 32, a CL data memory 33, a driving capability data memory 34, a cutting feed rate data generation unit 35, a cutting feed rate data memory 36, and a controller 42.