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: 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: A machine tool re-machines a workpiece after positioning drive motors, a hob and the workpiece by stopping the drive motors with the rotational positions of the drive motors, the hob and the workpiece corresponding to their respective zero positions. For this purpose, a drive control section recognizes, based on the rotational-speed ratio of the drive motor corresponding to the hob and the hob and/or the rotational-speed ratio of the drive motor corresponding to the workpiece to the workpiece, and detection signals from detection sensors detecting that the rotational positions of the drive motors are at their respective zero positions, detections signals when the rotational positions of the drive motors and the rotational positions of the hob and the workpiece correspond to their respective zero positions, and stops the drive motors with the rotational positions of the drive motors, the hob and the workpiece corresponding to their respective zero positions.

Abstract: A controller for a conventional synchronous motor is configured to produce desired output characteristics. The controller generates a drive current for based on a current command, has a motor correcting section and a gain adjusting section which output a compensated current command based on the current command according to a compensating transfer function for cancelling a first transfer function showing a first torque response characteristic of the synchronous motor and replacing it with a second transfer function showing a second torque response characteristic, and a current controller which generates a drive current corresponding to the compensated current command.

Abstract: A machine tool 1 has a support body 11, moving bodies 12, 13, 14, 15 with an engagement member 12a having an engagement hole 12b, a guide mechanism 20 for guiding the movement of the moving bodies 12, 13, 14, 15, a guide rail 31 provided along the moving direction of the moving bodies 12, 13, 14, 15 on the support body 11, a moving member 32 having a moving member body 33 engaged with the guide rail 31 and an engagement shaft 34 provided on the moving member body 33 and engaged with the engagement hole 12b and a collar member 35 provided on the tip portion of the engagement shaft 34, and a compressing spring 38 in which the engagement shaft 34 is inserted and which energizes the engagement member 12a. The engagement member 12a is provided on the opposite side to the moving body 14.

Abstract: A machine tool 1 comprises a bed 11, a column 12, a spindle head 15, a spindle 16, a saddle 17, a table 18, a feed mechanism for moving the spindle head 15, the saddle 17 and the table 18 in Z-axis, Y-axis and X-axis directions respectively, a position detector for detecting the positions of the spindle head 15, saddle 17 and table 18, a controller for feedback controlling the feed mechanism, a position detector 51 for detecting the position of the spindle head 15, a position detector 54 for detecting the position of the spindle head 15, a position detector 57 for detecting the position of the table 18, and a measurement frame 50 which is configured with a different member from the bed 11 and the column 12 and on which readers 53, 56, 59 of the position detectors 51, 54, 57 are disposed.

Abstract: Electronic equipment, including a GPS dongle and a PC, compares an acquired current location position of the electronic equipment with an acquired planned installation position of a machine tool to determine whether or not the current location position is within a predetermined range from the planned installation position. Further, the electronic equipment determines, if it is determined that the current location position is within the predetermined range from the planned installation position, whether or not a predetermined condition has been satisfied. The electronic equipment also performs, if it is determined that the predetermined condition has been satisfied, information input processing on the machine tool to remove activation restriction on the machine tool. In this manner, the electronic equipment can prevent illegal removal of activation restriction on the machine tool.

Abstract: There is provided a method of compensating a command value for rotation angle capable of precisely compensating a command value for rotation angle even when conditions at detection differ to thereby make error patterns different in the case where a tooth-to-tooth period error pattern in an arbitrary tooth period is used for all the tooth periods to correct a command value for rotation angle.

Abstract: A machine tool includes a rotatable spindle, a spindle drive, a tool magazine, a tool changer including a rotating shaft, a rotating shaft drive motor, an angular position detector, a tool change arm having gripping units at both ends, and a controller. After interchanging a first tool mounted on the spindle and a second tool held in a tool pot, when rotating the tool change arm to an intermediate position, rotation of the spindle is started as soon as the second tool mounted on the spindle and the gripping unit are out of contact with each other.

Abstract: A machining-related data processing system has a configuration in which a controller for machine tool comprising an NC device and an assisting device is connected to a data processing device via a telecommunication line.

Abstract: In a case where a tool holder 5 having a plurality of cutting tools T are attachably/detachably mounted on a base member 8, the tool holder 5 is formed in a ring shape and has depressions 5a and projections 5b on an inner periphery, and by aligning the depressions and projections 5a, 5b of the tool holder 5 with projections 9b and depressions 9a formed on an outer periphery of a rotating member 9 rotatably mounted on the base member 8, the tool holder 5 is mountable to or removal from the base member 8. The tool holder 5 is clamped to the base member 8 by being pressed against a seating surface 8e of the base member 8.

Abstract: A relocation detection unit includes: an acceleration sensor adapted to detect acceleration generated in the apparatus, an arithmetic section adapted to obtain a first calculation value by performing Nth-order integration on detected value of the acceleration sensor at a predetermined timing, wherein N is a predetermined positive integer, a correction section adapted to obtain a second calculated value by adding/subtracting a specific value to/from the first calculation value at the predetermined timing, and a detection section adapted to detect that the apparatus has been relocated if the second calculated value exceeds a preset reference value.