Abstract: A numerical control device reads a machining program and causes a machine tool to operate based on the machining program. The numerical control device includes: an acceleration-deceleration determining unit; and a position-command generating unit. The numerical control device is configured to set the acceleration and the deceleration as acceleration-deceleration data when the acceleration and the deceleration satisfy tolerances decided based on actual mechanical dynamic characteristics, and set the tolerances as acceleration-deceleration data when the acceleration and deceleration do not satisfy the tolerances. The position-command generating unit is configured to generate a position command based on the moving command, the acceleration-deceleration data, and the speed at the end of the command route and the superimposition amount subjected to processing by the acceleration-deceleration determining unit.

Abstract: An operating device includes a touch panel 21 having a display 22 on which a screen is displayed and an input element 23 having a plurality of electrodes and outputting a signal corresponding to capacitance generated between a ground potential and each of the electrodes, an input signal processor 14 receiving the signals output from the electrodes of the input element 23, recognizing a touched position touched by an operator, and generating an operation signal corresponding to the recognized touched position and transmitting the generated operation signal to a controller 3, and determiner 16 determining whether the input element 23 is electrically stable or not. When the input element 23 is determined to be electrically unstable, the determiner 16 displays a warning screen or warning window on the display 22.

Abstract: An interference checking device 1 checks, during machining using an NC machine tool 20, interference between structures of the NC machine tool 20, a tool and a workpiece, and includes an interference check processing unit 2 virtually moving models and checking the occurrence of interference based on a position control signal from a numerical controller 30, and an operation effect degree evaluating unit 6 evaluating the degree of an effect of an operation on a possibility of the occurrence of interference. When a predetermined operation is performed during machining of a workpiece following a first workpiece, the interference check processing unit 2 moves the models at intervals determined based on the degree of the effect evaluated by the operation effect degree evaluating unit 6.

Abstract: Using a machine tool, a workpiece is machined while periodically varying the rotational speed of a spindle thereof. Correlation data on correlation between a speed variation rate RVA of the spindle rotational speed, a speed variation period ratio RVF thereof, and vibration of a tool when machining the workpiece while periodically varying the spindle rotational speed is previously obtained. Based on the correlation data, the speed variation rate RVA and the speed variation period ratio RVF are set so that the vibration of the tool and machining accuracy are within their respective allowable ranges, and based on the set speed variation rate RVA and speed variation period ratio RVF, a variation amplitude and a variation period of the spindle rotational speed are determined. The spindle is rotated at the rotational speed varying at the determined amplitude and period with respect to a target rotational speed, thereby machining the workpiece.

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 displacement detecting device includes a light source that performs irradiation with light, a light-beam splitting section, a reflection/transmission section, a phase plate, a transmission-type diffraction grating, a light-beam combining section, a light-receiving section, and a relative position information output unit. The reflection/transmission section transmits or reflects a first light beam, and causes the beam to enter a member to be measured. Furthermore, the reflection/transmission section guides the first light beam to a specific position of the member to be measured in the case where the member to be measured is in a reference position. Moreover, an optical path of the first light beam reflected by the member to be measured again overlaps with an optical path of the first light beam reflected at a specific position of the member to be measured.

Abstract: A connection portion between a holder side part of a chip suction path and a main body side part of the chip suction path 12 is formed to have a non-contact structure, resulting in that not only a chip generated at a machining point but also a chip remained so as to be suspended in a machining atmosphere can be sucked and discharged.

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: An attachment for dust collection for cutting machining includes a rotation mechanism and a dust collection enclosure for enclosing at least part of a tool. The dust collection enclosure is rotatably configured by being fixed to the rotation mechanism. A gap for checking a machining state is provided in the dust collection enclosure.

Abstract: A system, method and computer-readable medium for fine-tuning speed selection for reducing machine chatter. The system includes circuitry configured to determine a predetermined speed of the machine. The circuitry identifies a stability lobe based on the predetermined speed of the machine and selects a first set of fine-tuning speeds from a range of machine speeds corresponding to the determined stability lobe. Further, the circuitry causes the machine to operate at one or more of the first set of fine-tuning speeds.

Abstract: A method, non-transitory computer-readable medium, and controller for manufacturing a predetermined object. The method includes machining a plurality of separate components of a work piece based on a final geometry of the predetermined object. The plurality of separate components is selected based on the final geometry of the predetermined object. A first material is added to the work piece such that a first single continuous surface is formed over, or together with, the machined surfaces of the plurality of separate components which is selected based on the final geometry of the predetermined object.

Abstract: An operating device includes a touch panel, a display screen data storage unit storing display screen data to be displayed on a display unit of the touch panel, an operation information storage unit storing operation information corresponding to positions on the display screens, an attribute information storage unit storing attribute information set for operation screens of each operation mode, a display control unit displaying the screens on the display unit, an input signal processing unit processing a signal from an input unit of the touch panel and transmitting an operation signal to an operation controller, and further transmitting a display screen changing signal to the display control unit, and an automatic mode switching unit monitoring display of the operation screens by the display control unit, and in the case where the attribute information is set for the operation screens displayed, outputting a mode switching signal to the operation controller.

Abstract: This invention reliably returns a measurement surface to a reference position while weakening the elastic force of a spring. A tool length measurement apparatus of this invention includes a supporter that supports the measurement surface that the tip of a tool contacts while translating in accordance with a biasing force received from the tool. The tool length measurement apparatus of this invention also includes a detector that detects the position of the measurement surface in a translation direction. The tool length measurement apparatus of this invention also includes a biasing unit that biases the measurement surface by a gas in a direction against the biasing force received from the tool.

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 controller has a control unit generating a control signal to control a drive motor and a friction compensation unit adding a friction compensation signal to the control signal for compensating for a positioning error caused by friction in a guide unit. When reversing the direction of movement of the movable body, the friction compensation unit generates a friction compensation signal in accordance with a function f(?) representing a friction compensation value uf by a relationship with a variable ? and asymptotically approaching the maximum value and the minimum value of the friction compensation value uf and having an inflection point therebetween, and adds the generated friction compensation signal to the control signal generated by the control unit during movement of the movable body a predetermined movement distance from before to after the reversing.

Abstract: A displacement detection apparatus capable of stably and accurately detecting the amount of displacement. The length of a polarization maintaining fiber for transmitting the light from a light source to a displacement detector is set not to be equal to a length obtained by dividing, by the wavelength of the light source, a product of an even integral multiple of a length, which is obtained by multiplying twice the length of a resonator by the refractive index of the resonator, and a beat length obtained by a difference between the propagation constants of two polarization modes. Alternatively, the length of the polarization maintaining fiber is set to be larger than a length, which is obtained by dividing, by the wavelength of the light source, a product of a coherence length and a beat length obtained from a difference between the propagation constants of two polarization modes.

Abstract: A machine tool has a cover body with a window, the window including two spaced window plates defining an airtight space therebetween. The space is brought to a pressure other than atmospheric. An indicator is coupled to the cover body and has an indicator portion that is displaced in response to pressure in the space. The indicating portion is visually observable from outside the machine tool, so that the airtightness of the window may be determined by visually observing the position of the indicating portion.

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: To provide a chip disposal device of a machine tool which surely separates and collects a cutting fluid adhering to a chip lump, thereby capable of reducing an amount of the cutting fluid discharged to the outside of the machine. The chip disposal device includes a liquid separating part 65 which separates and collects a cutting fluid adhering to chips, the liquid separating part 65 has a mounting part 66 which is provided continuously from an inclined discharge surface 20a and is inclined so as to get lower as it goes more apart outward from the inclined discharge surface 20a, and to which a first chip lump a1 conveyed by a first scraping plate 36a is transferred. Then, the first chip lump a1 on the mounting part 66 stays on the mounting part 66 until dropping by being pushed by a second chip lump a2 conveyed by a second scraping plate 36b following the first scraping plate 36a.