Patents Assigned to Mori Seiki Co., LTD
  • Patent number: 9897991
    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.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: February 20, 2018
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Hiroshi Yahaba, Takaaki Soga
  • Patent number: 9869994
    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.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: January 16, 2018
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventor: Tetsuo Ogawa
  • Patent number: 9863763
    Abstract: In order to adjust the volume of the combustion chamber with high accuracy, a cylinder head 200 includes a recess 204 constituting part of the combustion chamber of the engine and a mating surface for a cylinder block. The recess 204 includes a plurality of openings to which a plurality of specific members are attached respectively. The mating surface 202 is formed to have a cutting stock with respect to three-dimensional shape data of the cylinder head 200 designed to have a target combustion chamber volume. The adjusting method further comprises measuring the surface shape of the recess and the shape of the mating surface around the recess by successively changing the irradiation position of a laser beam using a line laser displacement meter. The adjusting method further comprises removing data of regions equivalent to the plurality of openings from measurement data by comparing the measurement data obtained by the line laser displacement meter with the three-dimensional shape data.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: January 9, 2018
    Assignee: DMG Mori Seiki Co., Ltd.
    Inventors: Shizuo Nishikawa, Hiroki Nakao
  • Patent number: 9863765
    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.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: January 9, 2018
    Assignee: DMG Mori Seiki Co., Ltd.
    Inventors: Ken Onoe, Akira Kimura
  • Patent number: 9846428
    Abstract: A controller has a varying speed signal generation unit generating a varying speed command signal varying at predetermined amplitude and period, a current control unit generating a current command signal based on the varying speed command signal, a feedback control unit generating a correction signal based on a deviation between the varying speed command signal and a present rotational speed of the spindle motor and adding the correction signal to the current command signal, and a learning control unit calculating a disturbance component caused by cutting resistance based on the deviation every predetermined rotation angle of the spindle motor and, in synchronism with a rotation angle of the spindle motor corresponding to the varying speed command signal input into the current control unit, generating a compensation signal based on the disturbance component corresponding to the rotation angle and adding the compensation signal to the varying speed command signal.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: December 19, 2017
    Assignees: The University of Tokyo, DMG MORI SEIKI CO., LTD.
    Inventors: Hiroshi Fujimoto, Teruaki Ishibashi, Shinji Ishii, Koji Yamamoto, Yuki Terada
  • Patent number: 9829349
    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. A forward direction tooth-to-tooth period error pattern being an error pattern of detected rotation angles at forward rotation and the actual rotation angles and a backward direction tooth-to-tooth period error pattern being an error pattern at backward rotation are found, and the command value for rotation angle is corrected based on the error pattern at the time of forward rotation, and the command value for rotation angle is corrected based on the error pattern at the time of backward rotation.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: November 28, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Shigetsugu Sakai, Yohei Shinkai, Yutaka Ido, Masanobu Nakazaki
  • Patent number: 9810521
    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.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: November 7, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Akinori Suzuki, Masayuki Niiya, Kenji Matsushita, Terukazu Nishida, Hideaki Tamiya, Kayoko Taniguchi
  • Publication number: 20170307409
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(1/3+1/5+1/7+ . . . 1/(2m+1)).
    Type: Application
    Filed: May 19, 2017
    Publication date: October 26, 2017
    Applicant: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO, Mitsugu YOSHIHIRO
  • Patent number: 9791848
    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.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 17, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Shojiro Tanaka, Sumihiro Kiyota, Kyoichi Tateno
  • Patent number: 9791847
    Abstract: An apparatus includes vibration data obtainer 30 obtaining data on vibration caused by a tool in cutting, a vibration frequency calculator 22 calculating a vibration frequency of the tool by analyzing the obtained vibration data, a regenerative chatter detector 23 detecting whether regenerative chatter occurs by comparing the calculated vibration frequency of the tool with a spindle rotation number, and a spindle rotation controller 24 gradually decreasing or increasing the spindle rotation number when occurrence of regenerative chatter vibration is detected, and a stable rotation number calculator 25 monitoring variation of the vibration frequency of the tool and determining a spindle rotation number when the variation of the vibration frequency exceeds a predetermined reference value to be a stable rotation number.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 17, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventor: Katsuhiko Ono
  • Publication number: 20170284830
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of ½n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(?+?+ 1/7+ . . . 1/(2m+1)).
    Type: Application
    Filed: May 19, 2017
    Publication date: October 5, 2017
    Applicant: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO, Mitsugu YOSHIHIRO
  • Patent number: 9776251
    Abstract: A cutting insert is configured to include: a first portion having a rake face, a flank face, a cutting edge, and a face facing an insert attachment portion at an end of a tool main body; and a second portion having a side surface including at least one flat plane that is parallel to a center line of a tool or inclined at a prescribed angle to the center line. The second portion extends continuously to a region surrounded by the face of the first portion. The second portion is fitted into the tool main body to position the cutting insert and to prevent the cutting insert from rotating.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: October 3, 2017
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd., DMG MORI SEIKI CO., LTD.
    Inventors: Junya Okida, Kazuya Ishikawa, Shigenori Emoto, Daisuke Murakami, Shinya Ikenaga, Kazuo Noguchi, Suehiro Ikeda, Takayuki Hirokawa, Yoshio Ohara, Morihiro Hideta, Yohei Oda
  • Patent number: 9760261
    Abstract: A display apparatus capable of displaying images of movable structures includes a data storage unit for storing image data and a display control unit which receives signals relating to positions of movable structures from a numerical controller and reads out image data relating to the received movable structures from the storage unit, and generates a display image in which images of the movable structures are arranged to have a positional relationship received and displays the display image on the display. When a selection signal for selecting a movable structure to be operated is input to the numerical controller from an input device, the display control unit receives the selection signal and generates a display image in which the image of the movable structure corresponding to the received selection signal is highlighted and displays the display image on the display.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: September 12, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventor: Hiroshi Yahaba
  • Patent number: 9757829
    Abstract: A reinstalling method which, when reinstalling an object to be supported, precisely restores the object to an initial installing state in a short period of time without requiring special skills. In a state before supporting of an object to be supported by support tools is released and in each of states in which the supporting is sequentially released, load acting on at least one support tool selected from among the support tools being in a supporting state is obtained. When reinstalling, the object is sequentially supported at the same positions as those before the release by the support tools in the reverse order to that of the release, and, a vertical-direction supporting position of each support tool is adjusted so that a load cell of the selected support tool detects the same value as the load obtained in the supporting state before the support tool was released.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: September 12, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Hidenori Saraie, Shigenori Jo, Kinji Hashimoto, Toshiya Sato, Kazuo Yamazaki
  • Patent number: 9733317
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(1/3+1/5+1/7+ . . . 1/(2m+1)).
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 15, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto, Mitsugu Yoshihiro
  • Patent number: 9719805
    Abstract: A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 1, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto
  • Patent number: 9694427
    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.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: July 4, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Takayuki Akai, Yoshihiro Matsumoto, Masashi Yokoyama, Toshiaki Tanaka
  • Patent number: 9689662
    Abstract: A scale has marks whose pitch interval changes along a measurement direction in a manner that can be approximated to a quadratic or higher-order polynomial. A comparing unit calculates a difference between first relative position information and second relative position information per unit displacement in a position where a first displacement detecting unit is arranged. Then, an absolute position computing unit computes an absolute position in the measurement direction with respect to the scale based on absolute position information and the relative position information of at least one of the first relative position information and the second relative position information, and outputs the absolute position.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: June 27, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventor: Hideaki Tamiya
  • Patent number: D790610
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: June 27, 2017
    Assignees: DMG MORI SEIKI CO., LTD., DMG MORI SEIKI AKTIENGESELLSCHAFT
    Inventor: Dominic Schindler
  • Patent number: D798317
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 26, 2017
    Assignees: DMG MORI SEIKI CO., LTD., DMG MORI SEIKI AKTIENGESELLSCHAFT
    Inventor: Dominic Schindler