Patents Assigned to Makino Milling Machine Co., Ltd.
  • Rotary workhead device
    Patent number: 9919393
    Abstract: The rotary workhead device, which is loaded on the table of a machine tool and onto which a workpiece to be machined is rotatably mounted, is equipped with: a base plate that is attached to the table of the machine tool; two rotary workheads that are provided on the base plate and disposed so that the axes of rotation coincide and the workpiece-fixing parts face each other; a guide means that is provided so as to be capable of moving at least one of the rotary workheads back and forth in the direction of the rotation axes; and an impelling means for impelling the one rotary workhead in a direction that separates or brings together the two rotary workheads. The rotary workhead device applies a tensile force or a compressive force on a workpiece, the respective ends of which are fixed between the two rotary workheads.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 20, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Masahiro Shirone
  • FINE HOLE ELECTRICAL DISCHARGE MACHINE
    Publication number: 20180050402
    Abstract: This fine hole electrical discharge machine applies voltage between a fine hole machining electrode and a workpiece to cause discharge, and machines a fine hole in the workpiece by using energy of the discharge. The fine hole electrical discharge machine comprises: a bendable guide tube having a hollow portion through which the electrode is inserted; and a tube holder that supports the leading end of the guide tube and allows the leading end of the guide tube to be inclined at a desired angle. Thus, even when the workpiece has a complicated shape, like a blisk, having a large number of turbine blades arranged in the circumferential direction, a fine hole can be machined by accurately positioning the electrode so as to orient the electrode toward a target machining point on a surface of the workpiece without involving interference with the workpiece.
    Type: Application
    Filed: March 31, 2015
    Publication date: February 22, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Tomohiro NAGASE
  • TOOL PATH GENERATING METHOD AND TOOL PATH GENERATING APPARATUS
    Publication number: 20180046165
    Abstract: This tool path generating method, which generates a tool path for machining a corner section at which a recess section machined in a workpiece intersects with the outer circumferential surface of the workpiece, includes: a step for calculating a virtual traveling direction, which is a movement direction of a point on the rotational axis line of a rotating tool when the recess section is machined; a step for calculating the position of the corner section from the virtual traveling direction and shape data of the workpiece; and a step for generating a tool path for machining along the calculated position of the corner section.
    Type: Application
    Filed: March 13, 2015
    Publication date: February 15, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori MASUMIYA, Kyohei SUZUKI, Hiroki KATO
  • METHOD FOR EVALUATING TOOL INSTALLATION, AND MACHINE TOOL
    Publication number: 20180036854
    Abstract: Provided is a method for evaluating tool installation when fastening a tool to a main shaft of a machine tool, wherein the method includes a storage step for storing a reference location of a draw bar at the time when the tool is contacting a mounting seat of the main shaft, in a state in which foreign matter has been removed from the surface of the mounting seat and from the contacting surface of the tool. The method for evaluating tool installation includes a measuring step for measuring a measurement location of the draw bar when the tool is installed on the main shaft, and a determination step for determining the installation state of the tool to be abnormal if a measurement-location error with respect to the reference location exceeds a predetermined determination range.
    Type: Application
    Filed: March 2, 2015
    Publication date: February 8, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Yuji TAKANO
  • Control device for coordinating translation and revolution movement in a machine tool
    Patent number: 9886021
    Abstract: A control device for a machine tool for machining a workpiece while orbital movement is performed for causing an auto-rotating rotary tool to move in a circular manner, the control device comprising: a reading and interpreting unit for reading a machining program containing input information; and a computing unit for combining a first tool pathway along which a rotary tool travels and which has been set on the basis of input information about the travel of the rotary tool, and a second tool pathway along which the rotary tool orbits and which has been set on the basis of input information about the orbital movement, and for setting a third tool pathway along which the rotary tool travels in a machining shape while moving in an orbital manner.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: February 6, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Tomohiro Takabe
  • LASER BEAM MACHINE AND ALIGNMENT ADJUSTING METHOD
    Publication number: 20180029159
    Abstract: This laser processing machine, which processes a work piece mounted on a table by irradiating the work piece with a laser light, is provided with: an optical head having a nozzle that sprays a liquid to form a columnar liquid flow and introducing a laser light into the nozzle and shining said light; and an alignment adjustment device having a reflector that is disposed so as to face the optical head and reflects the laser light, and a light-shielding portion around the portion of the reflector that reflects the laser light, and adjusting the position or orientation of introduction of the laser light into the columnar liquid flow.
    Type: Application
    Filed: January 30, 2015
    Publication date: February 1, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Hiroshi TOYAMA, Muneaki BEPPU
  • MOTOR CONTROLLING METHOD, CONTROL DEVICE AND MACHINE TOOL
    Publication number: 20180032052
    Abstract: A method for controlling the motor of a tool magazine that rotates around a horizontal rotation axis is configured so that: at least two indexing positions for the tool magazine are determined; the load torque acting on the tool magazine when stopped at said indexing positions is measured; an unbalance torque, which is the load torque when stopped at the indexing position at which the load torque when stopped is maximal, is calculated from multiple load torques when stopped; and the servo motor for the tool magazine is controlled on the basis of the unbalance torque.
    Type: Application
    Filed: February 27, 2015
    Publication date: February 1, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Kazunari ISHII, Masashi NAGAYA
  • Machine tool
    Patent number: 9878408
    Abstract: A machine tool which causes a tool mounted on a main spindle and workpiece attached to a table to move relative to each other so as to machine the workpiece, said machine tool being equipped with: a column that has guides for guiding movements in the vertical direction, that is, the direction of gravity; and a moving body that supports a spindle head at the front and moves in the vertical direction along the guides. The guides comprise a pair of right and left first guides and at least one second guide that is provided on the inner side of and posterior to the pair of first guides.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: January 30, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Kenichiro Suzuki
  • Interference determination method and interference determination device for machine tool
    Patent number: 9873175
    Abstract: An interference determination method for machine tools which determines whether or not there will be interference between elements that move relative to each other, the method including: a setting procedure for setting a machine tool model obtained by combining the shape model of each of the elements including a work model corresponding to the work; a measurement procedure for measuring the position of the work attached to the work attachment part; a correction procedure for acquiring, at a predetermined timing, the position of the work measured in the measurement procedure, and correcting the machine tool model set in the setting procedure; and a determination procedure for determining whether or not there will be interference between the elements on the basis of the machine tool model corrected in the correction procedure.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: January 23, 2018
    Assignee: MAKINO MILLING MACHINE CO,. LTD.
    Inventor: Tadashi Kasahara
  • TOOL SHAPE MEASUREMENT APPARATUS AND MACHINE TOOL
    Publication number: 20180015585
    Abstract: A tool shape measurement apparatus for imaging a tool is provided with: a camera for imaging the tool disposed at a previously determined imaging position; a shutter disposed on the opposite side of the tool from the camera; an illuminating device for shining light toward the shutter; and a control device for calculating the shape of the tool from an image of the tool. The illuminating device is disposed so that an image in which the tool is darker than the background of the tool is captured due to light reflected at the reflecting surface of the shutter.
    Type: Application
    Filed: February 13, 2015
    Publication date: January 18, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Tadashi KASAHARA, Kenichi OHATA
  • SHAPE EVALUATION METHOD AND SHAPE EVALUATION APPARATUS
    Publication number: 20170370714
    Abstract: A shape evaluation method according to the present invention comprises: a shape error calculation step that calculates a shape error, which is an error between a designed shape and a shape to be evaluated; and a visible error detection step that detects visible shape errors on the basis of the shape error and predetermined visual characteristic data.
    Type: Application
    Filed: February 2, 2016
    Publication date: December 28, 2017
    Applicants: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, MAKINO MILLING MACHINE CO., LTD.
    Inventors: Ryuta SATO, Yuki SATO, Mitsunari ODA, Nobu NAKAYAMA
  • LASER BEAM MACHINE AND ALIGNMENT ADJUSTING METHOD
    Publication number: 20170361399
    Abstract: This laser processing machine, which moves a work piece, which is mounted on a table, and an optical head, which shines a laser light, relative to each other, and processes the work piece by irradiating the work piece with the laser light, is provided with: a calibration camera that is fixed to the optical head; a probe that is fixed to the optical head; and a calibration unit that has measurement reference points (Pc1, Pc2, Pc3, Pp1, Pp2, Pp3) for measuring the position of the calibration camera and the probe, and a processing portion that forms a processing mark (L1, L2) due to the laser light.
    Type: Application
    Filed: January 30, 2015
    Publication date: December 21, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Hiroshi TOYAMA, Muneaki BEPPU
  • Generation method and generation apparatus of tool path based on corrections using average distances
    Patent number: 9829879
    Abstract: A tool path is generated with procedures that include: one of the processing points (Pi) on a multiple rows of tool paths (PA) obtained by connecting multiple prescribed processing points sequentially with straight lines is set as a revision processing point (Pt), points on the multiple rows of tool paths are set as distance calculation points (Pu), and the distance (L) from the revision processing point (Pt) to each of the distance calculation points (Pu) is calculated; the distance calculation points (Pu?) for which the distance (L) is within a prescribed value (?L) are extracted; the mean values of the position data for the distance calculation points (Pu?) and the position data for the revision processing point (Pt) are calculated; and the position data is revised by means of the mean values, and a new tool path (PA?) is created.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: November 28, 2017
    Assignee: Makino Milling Machine, Co., Ltd.
    Inventors: Masashi Tanuma, Mitsunari Oda, Takashi Komori, Takahiro Yoshimura
  • CONTROL METHOD FOR MACHINING TOOL AND CONTROL DEVICE FOR MACHINING TOOL
    Publication number: 20170315535
    Abstract: Provided is a control method for a machining tool that processes a workpiece while causing a tool, which rotates by means of a main shaft motor, and the workpiece, which is secured to a table, to move relative to one another, wherein on the basis of the torque command value, the current command value, or the actual current value of the main shaft motor, calculated is the actual cutting force of the tool that is received from the workpiece at a location which is predetermined during the processing of the workpiece, and the actual cutting force that has been calculated is displayed on a display unit.
    Type: Application
    Filed: October 29, 2014
    Publication date: November 2, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Kazunari ISHII, Takehito SHINADA
  • MACHINE TOOL CONTROL METHOD AND MACHINE TOOL CONTROL DEVICE
    Publication number: 20170308055
    Abstract: This method of controlling machine tool for machining a workpiece by moving a tool and the workpiece relatively to each other comprises: displaying an image of the machine tool on a display unit, pre-storing a motion of the machine tool corresponding to an operation by an operator with respect to the image of the machine tool; obtaining a content of the operation by the operator with respect to the image of the machine tool; generating an operation command for causing the machine tool to operate according to the operation content; and activating the machine tool on the basis of the operation command.
    Type: Application
    Filed: October 27, 2014
    Publication date: October 26, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yoshihiro HOSHINO, Kazunari ISHII, Rie KAWAI, Takahiro UNNO, Alexandra Florentina STANCU
  • CONTROL DEVICE FOR MACHINE TOOL, AND MACHINE TOOL
    Publication number: 20170308063
    Abstract: Provided is a control device for a machine tool that exchanges a tool and machines a work piece on the basis of a machining program, said control device being provided with a machining program analysis unit that analyzes a machining program and extracts, from the machining program, measurement-related information relating to a dimensional measurement of a tool, and with a measurement program generation unit that, on the basis of the measurement-related information and basic tool information input in advance, generates a measurement program for measuring the dimensions of the tool.
    Type: Application
    Filed: September 30, 2014
    Publication date: October 26, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie KAWAI, Hideki HEISHI, Kenichi ONO
  • CONTROL DEVICE FOR MACHINE TOOL
    Publication number: 20170300035
    Abstract: This control device for a machine tool is provided with: a display unit that displays information relating to a machine tool; a display control unit that controls the display of the display unit; and a storage unit. A display setting of the display unit that corresponds to an operation of an operator or the condition of the machine tool is stored in advance in the storage unit. The display control unit acquires an operation of the operator or the condition of the machine tool, reads the display setting corresponding to the operation of the operator or the condition of the machine tool from the storage unit, and changes the display of the display unit on the basis of the display setting.
    Type: Application
    Filed: September 30, 2014
    Publication date: October 19, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie KAWAI, Hideki HEISHI, Kenichi ONO
  • TOOL PATH GENERATION METHOD AND MACHINE TOOL
    Publication number: 20170300029
    Abstract: A tool path generation method for generating a second tool path by performing a smoothing process on a first tool path for processing a work with a machine tool includes a change rate calculation step of calculating a curvature change rate of the first tool path at a plurality of moving points (Pn) of the first tool path. The tool path generation method includes: a weight calculation step of calculating a moving average weight on the basis of the curvature change rate of the first tool path at each of the moving points (Pn); and a step of calculating coordinate values of the moving average of the moving points (Pn) using the weight at each of the moving points (Pn), and setting the coordinate values of the moving average of the moving points (Pn) as moving points of the second tool path.
    Type: Application
    Filed: October 29, 2014
    Publication date: October 19, 2017
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Mitsunari ODA, Megumi FURUTA, Akihiro SHINONE, Toshimune KAWAI
  • Workpiece-attachment-information reporting device
    Patent number: 9791845
    Abstract: A workpiece-attachment-information reporting device includes a range-setting unit for setting a movable range in a prescribed feed-shaft direction of a work machine, a position-orientation-setting unit for setting the attachment position or orientation of a workpiece, a route-setting unit for setting a tool route on the basis of the attachment position or orientation of a workpiece, a range calculation unit for calculating the operational range in the prescribed feed-shaft direction of a work machine when the tool has moved relative to the workpiece along the tool route, a target-position-orientation calculation unit for obtaining the target attachment position or orientation of the workpiece with the calculated operational range being within the movable range, and a reporting unit for reporting the target attachment position or orientation.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: October 17, 2017
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Hitoshi Sato, Yasunori Masumiya, Naohito Toida, Yuki Tanigawa
  • Electrical discharge machining method and electrode-guide position setting device
    Patent number: 9789555
    Abstract: In the present invention, when performing electrical discharge machining on a workpiece via an electrical discharge machine that has an electrode holder and an electrode guide, a workpiece model and an electrode-guide model are generated in advance, an interference-start position at which the electrode-guide model starts interfering with the workpiece model when the electrode-guide model is moved towards the workpiece model along an axis line (CLa) is calculated, and a position obtained by moving the electrode-guide model a prescribed distance away from the workpiece model, starting at the interference-start position, is set as an electrode-guide position. With the electrode guide positioned at the electrode-guide position, the electrode holder is moved downwards in order to move an electrode downwards toward the workpiece surface, and electrical discharge machining is performed on the workpiece.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 17, 2017
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Kyoichi Hamada, Takayuki Shiomizu