Patents Assigned to Makino Milling Machine Co., Ltd.
  • Tool path generation method and machine tool using rate of change of curvature based smoothing
    Patent number: 10248101
    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: Grant
    Filed: October 29, 2014
    Date of Patent: April 2, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Mitsunari Oda, Megumi Furuta, Akihiro Shinone, Toshimune Kawai
  • Control device for machine tool, and machine tool
    Patent number: 10248107
    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: Grant
    Filed: September 30, 2014
    Date of Patent: April 2, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie Kawai, Hideki Heishi, Kenichi Ono
  • Chain-type tool magazine
    Patent number: 10245692
    Abstract: A chain-type tool magazine for detachably holding a plurality of pots on a chain and circulating the pots, provided with: U-shaped link members having openings for detachably holding pots, the link members having first rollers protruding on the side of the openings and second rollers on the side opposite from the opening; link members which do not have a roller; a chain assembly in which the plurality of link members are alternately joined by pins in an endless manner; guides for guiding the first rollers and the second rollers so that the chain assembly bends in the forward and reverse directions and circulates in a meandering manner; and driving means for circularly driving the chain assembly.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 2, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Toru Nakashima, Naohiro Hayashi
  • Method for evaluating tool installation, and machine tool
    Patent number: 10239176
    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: Grant
    Filed: March 2, 2015
    Date of Patent: March 26, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Yuji Takano
  • Cutting method and tool path generating device
    Patent number: 10241494
    Abstract: A cutting method in which a workpiece is cut on the basis of a plurality of tool paths parallel to one another into a shape having a corner that protrudes outward. A machining step for machining the workpiece on the basis of one tool path and a moving step for moving to the starting point of the next machining step after the completion of the one machining step are repeated. In the machining step, a cutting step for cutting the workpiece in the one tool path and a removing step for removing a burr by moving a tool relatively to the workpiece in the same tool path as that of the cutting step in a region forming the corner are successively performed.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 26, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori Masumiya, Kyohei Suzuki, Kazutoshi Yabe, Takashi Kageyama
  • Control device for machine tool
    Patent number: 10222780
    Abstract: A control device for a machine tool, said control device being provided with a display unit that displays machining information and a display control unit that generates an image to display on said display unit. The display control unit is designed so as to divide up the display region of the display unit, generating a plurality of subregions. Via input from an operator, the sizes of said subregions can be changed. The display control unit changes the display format of the machining information in accordance with the machining information to be displayed and the sizes of the subregions.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 5, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie Kawai, Hideki Heishi, Kenichi Ono
  • OBJECT-SURFACE CORRECTING METHOD, AND PROCESSING METHOD AND PROCESSING SYSTEM FOR WORKPIECE
    Publication number: 20190064771
    Abstract: In the present invention: a plurality of meshes are defined on an object surface; the luminance of the object surface when the object surface is viewed from a viewpoint position is calculated for each of the plurality of meshes on the basis of data concerning a processed shape, a surface roughness curve, the viewpoint position, the direction, angle distribution, and intensity of incident light onto the object surface, and a reflectance and scattering characteristics for each wavelength on the object surface; the shape of the object surface is displayed on the basis of the luminances; and data concerning at least the object shape or the surface roughness curve is corrected so as to obtain a desired appearance of the object surface.
    Type: Application
    Filed: February 28, 2017
    Publication date: February 28, 2019
    Applicants: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY, MAKINO MILLING MACHINE CO., LTD.
    Inventors: Ryuta SATO, Takumi NAKANISHI, Mitsunari ODA, Nobu NAKAYAMA
  • Control device for machine tool
    Patent number: 10191460
    Abstract: A control device for a machine tool that moves a tool relative to a workpiece and/or vice versa and machines said workpiece. Said control device is provided with a display unit that displays information related to the machine tool, a first-layer generation unit that generates a first layer that contains machining information related to the machining being performed on the workpiece, and a second-layer generation unit that generates a second layer that contains an image or handwritten note related to the machining information in the first layer. The display unit displays an image consisting of the second layer superimposed onto the first layer.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: January 29, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie Kawai, Hideki Heishi, Kenichi Ono
  • CONTROL METHOD FOR MACHINE TOOL, AND MACHINE TOOL
    Publication number: 20190022812
    Abstract: This method, for controlling a machine tool using a tool holder to which a coolant pipe is attached, includes: a step of detecting, in response to a signal indicating that a tool is prepared on a tool loading station of the machine tool, whether or not an abnormality has occurred in attaching the coolant pipe to the tool holder of the tool while the tool holder is at the tool loading station; and a step of issuing an alarm when the abnormality is detected in the step of detecting the occurrence of the abnormality.
    Type: Application
    Filed: January 18, 2016
    Publication date: January 24, 2019
    Applicant: Makino Milling Machine Co., Ltd.
    Inventors: Shunsuke UENO, Takeshi KAWADA
  • Machine tool control device and machine tool
    Patent number: 10180675
    Abstract: A machine tool for machining a workpiece includes a control device for moving a rotating tool relative to the workpiece. The device includes an input information-reading unit and a path-setting unit. The input information-reading unit reads input information, which relates to a path along the contour of the workpiece or the tool path of a first rotating tool that follows the external form of the workpiece. The path-setting unit converts the input information read by the input information-reading unit to generate a tool path for performing the machining using the end cutting edge of a second rotating tool.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 15, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Junichi Maeda, Yasunori Masumiya, Yoshikazu Hattori
  • Pallet transport system of machine tool
    Patent number: 10179382
    Abstract: A pallet transport system of a machine tool promoting transport of a pallet for workpiece mounting use from a first stand to an adjoining second stand, wherein the first stand has a first mounting part which defines a first mounting surface, the second stand has a second mounting part which defines a second mounting surface, and the pallet has a mounted part attachable to the first and second mounting parts, along a transport direction of the pallet, includes a support mechanism turnably supporting at least one of the first stand, the second stand, and the pallet so that the orientations of a mounted surface defined by the mounted part and the second mounting surface match due to contact force between the mounted part and the second mounting part along with transport of the pallet from the first stand to the second stand along the first mounting surface.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: January 15, 2019
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Masaaki Miyazaki, Tomoya Murakami
  • Main spindle device for machine tool and machine tool
    Patent number: 10160075
    Abstract: The main spindle device for a machine tool is provided with: a bearing for rotatably supporting the main spindle; a bearing case for holding the bearing; a housing inside which the bearing case is disposed; and a stiffness-switching device, which supports the bearing case with respect to the housing and is able to switch the stiffness of the bearing case support between multiple levels. When the stiffness-switching device is supporting the bearing case at a low stiffness, the main spindle device is formed so that the bearing case slides with respect to the housing. A friction member is disposed on the area where the bearing case slides with respect to the housing.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: December 25, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Teppei Nebuka
  • MACHINE TOOL
    Publication number: 20180354088
    Abstract: A machine tool is configured so that: a first frequency band comprising the main shaft characteristic vibration frequency and a second frequency band comprising the mechanical structure characteristic vibration frequency are set; thresholds are stored for each of the set frequency bands; vibration components are extracted for each of the frequency bands from the output of a vibration sensor; and when the vibration amplitude exceeds a threshold in either of the frequency bands, an alarm is sounded.
    Type: Application
    Filed: December 11, 2015
    Publication date: December 13, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventor: Sakyo MATSUSHITA
  • Control device for machine tool
    Patent number: 10152044
    Abstract: This control device for a machine tool has a display unit that displays an input screen via which machining information regarding machining to be performed on a workpiece is inputted and an input unit via which letters and/or numbers are inputted into machining-information fields on the input screen. When a machining-information field on the input screen is selected, the display unit displays a first input-assistance screen corresponding to said field. Input-support buttons are laid out on said first input-assistance screen. When an input-support button is pressed, a second input-assistance screen is displayed, and via an operation performed in accordance with said second input-assistance screen, the aforementioned field is filled in.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 11, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Kenichi Ono, Toshimasa Uetama, Hideki Heishi, Rie Kawai
  • Machining method and a control device for a machine tool
    Patent number: 10146204
    Abstract: In this machining method, in which a rotary tool is moved relative to a workpiece and/or the workpiece is moved relative to the rotary tool so as to machine a curved surface on said workpiece, rotation in the direction of said curved surface is added to the workpiece such that the positions of reversal marks left on the curved surface per tool path are dispersed in the direction of said rotation.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: December 4, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori Masumiya, Kyohei Suzuki, Jun Kanaya
  • Control device for a machine tool
    Patent number: 10133258
    Abstract: A control apparatus for controlling a machine tool on the basis of a machining program is provided with a program analysis unit which analyzes an input machining program, a process table creation unit which, on the basis of the results of the analysis by the program analysis unit, creates a process table that sequentially lists processes according to the execution flow of the machining program, and a display unit which displays the process table created by the process table creation unit.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: November 20, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Rie Kawai, Hideki Heishi, Toshimasa Uetama, Kenichi Ono
  • Device for controlling machine tool
    Patent number: 10126732
    Abstract: This machine tool has a first rotating feed shaft around a first inclined axis line. Table coordinates are set ahead of time in the machine tool. The table coordinates have imaginary first, second and third linear motion axes that are perpendicular to each other, and an imaginary first rotating feed axis around an imaginary first axis line. The imaginary third linear motion axis is parallel to a third linear motion shaft. One imaginary linear motion axis of the imaginary first linear motion axis or the imaginary second linear motion axis is set above the surface of a workpiece attachment surface, and the imaginary first axis line is set parallel to the one imaginary linear motion axis. A computation unit computes the coordinate values of the imaginary first rotating feed axis in the table coordinates, and a display unit displays the coordinate values of the imaginary first rotating feed axis.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: November 13, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Kazunari Ishii, Takehito Shinada, Masashi Nagaya
  • TOOL PATH GENERATING METHOD
    Publication number: 20180307197
    Abstract: A tool path generation method includes inputting a first function derived from a polynomial expression including a plurality of coefficients representing a first curved surface, generating a first tool path based on the first function, inputting the first tool path to an NC device of a machine tool and machining a workpiece by relative movement between a tool and a workpiece along the first tool path, measuring the shape of the workpiece at a plurality of measurement points on a surface of the machined workpiece, calculating, for each of the measurement points, a symmetrical position with respect to the first curved surface in a direction perpendicular to the first curved surface as a correction point, obtaining a second function representing a second curved surface based on a series of position data of the correction points, and generating a second tool path based on the second function.
    Type: Application
    Filed: November 16, 2015
    Publication date: October 25, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Yasunori MASUMIYA, Kyohei SUZUKI
  • MACHINING CENTER
    Publication number: 20180304424
    Abstract: An upright machining center is characterized in being provided with: x-axis guides for moving and guiding a table in the left-right direction on a bed; a column provided on the bed and provided with an opening that straddles the x-axis guides in the front-back direction so that a moving body, on which the table is provided, can enter therein in the left-right direction; a saddle, which is disposed on the upper part of the column so as to be movable in the front-back direction and for which a first y-axis guide that extends in the front-back direction on the right side of the left-right direction and a left second y-axis guide that is located lower and parallel thereto are provided; and a main shaft head, which is disposed on the left side surface of the saddle and moves in the vertical direction.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 25, 2018
    Applicant: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Toshihiro SUZUKI, Shinji TERAKAWA, Takuma KAWARASAKI, Kenichiro SUZUKI
  • Workpiece machining surface display method showing dimples to be formed on mashing surface, workpiece machining surface display device showing the dimples, and tool path generation device having the display
    Patent number: 10108178
    Abstract: The invention is a workpiece machining surface display method by means of which a machining mark generated when a workpiece machining surface is machined by a rotary tool comprising a cutting edge is displayed on a display device. Said workpiece machining surface display method contains: a first step in which the shape and position of an indentation generated by the cutting edge shaving the workpiece machining surface are predicted; and a second step in which an indentation image representing the shape of the indentation that has been predicted in the first step is displayed in association with the predicted position.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 23, 2018
    Assignee: MAKINO MILLING MACHINE CO., LTD.
    Inventors: Jiro Yasukochi, Tadashi Kasahara