Patents by Inventor Tohru Mizuno

Tohru Mizuno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10802466
    Abstract: To more effectively utilize data related to machining by a machine tool. An integrated machining system includes: a database that stores, as hierarchized structured data, production data related to steps from design until machining, including data of machining commands to be executed by a machine tool, and data of machining history corresponding to the data of machining commands; and a production data management device that includes a provided information generation unit that generates provided information to be provided externally, by way of acquiring at least either of the data of machining commands and the data of machining history from the database, and referencing a hierarchized structure to acquire elements of data related to specific information.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 13, 2020
    Assignee: FANUC CORPORATION
    Inventors: Tohru Mizuno, Fumihiro Miura
  • Publication number: 20200117166
    Abstract: An object of the present invention is to more appropriately acquire machining information on a machine tool. A machining information recording device of the present invention includes: a machining monitor unit (state amount acquisition unit) which acquires a state amount indicating the state of machining performed with a machine tool; and a performance management unit (an acquisition condition setting unit, an acquisition control unit) which sets, based on the state of the machining, a state amount acquisition condition for acquiring the state amount and which controls the acquisition of the state amount based on the state amount acquisition condition that is set.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 16, 2020
    Applicant: FANUC CORPORATION
    Inventor: Tohru MIZUNO
  • Publication number: 20190129378
    Abstract: To more effectively utilize data related to machining by a machine tool. An integrated machining system includes: a database that stores, as hierarchized structured data, production data related to steps from design until machining, including data of machining commands to be executed by a machine tool, and data of machining history corresponding to the data of machining commands; and a production data management device that includes a provided information generation unit that generates provided information to be provided externally, by way of acquiring at least either of the data of machining commands and the data of machining history from the database, and referencing a hierarchized structure to acquire elements of data related to specific information.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 2, 2019
    Inventors: Tohru MIZUNO, Fumihiro MIURA
  • Patent number: 10088825
    Abstract: A tool path curve generation method for generating a curve from a tool path designated by a command point sequence includes: a step of defining a region based on a polygonal line path connecting the command point sequence; a step of determining whether the curve is included in the region on the basis of the geometric shape of the surface of the region; and a step of generating a curve that has been determined to be included in the region in the determination step.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: October 2, 2018
    Assignee: FANUC CORPORATION
    Inventors: Tohru Mizuno, Takuji Chiba
  • Patent number: 9696708
    Abstract: A machining curve creating apparatus create curve of a tool used to machine a workpiece by repeating a procedure of taking, as a partial point sequence, a part of a point sequence expressing the tool path and generating a partial curve. The machining curve creating apparatus includes stored-information-utilized curve generating unit for generating a partial curve utilizing segmented curve information. When curve information utilization determining unit determines to utilize the stored information, the stored-information-utilized curve generating unit generates a partial curve.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: July 4, 2017
    Assignee: FANUC Corporation
    Inventors: Tohru Mizuno, Takuji Chiba
  • Publication number: 20160154400
    Abstract: A tool path curve generation method for generating a curve from a tool path designated by a command point sequence includes: a step of defining a region based on a polygonal line path connecting the command point sequence; a step of determining whether the curve is included in the region on the basis of the geometric shape of the surface of the region; and a step of generating a curve that has been determined to be included in the region in the determination step.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 2, 2016
    Inventors: Tohru MIZUNO, Takuji CHIBA
  • Publication number: 20150112474
    Abstract: A machining curve creating apparatus create curve of a tool used to machine a workpiece by repeating a procedure of taking, as a partial point sequence, a part of a point sequence expressing the tool path and generating a partial curve. The machining curve creating apparatus includes stored-information-utilized curve generating unit for generating a partial curve utilizing segmented curve information. When curve information utilization determining unit determines to utilize the stored information, the stored-information-utilized curve generating unit generates a partial curve.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 23, 2015
    Inventors: Tohru MIZUNO, Takuji CHIBA
  • Patent number: 8843230
    Abstract: A machining time predicting apparatus of a numerically controlled machine tool divides a tool path into a plurality of segments, obtains a speed in a tangential direction of each of the divided segments, calculates a time taken for the tool to move on each segment, and obtains the total of the calculated times taken for the tool to move on each segment as a tool moving time, in order to calculate a time (tool moving time) taken for the tool to move on the designated tool path according to an NC command.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: September 23, 2014
    Assignee: FANUC Corporation
    Inventors: Tohru Mizuno, Takuji Chiba
  • Publication number: 20120109359
    Abstract: A machining time predicting apparatus of a numerically controlled machine tool divides a tool path into a plurality of segments, obtains a speed in a tangential direction of each of the divided segments, calculates a time taken for the tool to move on each segment, and obtains the total of the calculated times taken for the tool to move on each segment as a tool moving time, in order to calculate a time (tool moving time) taken for the tool to move on the designated tool path according to an NC command.
    Type: Application
    Filed: July 22, 2011
    Publication date: May 3, 2012
    Applicant: FANUC Corporation
    Inventors: Tohru MIZUNO, Takuji CHIBA
  • Patent number: 6401006
    Abstract: A controller to smoothly change speed of a machining tool to improve machining accuracy and speed of a machine. The controller includes a command analyzing section included in a block structure of software that analyzes a command program and converts it to data appropriate for use in a primary interpolation section. The primary interpolation section performs interpolation calculation in each first sampling period to obtain an interpolation point on a commanded path, and outputs the obtained interpolation point to an intermediate memory. The intermediate memory stores a motion amount for each axis, a feed rate and a block length. An acceleration/deceleration control section performs acceleration/deceleration control based on the data stored in the intermediate memory, and calculates speed in each second sampling period which is shorter than the first sampling period, to output the calculated speed to a secondary interpolation section.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: June 4, 2002
    Assignee: Fanuc Ltd.
    Inventors: Tohru Mizuno, Toshiaki Otsuki, Shouichi Sagara, Yasuhiro Saito
  • Patent number: 5485552
    Abstract: A method of teaching a robot motion program, which facilitates the preparation of programs, and in which a required one of a plurality standard motion programs for operating a robot in accordance with stereotyped motion patterns is read from a memory of a robot control device and displayed on a display screen of a teaching control panel. An operator operates the teaching control panel to add, though the display screen, position and speed data etc. to the standard motion program, or modify, through the display screen, the data previously described in the standard motion program, whereby a motion program for a robot operation to be performed in accordance with a sterotyped motion pattern or a pattern similar thereto can be created easily.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: January 16, 1996
    Assignee: Fanuc Ltd.
    Inventors: Tohru Mizuno, Tatsuo Karakama, Ryo Nihei, Takenobu Miura
  • Patent number: 5066847
    Abstract: According to a path correction method in an automatic welding machine in accordance with the invention, the torch TC of a welding machine is grasped by a robot and welding is performed while the welding torch is weaved to the left and right of a welding line. At such time, an integrated value of welding current of the torch weaved with respect to a given welding line is computed every half cycle, the correction direction is decided, the amount of correction is decided by performing a computation, which is based on the integrated value, in dependence upon the correction direction decided, and the weaving path of the torch is corrected by multiplying the decided amount of correction by a predetermined coefficient.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: November 19, 1991
    Assignee: Fanuc Ltd.
    Inventors: Hajimu Kishi, Tohru Mizuno, Yuichi Kanda
  • Patent number: 5057995
    Abstract: A robot control apparatus programmably controls a taught/playback-type robot. The control apparatus has processing control means (CPU) which converts a group of position data contained in a plurality of robot command data inputted from a teaching panel into set-type command data together with other robot command data, stores the converted command data in a data memory (RAM), and creates a robot motion program by editing the command data.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: October 15, 1991
    Assignee: Fanuc Ltd.
    Inventors: Tohru Mizuno, Tetsuya Kosaka
  • Patent number: 5008834
    Abstract: A robot control apparatus has robot control conditions set by a monitor program described in a robot language. Since a system program ordinarily is fixedly designed into a robot control apparatus, the program cannot be freely set and modified by the user. However, by storing part of the system program for constantly monitoring robot operations in a user area USER and making this part of the system program open to a user, unnecessary functions can be deleted, presently existing functions can be modified and functions can be added.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: April 16, 1991
    Assignee: Fanuc Ltd.
    Inventors: Tohru Mizuno, Takayuki Ito
  • Patent number: 4969109
    Abstract: A robot control apparatus is provided, including a for storing a plurality of approach patterns related to hand movement for when workpieces gripped by a robot hand are stacked and unstacked at predetermined locations. Approach pattern from a position at which movement of the robot hand starts to a motion position at which a workpiece is stacked or unstacked, and from this motion position to a position at which movement of the robot hand ends can be selected at will depending upon the type of workpiece and the motion position.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: November 6, 1990
    Assignee: Fanuc Ltd
    Inventors: Tohru Mizuno, Haruyuki Ishikawa
  • Patent number: 4857700
    Abstract: The arc current is divided into two areas each corresponding to a 1/4 period of weaving, the two areas are compared with each other, and an area corresponding to a predetermined time period at the end portion of the larger area is substrated from the larger area and another area comparison is performed. The movement of the welding torch is compensated in accordance with the predetermined correction function, so that, even when an actual weld line of base metals to be welded deviates from an instructed weld line, the welding torch is correctly moved along the weld line of the base materials and arc welding is performed.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: August 15, 1989
    Assignee: Fanuc Ltd.
    Inventors: Kenichi Toyoda, Tohru Mizuno, Nobutoshi Torii, Yuichi Kanda, Shigehiro Morikawa
  • Patent number: 4815011
    Abstract: A robot control apparatus which controls a robot by a program language and which has keys and a display which displays at least one block of data, cyclically selects the word to be changed, in the one block of data is displayed, to be compiled with the desired block and stores the data in that compiled form, so that syntax errors are avoided and it is possible to compile a desired block easily and in a short time.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: March 21, 1989
    Assignee: Fanuc Ltd.
    Inventors: Tohru Mizuno, Haruyuki Ishikawa