Patents by Inventor Takeshi Ooki
Takeshi Ooki 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).
-
Publication number: 20230047823Abstract: Provided is a machine tool capable of reducing the influence of vibration from the side of a base of a vibration removal device. A machine tool is provided with: a vibration removal device that is provided on a base and that blocks the vibration transmitted from the base; a frame which is disposed on the vibration removal device and on which the machine tool body is placed; a container that is disposed on the base, that is for storing a liquid, and that is connected to a hose for discharging the stored liquid; and a flow path that is provided to the frame and that is for passing the liquid flowing from the machine tool body to the end of the frame and pouring the liquid into the container.Type: ApplicationFiled: January 12, 2021Publication date: February 16, 2023Inventors: Yuuya KAWASE, Yuuta ISHII, Takeshi OOKI
-
Patent number: 10180346Abstract: A weight measurement system and a weight measurement method using a robot, by which a weight greater than a weight capacity of the robot can be measured. The system has a robot, a robot controller for controlling the motion of the robot, and an arithmetic processing unit for calculating the weight of an article to be measured. The robot is configured to apply a force to a working point connected to a tank so that at least one of support points or a part of a support surface of the tank is lifted, and simultaneously, the remaining support point or the remaining part of the support surface of the tank is grounded. The weight of the tank containing processing fluid can be measured based on a relationship between the force applied to the working point by the robot and a lever ratio.Type: GrantFiled: January 9, 2017Date of Patent: January 15, 2019Assignee: FANUC CORPORATIONInventors: Kenzo Ebihara, Takeshi Ooki
-
Patent number: 9849551Abstract: A tool gripping mechanism includes a tool holder and a shaft to which the tool holder is attached. The shaft is fixed to a rotary shaft of a spindle device. A plurality of magnets are disposed in pairs on concentric circles on surfaces of the tool holder and the shaft which face each other. When the tool holder is in a specific phase with respect to the shaft, the magnets of the tool holder and the magnets of the shaft attract each other, and the tool holder is aligned with respect to the shaft in that phase.Type: GrantFiled: May 21, 2015Date of Patent: December 26, 2017Assignee: FANUC CORPORATIONInventors: Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20170199074Abstract: A weight measurement system and a weight measurement method using a robot, by which a weight greater than a weight capacity of the robot can be measured. The system has a robot, a robot controller for controlling the motion of the robot, and an arithmetic processing unit for calculating the weight of an article to be measured. The robot is configured to apply a force to a working point connected to a tank so that at least one of support points or a part of a support surface of the tank is lifted, and simultaneously, the remaining support point or the remaining part of the support surface of the tank is grounded. The weight of the tank containing processing fluid can be measured based on a relationship between the force applied to the working point by the robot and a lever ratio.Type: ApplicationFiled: January 9, 2017Publication date: July 13, 2017Applicant: FANUC CORPORATIONInventors: Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20150343582Abstract: A tool gripping mechanism includes a tool holder and a shaft to which the tool holder is attached. The shaft is fixed to a rotary shaft of a spindle device. A plurality of magnets are disposed in pairs on concentric circles on surfaces of the tool holder and the shaft which face each other. When the tool holder is in a specific phase with respect to the shaft, the magnets of the tool holder and the magnets of the shaft attract each other, and the tool holder is aligned with respect to the shaft in that phase.Type: ApplicationFiled: May 21, 2015Publication date: December 3, 2015Inventors: Kenzo EBIHARA, Takeshi OOKI
-
Patent number: 8277123Abstract: A fluid bearing structure with uniform depths of bearing concaves and a method of forming the bearing concaves in the fluid bearing structure. Pipe parts are inserted into through holes formed in the bearing base to form fluid spout holes for spouting fluid between confronting bearing surfaces. Bearing concaves are formed around the fluid spout holes. The bearing base and the pipe parts are made of different materials. A coating layer is formed on the bearing base and the pipe parts by an anodic oxidation process. Thickness of the coating layer on the bearing base is different from thickness of the coating layer on the pipe parts since the base member and the pipe members are made of different materials. The material on which a coating layer grows quickly is selected for the bearing base and the material on which a coating layer grows slowly is selected for the pipe parts.Type: GrantFiled: September 17, 2009Date of Patent: October 2, 2012Assignee: Fanuc LtdInventors: Masayuki Hamura, Kenzo Ebihara, Takeshi Ooki
-
Patent number: 8038385Abstract: A spindle device driven by driving fluid, having accurate rotation and superior quietness. The device includes a stator having at least one inlet for introducing the driving fluid, a rotor having at least one flange arranged outside of the stator and provided with nozzles for jetting the driving fluid, and a static-pressure fluid bearing for rotatably supporting the rotor with respect to the stator. The stator has a first inner path for conducting the driving fluid introduced from the inlet to the rotor and the rotor has a second inner path communicating with the first inner path of the stator for conducting the driving fluid to the nozzles. The driving fluid introduced from the inlet of the stator is jetted from the nozzles of the rotor through the first and second inner paths to rotate the rotor.Type: GrantFiled: December 15, 2008Date of Patent: October 18, 2011Assignee: Fanuc LtdInventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Patent number: 7901477Abstract: An interior of a machine tool and a machining area are divided for communication by a labyrinth. The machining area is covered by a cover. Air discharged from an air bearing flows from the machine tool interior into the machining area through the labyrinth. The cover for the machining area is provided with an exhaust unit for discharging the air from the air bearing or a mist produced in the machining area to the outside of the machine tool.Type: GrantFiled: May 28, 2008Date of Patent: March 8, 2011Assignee: Fanuc LtdInventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20100195943Abstract: A fluid bearing structure with uniform depths of bearing concaves and a method of forming the bearing concaves in the fluid bearing structure. Pipe parts are inserted into through holes formed in the bearing base to form fluid spout holes for spouting fluid between confronting bearing surfaces. Bearing concaves are formed around the fluid spout holes. The bearing base and the pipe parts are made of different materials. A coating layer is formed on the bearing base and the pipe parts by an anodic oxidation process. Thickness of the coating layer on the bearing base is different from thickness of the coating layer on the pipe parts since the base member and the pipe members are made of different materials. The material on which a coating layer grows quickly is selected for the bearing base and the material on which a coating layer grows slowly is selected for the pipe parts.Type: ApplicationFiled: September 17, 2009Publication date: August 5, 2010Applicant: FANUC LTDInventors: Masayuki HAMURA, Kenzo EBIHARA, Takeshi OOKI
-
Publication number: 20090229246Abstract: A spindle device driven by driving fluid, having accurate rotation and superior quietness. The device includes a stator having at least one inlet for introducing the driving fluid, a rotor having at least one flange arranged outside of the stator and provided with nozzles for jetting the driving fluid, and a static-pressure fluid bearing for rotatably supporting the rotor with respect to the stator. The stator has a first inner path for conducting the driving fluid introduced from the inlet to the rotor and the rotor has a second inner path communicating with the first inner path of the stator for conducting the driving fluid to the nozzles. The driving fluid introduced from the inlet of the stator is jetted from the nozzles of the rotor through the first and second inner paths to rotate the rotor.Type: ApplicationFiled: December 15, 2008Publication date: September 17, 2009Applicant: FANUC LTDInventors: Tomohiko KAWAI, Kenzo EBIHARA, Takeshi OOKI
-
Publication number: 20080314004Abstract: An interior of a machine tool and a machining area are divided for communication by a labyrinth. The machining area is covered by a cover. Air discharged from an air bearing flows from the machine tool interior into the machining area through the labyrinth. The cover for the machining area is provided with an exhaust unit for discharging the air from the air bearing or a mist produced in the machining area to the outside of the machine tool.Type: ApplicationFiled: May 28, 2008Publication date: December 25, 2008Applicant: FANUC LTDInventors: Tomohiko KAWAI, Kenzo EBIHARA, Takeshi OOKI
-
Publication number: 20070145932Abstract: A controller for a machine tool, capable of performing ultraprecision machining with high accuracy by performing correction allowing for a displacement of a spindle produced depending on a rotational speed. When the spindle is rotated at high speed, the cutting position of a tool attached to the spindle varies due to the influence of spindle fitting accuracy and of weight balance. By measuring the displacements in the X, Y and Z directions of the end of the tool attached to the spindle by means of non-contact displacement gauges, correction amounts are obtained in the manner associated with the rotational speed of the spindle, and stored in a storage device. In the process of machining, correction amounts are read depending on the speed of the spindle, and machining is performed according to program command values corrected using the correction amounts thus read. Even if the cutting position of the tool varies during high-speed rotation, machining is performed according to program command values corrected.Type: ApplicationFiled: December 21, 2006Publication date: June 28, 2007Inventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20070028716Abstract: A plurality of balancing structures are disposed in weight accommodation holes which extend in a radial direction and spaced at equal angles in a rotating plate constituting part of a rotating body on which a rotation object is mounted. A balancing weight having a male thread is disposed in each weight accommodation hole and is screwed into a female thread formed in the accommodation hole. A spring adjoining the weight is compressed by a stopper fixed in the weight accommodation hole at the outer end of the rotating plate. The weight can be turned with a tool inserted through holes provided in the spring and stopper to adjust the radial position of the weight and thereby balance the rotating body.Type: ApplicationFiled: July 5, 2006Publication date: February 8, 2007Applicant: FANUC LTDInventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20060280571Abstract: The invention provides a simplified holding structure for a tool for a machine tool that makes accurate tool holding possible. The tool shank is inserted through a through hole of a sleeve and into a tool shank insertion hole. The sleeve insertion part is inserted into a large-diameter part and fixed coaxially to the spindle with bolts or the like, so as to axially compress at least one annular elastic member provided on the large-diameter part. A first shank-supporting portion is provide inside the tool shank insertion hole and a second shank-supporting portion is provided on the sleeve through hole. A front end part of the insertion part is semicircular or trapezoidal in axial cross-section. The tool shank insertion hole, the sleeve through hole and the annular elastic member have cross-sections in directions perpendicular to the axis of the tool shank shaped that match the tool shank.Type: ApplicationFiled: June 13, 2006Publication date: December 14, 2006Applicant: FANUC LTDInventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Publication number: 20060182373Abstract: A fluid bearing which levitates a slider can be configured by providing bearing fluid spraying outlets in appropriate positions on the effective bearing surface of the slider facing each guide surface of a linear bearing. To prevent foreign matter from entering the clearances between bearing surfaces, foreign matter purging fluid outlets are provided at the lower front and lower back ends of the slider to spray a fluid onto the exposed parts of each guide surface.Type: ApplicationFiled: February 15, 2006Publication date: August 17, 2006Applicant: FANUC LTDInventors: Tomohiko Kawai, Kenzo Ebihara, Takeshi Ooki
-
Patent number: D781357Type: GrantFiled: March 29, 2016Date of Patent: March 14, 2017Assignee: Fanuc CorporationInventors: Harutora Inaba, Takeshi Ooki
-
Patent number: D946067Type: GrantFiled: September 25, 2019Date of Patent: March 15, 2022Assignee: FANUC CORPORATIONInventors: Takeshi Ooki, Yonpyo Hon, Hiroshi Minami, Harutora Inaba