Patents by Inventor Keita ASANO
Keita ASANO 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: 11891840Abstract: A safety door device according to an aspect includes: a full closing detector for detecting that a safety door has fully closed from an opened state; a locking mechanism for locking the safety door so that the safety door does not open; a measurement unit (acceleration sensor, control unit for measuring a travel acceleration, a travel speed, or a travel time when the safety door closes; and a control unit for controlling the locking mechanism to lock the safety door when the safety door is detected to be fully closed. If the travel acceleration or the travel speed is greater than a first threshold, or if the travel time is shorter than a second threshold, then the control unit does not cause the safety door to be locked.Type: GrantFiled: December 16, 2020Date of Patent: February 6, 2024Assignee: FANUC CORPORATIONInventor: Keita Asano
-
Publication number: 20210189774Abstract: A safety door device according to an aspect includes: a full closing detector for detecting that a safety door has fully closed from an opened state; a locking mechanism for locking the safety door so that the safety door does not open; a measurement unit (acceleration sensor, control unit for measuring a travel acceleration, a travel speed, or a travel time when the safety door closes; and a control unit for controlling the locking mechanism to lock the safety door when the safety door is detected to be fully closed. If the travel acceleration or the travel speed is greater than a first threshold, or if the travel time is shorter than a second threshold, then the control unit does not cause the safety door to be locked.Type: ApplicationFiled: December 16, 2020Publication date: June 24, 2021Inventor: Keita ASANO
-
Connecting structure of end piece and outer cable in Bowden cable and method for connecting the same
Patent number: 10508680Abstract: In a Bowden cable, a shield thereof is formed from a hollow strand that is formed by twisting a plurality of metal individual wires. An end part of this hollow strand is exposed by removing an outer skin and is increased in diameter, thereby forming a first flare part. An end part of a liner is also increased in diameter to form a second flare part. An end piece is injection molded so as to envelop these flare parts. A synthetic resin as a material of this end piece is made to enter between the metal individual wires. The end piece includes a mounting part and a bent pipe part for covering and surrounding an outer periphery of an outer cable in a state in which the outer cable is curved. The mounting part and the bent pipe part are formed as a unit by injection molding.Type: GrantFiled: March 22, 2017Date of Patent: December 17, 2019Assignee: Yamato Industrial Co., Ltd.Inventors: Keita Asano, Kengo Maeda -
Patent number: 10493581Abstract: A machine tool has a splash guard and a guiding section. The splash guard has a first sidewall portion on which an end portion of a telescopic cover abuts, a slope portion slanting from the first sidewall portion along an expansion and contraction direction of the telescopic cover, a second sidewall portion perpendicularly extending downward from the slope portion, and a bottom portion horizontally extending from the second sidewall portion more inward than a lower end of the slope portion in the splash guard. The guiding section is disposed more inward than the lower end of the slope portion in the splash guard and configured to guide the cutting fluid falling from the slope portion, toward the bottom portion.Type: GrantFiled: December 7, 2018Date of Patent: December 3, 2019Assignee: FANUC CORPORATIONInventor: Keita Asano
-
Patent number: 10449645Abstract: A machine tool is equipped with a second supply pipe having elasticity and having one end side fixed to a spindle head and the other end side fixed to an arm portion, a cover provided within a machining area, and rollers. When the spindle head is moved in a direction to come close to the arm portion, the second supply pipe is bent and then a portion of the second supply pipe is brought into abutment against the cover. The rollers are provided at a portion of the cover against which the second supply pipe is brought into abutment, and are configured to reduce friction between the cover and the second supply pipe when the second supply pipe moves relative to the cover in an abutment state against the cover.Type: GrantFiled: March 14, 2018Date of Patent: October 22, 2019Assignee: FANUC CORPORATIONInventor: Keita Asano
-
Publication number: 20190176283Abstract: A machine tool has a splash guard and a guiding section. The splash guard has a first sidewall portion on which an end portion of a telescopic cover abuts, a slope portion slanting from the first sidewall portion along an expansion and contraction direction of the telescopic cover, a second sidewall portion perpendicularly extending downward from the slope portion, and a bottom portion horizontally extending from the second sidewall portion more inward than a lower end of the slope portion in the splash guard. The guiding section is disposed more inward than the lower end of the slope portion in the splash guard and configured to guide the cutting fluid falling from the slope portion, toward the bottom portion.Type: ApplicationFiled: December 7, 2018Publication date: June 13, 2019Inventor: Keita ASANO
-
Patent number: 10208522Abstract: A machine tool according to the present invention is provided with a door opening/closing device including a movable door, a door opening/closing drive motor configured to drive the movable door, a power transferring mechanism configured to transfer power of the door opening/closing drive motor to the movable door. The machine tool includes a disturbance torque estimation unit configured to estimate a disturbance torque applied to the door opening/closing drive motor at an opening/closing operation of the movable door, a torque comparison unit configured to compare the disturbance torque estimated by the disturbance torque estimation unit to a predetermined first upper limit and a predetermined first lower limit, and a motor stop unit configured to stop the opening/closing operation of the movable door when the torque comparison unit determines that the disturbance torque is larger than the first upper limit or smaller than the first lower limit.Type: GrantFiled: December 15, 2016Date of Patent: February 19, 2019Assignee: FANUC CORPORATIONInventor: Keita Asano
-
CONNECTING STRUCTURE OF END PIECE AND OUTER CABLE IN BOWDEN CABLE AND METHOD FOR CONNECTING THE SAME
Publication number: 20180274582Abstract: In a Bowden cable, a shield thereof is formed from a hollow strand that is formed by twisting a plurality of metal individual wires. An end part of this hollow strand is exposed by removing an outer skin and is increased in diameter, thereby forming a first flare part. An end part of a liner is also increased in diameter to form a second flare part. An end piece is injection molded so as to envelop these flare parts. A synthetic resin as a material of this end piece is made to enter between the metal individual wires. The end piece includes a mounting part and a bent pipe part for covering and surrounding an outer periphery of an outer cable in a state in which the outer cable is curved. The mounting part and the bent pipe part are formed as a unit by injection molding.Type: ApplicationFiled: March 22, 2017Publication date: September 27, 2018Inventors: Keita ASANO, Kengo MAEDA -
Publication number: 20180264608Abstract: A machine tool is equipped with a second supply pipe having elasticity and having one end side fixed to a spindle head and the other end side fixed to an arm portion, a cover provided within a machining area, and rollers. When the spindle head is moved in a direction to come close to the arm portion, the second supply pipe is bent and then a portion of the second supply pipe is brought into abutment against the cover. The rollers are provided at a portion of the cover against which the second supply pipe is brought into abutment, and are configured to reduce friction between the cover and the second supply pipe when the second supply pipe moves relative to the cover in an abutment state against the cover.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Applicant: FANUC CORPORATIONInventor: Keita Asano
-
Publication number: 20170371313Abstract: A machine tool according to the present invention is provided with a door opening/closing device including a movable door, a door opening/closing drive motor configured to drive the movable door, a power transferring mechanism configured to transfer power of the door opening/closing drive motor to the movable door. The machine tool includes a disturbance torque estimation unit configured to estimate a disturbance torque applied to the door opening/closing drive motor at an opening/closing operation of the movable door, a torque comparison unit configured to compare the disturbance torque estimated by the disturbance torque estimation unit to a predetermined first upper limit and a predetermined first lower limit, and a motor stop unit configured to stop the opening/closing operation of the movable door when the torque comparison unit determines that the disturbance torque is larger than the first upper limit or smaller than the first lower limit.Type: ApplicationFiled: December 15, 2016Publication date: December 28, 2017Inventor: Keita ASANO
-
Patent number: 9694458Abstract: An interior cleaning device for a machine tool includes a pipe arranged inside a cover covering at least a periphery of a machining section of the machine tool, and a pump for supplying liquid into the pipe, the interior cleaning device being for ejecting liquid from the pipe and cleaning accumulated substances accumulated inside the cover, wherein the pipe includes a first pipe provided with a first ejection section for ejecting liquid or air into the cover, and a second pipe installed inside the first pipe and that is provided with a second ejection section at a part facing other than downward in a vertical direction.Type: GrantFiled: May 13, 2015Date of Patent: July 4, 2017Assignee: FANUC CORPORATIONInventor: Keita Asano
-
Publication number: 20170176969Abstract: A machine tool according to the present invention is provided with a door opening/closing device including a movable door, a door opening/closing drive motor configured to drive the movable door, a power transferring mechanism configured to transfer power of the door opening/closing drive motor to the movable door. The machine tool includes a disturbance torque estimation unit configured to estimate a disturbance torque applied to the door opening/closing drive motor at an opening/closing operation of the movable door, a torque comparison unit configured to compare the disturbance torque estimated by the disturbance torque estimation unit to a predetermined first upper limit and a predetermined first lower limit, and a motor stop unit configured to stop the opening/closing operation of the movable door when the torque comparison unit determines that the disturbance torque is larger than the first upper limit or smaller than the first lower limit.Type: ApplicationFiled: December 15, 2016Publication date: June 22, 2017Inventor: Keita ASANO
-
Patent number: 9457444Abstract: A machine tool includes a table, a saddle, and first and second telescopic covers respectively disposed on two side surfaces of the table or the saddle. The two side surfaces are opposite each other along the direction of travel of the table or the saddle. Upper surfaces of the first and second telescopic covers are inclined in opposite directions perpendicular to the direction of travel of the table or the saddle.Type: GrantFiled: March 21, 2014Date of Patent: October 4, 2016Assignee: FANUC CORPORATIONInventor: Keita Asano
-
Publication number: 20150328667Abstract: An interior cleaning device for a machine tool includes a pipe arranged inside a cover covering at least a periphery of a machining section of the machine tool, and a pump for supplying liquid into the pipe, the interior cleaning device being for ejecting liquid from the pipe and cleaning accumulated substances accumulated inside the cover, wherein the pipe includes a first pipe provided with a first ejection section for ejecting liquid or air into the cover, and a second pipe installed inside the first pipe and that is provided with a second ejection section at a part facing other than downward in a vertical direction.Type: ApplicationFiled: May 13, 2015Publication date: November 19, 2015Inventor: Keita ASANO
-
Publication number: 20140286721Abstract: A machine tool includes a table, a saddle, and first and second telescopic covers respectively disposed on two side surfaces of the table or the saddle. The two side surfaces are opposite each other along the direction of travel of the table or the saddle. Upper surfaces of the first and second telescopic covers are inclined in opposite directions perpendicular to the direction of travel of the table or the saddle.Type: ApplicationFiled: March 21, 2014Publication date: September 25, 2014Applicant: FANUC CorporationInventor: Keita ASANO