公开(公告)号：US20230041258A1

公开(公告)日：2023-02-09

申请号：US17789085

申请日：2020-10-14

Applicant: Hitachi, Ltd.

Inventor： Naoya OKIZAKI ,  Akihide TANAKA ,  Kazutoshi SUGIE ,  Naoki MORIHIRA ,  Isamu TAKAHASHI ,  Xudong ZHANG ,  Seunghwan PARK

IPC: B23K9/095 ,  B25J11/00

Abstract: A master unit includes a welding DB in which prescribed motion data associated with an object to be welded is stored, a state sensor which measures, as welding state data, a situation of welding by a robot which executes welding in a real environment according to the prescribed motion data, a simulated environment which imitates the real environment and notifies a worker of the welding state data, and a motion control unit which receives, as an input, worker motion data indicating a motion of welding by the worker from the simulated environment, operates the robot in the real environment by using the worker motion data instead of the prescribed motion data, and records, as new prescribed motion data, the input worker motion data in the welding DB.

公开(公告)号：US20170209954A1

公开(公告)日：2017-07-27

申请号：US15328280

申请日：2015-07-17

Applicant: HITACHI, LTD.

Inventor： Takahiko KATO ,  Kousuke KUWABARA ,  Tadashi FUJIEDA ,  Kinya AOTA ,  Isamu TAKAHASHI ,  Hiroyuki SATAKE ,  Kenji YAMAGA ,  Hajime MURAKAMI

IPC: B23K15/00 ,  B33Y70/00 ,  C22C30/00 ,  B22F1/00 ,  B22F9/08 ,  B33Y10/00 ,  B33Y80/00

CPC classification number: B23K15/0086 ,  B22F1/0003 ,  B22F3/1055 ,  B22F9/082 ,  B22F2009/0824 ,  B22F2009/0888 ,  B22F2998/10 ,  B23K15/0093 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C22C30/00 ,  C22C33/0257 ,  Y02P10/295 ,  C21C5/5211 ,  C21C7/0075 ,  C21C7/10

Abstract: An alloy structure has an arbitrary shape dimension which has high uniformity in the distribution of the element composition. The alloy structure contains Fe and at least four elements, which are selected from the group consisting of elements from atomic number 13 to atomic number 79 included in Group 3 to Group 16 of the periodic table of the elements and have a ratio of the atomic radius to an Fe atom of 0.83 or more but 1.17 or less, each of Fe and the four elements is contained in an atomic concentration range of 5 at % or more but 30 at % or less, a difference in atomic concentration between at least four elements among the at least four elements and Fe is in a range of less than 3 at %, and the alloy structure has, a column crystal in which the at least four elements and Fe are solid-dissolved.

公开(公告)号：US20250050586A1

公开(公告)日：2025-02-13

申请号：US18724042

申请日：2022-11-09

Applicant: HITACHI, LTD.

Inventor： Hirotsugu KAWANAKA ,  Tomonori KIMURA ,  Isamu TAKAHASHI ,  Yusuke YASUDA ,  Seunghwan PARK

IPC: B29C64/393 ,  B29C64/153 ,  B33Y50/02 ,  G06F30/27 ,  G06F113/10

Abstract: An additive manufacturing condition search device includes a defect database that accumulates a material, shape information, an additive manufacturing condition, monitoring information during modeling, and defect information in association with each other, a first machine learning unit that outputs an additive manufacturing condition corresponding to material information and device information, and outputs a new additive manufacturing condition from a combination of a plurality of the additive manufacturing conditions and the defect information, a specification unit that causes an additive manufacturing apparatus to perform modeling by the additive manufacturing condition, acquires the monitoring information during modeling, and acquires the shape information and the defect information by inspection of a modeled object, a second machine learning unit in which a model trained by using the defect database as train data estimates defect information of the modeled object from the monitoring information and stores the defect information in the defect database, and a determination unit that determines whether or not the defect information of the modeled object has achieved an evaluation target value.

公开(公告)号：US20220283035A1

公开(公告)日：2022-09-08

申请号：US17637168

申请日：2020-08-28

Applicant: Hitachi, Ltd. ,  Daikin Industries, Ltd.

Inventor： Akihide TANAKA ,  Hiroshi YOSHIKAWA ,  Shinya KANEKO ,  Isamu TAKAHASHI ,  Naoya OKIZAKI ,  Xudong ZHANG ,  Yasunori HAMA

IPC: G01J5/48 ,  B23K1/012

Abstract: A burner work measurement system configured to measure work using a burner is provided. The burner work measurement system includes one or more cameras configured to capture the work and a control unit configured to perform computing processing on images captured by the cameras, the control unit is configured to create work data obtained by calculating, based on the images captured by the cameras, at least one of a positional relation between a work object and the burner or flame, a positional relation between the work object and a brazing filler metal, and a positional relation between the burner or the flame and the brazing filler metal.

公开(公告)号：US20220339728A1

公开(公告)日：2022-10-27

申请号：US17627279

申请日：2020-02-26

Applicant: HITACHI, LTD.

Inventor： Naoya OKIZAKI ,  Akihide TANAKA ,  Isamu TAKAHASHI ,  Xudong ZHANG

IPC: B23K9/095 ,  B23K9/025 ,  B23K31/12

Abstract: An object of the present invention is to appropriately perform a welding quality control. Therefore, a welding work data accumulation device (100) includes: a measurement unit (4, 5, 7, 9, 11, and 16) that measures a welding motion and a welding phenomenon when a welding operator (1) grips a welding torch (2) and performs welding on a welded body (3); a data analysis unit (14) that extracts an appropriate combination of a welding motion feature amount (Tw, Ht, and Sp) and a welding phenomenon feature amount (Iw, S, and Ssym) in correction with time or coordinates based on data acquired by the measurement unit (4, 5, 7, 9, 11, and 16); and a data accumulation unit (15) that creates a database (70) based on an extraction result of the data analysis unit (14).

公开(公告)号：US20170209922A1

公开(公告)日：2017-07-27

申请号：US15327974

申请日：2015-07-17

Applicant: HITACHI, LTD.

Inventor： Takahiko KATO ,  Kousuke KUWABARA ,  Tadashi FUJIEDA ,  Kinya AOTA ,  Isamu TAKAHASHI ,  Kenji YAMAGA ,  Hiroyuki SATAKE ,  Hajime MURAKAMI

IPC: B22F1/00 ,  C22C30/00 ,  B22D23/00 ,  C22C1/02 ,  C22C1/06 ,  B22F9/08 ,  B33Y70/00

CPC classification number: B22F1/0014 ,  B22D23/00 ,  B22F3/1055 ,  B22F9/082 ,  B22F2009/0824 ,  B22F2009/0848 ,  B22F2998/10 ,  B33Y70/00 ,  C22C1/02 ,  C22C1/0433 ,  C22C1/06 ,  C22C30/00 ,  C22C33/0285 ,  Y02P10/295 ,  C21C5/5211 ,  C21C7/0075 ,  C21C7/10

Abstract: An alloy structure which has high uniformity in the distribution of the element composition and the mechanical strength and excellent high-temperature strength and corrosion resistance, contains Fe and at least four elements, which are selected from the group consisting of elements from atomic number 13 to atomic number 79, included in Group 3 to Group 16 of the periodic table of the elements, and have a ratio of the atomic radius to an Fe atom of 0.83 or more but 1.17 or less, each of the elements in an atomic concentration range of 5 at % or more but 30 at % or less, a difference in atomic concentration among the at least four elements and Fe is in a range of less than 3 at %, and the alloy structure has, as a main crystal, a column crystal in which the at least four elements and Fe are solid-dissolved.