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公开(公告)号：US11535942B2
公开(公告)日：2022-12-27
申请号：US17276630
申请日：2018-09-18
发明人： Hirohisa Shibayama , Hidenobu Matsuyama , Eiji Shiotani , Yoshitsugu Noshi , Koukichi Kamada , Naoki Okamoto , Masahito Fujikawa , Junichi Hamasaki , Masatoshi Inoguchi
摘要： When forming valve seat coats at opening portions (16a1 to 16a8) of intake ports (16) provided at a cylinder block mounting surface (12a) of a semimanufactured cylinder head (3), the nozzle of a cold spray apparatus moves along a nozzle movement path for air intake (Inp1) that is set between any two of the plurality of opening portions (16a1 to 16a8), while continuing to spray a raw material powder. When forming valve seat coats at opening portions (17a1 to 17a8) of exhaust ports (17), the nozzle moves along a nozzle movement path for air exhaust (Enp1) that is set between any two of the plurality of opening portions (17a1 to 17a8), while continuing to spray the raw material powder.
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公开(公告)号：US11891699B2
公开(公告)日：2024-02-06
申请号：US17257937
申请日：2018-07-06
发明人： Masahito Fujikawa , Hidenobu Matsuyama , Eiji Shiotani , Yoshitsugu Noshi , Hirohisa Shibayama , Koukichi Kamada , Naoki Okamoto , Junichi Hamasaki
摘要： The nozzle for cold spray (25) used in a cold spray apparatus (2) is configured to include a tubular nozzle main body (252) and a cooling jacket (253) that surrounds the nozzle main body (252) to form a flow path (25e) for refrigerant (R) between the nozzle main body (252) and the cooling jacket (253). The cooling jacket (253) is provided with a seal retaining portion (253c) that retains an O-ring (253b) for the flow path (25e). The seal retaining portion (253c) and the nozzle main body (252) are joined in a socket-and-spigot joint fashion.
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公开(公告)号：US11471937B2
公开(公告)日：2022-10-18
申请号：US17253933
申请日：2018-06-28
摘要： The disclosure includes manufacturing a semimanufactured cylinder head (3) having a shielding curtain portion (16g) and spraying metal powder (P) onto an annular valve seat portion (16f) using a cold spray method to form a valve seat film (16b). The shielding curtain portion (16g) projects in an annular shape from an annular edge portion of an opening portion (16a) of an intake port (16) or an opening portion (17a) of an exhaust port (17) toward the center (C) of the port. The annular valve seat portion (16f) is located on an outer side of the port than the shielding curtain portion (16g).
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公开(公告)号：US10339645B2
公开(公告)日：2019-07-02
申请号：US15720077
申请日：2017-09-29
发明人： Hirohisa Shibayama , Eiji Shiotani , Satoru Sakurai , Kiyokazu Sugiyama , Akira Shimizu , Daisuke Terada , Yoshitsugu Noshi , Yoshito Utsumi
IPC分类号： G06K9/00 , G06T7/00 , B24B33/02 , B23Q17/24 , G01B11/30 , G01B11/22 , G01N21/88 , G06T7/507 , B05B9/01 , B05B13/06 , G01N21/954 , G06T7/62
摘要： Provided is a defect detection device capable of measuring the volume of surface defects. The defect detection device includes: an imaging device configured to image an image of an inspection object; a binarization processing unit configured to subject the image to first and second binarization processing by use of different first and second binarization thresholds, so as to calculate first and second sizes for an identical defect in the image; a ratio calculation unit configured to calculate a first ratio of the second size to the first size; and a depth determination unit configured to determine a depth of the defect depending on the first ratio.
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公开(公告)号：US20170161886A1
公开(公告)日：2017-06-08
申请号：US15324250
申请日：2014-07-08
发明人： Hirohisa Shibayama , Eiji Shiotani , Satoru Sakurai , Kiyokazu Sugiyama , Akira Shimizu , Daisuke Terada , Yoshitsugu Noshi , Yoshito Utsumi
CPC分类号： G06T7/0004 , B05B9/01 , B05B13/06 , B23Q17/24 , B24B33/02 , G01B11/22 , G01B11/30 , G01N21/88 , G01N21/954 , G01N2021/9548 , G01N2201/10 , G01N2201/12 , G06T7/507 , G06T7/62 , G06T2207/30108 , G06T2207/30148
摘要： Provided is a defect detection device capable of measuring the volume of surface defects. The defect detection device includes: an imaging device configured to image an image of an inspection object; a binarization processing unit configured to subject the image to first and second binarization processing by use of different first and second binarization thresholds, so as to calculate first and second sizes for an identical defect in the image; a ratio calculation unit configured to calculate a first ratio of the second size to the first size; and a depth determination unit configured to determine a depth of the defect depending on the first ratio.
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公开(公告)号：US12024779B2
公开(公告)日：2024-07-02
申请号：US17598922
申请日：2019-03-29
发明人： Hirohisa Shibayama , Koukichi Kamada , Naoya Tainaka , Yoshito Utsumi , Hidenobu Matsuyama , Eiji Shiotani , Toshio Ogiya , Haruhiko Suzuki
CPC分类号： C23C24/04 , B22D19/0009 , B22D19/0081 , F02F1/00 , F02F2200/06
摘要： A film forming method forms a coating film on a workpiece having at least two film-deposited portions which are not continuous with each other by moving a nozzle of a cold spray device relative to each other along a continuous movement trajectory. The movement trajectory includes at least two trajectories corresponding to the film-deposited portions and a connecting trajectory linking the trajectories of the film-deposited portions. The film-deposited portions are formed by continuously spraying a raw material powder from the nozzle by cold spraying to form a coating film on each of the plurality of film-deposited portions. A turnback point of the spraying is set on the connecting trajectory where a relative speed between the workpiece and the nozzle decreases in the movement trajectory.
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公开(公告)号：US20180025486A1
公开(公告)日：2018-01-25
申请号：US15720077
申请日：2017-09-29
发明人： Hirohisa Shibayama , Eiji Shiotani , Satoru Sakurai , Kiyokazu Sugiyama , Akira Shimizu , Daisuke Terada , Yoshitsugu Noshi , Yoshito Utsumi
CPC分类号： G06T7/0004 , B05B9/01 , B05B13/06 , B23Q17/24 , B24B33/02 , G01B11/22 , G01B11/30 , G01N21/88 , G01N21/954 , G01N2021/9548 , G01N2201/10 , G01N2201/12 , G06T7/507 , G06T7/62 , G06T2207/30108 , G06T2207/30148
摘要： Provided is a defect detection device capable of measuring the volume of surface defects. The defect detection device includes: an imaging device configured to image an image of an inspection object; a binarization processing unit configured to subject the image to first and second binarization processing by use of different first and second binarization thresholds, so as to calculate first and second sizes for an identical defect in the image; a ratio calculation unit configured to calculate a first ratio of the second size to the first size; and a depth determination unit configured to determine a depth of the defect depending on the first ratio.
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公开(公告)号：US11827985B2
公开(公告)日：2023-11-28
申请号：US17598930
申请日：2019-03-29
发明人： Koukichi Kamada , Hirohisa Shibayama , Naoya Tainaka , Yoshito Utsumi , Hidenobu Matsuyama , Eiji Shiotani , Toshio Ogiya , Haruhiko Suzuki
摘要： A film forming method forms a coating film on a workpiece (e.g., a cylinder head) having a film-deposited portion (e.g., an annular valve seat part) by moving a nozzle of a cold spray device relative to the workpiece along a film formation trajectory having a film formation starting point and a film formation finishing point in which the film-deposited portion overlaps to form an overlapping portion. The coating film is formed by causing a raw material powder to collide in a solid-phase state with the workpiece and plastically deform. Also, the coating film on the film-deposited portion is further formed such that an inclination angle of an end part of the coating film relative to a surface of the film-deposited portion is 45° or less at the film formation starting point of the overlapping portion.
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公开(公告)号：US09805457B2
公开(公告)日：2017-10-31
申请号：US15324250
申请日：2014-07-08
发明人： Hirohisa Shibayama , Eiji Shiotani , Satoru Sakurai , Kiyokazu Sugiyama , Akira Shimizu , Daisuke Terada , Yoshitsugu Noshi , Yoshito Utsumi
CPC分类号： G06T7/0004 , B05B9/01 , B05B13/06 , B23Q17/24 , B24B33/02 , G01B11/22 , G01B11/30 , G01N21/88 , G01N21/954 , G01N2021/9548 , G01N2201/10 , G01N2201/12 , G06T7/507 , G06T7/62 , G06T2207/30108 , G06T2207/30148
摘要： Provided is a defect detection device capable of measuring the volume of surface defects. The defect detection device includes: an imaging device configured to image an image of an inspection object; a binarization processing unit configured to subject the image to first and second binarization processing by use of different first and second binarization thresholds, so as to calculate first and second sizes for an identical defect in the image; a ratio calculation unit configured to calculate a first ratio of the second size to the first size; and a depth determination unit configured to determine a depth of the defect depending on the first ratio.
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