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公开(公告)号：US09746302B2
公开(公告)日：2017-08-29
申请号：US14928209
申请日：2015-10-30
Applicant: MITUTOYO CORPORATION
Inventor： Kotaro Hirano , Ryousuke Watanabe , Hisayoshi Sakai
CPC classification number: G01B5/0002 , G01B5/008 , G01B5/201
Abstract: A method of placing a work piece on a measuring device in which a work piece is placed on a table of a measuring device is provided. The method includes: using a retainer capable of holding the work piece above the table and a lifting/lowering device lifting and lowering a top surface of the table; holding the work piece above the table with the retainer; lifting the top surface of the table with the lifting/lowering device to bring the top surface of the table into contact with a bottom surface of the work piece; and, after a load of the work piece is borne by the table, releasing the hold of the retainer on the work piece.
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公开(公告)号：US11333619B2
公开(公告)日：2022-05-17
申请号：US17011411
申请日：2020-09-03
Applicant: MITUTOYO CORPORATION
Inventor： Seiji Sasaki , Nobuyuki Nakazawa , Hisayoshi Sakai , Masato Kon , Hidemitsu Asano
IPC: G01N23/00 , G01N23/046 , G06T7/00
Abstract: A measurement X-ray CT apparatus calibrates a geometrical positional relationship between a focus of an X-ray source, an X-ray detector, and a rotation center of a rotating table in advance. The measurement X-ray CT apparatus then obtains projection images by irradiating the object to be measured with X-rays to perform a CT scan, and generates a three-dimensional image of the object to be measured by CT reconstruction of the projection images. The measurement X-ray CT apparatus further includes a reference frame that is made of a material and has a structure less susceptible to environmental changes, and sensors that are located on the reference frame and intended to successively obtain calibration values of the geometrical positional relationship between the focus of the X-ray source and the X-ray detector during the CT scan. The calibration values are used as parameters of the CT reconstruction.
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公开(公告)号：US10197375B2
公开(公告)日：2019-02-05
申请号：US15427576
申请日：2017-02-08
Applicant: MITUTOYO CORPORATION
Inventor： Hisayoshi Sakai
Abstract: A probe head of a three-dimensional coordinate measuring device according to an embodiment of the present invention includes a measurer, a first and second diaphragm, a first oscillator, and a second oscillator. The measurer extends in a first direction. The first and second diaphragms are provided at two different positions on the measurer, at a first position and a second position, respectively, and support the measurer such that the measurer is capable of displacement in a first direction. The first oscillator causes the measurer to oscillate along the first direction. The second oscillator causes a predetermined portion of the measurer between the first and second diaphragms to oscillate along each of a second direction orthogonal to the first direction, and a third direction orthogonal to both the first and second directions.
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公开(公告)号：US20240063680A1
公开(公告)日：2024-02-22
申请号：US18365320
申请日：2023-08-04
Applicant: Mitutoyo Corporation
Inventor： Hisayoshi Sakai , Tsutomu Ugajin
CPC classification number: H02K5/10 , F16C17/045 , F16C33/748 , H02K2205/03
Abstract: A dustproof seal structure includes a rotor assembly and a stator assembly rotatably supporting the rotor assembly. The stator assembly forms a horizontal thrust aerostatic bearing between a lower surface of the thrust plate and an upper surface of the stator assembly when compressed air is supplied between the lower surface of the thrust plate and the upper surface of the stator assembly. The thrust plate and the stator assembly form a sealing portion through which the compressed air flows. The sealing portion includes an inclined flow path whose height increases from an outer peripheral surface of the thrust plate toward the inside in a radial direction.
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公开(公告)号：US10962053B2
公开(公告)日：2021-03-30
申请号：US16671479
申请日：2019-11-01
Applicant: Mitutoyo Corporation
Inventor： Hisayoshi Sakai , Kenji Ueda
Abstract: An air bearing includes: a main body part having a bearing surface facing a guide surface; a flow path part provided in the main body part; an air film forming part that supplies compressed air flowing through the flow path part to the guide surface to form an air film; a negative pressure generating part that sucks air between the bearing surface and the guide surface, the negative pressure generating part being provided in the flow path part; a discharge path in communication with the flow path part; and a flow rate adjusting part that adjusts a flow rate of air flowing from the flow path part to the discharge path in accordance with a compressed air pressure corresponding to a load applied to the main body part.
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Patent Agency Ranking
公开(公告)号：US10119565B2
公开(公告)日：2018-11-06
申请号：US15464552
申请日：2017-03-21
Applicant: Mitutoyo Corporation
Inventor： Kenji Ueda , Hisayoshi Sakai
Abstract: The air bearing includes a main body part having a bearing surface opposed to a guide face, first and second flow path parts, which are provided in the main body part, for allowing compressed air supplied from outside to flow, an air supply hole, which is provided in the flow path part, for supplying compressed air to the guide face to form an air film between the bearing surface and the guide face, and a negative pressure generating part, which is provided in the second flow path part intersecting with the first flow path part, for generating a negative pressure for sucking air between the guide face and the main body part by increasing the flow velocity of the compressed air.
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公开(公告)号：US20170284462A1
公开(公告)日：2017-10-05
申请号：US15464552
申请日：2017-03-21
Applicant: Mitutoyo Corporation
Inventor： Kenji Ueda , Hisayoshi Sakai
CPC classification number: F16C29/025 , F16C32/0622 , F16C32/0625 , F16C2240/44 , F16C2370/00 , G01B5/0009 , G01B21/047
Abstract: The air bearing includes a main body part having a bearing surface opposed to a guide face, first and second flow path parts, which are provided in the main body part, for allowing compressed air supplied from outside to flow, an air supply hole, which is provided in the flow path part, for supplying compressed air to the guide face to form an air film between the bearing surface and the guide face, and a negative pressure generating part, which is provided in the second flow path part intersecting with the first flow path part, for generating a negative pressure for sucking air between the guide face and the main body part by increasing the flow velocity of the compressed air.
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公开(公告)号：US20140342840A1
公开(公告)日：2014-11-20
申请号：US14275931
申请日：2014-05-13
Applicant: MITUTOYO CORPORATION
Inventor： Hisayoshi Sakai
IPC: F16D3/82
CPC classification number: F16D3/82 , F16C32/0603 , F16D3/02 , F16D3/80
Abstract: A rotation transmitter includes: a first member, an intermediate member and a second member that are arranged coaxially with a rotation axis. The first member is formed with a first bearing surface along the rotation axis and a first direction. The second member is formed with a second bearing surface along the rotation axis and a second direction. The intermediate member is formed with a first middle bearing surface facing the first bearing surface and formed with a second middle bearing surface facing the second bearing surface. A static-pressure air bearing is formed between the bearing surface and the middle bearing surface. The rotation transmitter further includes: a preload device that biases the bearing surface and the middle bearing surface in a direction approaching each other.
Abstract translation: 旋转变送器包括：与旋转轴同轴布置的第一构件，中间构件和第二构件。 第一构件沿着旋转轴线和第一方向形成有第一支承面。 第二构件沿旋转轴线和第二方向形成有第二支承面。 中间构件形成有面向第一支承面的第一中间承载面，并形成有面向第二支承面的第二中间承载面。 在轴承表面和中间承载面之间形成静压空气轴承。 旋转变送器还包括：预紧装置，其使轴承表面和中间承载面朝向彼此接近的方向偏压。
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公开(公告)号：US20200149587A1
公开(公告)日：2020-05-14
申请号：US16671479
申请日：2019-11-01
Applicant: Mitutoyo Corporation
Inventor： Hisayoshi Sakai , Kenji Ueda
IPC: F16C32/06
Abstract: An air bearing includes: a main body part having a bearing surface facing a guide surface; a flow path part provided in the main body part; an air film forming part that supplies compressed air flowing through the flow path part to the guide surface to form an air film; a negative pressure generating part that sucks air between the bearing surface and the guide surface, the negative pressure generating part being provided in the flow path part; a discharge path in communication with the flow path part; and a flow rate adjusting part that adjusts a flow rate of air flowing from the flow path part to the discharge path in accordance with a compressed air pressure corresponding to a load applied to the main body part.
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公开(公告)号：US09316472B2
公开(公告)日：2016-04-19
申请号：US14471631
申请日：2014-08-28
Applicant: MITUTOYO CORPORATION
Inventor： Hisayoshi Sakai
CPC classification number: G01B3/20 , F16C29/002 , F16C29/005 , F16C29/02 , F16C29/025 , F16C29/123 , F16C32/0614 , F16C32/0666 , F16C2370/00
Abstract: A slide guide device includes: a guide body having a reference guide surface and a sub guide surface that are parallel to each other; a slider having a reference slide pad adapted to slide on the reference guide surface and a sub slide pad adapted to slide on the sub guide surface, the slider being adapted to be driven by a drive unit to move along the guide body. The sub slide pad includes a slide surface (sub slide surface) slidable on the sub guide surface and an air pocket that receives a load in a manner non-contact with the sub guide surface.
Abstract translation: 滑动引导装置包括：引导体，其具有彼此平行的基准引导表面和子引导表面; 具有适于在所述基准引导表面上滑动的参考滑动垫的滑块和适于在所述辅助导向表面上滑动的副滑动垫，所述滑块适于由驱动单元驱动以沿着所述引导体移动。 副滑块包括可在副导向面上滑动的滑动面（副滑动面）和以与副导向面不接触的方式接受负载的气穴。
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