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公开(公告)号：US11247281B2
公开(公告)日：2022-02-15
申请号：US16756425
申请日：2019-07-15
申请人： LG CHEM, LTD.
发明人： Jong Hyuk Park
摘要： An anchor bolt machining apparatus including an anchor bolt machining die and a die holder. The anchor bolt machining die includes a first head portion for fixing an anchor bolt and a first body portion receiving a screw machining die and the die holder includes a second head portion coupled to a rotational force supply device, a support portion coupled to the anchor bolt machining die, and a second body portion connecting the second head portion and the support portion.
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公开(公告)号：US10598207B2
公开(公告)日：2020-03-24
申请号：US15659993
申请日：2017-07-26
发明人： Gunther Hartmann , Horst Dieterle
摘要： A high-strength screw (2) includes a threaded portion (7) having a thread (8). The screw (2) includes an inner core (16) as seen in cross-section of the screw (2), the core (16) having a first hardness. The screw (2) includes an outer surface layer (17) as seen in cross-section of the screw (2). The screw (2) includes an unhardening layer (18) forming the outer surface layer (17) in the threaded portion (7), the unhardening layer (18) having a second hardness being reduced compared to the first hardness of the core (16).
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公开(公告)号：US10580593B2
公开(公告)日：2020-03-03
申请号：US15119997
申请日：2015-03-16
发明人： Mariusz Skóra , Boguslaw Buszta , Dariusz Kluz
摘要： A screw includes a barrel-shaped central pin is surrounded by a cylindrical bore having a conical bottom The cylindrical insert is seated in the cylindrical bore. The top surface of the central pin is lowered below the top surface of the head. The walls of the pin (4) are convex towards the insert. Manufacturing the screw includes producing the threaded part with the head with the cylindrical recess with the cone-shaped bottom. The cylindrical insert terminates at one end with a bevel with an inclination angle of α=10-30°. The insert is introduced into the cylindrical recess. The upper part of the insert protruding from head of the screw is pre-shaped. The pin is upset using an appropriate tool and simultaneously the top surface of the pin is lowered below the top surface of the head.
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公开(公告)号：US10520002B2
公开(公告)日：2019-12-31
申请号：US15671513
申请日：2017-08-08
申请人： The Boeing Company
摘要： A barrel nut with features for reducing tensile stresses under heavy load within the barrel nut has a partial-cylindrical body having a first planar end surface and a second planar end surface. A threaded bore extends through the partial-cylindrical body with a central axis substantially parallel to the first planar end surface and the second planar end surface. At least one groove is formed in each of the first planar end surface and the second planar end surface, the groove having a rounded surface extending at least a part of a distance between a curved upper surface of the partial-cylindrical body to a bottom surface thereof in a direction substantially parallel to the central axis of the threaded bore.
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公开(公告)号：US20190143418A1
公开(公告)日：2019-05-16
申请号：US16185171
申请日：2018-11-09
发明人： Cheng-Wei Su
摘要： A rotary cutter for cutting damaged threads of a bolt includes a body rotatable about a rotating axis and having a connecting end and an operative end. A first cutting blade is disposed on an inner periphery of the body facing a cutting space extending along the rotating axis from the operative end towards but spaced from the connecting end. The body further includes a virtual projection plane perpendicular to the rotating axis. A first virtual plane passes through the first cutting blade and extends perpendicularly to the virtual projection plane. A virtual circle and a first virtual reference line are located on the virtual projection plane. The first virtual reference line intersects the rotating axis and passes through an intersection of the first virtual plane and the virtual circle. An angle between the first virtual reference line and the first virtual plane is between 5° and 40°.
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公开(公告)号：US20190060979A1
公开(公告)日：2019-02-28
申请号：US16173923
申请日：2018-10-29
发明人： Rakesh Singh , Ke Ken Li , Michael Hui Du , Fei Song , Stephen Ray Stafford , Anthony Louis Williams Collins , Keith Moriarty , Doyle Brinegar
摘要： A device for cold rolling a thread on a tubular support member of a rotary shouldered thread connection includes obtaining an original root depth of a thread root, cold rolling the thread until a minimum increased root depth tolerance is achieved.
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公开(公告)号：US09987697B1
公开(公告)日：2018-06-05
申请号：US15041603
申请日：2016-02-11
摘要： A one piece hand tool is provided for cleaning and chasing water faucet threads. The hand tool has an engagement end and an operating end spaced along a central tool axis. Intermediate the engagement end and operating end, an external surface is provided with an overall hexagonal configuration. The engagement end is open for accessing an internal threaded surface for engagement with water faucet threads to be cleaned. Four equally spaced vertical grooves parallel with the central tool axis are provided in the internal threaded surface of the hand tool and disrupt the internal threaded surface to contain debris during operation of the tool. The internal threaded surface has sharp leading and trailing edges for cleaning and chasing the water faucet threads during engagement and disengagement with the hand tool.
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公开(公告)号：US20180056472A1
公开(公告)日：2018-03-01
申请号：US15681471
申请日：2017-08-21
申请人： SANSHIN CO., LTD.
发明人： Nobukazu HOSOKAI , Takayuki ADACHI
CPC分类号： B24B21/16 , B23G1/36 , B23G9/004 , B24B19/022 , B24B21/004 , B24B29/02 , F16H25/2204 , F16H25/24 , F16H2025/2481
摘要： The invention has a turnback roll which can transfer and guide a polishing tap in a tangential direction of a pressure contacting roll, a vertical oscillation mechanism which linearly oscillates the pressure contacting roll in a tangential direction of a ball groove while being orthogonal to a rotating axis line, and a horizontal oscillation mechanism which linearly oscillates the pressure contacting roll in a direction of a rotating axis line toward both inner side surfaces of the ball groove. The ball groove can be securely polished by the polishing tape on the basis of the continuous or intermittent transfer of the polishing tape and the linear oscillating motion of the ball groove. It is possible to improve a polishing precision, it is possible to improve a surface roughness of the ball groove and it is possible to improve a polishing workability of the ball groove.
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公开(公告)号：US20180050383A1
公开(公告)日：2018-02-22
申请号：US15501368
申请日：2016-01-28
发明人： Michihiro KAMEDA , Masaaki INOUE
摘要： A method of machining a screw is provided that is capable of preventing formation of a protruding section at a thread tip section. A thread is formed by cutting on a cylindrical body, and a surface of the thread is plastically deformed by rolling. Because of the cutting, a width between-side surfaces of a thread tip section is in a narrowed state as compared to a normal width. This width is narrowed toward a tip of the thread while a thread body section has a width expanded as compared to a normal width. Consequently, the side surfaces are formed to bulge by an excess thickness portion as compared to normal side surfaces. The rolling plastically deforms both side surfaces to cause the excess thickness portion to plastically flow toward the side surfaces.
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公开(公告)号：US20170291240A1
公开(公告)日：2017-10-12
申请号：US15190234
申请日：2016-06-23
申请人： Cheng-Wei Su
发明人： Cheng-Wei Su
IPC分类号： B23G9/00
CPC分类号： B23G9/003 , B23B5/167 , B23G2240/08 , Y10T408/893 , Y10T408/899
摘要： A cutting tool includes a body including a connecting end, a cutting end which includes a space for receiving the work piece, at least one projection with a ridge defining at least one cutting edge for cutting the work piece, and at least one slot for allowing pieces trimmed from the workpiece to exit from the body. The space has a top and a bottom and tapers outwardly from the top to the bottom. The at least one cutting edge has a first end adjacent to the top of the space and a second end adjacent to the bottom of the space and extends from the first end to the second end obliquely. The body is rotatable about a first axis, and the first axis extends longitudinally between the first and second ends of the body.
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