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    Cutting blade tips
    11.
    发明授权
    Cutting blade tips 有权

    公开(公告)号：US11066937B2

    公开(公告)日：2021-07-20

    申请号：US16825610

    申请日：2020-03-20

    Applicant: United Technologies Corporation

    Inventor： Changsheng Guo ,  Christopher W. Strock

    IPC: F01D5/20 ,  F01D11/12

    Abstract: An integrally bladed rotor, including: a plurality of blades integrally formed with a hub as a single component, each of the plurality of blades having a blade body extending from the hub to an opposed blade tip surface along a longitudinal axis, wherein the blade body defines a pressure side and a suction side, and wherein the blade body includes a cutting edge defined between the blade tip surface of the blade body and the pressure side of the blade body, wherein the cutting edge is configured to abrade a seal section of an engine case. A method for manufacturing an integrally bladed rotor includes: forming a plurality of airfoils integrally with a hub to form a single component, each of the plurality of airfoils having an opposed tip surface with respect to the hub extending along a longitudinal axis, wherein each of the plurality of airfoils defines a pressure side and a suction side; and forming a cutting edge between the tip surface and the pressure side of each of the plurality of airfoils, wherein the cutting edge is configured to abrade a seal section of an engine case.

    Face seal with insert
    12.
    发明授权
    Face seal with insert 有权

    公开(公告)号：US10969017B2

    公开(公告)日：2021-04-06

    申请号：US16373165

    申请日：2019-04-02

    Applicant: United Technologies Corporation

    Inventor： Changsheng Guo ,  Zaffir A. Chaudhry ,  Nasr A. Shuaib

    IPC: F16J15/34 ,  F01D11/00 ,  F01D21/00 ,  F16N29/04

    Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.

    FACE SEAL WITH INSERT
    13.
    发明申请
    FACE SEAL WITH INSERT 审中-公开

    公开(公告)号：US20200318740A1

    公开(公告)日：2020-10-08

    申请号：US16373165

    申请日：2019-04-02

    Applicant: United Technologies Corporation

    Inventor： Changsheng Guo ,  Zaffir A. Chaudhry ,  Nasr A. Shuaib

    IPC: F16J15/34 ,  F16N29/04 ,  F01D21/00

    Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.

    Cooling system for rotating cutting tools
    14.
    发明授权
    Cooling system for rotating cutting tools 有权

    公开(公告)号：US10786853B2

    公开(公告)日：2020-09-29

    申请号：US16021894

    申请日：2018-06-28

    Applicant: United Technologies Corporation

    Inventor： Zhigang Wang ,  Changsheng Guo

    IPC: B23C5/28 ,  B23Q11/10

    Abstract: A rotary tool includes a shank, cutting portion, coolant inlet, coolant outlet, and channel system. The cutting portion is connected to and extends from the shank. The cutting portion includes a cutting edge. The coolant inlet and the coolant outlet are disposed in the shank. The channel system is contained in the rotary tool and is a closed circulation loop system such that the coolant is contained within the channel system as the coolant is circulated within the rotary tool. The channel system includes a delivery path and a return path. The delivery path is fluidly connected to the coolant inlet and includes a shape corresponding to a shape of the cutting edge. The return path is fluidly connected to the coolant outlet and to the delivery path at a location in the cutting portion of the rotary tool.

    Cutting blade tips
    15.
    发明授权
    Cutting blade tips 有权

    公开(公告)号：US10711622B2

    公开(公告)日：2020-07-14

    申请号：US15943431

    申请日：2018-04-02

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Changsheng Guo ,  Christopher W. Strock

    IPC: F01D5/20 ,  F01D11/12

    Abstract: A blade includes a blade body extending from a blade root to an opposed blade tip surface along a longitudinal axis. The blade body defines a pressure side and a suction side. The blade body includes a cutting edge defined where the tip surface of the blade body meets the pressure side of the blade body. The cutting edge is configured to abrade a seal section of an engine case. A method for manufacturing a blade includes forming an airfoil with a root and an opposed tip surface along a longitudinal axis, wherein the airfoil defines a pressure side and a suction side. The method also includes forming a cutting edge where the tip surface of the airfoil meets the pressure side of the airfoil.

    METHOD AND APPARATUS FOR MACHINING PARTS WITH VARIABLE STIFFNESS
    16.
    发明申请
    METHOD AND APPARATUS FOR MACHINING PARTS WITH VARIABLE STIFFNESS 审中-公开

    公开(公告)号：US20200206851A1

    公开(公告)日：2020-07-02

    申请号：US16238167

    申请日：2019-01-02

    Applicant: United Technologies Corporation

    Inventor： Changsheng Guo ,  Zhigang Wang ,  Eric Fromerth

    IPC: B23P15/02 ,  B23C3/18

    Abstract: A method and apparatus for machining parts with variable stiffness includes determining, by a controller, a chatter-lobe plot of a cutter assembly. A preliminary tool path is developed by the controller. Virtual machining of a blank part using the preliminary tool path is performed by the controller. A chatter-lobe plot of the virtually machined part is determined by the controller. A dynamic chatter-lobe plot using the chatter-lobe plot of the cutting tool assembly and the chatter-lobe plot of the virtually machined part is determined by the controller. A chatter-free rotational speed of the cutting tool from the dynamic chatter-lobe plot is determined by the controller. A machining apparatus, controlled by the controller, uses the determined chatter-free rotational speed of the cutting tool to machine a blank part.

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