INTEGRATED ONLINE MEASUREMENT SYSTEM FOR THERMOPHYSICAL PROPERTY PARAMETERS OF NANOFLUID CUTTING FLUID

    公开(公告)号:US20200072774A1

    公开(公告)日:2020-03-05

    申请号:US16672540

    申请日:2019-11-04

    IPC分类号: G01N25/20

    摘要: The present invention discloses an integrated online measurement system for thermophysical property parameters of nanofluid cutting fluid, consisting of a gas path system, a fluid path system, a nanofluid thermal conductivity measurement device, a measurement device for a convective heat transfer coefficient and a nanofluid/workpiece heat partition ratio of the nanofluid cutting fluid, and a grinding force and grinding temperature measurement device or a milling force and milling temperature measurement device; the nanofluid thermal conductivity measurement device is located in the fluid path system; the gas path system provides pressure for the nanofluid in the fluid path system, two nozzles lead out from the fluid path system, and the nanofluid gas spray ejected by the nozzle I is sprayed onto the surface of a workpiece I to form the measurement device for the nanofluid convective heat transfer coefficient and the nanofluid/workpiece heat partition ratio; and the nanofluid gas spray ejected by the nozzle II is sprayed onto the surface of a workpiece II to form the grinding force and grinding temperature measurement device.

    FIXTURE FOR AUTOMATIC ASSEMBLY, OVERTURNING AND WELDING OF SIDEWALL ALUMINUM PROFILES OF RAIL VEHICLE

    公开(公告)号:US20230046373A1

    公开(公告)日:2023-02-16

    申请号:US17829602

    申请日:2022-06-01

    IPC分类号: B23K37/04

    摘要: Provided a fixture for automatic assembly, overturning and welding of sidewall aluminum profile of rail vehicle, comprising a lifting mechanism, a supporting overturning device mounted on the lifting mechanism, an automatic assembling sidewall profile device mounted on the supporting overturning device, and a self-positioning locking device; the automatic assembling sidewall profile device comprises a sidewall-shaped support steel beam, and a rodless cylinder track platform and a fixing seat mounted on a top end thereof; the self-positioning locking devices are respectively mounted on the rodless cylinder track platform and the fixing seat, comprising a self-positioning base and a locking device; the self-positioning base comprises an outer housing of which the one side is provided with the locking device and inside which are provided with two symmetrically set self-positioning supports, and faces of the two self-positioning supports matching with the rail vehicle aluminum profile are provide with rollers formed a V-shaped crack.