Sökning: "nut-runner"

Hittade 4 uppsatser innehållade ordet nut-runner.

  1. 1. Planetary Gear Analysis : deformation induced misalignment and optimization

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Martin Jonsson; [2020]
    Nyckelord :FEM; gears; KISSsoft; misalignment; planetary gears; FEM; KISSsoft; kugghjul; planetväxlar; vinkelfel;

    Sammanfattning : A handheld heavy-duty nut runner, commonly used to assemble windmills and oil pipe lines, and capable of producing 4100 Nm of torque, experiences low cycle fatigue and usually fails after 20 000 cycles at the specified torque. A full assembly Finite element model of the last stage of the four-stage planetary gearbox is constructed and simulated over one complete load cycle. LÄS MER

  3. 2. Development of a new rotational angle selector attachment for tightening tools

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Moinak Banerjee; Sanket Kulkarni; [2019]
    Nyckelord :Product development; angle selector; torque; nut-runner; optimisation; Produktutveckling; vinkelväljare; vridmoment; mutterdragare; optimering;

    Sammanfattning : The design solution for angle selector attachment is developed and carry forward based on initial case study done by KTH Södertäjle students. This project is carried out to find the answers for few questions viz. potential concept design solution, considering the requirements given by Scania that needs to be fulfilled. LÄS MER

  4. 3. Magnet Losses in Inverter-fed High-speed PM Machines

    Master-uppsats, KTH/Elektrisk energiomvandling

    Författare :Adolfo Garcia Gonzalez; [2015]
    Nyckelord :Eddy currents; FEM 2D; FEM 3D; magnet losses; nut-runner; PM motor; slot-less winding; Virvelstrommar; FEM 2D; FEM 3D; forluster i magneter; mutterdragare; permanentmagnetiserad motor; luftlindad lindning;

    Sammanfattning : This master thesis deals with the estimation of magnet losses in a Permanent Magnet(PM) motor inserted in a nut-runner. This type of machine has interesting featuressuch as being slot-less and running at a very high speed (30000 rpm). LÄS MER

  5. 4. Harmonic Losses in Windings of Inverter-Fed High-Speed PM Motors

    Master-uppsats, KTH/Elektrisk energiomvandling

    Författare :Yang Yang; [2015]
    Nyckelord :Bundle; conductor; FEM 2D; losses; PM motor; skin and proximity eect; transposition; windings;

    Sammanfattning : This master thesis focuses on the estimation of losses in windings of a high-speed PermanentMagnet (PM) motor. The PM motor studied in this thesis is applied to a nut-runner systemwith specic characteristics such as operating at a high speed (30000 rpm), relatively smallsize and being slot-less. LÄS MER