1 Introduction
2 Overview of the state of the art
2.1 Scuffing
2.2 Scuffing load capacity of spur, helical, bevel and hypoid gears
2.3 Temperature calculation of worm gears
2.4 Conclusion from the state of the art and problem formulation
3 Approach to develop a scuffing load capacity calculation of worm gears
4 Temperature simulation of worm gears
4.1 Geometry and boundary conditions
4.2 Solution of the model
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three-dimensional heat conduction
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three-dimensional convection (movement of the bodies relative to the contact area)
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transient course of the contact line.
4.3 Results of the temperature simulation
5 Contact temperature calculation
5.1 Regression analysis
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operating conditions (torque and rotational speed)(\(n_{1}=100\ldots 4000\,\textit{revolutions}/min\), \(T_{2}=100\ldots 1500\,Nm\))
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sizes(\(a=65\ldots 160\,mm\))
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contact pattern ratios and contact pattern positions(\(R_{Tr}=25\ldots 100\%\))
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materials(wheel: EN-GJS-600‑3 & CuSn12Ni2, worm: 42CrMo4 & 16MnCr5)
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oil and bulk temperatures(\(\vartheta _{\mathrm{Oil}}=60\ldots 120^{\circ}C\), \(\vartheta _{M}=60\ldots 140^{\circ}C\)).
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sliding velocity at reference diameter
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mean Hertzian contact stress
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mean tooth coefficient of friction.