Estimation of Impact Input Torque in Rolling Mill Drive System when Material enters the rolls

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概要

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• The drive shaft system of a 'steel rolling mill usually vibrates torsionally when a material gets into the rolls. In designing a drive system, it is necessary to grasp the magnitude of transient torque. TAF (Torque Amplification Factor = maximum torque/steady-state torque) is usually applied for this purpose but it occasionally varies with each rolling process. This statistical TAF may depend on variable impact input torque. This paper proposes the following three functions with the parament β to describe the statistical input torque.1-exp(ω_1t/β) β<0 u(t) β=0 u(t)+βδ(t)/ω_1 β>0 where u(t) : unit step function, δ(t) : delta function, ω_1 : natural frequency of shaft. β may be determined based on the measurement in site and TAF is theoretically estimated from β and the above three functions. According to the measurement of a practical hot strip mill system, mean and standard deviations of β are 0.79〜0.86,and 0.89〜1.04,respectively.

• 一般社団法人日本機械学会の論文

著者

• Matsukura Yoshitaka

  Central Research Laboratory Mitsubishi Electric Co.

• TAKESHITA Mitsuo

  Central Research Laboratory, Mitsubishi Electric Co.

• ISHII Akira

  Central Research Laboratory, Mitsubishi Electric Co.

• Takeshita Mitsuo

  Central Research Laboratory Mitsubishi Electric Co.

• Ishii Akira

  Central Research Laboratory Mitsubishi Electric Co.

関連論文

• Estimation of the Distributing Cross Sectional Asymmetry along the Rotor Axis
• Analysis of Lateral Vibration Characteristics of Rotating Shafts with Flexible and Axi-asymmetric Bearings
• Estimation of Impact Input Torque in Rolling Mill Drive System when Material enters the rolls

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