| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.13 ( September 1985 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development of a High Strength Mill Spindle and Its Strength Evaluation Noriaki Inoue, Sadanori Nakano, Noboru Kawauchi, Kazuaki Hamada, Tadashi Naito |
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Synopsis : No conspicuous progress has been made in spindles for rolling mill drives, and rolling torque loaded to the spindles has been greatly increased in recent years on account of very severe operating conditions. As a result, a lot of spindle yokes have cracked at the slipper metal groove and the trouble has caused serious damage to production. In our research, the stress analysis of the spindle head and roll coupling was made, and stress concentration of the spindle yoke became clear, and through the analysis, a new type spindle which could reduce stress concentration was designed. It was confirmed that by the brittle lacquer coating test and stress measurement the new type spindle had double strength than that so the original. An experimental equation for estimating maximum stress loaded to the spindle was conducted and a diagram which showed the strength balance of spindle yoke and roll coupling was made out. |
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