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| Discussion on Maintenance and Modification Processes for the Rocker Arm Devices of the TRM53.4 Vertical Roller Mill |
| LIU Guanghui, ZHOU Jian, YANG Jie, LI Xinke
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| CNBM Equipment Group， China National Building Materials (Xuzhou) Heavy Machinery Co., Ltd. , Xuzhou Jiangsu 221131, China |
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Abstract To address the damage of key components in the rocker arm devices of TRM53.4 vertical roller mill during maintenance, a modular repair method utilizing similar semi-finished rocker arms was developed. This method focuses on redesigning and inlay welding critical parts including the roller ear plate and sealing frame’s locating flange. CNC programming enables efficient rough machining of structural elements such as locating flanges and roller shaft holes. By optimizing cutting parameters and tool paths during processing, the method significantly reduces processing cycles for large critical components while maintaining repair quality, effectively meeting clients' urgent maintenance schedule demands. Practical validation confirms the strong feasibility of this integrated modular repair and efficient rough machining process. This solution not only reduces maintenance costs but also enhances repair efficiency, providing a reliable emergency repair solution for vertical roller mill rocker arms.
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Received: 02 August 2025
Published: 25 January 2026
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