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冷轧管机虽然已应用多年,但仍然存在着许多不足之处,如: 主曲轴通常还是采用滑动轴承。目前,在这种轧机上已不再使用这种轴承; 传动装置与机架之间由于没有防油密封,结果润滑油与冷却油彼此混杂; 入口与出口卡盘的传动机构复杂,维护费用高;同时,每个往复行程管坯完成两次旋转比较困难; 由于需要很深的基础,安装费用高; 由于不易接近工具,而且不可能有两人以上同时进行工作,故更换工具时需要很长的轧机停车时间。在对现有冷轧管机工作原理进行鉴定的基础上,DMS轧机拟采用:
Although the cold rolling mill has been used for many years, there are still many shortcomings, such as: the main crankshaft is usually used in sliding bearings. Currently, this type of bearing is no longer used on this type of rolling mill; there is no oil-tight seal between the transmission and the frame, resulting in a mixture of lubricating oil and cooling oil; complex transmission mechanisms for the inlet and outlet chucks and high maintenance costs ; At the same time, it is difficult to complete two rotations per reciprocating stroke tube; due to the need for a deep foundation, high installation costs; the replacement of tools takes a long time due to inaccessibility of tools and the possibility of two or more people working at the same time Mill parking time. Based on the identification of the working principle of the existing cold rolling mill, the DMS mill intends to adopt: