Operation Gap Adjustments Research For Tube Blank Top Tray Of LD-120 Five-High Tube Cold Rolling Mill

The main drive actuating parts of LD-120 five-high tube cold rolling mills include the main motor, belt driving system, rotary feed-in case, intermediate bed and main driving system. Power from the main drive is transferred to the finishing rod and lead screw drive actuator through the rotary feed-in case. The tube to be rolled is sent to the main drive end through the tube blank top tray for rolling. The gap between the tube blank top tray and intermediate bed slider face influences the tube forming quality greatly. The paper has introduced the working principle of the LD-120 five-high tube cold rolling mill and the performance of its main parts, and has analyzed the affective factors and adjustment method of the gap among the moveable bracket, intermediate bed slider face and top tray of tube blank, and has solved the gap adjustment problem through calculation.