The punching machine for strip steel should be determined according to the process property, batch size, geometric size and precision of the workpiece to be completed. Of course, it should be determined according to the actual situation of the site, which can not be generalized. To prevent the steel punching machine from striking eccentricity, pay attention to the following points: < br style = "list style type: none; "/ > 1. Frequently adjust the gap between the guide post and guide sleeve of the guide rail, slide block and die of the strip punching machine to prevent eccentric strike. < br style =" list style type: none; "/ > 2. In addition to adjusting the gap between the upper and lower blades, the shearing machine should also pay attention to the use of the pressing plate, This can avoid the tool edge cracking due to rebound and dislocation in the cutting process. < br style = "list style type: none;" / > 3. During blanking, positioning devices should be used as much as possible: positioning panel, punching positioning cover plate, etc., to reduce the possibility of eccentric blanking. < br style = "list style type: none;" / > 4. The table size of punching machine for strip steel should be larger than the plane size of die, 5. The width of the lower anvil and the size of the anvil should be matched, and the length of the anvil should be slightly larger than that of the anvil. The dovetail contact surface of the forging die should match the tonnage of the equipment, and the contact surface must be kept clean and free of impurities