500 tons of metal formingfour-column hydraulic pressWhen driving the working parts to move, due to the large mass of the moving parts and the high movement speed, when reaching the end of the stroke, hydraulic shock will occur, and even mechanical collision between the piston and the cylinder end cover. In order to prevent this phenomenon, a buffer device is provided at the end of the stroke. Several buffer structures are introduced.
When the buffer column race at the piston end of the 500-ton metal forming four-column hydraulic press moves into the cylindrical oil chamber in the direction of the end cover, the oil enclosed between the column race and the end cover is squeezed out from the annular gap. Since the gap is very small, it acts as a throttling buffer. It is suitable for hydraulic system with little motion inertia and low motion speed.