The anti-vibration method of the forging machine, from the perspective of process operation, die forging and open forging are different. During die forging, even if there is a considerable displacement of the bed (usually, the forging amount is about 30mm, and the elongated side is about 15mm), due to the large ratio of the anvil hammer, there is no impact on the forging ability and operation performance. Therefore, for spring systems with lower natural frequencies, good vibration protection can be obtained even without an inertia base due to the large displacement of the bed.
In the case of free forging, the anvil split type is compared to the anvil integral type. Usually the anvil hammer ratio is smaller. At this time, in order to increase the performance of the anvil hammer ratio and reduce the displacement of the bed, the inertia base is generally adopted.
In addition, in freeforging, the workpiece is sometimes hammered repeatedly at the end of the anvil. In this case, for spring systems with low anvil weight and low natural frequency, the anvil itself will tilt and the parallelism between the anvil and the end of the satin hammer will also be lost. This will reduce the forging capacity of the performance, so it is sometimes necessary to install a large inertia base and the forging hammer itself is mounted on the inertia base at the same time. There are many types of anti-vibration devices that have been put into use, and one of them is the anti-vibration device called the floating base, as shown in Figure 3 below, which uses the buoyancy of water and the elastic support of air to support machinery.
As a result, the forging machine is mounted on a bench with a cavity in the lower part, which is open downward, and the entire bed floats in a sink that is located on the floor. Therefore, the water pressure generated due to the head difference between the inside and outside of the cavity passes through the air layer inside the cavity and acts on the bottom of the bench. As a result, the bench will be subjected to an upward buoyancy equal to its displacement. When forming an inertial base and having an excitation force, the bench can move freely up and down. The guide rollers control the tilt and rotation, while the stacked leaf springs act as auxiliary buoyancy.