air hammer

An air Hammer (Pneumatic Hammer), a type of free forging machine. The compression cylinder compresses the air and sends it into the working cylinder through the distribution valve, pushing the piston and the hammer head to move up and down to achieve the hammering effect. It is flexible to operate and widely used in the production of medium and small-sized forgings.

One type of free forging equipment, the compression cylinder compresses air, which is sent into the working cylinder through the distribution valve, pushing the piston and the hammer head to move up and down to achieve the hammering effect. The operation is flexible. This model is suitable for various free forgings, such as stretching, upsetting, punching, shearing, forging and welding, twisting, bending, etc. Various open die forgings can be carried out with a pad die.

1. Powered by compressed air, it meets the needs of safe production. The striking force and frequency can be controlled by adjusting the air pressure.

2.  The body material is cast iron, and the material of the large-tonnage air hammer anvil is cast steel.

3. The structure is simple and not easy to be damaged

The air hammer is mainly composed of a frame, transmission mechanism, compression cylinder and working cylinder, compression piston, falling part, air distribution mechanism and anvil seat, etc. The frame is the main body of the air hammer. On the frame, an electric motor, transmission device, working mechanism and control mechanism are installed. These mechanisms are compactly combined into a whole on the frame. The transmission mechanism includes a reducer, crankshaft and connecting rod system. It converts the rotational motion of the motor into the up and down reciprocating motion of the compression piston. The upper and lower parts of the compression cylinder and the working cylinder are connected to the upper and lower rotary valves. The up and down movement of the compression piston generates compressed air to drive the up and down movement of the working piston. The falling part is composed of a working piston, a hammer rod and an upper anvil, etc. The hammer rod and the working piston are an integral part. To make its weight meet the technical specifications, it can be made into a hollow part. The connection between the hammer rod and the hammer head is made by dovetail grooves and wedges. The valve train is composed of an upper rotary valve in the upper airway, a lower rotary valve in the lower airway, an operating handle or a foot lever. The valve train is used to control the realization of various actions. The anvil seat is equipped with an anvil pad and a lower anvil. To ensure the stability of forging, the quality of the anvil seat is required to be 12 to 15 times that of the falling part. It is installed on a solid reinforced concrete foundation, with wooden blocks placed in between to eliminate the vibration generated during hammering.

The motor drives the compression piston of the compression cylinder to move up and down through the reduction mechanism, crank and connecting rod, generating compressed air. When the upper and lower air channels of the compression cylinder are connected to the atmosphere, compressed air does not enter the working cylinder, the motor idles, and the hammer head does not work. By controlling the upper and lower rotary valves through the handle or foot pedal, compressed air enters the upper or lower part of the working cylinder, pushing the working piston to move up and down, thereby driving the hammer head and the upper grinding iron to rise or fall, completing various striking actions. There are four connection methods between the rotary valve and the two cylinders, which can generate four actions: lifting the hammer, continuous strike, downward pressure and idle rotation.