High-speed air-actuated hammer-forging device

Abstract

The invention discloses a high-speed pneumatic forging hammer device, and belongs to forging and pressing equipment. The device structurally comprises a compressor, an air storage tank, a buffering air bag, a forging hammer and an inflator, wherein an air outlet of the buffering air bag is communicated with an air inlet of the compressor through an air delivery pipe, an air outlet of the compressor is communicated with an air inlet of the air storage tank through the air delivery pipe, an air outlet of the air storage tank is communicated with the forging hammer through the air delivery pipe, and the forging hammer is communicated with the air inlet of the buffering air bag through the air delivery pipe; the inflator is communicated with the air inlet of the buffering air bag through the air delivery pipe, and the air delivery pipe between the inflator and the air inlet of the buffering air bag is provided with an air supply valve; and the inflator is a small-sized molecular sieve type nitrogen making machine or a small-sized air dryer. The high-speed pneumatic forging hammer device adopts a closed-loop pipeline, is completely isolated with outside air, and avoids invasion of outside humid air, so as to solve the problem that a large-caliber pneumatic piston is frosted and blocked.

Description

technical field [0001] The invention relates to a forging equipment, in particular to a high-speed pneumatic forging hammer device. Background technique [0002] At present, the forgings of automobiles, diesel engines, tanks, heavy vehicles, and heavy machinery are all produced by steam hammers or hydraulic hammers, and heavy presses. Among them, the liquid air hammer must increase the volume of the lower chamber because the lifting speed of the hammer is too slow. When the cylinder diameter cannot be increased, the diameter of the hammer shaft can only be reduced; because of the above, when forging irregular size forgings, the hammer head A very strong torsional moment will be generated in an instant, and the thinned hammer shaft is easy to bend and twist; in order to eliminate the influence of the hammer head on the hammer shaft, the hammer head and the hammer shaft are connected by a ball head. The advantages of rigidity and precision of the forging hammer are gone, and ...

AI Technical Summary

Problems solved by technology

Among them, the liquid air hammer must increase the volume of the lower chamber because the lifting speed of the hammer is too slow. When the cylinder diameter cannot be increased, the diameter of the hammer shaft can only be reduced; because of the above, when forging irregular size forgings, the hammer head A very strong torsional moment will be generated in an instant, and the thinned hammer shaft is easy to bend and twist; in order to eliminate the influence of the hammer head on the hammer shaft, the hammer head and the hammer shaft are connected by a ball head. The advantages of rigidity and precision of the forging hammer are gone, and the forgings are prone to misalignment, deviation, deformation, etc., which is very troublesome to shape, high in cost, and prone to accidents such as broken rods; In the lower forging stroke, the high-pressure oil in the lower chamber is extruded at high speed, which produces an obvious damping effect. It seems that it is not much faster than the punching machine, and the forging ability is low; when the piston ring is aligned, the hydraulic oil in the lower chamber escapes into the upper The air chamber of the cylinder will cause liquid shock, and the head of the cylinder will fly, causing a vicious accident that breaks through the roof of the workshop, which is very dangerous

The steam hammer needs to be equipped with large and medium-sized steam boilers, which not only consume water and coal, but also cause serious soot pollution; if the steam hammer is driven by ordinary compressed air, the water in the compressed air will be cooled and precipitated during the forging expansion, and frost will form. The piston is stuck by frost and cannot be used

Heavy-duty presses are expensive, and there is no forging force

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