Flange shaft forging method

Abstract

The invention discloses a flange shaft forging method. The flange shaft forging method includes steps of (1) manufacturing a special composite die composed of an outer die, an inner die, a press block and a drain plate; (2) placing the inner die into the outer die and pressing to form a complete die; (3) placing a heated blank into an inner die cavity; (4) placing the pressing block on the blank and in the die cavity; (5) forging and pressing the press block into the die cavity so as to allow the blank to deform and fill with the die cavity; and (6) lifting the integral die to place on the drain plate, stamping the press block to enable the press block and the inner die to separate from the outer die, separating the press block and the inner die, and taking out the forged blank. Compared the prior art, the flange shaft forging method is easier in demoulding, reverse rotation dies are omitted, demounting way is changed, time and labor are saved, and speed and efficiency are high. The inner die is light in weight and easy to carry and cool. Further, multiple inner dies can be used by turns, the service live of the die is prolonged, and forging cost is reduced. The flange shaft forging method is convenient to operate, low in consumption and applicable to forging and forming of circular and special-shaped flange shafts.

Description

technical field [0001] The invention belongs to the field of forging, in particular to a forging method of a flange shaft. technical background [0002] Flange shafts are important parts of automobiles, agricultural machinery and other mechanical equipment. With the continuous development of my country's automobile manufacturing industry, agricultural machinery manufacturing industry and other machinery manufacturing industries, the demand for forged parts is increasing, and the technical requirements are getting higher and higher. In the known technology, the forging method of the flange shaft adopts the method of single-die forging, which is to process a cavity on a mold that is consistent with the shape and size of the required flange shaft forging. The blank is put into the mold cavity, and the blank is deformed to fill the cavity by forging, and then the mold is turned over, and the flange shaft forging is punched out of the mold to complete a forging process of the fl...

AI Technical Summary

Problems solved by technology

This forging method has several disadvantages: 1. The labor intensity of the operator is high. Since each forging piece needs to be turned over once, it needs to pay more physical labor, and it takes more time and the work efficiency is low.

2. Forgings are difficult to remove from the mold. Generally, the shaft of the flange shaft is long. It is difficult to grasp the force required to stamp out the forging from the mold. It is necessary to use a small force to stamp out the mold several times.

3. It is inconvenient to cool the mold. Because the single mold is large in size, relatively heavy, and the cooling speed is slow, it cannot be operated continuously. If it is operated continuously, the temperature inside the mold cavity will rise and the hardness will decrease. At this time, it is necessary to stop and cool the mold. Otherwise, the mold cavity will be damaged. Partial internal deformation may require repair, or the mold may be scrapped

To sum up, this forging method has high labor intensity for operators and low work efficiency, so it is necessary to study a new forging method