Difficulties and Overcoming Ways of Large Die Forging in High Speed Machining

Because of the limitations of traditional processing methods, it has been gradually replaced by the dominant digital processing technology, which plays a vital role in the forming of the workpiece. In the field of aeronautics, because of its complex structure and high precision requirements, it is difficult to guarantee the processing accuracy and processing cycle of complex parts even in digital speech processing technology.

In this case, some aeronautical complex die forgings began to use modern high-speed machining technology, but this is still in the exploratory stage, there is no experience to learn. As the main load-bearing component of aircraft, its blank is die forging and its material is high-purity alloy, so it has high plastic fracture toughness and good fatigue crack growth resistance.

Therefore, the structural status of these alloys must be carefully considered when processing their parts and parts. The interior transition radius of machined surface should be chosen according to the cross-section size, but the material thickness should be no less than 2 mm. Smooth transition should not occur in the process of connecting parts.

In the processing of this large-scale die forging, the difficulties are manifested in many aspects, including the inconvenience of clamping and positioning in the process of processing, the influence of processing deformation on the processing accuracy of parts, the arrangement of NC processing procedures and the rationality of NC processing procedures required by the complex shape of parts and assembly coordination relations, and the complex structure of ear grooves on parts and the strict tolerance of thickness and size. And so on.

Therefore, the goal of the forging manufacturer's processing plan is to solve these difficulties. In order to improve the processing efficiency of the part, the blank state of the forging was changed. When the forging blank is out of the factory, it carves out the center cross line of the reference technological hole, and then aligns directly according to the center cross line of the technological hole and sets the origin of the NC machining directly, so there is no need to coordinate the machining allowance in the process.

The special height fixture is used in the processing of large die forgings, which avoids the problem that the tool side edge can not be processed normally because of the too long tool. At the same time, the rigidity of the machine tool is ensured, the processing safety is ensured and the service life of the tool is prolonged.

In addition, when processing die forging edge and groove, ear groove, inner shape and other aspects, the programming method is adopted, which greatly improves the processing accuracy and reduces the deformation of parts.

Die Forging Manufacturer, Truck Front Axle, Large Die Forging Selection Linyi Hongsen Rail Transit Material Co., Ltd.