The machining of parts reinforced with ribs may lead to deformations expressed by two-axis bending and twisting. An effective method to eliminate such deviations is rolling, which unlike pressing, excludes cracking of aluminum alloys [1-3]. The developed set of manual rolling tool allows processing ribs and blades of a part to receive deformation in two planes. The development of levelling technology that includes mechanized rolling unit and software for automated calculation of process parameters of rolling seems quite promising.
Aluminum alloy parts of the aircraft’s power frame are usually ribbed longitudinally and transversely to increase rigidity. As a result, the cross-section of such parts is a complex complex shape in the form of a brand, channel, I-beam, etc. with straight and inclined shelves. In the manufacturing of parts in the process of both mechanical processing and subsequent impact hardening there is an undesirable deformation (leashes), which is expressed in the deviation from the plane and saber-like form. After milling, the leashes can be removed by local plastic deformation methods, such as rolling by rollers, or by pressing, and after hardening, mechanical treatment, including straightening by local plastic deformation methods, is not allowed by the industry standard technical procedure. Expansion of technological possibilities of manufacturing of low-rigid parts with application of technology of preventive deformation -introduction of pre-distortion of the form of a detail for compensation of the leashes arising on the subsequent strengthening operations by methods of surface plastic deformation.
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