Spinning forming device with bionic anti-drag surface fairing and forming method

Abstract

The invention provides a spinning forming device with a bionic anti-drag surface fairing. The spinning forming device comprises a blank piece, the blank piece is fixed to a clamp, and a forming part of the blank piece is exposed out of the outer side of the clamp, the clamp performs circumferential rotation motions along with a main shaft, an idler wheel is in a disc shape, a plurality of idler wheel filling grooves extending inwards in the radial direction are evenly formed in the outer circumferential face of the idler wheel, the idler wheel is connected with an external power device, and meanwhile, the external power device can control the idler wheel to fully extrude the blank piece at a certain feeding speed and axial feeding amount, so that the diameter of the blank piece is continuously reduced, and shark fin-shaped streamline bulges which are regularly arranged are left on the outer surface of the forming part of the blank piece. By means of the spinning forming device with the bionic anti-drag surface fairing, the shark fin-shaped streamline bulges are arranged on the outer portion of the fairing machined through the device, wind resistance can be well reduced, and meanwhile, the cost is low.

Description

technical field [0001] The invention relates to the technical field of spinning forming methods, in particular to a spinning forming device and forming method with a bionic drag-reducing surface fairing. Background technique [0002] Spinning forming technology can effectively reduce the design wall thickness of parts, reduce weight, and improve fatigue performance. It has become an important means of manufacturing fairings. The function of fairings is mainly to adjust airflow. At present, the reduction of the resistance suffered by the fairing mainly depends on improving the streamline shape of the fairing. The general fairing is a pointed rotary body, which can be directly obtained by spinning, but in terms of reducing the resistance, the required The shape is more complicated, especially for the large-sized fairing, the preparation workload is relatively large, and the process rigidity of the obtained fairing is relatively small. Therefore, it is necessary to propose an ...

AI Technical Summary

Problems solved by technology

The pure streamlined shape has limited ability to reduce wind resistance, and the linear shape is not easy to guarantee. The outer surface of the fairing can be improved from the perspective of bionics to further reduce the air resistance encountered during exercise.

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