A Spinning Forming Method for Multi-Segment Deep Cylinder and Deep Cone Combination Surface Shell Parts

Abstract

The invention discloses a multi-segment deep-cylinder deep-cone composite surface shell part spinning forming method. The multi-segment deep-cylinder deep-cone composite surface shell part spinning forming method comprises the following steps of (1) preparing a plate, (2) machining the disk blank into a semi-finished product part through cutting and spinning, (3) machining the semi-finished product part into a cylinder part through conventional spinning, (4) carrying out shaping spinning treatment on the cylinder part, and (5) carrying out machining on the end portions of the two ends of the cylinder part, obtained in the step (4), subjected to shaping spinning with a machine tool to finally obtain the qualified cylinder part. According to the multi-segment deep-cylinder deep-cone composite surface shell part spinning forming method, shell parts are integrally formed with a spinning method. The multi-segment deep-cylinder deep-cone composite surface shell part spinning forming method has many advantages of being high in product strength and accuracy, simple in operation sequence, high in production efficiency, good in homogeneity of products, small in number of input dies, and thelike. The formed parts are better in structure property and mechanical property.

Description

technical field [0001] The invention relates to the technical field of precise plastic processing, in particular to a spinning forming method for multi-section deep cylinder and deep conical combined surface shell parts. Background technique [0002] With the development of high-altitude and high-speed UAVs, the micro-turbojet engines of their power systems are also diversified, and the thrust level is basically fully covered. The structure of the engine shell is roughly the same, but its size is different; The speed of replacement is accelerating, the requirements for its development and manufacturing cycle are getting shorter and shorter, and the requirements for its processing accuracy and strength after forming are getting higher and higher. At present, the traditional deep-drawing forming process is generally used for processing such parts. This process requires more molds, longer production cycle, and poor surface quality. Generally, there are 3 to 4 stretches in the p...

AI Technical Summary

Problems solved by technology

At present, the traditional deep-drawing forming process is generally used for processing such parts. This process requires more molds, longer production cycle, and poor surface quality. Generally, there are 3 to 4 stretches in the processing process, accompanied by The total process of solid solution treatment, turning, spinning and so on reaches more than 30 processes

Spinning is a precise plastic forming process, which is widely used, but the structure of the micro-turbojet engine shell parts belongs to the multi-section deep cylinder and deep conical composite surface parts, and the cylindrical and conical wall thickness of the parts are inconsistent. The wall thickness of the cylindrical shape is 0.5mm, the wall thickness of the conical shape is 1.0mm, and the dimensional accuracy requirement of the straight section of the small cylinder is To ensure its accuracy, the processing is more difficult

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