A kind of internal spinning forming method of cylinder with inner and outer ring reinforcing ribs

Abstract

The invention provides an internal spinning forming method of a cylinder body with an inner ring reinforcing rib and an outer ring reinforcing rib. The internal spinning technology and the tension spinning technology are combined, so that the inner ring reinforcing rib and the outer ring reinforcing rib can be formed once in the same mold and in the same spinning process, and the problems that dueto the fact that the internal strong spinning technology or the external strong spinning technology is adopted, a sectioning mold is required to be adopted, the mold cost is high and the production efficiency is low are thoroughly solved. According to the method, axial traction motion is added and is independent from axial motion of a spinning roller, the spinning position can be selected freely,optimal matching of the spinning track can be realized so that the outer ring reinforcing rib and the inner ring reinforcing rib which are located at any position can be easily formed; and the plurality of outer ring reinforcing ribs and the plurality of inner ring reinforcing ribs can be continuously formed, so that the adaptability of the technology is greatly improved, and the product structure which cannot be realized through the existing technology is realized.

Description

technical field [0001] The invention relates to a spinning forming method in a cylinder with inner and outer ring reinforcing ribs, and belongs to the technical field of spinning forming. Background technique [0002] External spinning is a traditional spinning process technology. The external spinning technology can produce long-length cylindrical rotary parts with external reinforcing ribs. It has high efficiency, can be heated for spinning, and can process curved generatrix shapes. And tapered parts and other characteristics. However, the length of the external spinning die is required to be longer than the length of the product, which is difficult to manufacture, low in assembly accuracy, and high in production costs. Most importantly, products with inner circumferential ribs formed by the external powerful spinning process must be split Molds must be disassembled and reassembled every time a product is produced. The production efficiency is extremely low and it is not ...

AI Technical Summary

Problems solved by technology

However, the mold length of the internal spinning technology is required to be longer than the product length, which is difficult to manufacture, low in assembly accuracy, and high in production costs. Most importantly, this process can only produce products with a length of less than 1m. If the product is too long, the workpiece If the contact area between the outer surface and the mold is too large, the friction force is large, and the workpiece will not be released from the mold, so it cannot be applied to the production of large-diameter, high-precision long cylindrical parts required for the development of the national defense industry.

The most important thing is that the products with outer circumferential ribs formed by the internal spinning process must use split molds. Every time a product is produced, the mold must be disassembled and assembled again. The production efficiency is extremely low and it is not suitable for mass production. Low cost, high efficiency, high precision and high quality requirements of national defense industry products

[0004] Existing internal spinning equipment such as Figure 10 As shown, (including spinning machine body 01, mandrel 02, rotary wheel 03, workpiece 04, balance wheel mechanism 05, screw 06, binder ring 07, rotary wheel arm 08, and lateral carriage 09), the use Lateral L-shaped cantilever type single-roller internal spinning mechanism, the shaft and radial feed of the spinner 03 are driven by the lateral carriage 09 to drive the L-shaped spinner arm 08 fixed to it, driven by the motor. , Radial movement is realized, the spinning wheel arm is too long, the rigidity of single wheel spinning is extremely low, automatic centering spinning cannot be realized, and the spinning force is small, it is impossible to carry out spinning processing of thick-walled difficult-to-form materials, and cannot meet high-precision Product processing

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