Self-propelled type mechanism for inner wall processing of large barrel

Abstract

The invention provides a self-propelled type mechanism for the inner wall processing of a large barrel, which belongs to the technical field of numerical control processing. The self-propelled type mechanism comprises a fixing assembly, an axial motion assembly, a movement platform, a plurality of rotating assemblies, a rotating platform and a plurality of actuating mechanisms, wherein the axial motion assembly is connected with the fixing assembly, the movement platform is respectively connected with the axial motion assembly and the rotating platform, the plurality of rotating assemblies are respectively connected with the rotating platform and uniformly distributed in a mode of a circumferential array, and the plurality of actuating mechanisms are all fixedly connected with the movement platform and the rotating platform and uniformly distributed in a mode of a circumferential array. With the self-propelled type mechanism, the simultaneous work of a plurality of processing cutters in the large barrel can be realized, symmetric processing tracks can be formed, and high-speed milling of the inner surfaces of column surfaces, agitation, friction welding and other technologies can be finished. The self-propelled type mechanism has the characteristics of compact arrangement space, large work range, high structure rigidity, good bearing property, easy control mode, high operationaccuracy, high processing efficiency, high flexibility degree and the like.

Description

technical field [0001] The invention relates to a device in the technical field of numerical control machining, in particular to a self-propelled mechanism for machining the inner wall of a large cylinder. Background technique [0002] The high-efficiency and high-precision machining of super-large diameter thin-walled cylindrical components is a key technology urgently needed in my country's aerospace and other fields. At present, the manufacture of super-large diameter thin-walled cylindrical components is mainly completed by means of roll forming, chemical milling and TIG (Tungsten Inert Gas, tungsten inert gas) welding technology. There are splicing welds in the longitudinal and axial directions. As a result, the manufactured components have poor structural strength, low dimensional accuracy, difficult shape control, and heavy chemical pollution. Different processing technology requirements also cause the overall equipment to be bulky and complex, and it is difficult to...

AI Technical Summary

Problems solved by technology

At present, the manufacture of ultra-large-diameter thin-walled cylindrical components is mainly completed by means of roll bending, chemical milling, and TIG (Tungsten Inert Gas, tungsten inert gas) welding technology. There are splicing welds in the longitudinal and axial directions. The structural strength of the manufactured components is poor, the dimensional accuracy is low, the shape control is difficult, and there is heavy chemical pollution

Different processing technology requirements also cause the overall equipment to be bulky and complex in structure, and it is difficult to complete the coordinated control among them

For large-diameter thin-walled cylinders, the existing manufacturing equipment is even more difficult to complete the milling of the inner wall surface and the tailor welding process between adjacent cylinders

At the same time, due to the use of different actuators between different processes, the processing efficiency of the equipment is low, and repositioning errors are easily introduced between the replacement of different devices, which affects the processing quality of the cylindrical surface

[0003] After searching the existing technical documents, it is found that the Chinese utility model patent number ZL200920186311.6 is named "boring machine for processing large cylinder". Welding process, and the precision is not high, the efficiency is low

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