An array-type internal support fixture and flexible clamping method for large-scale spherical crown-type thin-walled parts

Abstract

The invention provides an array-type internal support fixture and a flexible clamping method for large-scale spherical crown thin-walled parts, and belongs to the technical field of clamping. The array-type inner support fixture is composed of a hydraulic drive system, a positioning clamping device and an auxiliary device. The hydraulic drive system is used to drive the hydraulic cylinder to move, and then drive the movement of the rubber plate to realize the inner support clamping. The invention adopts the method of combining the inner tire membrane with the automatic support, the structure is simple, the automatic inner supports are arranged in an array, and each group of automatic inner supports is a separate action, which can adapt to the inner surface of a relatively complex workpiece and achieve close fit with it; at the same time, it adopts The pressure plate and the pressure ring assist in clamping the upper and lower unprocessed areas of the workpiece, which can ensure the overall rigidity of the workpiece; the clamping and loosening of the clamp is controlled by the connecting valve, which is convenient to operate, realizes the function of maintaining pressure and saves costs; the invention realizes Flexible, fast and reliable clamping of spherical crown thin-walled parts.

Description

technical field [0001] The invention belongs to the field of clamping technology, and in particular relates to an array-type internal support clamp and a flexible clamping method for large spherical crown thin-walled parts. Background technique [0002] There are a large number of relatively large and spherical thin-walled parts in major equipment in the aerospace field, such as rocket tank common bottom components, rocket tank heads, etc., which need to process complex features with extremely strict precision requirements on the surface. Such as slots, grids, etc. However, the rigidity of thin-walled parts is low, and it is easy to produce obvious machining vibration during the removal of large material margins, which will lead to rapid tool wear and poor processing quality of parts, which will affect the accuracy of parts and subsequent assembly and practical application effects. In the mechanical manufacturing process, the fixture is used to fix the workpiece so that it ...

AI Technical Summary

Problems solved by technology

However, the inner expansion sleeve moves synchronously, it is difficult to adapt to the inner surface of the more complex parts, and it cannot completely fit the inner surface of the part tightly, forming a clamping cavity in a local area, resulting in vibration and deformation

[0005] In the above studies, there is no mention of an array type internal support fixture and flexible clamping method for large spherical crown thin-walled parts

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