Array type inner supporting clamp for large spherical crown type thin-walled workpiece and flexible clamping method

Abstract

The invention provides an array type inner supporting clamp for a large spherical crown type thin-walled workpiece and a flexible clamping method, and belongs to the technical field of clamping. The array type inner supporting clamp is composed of a hydraulic driving system, a positioning and clamping device and an auxiliary device. The hydraulic driving system is used for driving a hydraulic cylinder to act, then a rubber plate is driven to move, and inner supporting clamping is achieved. According to the array type inner supporting clamp for the large spherical crown type thin-walled workpiece and the flexible clamping method, the manner that an inner tire film and automatic supporting are combined is adopted, the structure is simple, automatic inner supporting array type arrangement is achieved, all sets of automatic inner supporting independently act, the array type inner supporting clamp can adapt to the inner surface of a complex workpiece, and tight attaching of the array type inner supporting clamp and the inner surface of the complex workpiece is achieved; meanwhile, a pressing disc and a pressing ring are adopted for conducting auxiliary clamping on an upper non-machined area and a lower non-machined area of the workpiece, and the overall rigidity of the workpiece can be guaranteed; a connecting valve is adopted for controlling clamping and loosening of the clamp, operation is convenient and fast, the pressure maintaining function is achieved, and cost is saved; and flexible, fast and reliable clamping of the spherical crown type thin-walled workpiece is achieved.

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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