Thin-walled cylinder part automatic internal supporting clamp and clamping method

Abstract

The invention belongs to the technical field of clamping, and relates to a thin-walled cylinder part automatic internal supporting clamp and a clamping method. According to the clamping method, the thin-walled cylinder part automatic internal supporting clamp is adopted, the clamp is composed of a power driving system, a positioning and clamping device and an auxiliary device; vertically clampingthe thin-wall cylinder part is carried out, a motor lead screw system is used for driving a taper mandrel to move in the axial direction, an inner supporting expansion sleeve is driven to move in theradial direction, inner supporting clamping of the thin-wall cylinder part is achieved, the clamp is provided with the rigid inner supporting expansion sleeve with the force expanding characteristic,the structure is simple, small driving force is converted into large inner supporting force, even inner supporting is achieved; uniformly distributed radial force is applied to the surface of the inner part of the thin-walled part, so that the local rigidity of a machining area is greatly improved; the servo motor lead screw system is adopted for driving, the motion precision is high, the stability is good; and a clutch braking system is adopted, braking is rapid, self-locking can be achieved, and the clamping reliability is effectively improved.

Description

technical field [0001] The invention belongs to the field of clamping technology, and in particular relates to an automatic internal support fixture and clamping method for thin-walled cylindrical parts. Background technique [0002] There are a large number of relatively large and thin-walled cylindrical parts in major equipment in the aerospace field, and high-reliability inner support clamping is required during processing. In actual production, commonly used inner support clamping methods mainly include the overall rigid support of the inner tube, filled inner support, etc. In the overall rigid support of the inner tube, the outer surface of the inner tube (ie, the supporting surface) is designed to be consistent with the inner surface of the part (ie, the surface to be supported). However, due to the large forming error of thin-walled parts and the strong load-resistance capacity of cylindrical parts, it is difficult to ensure that the two surfaces are close to each ot...

AI Technical Summary

Problems solved by technology

However, in this method, the support rigidity of the arc-shaped plate is low, and the local rigidity of the processing area of ​​the thin-walled parts cannot be guaranteed, so it is difficult to meet the high-precision and high-efficiency manufacturing requirements of the thin-walled parts.

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