Self-adaptive aligning and clamping device suitable for butt welding processing of tubular parts

Abstract

The invention discloses a self-adaptive aligning and clamping device suitable for the butt welding process of tubular parts, which comprises a base body, a clamping assembly, an expansion mandrel assembly and a taper mandrel. The lower tube is clamped and aligned by the self-centering assembly of the clamping assembly, so that the datum element is coaxial with the off-site inserting plate. Sleeve the lower tube on the expansion force mandrel, and insert it coaxially on the expansion force mandrel through the taper mandrel, so that the expansion force block is gradually stretched, forming an internal support for the measured element, so that the measured element Coaxial with the expansion mandrel. And the expansion force mandrel is coaxially arranged with the first flashboard. To sum up, the axis of the first board is taken as the common datum, and the datum element is transformed through the clamping assembly, and the measured element is transformed to be coaxial with the first board through the expansion force mandrel, so as to ensure that the datum element and the measured element are The coaxial relationship, thus ensuring the positional tolerance after welding. At the same time, the first inserting plate, the first positioning sleeve, the expansion force mandrel, and the taper mandrel are arranged on the same conical surface to further improve the positional tolerance accuracy.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to an adaptive alignment and clamping device suitable for butt welding processing of tubular parts. Background technique [0002] The welding process is used to assemble several parts into one, and it is a common processing process in machining. If the parts are simply assembled and assembled, the welding process can be satisfied, but if some high-precision post-weld dimensions need to be guaranteed, a welding clamping device needs to be positioned and clamped to ensure that. [0003] Among them, it is relatively difficult to ensure the shape and position tolerance after welding. For example, for the split welding between sheet metal or thin-walled tube parts, due to the low dimensional tolerance accuracy of the part itself, it is used as a reference element and measured. When the dimensional tolerance accuracy of the element itself is also low, if it is necessary to ...

AI Technical Summary

Problems solved by technology

If the parts are simply put together and assembled, the welding process can be satisfied, but if some high-precision post-weld dimensions need to be guaranteed, the welding clamping device is required for positioning and clamping to ensure

[0003] Among them, it is relatively difficult to ensure the shape and position tolerance after welding. For example, for the joint welding between sheet metal or thin-walled tube parts, due to the low precision of the size tolerance of the parts themselves, and as the reference element and the measured When the dimensional tolerance accuracy of the element itself is also low, if it is necessary to ensure that the welded part has a high positional tolerance, coaxiality and other positional tolerances, the traditional welding fixture cannot perform better positioning and clamping. It is also difficult to achieve high-precision position tolerances

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