Curved-surface self-adaptive clamp for laser welding of spatial curved surface fan blade

Abstract

The invention discloses a curved-surface self-adaptive clamp for laser welding of a spatial curved-surface fan blade. The curved-surface self-adaptive clamp comprises a mounting assembly, compressingassemblies and supporting assemblies, wherein the mounting assembly comprises a base plate and a mounting table fixed at a central location of the base plate, a fan blade base body is fixed to the upper end of the mounting table through a positioning groove at the bottom surface of the fan blade base body, the number of the compressing assemblies and the supporting assemblies is the same as the number of blades of the fan blade, and the compressing assemblies and the supporting assemblies are matched for use; and multiple points with adjustable posture of the compressing assemblies are compressed on the parts, corresponding to blade connecting positions, of the upper surface of the wind guiding ring, and the profiling surfaces of the supporting assemblies are supported on the top of the outer sides of the blades, so that pressure of the compressing assemblies is transmitted to the supporting assemblies, the wind guiding ring is tightly attached to the blades to provide the guarantee for high-quality laser welding between the wind guiding ring and the base body blades. Due to the fact that pressing positions of the compressing assemblies to the wind guiding ring are adjustable, theprofiling surfaces of the supporting assemblies are supported on the base body blades, the clamp has universality, and can clamp and fix the spatial curved-surface fan blades of different specifications of the same type.

Description

technical field [0001] The invention belongs to the field of fan blade welding fixtures, in particular to a curved surface self-adaptive fixture for laser welding of space curved surface fan blades. Background technique [0002] Centrifugal fan blades are mainly used in the fields of air conditioning and ventilation. With the development of social productivity, the demand for centrifugal fan blades is increasing, and the production scale is also increasing. Centrifugal fan blade parts are limited by injection molding, extrusion and other processes. Plastic products with complex shapes or structures cannot be processed at one time, and need to be connected by secondary processing technology. Ultrasonic plastic welding can be used for welding the existing centrifugal fan blades. This welding method is noisy and the working environment for operators is poor. Ultrasonic plastic welding is a high-frequency vibration welding method. There is uneven stress inside the workpiece and ...

AI Technical Summary

Problems solved by technology

However, the applicable workpiece of this device is the axial flow fan blade, and the fan blade is welded on the fan blade wheel hub by ordinary welding. In order to prevent the fan blade from being deformed during welding, the clamping method is single-point compression, and each The deformation of the blades is different, so the device has limitations and is not suitable for clamping fan blades on space curved surfaces

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