Processing method of brim-shaped curved surface wallboard part

Abstract

The invention discloses a processing method of a brim-shaped curved-surface wallboard part. A brim-shaped curved-surface wallboard is composed of a curved surface and a circle of plane flange which is additionally arranged on the edge of the curved surface and forms a variable dip angle with the curved surface. The machining process of the brim-shaped curved-surface wall plate comprises the steps that the concave surface and the convex surface are roughly machined, and a reference hole coarse hole is formed; natural aging; milling a reference surface and a processing reference; finish machining the concave surface; the deformation adjusting device adjusts the opening size of the concave surface to the theoretical size to meet the tolerance requirement; then, the part is clamped through a curved surface vacuum adsorption milling machine clamp, and rapid positioning of the brim-shaped curved surface wall plate in the length direction and the width direction is achieved through three positioning pins and datum holes; and finally finishing the convex surface. The deformation adjusting device is adopted, the problem of local deformation of the part is well solved, and it is guaranteed that the datum of the machined concave face and the datum of the machined convex face coincide; and the problems of uneven wall thickness and processing vibration of the curved web plate can be well solved through the curved vacuum adsorption milling machine fixture.

Description

technical field [0001] The invention belongs to the technical field of machining, and relates to a processing method for a brim-shaped curved wall panel part. Background technique [0002] The brim-shaped curved wall panel part is different from the conventional curved wall panel. Its structure is formed by adding a plane flange with a variable inclination angle to the curved surface on the basis of the conventional curved surface panel. The flatness of the planar flange and the contour of the curved surface are highly required, and the flatness and surface contour must be controlled within 0.3mm. The traditional manufacturing process of the hat brim curved wall panel adopts the manufacturing method of welding ribs after sheet metal forming. Due to the influence of forming errors and welding deformation, the state of the hat brim curved wall panel structural parts is unstable, and the product quality is difficult to guarantee. [0003] The brim-shaped curved wall panel part...

AI Technical Summary

Problems solved by technology

Difficulties in processing brim-shaped curved wall panel parts are as follows: ①The concave surface is composed of a plane and a curved surface without reinforcing ribs. After processing, the plane is easily deformed, and the contour of the curved surface of the part is easy to be out of tolerance, which makes it difficult to find the machining datum of the convex surface.

② The wall thickness accuracy is high, and the convex surface is processed as a curved surface with variable thickness, which is difficult to meet the wall thickness accuracy requirements

③After the part is finished, the plane flange around the part is warped and twisted, which cannot meet the flatness requirement of 0.3mm

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