Tail cone molding die and molding method thereof

Abstract

The invention provides a tailcone forming mould which comprises a lower mould plate, an upper mould plate, a concave mould body and a convex mould body. The central lines of the lower mould plate, the upper mould plate, the concave mould body and the convex mould body are coincided with each other, a forming groove is formed in the center of the concave mould body, the convex mould body is fixedly arranged on the top surface of the lower mould plate, and the concave mould body is arranged under the bottom surface of the upper mould plate. The tailcone forming mould further comprises limiting columns for controlling the downward moving distance of the concave mould body, an edge pressing ring in contact with the inner lateral wall of the forming groove and a plurality of ejector rods which can enable the edge pressing ring and the forming groove to clamp a formed workblank; the ejector rods are respectively arranged on the lower mould plate and evenly distributed around the convex mould body in the peripheral direction; the ejector rods abut against the bottom edge of the edge pressing ring and can drive the edge pressing ring and the formed workblank; the at least two limiting columns are evenly distributed between the edge pressing ring and the lower mould plate; the height difference between the top surfaces of the limiting columns and the bottom surface of the edge pressing ring can be determined by the distance between the top end of the formed worblank and a conical face of the convex mould body in the vertical direction. According to the tailcone mould, the rate of finished products of tailcones can be improved to 100% from 50%, the percent of pass is verified repeatedly, and the effect is stable.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a tail cone molding die and a molding method thereof. Background technique [0002] Tail cone parts are commonly used in aero-engines. The structure of the tail cone can be a single conical surface or a tail cone that includes a conical surface, a transitional arc surface and a cylindrical surface. Such as figure 1 The shown tail cone 100' includes a conical surface 110', a transition arc surface 120' and a cylindrical surface 130' at the same time. When the tail cone 100' is in use, it is often necessary to weld the two ends of the part to parts such as mounting edges. Welded assembly such as figure 2 As shown, tail cone 100' is inserted into part 200' to be welded. The welding points of the tail cone 100' and the parts to be welded 200' are A and B (places A and B are actually the joint surfaces of the tail cone 1' and the parts to be welded 2'). A is spot welding and B is sea...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a tail cone molding die and its molding method to solve the problem of the irregular shape of the molding blank in the prior art, which cannot be accurately positioned and causes the top of the blank to be skewed after the blank is formed. The technical problem that the material may be extruded and superimposed to cause the scrapping of the part

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