Contact type rotary rolling method in tube barrel shaped workpiece

Abstract

The invention discloses a contact type rotary rolling method in a tube barrel shaped workpiece. The method specifically comprises the following steps: sleeving tube barrel shaped blank to be processedon a core mould, and superposing the core mould with the center axis of the tube barrel shaped blank; starting a ring barrel shaped mould in the same direction, and feeding the core mould along the center axis; introducing the tube barrel shaped blank into the ring barrel shaped mould, performing rotary rolling on the tube barrel shaped blank, and processing an unprocessed end into a finished product. The rotary rolling method for the ring barrel shaped mould adopts a mould inner surface and the outer surface of the tube barrel shaped workpiece to perform rotary rolling processing, and the working surface is an inner circular-arc ring surface of the ring barrel shaped mould, so that a greater wrap angle is formed in a contact deformation area of the tube barrel shaped blank, and a material has smaller peripheral deformation and a smaller radial deformation rate as well as greater metal axial ductility, and therefore, the contact type rotary rolling method is a technology for economically and quickly forming a thin-wall rotary part.

Description

technical field [0001] The invention relates to the technical field of spinning and rolling forming, in particular to a method for internal contact spinning of tubular workpieces. [0002] technical background [0003] The spinning or rolling technology of tubular workpieces is generally to make the metal stress position from point to line, from line to surface by rotating the mold, and at the same time give a certain pressure in a certain direction to deform the metal material along this direction and Flow to form the set shape. Existing spinning machines and rolling mills are mostly in contact with the outer surface of the deformation die and the outer surface of the workpiece, and the contact angle between the spinning wheel or roll and the blank of the tube-shaped workpiece is small, and longitudinal cracks and obvious ripples are likely to occur on the surface. defect. Contents of the invention [0004] The object of the present invention is to provide a method of in...

AI Technical Summary

Problems solved by technology

Existing spinning machines and rolling mills are mostly in contact with the outer surface of the deformation die and the outer surface of the workpiece, and the contact angle between the spinning wheel or roll and the blank of the tube-shaped workpiece is small, and longitudinal cracks and obvious ripples are likely to occur on the surface. defect

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