Overlarge type ring rolling machine

Abstract

The invention relates to the field of metal pressure moulding and provides an overlarge type ring rolling machine which has large rolling force, good rigidity, high processing precision, high processing efficiency and low processing cost and can be suitable for the manufacturing requirement on a large cylindrical section. A stand of the overlarge type ring rolling machine comprises a drive side stand and an operating side stand which are longitudinally and oppositely arranged, both ends of each roll are supported, and axes are horizontally arranged; a drive roll is arranged at the lower part of the stand, and a core roll is positioned on the drive roll; at least one of double axial directions of the core roll is set to be a drawing direction of the core roll, one end of the core roll points to the other end along the drawing direction, the starting point end is a suspending end, and the terminal point end is a drawing end; a drawing unit comprises the core roll and a drawing end core roll bearing seat thereof or the core roll and core roll bearing seats at both ends of the core roll; the overlarge type ring rolling machine is provided with a roll drawing mechanism for doing reciprocating motion along the drawing direction of the core roll; and the roll drawing mechanism is provided with a detachable type fixing structure of the drawing unit. The invention is suitable for producing a large cylindrical section with large axial size, weight and wall thickness in the fields of large nuclear power, petrochemical container, aerospace, and the like.

Description

technical field [0001] The invention relates to the field of metal pressure forming, in particular to a super-large ring rolling machine for processing cylindrical forgings. Background technique [0002] Ring parts are all kinds of seamless ring forgings such as bearing rings, ring gears, flanges, hubs, etc. Ring products are widely used in machinery, automobiles, trains, ships, petrochemicals, aerospace, atomic energy, wind power and many other industrial fields . Ring rolling is also known as ring rolling, ring rolling expansion, hole expansion, and ring rolling, that is, through rolling equipment, the ring is continuously and locally plastically deformed, thereby realizing plastic processing such as wall thickness reduction, diameter expansion, and cross-sectional profile forming. craft. [0003] The commonly used equipment for ring rolling is ring rolling machine, also known as ring rolling machine, ring rolling machine, hole reaming machine, which includes frame, driv...

AI Technical Summary

Problems solved by technology

[0006] Due to the single frame structure, the existing ring rolling machines generally have the following disadvantages: poor rigidity, large deformation of the suspended side of each roll during rolling, which is not conducive to improving the rolling capacity

However, this kind of large-scale barrel joint has extremely high requirements on equipment capacity, and the production is difficult. The existing ring rolling machine equipment and technology cannot adapt to its production.

Therefore, at present, the production of large-scale cylindrical forgings has to rely on large-scale hydraulic presses for free forging. This process has low production efficiency, poor dimensional accuracy, low utilization rate of forgings, multiple heating, high energy consumption, and high manufacturing costs of forgings.

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