Precision rolling die and method for rectangular-section ring piece with outer island boss

Abstract

The invention discloses a precision rolling die and method for a rectangular-section ring piece with an outer island boss. The die comprises a driving roller capable of actively rotating, a core roller and a combined cover die; the driving roller or the core roller can be fed linearly; the combined cover die comprises a plurality of sectioning dies capable of being encircled into a circle, an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are used for clamping and connecting all the sectioning dies up and down; core roller passing holes are formed in the middle of the upper clamping plate and the middle of the lower clamping plate correspondingly; an annular groove is formed in the inner surface of each of the sectioning dies, the upper clamping plate and the lower clamping plate; the outer cylindrical surface of the combined cover die makes contact with the driving roller and can be driven by the driving roller to rotate; the annular grooves are used for containing ring blanks; the middle of the combined cover die can contain the core roller, and the working portion of the core roller can stretch into the annular grooves in a matched mode; grooves matched with the outer island boss are formed in the corresponding positions of the inner surfaces of the sectioning dies; and the annular grooves and the grooves are matched with the outer surface of the rectangular-section ring piece with the outer island boss. The rectangular-section ring piece with the outer island boss can be rolled and formed in a near-net mode, and the machining allowance is low.

Description

Technical field [0001] The present invention belongs to the field of forging and ring rolling techniques, and more particularly to a rectangular cross-sectional ring for a rectangular cross-sectional ring of a bandwide island boss. Background technique [0002] In the field of forging and ring rolling technology, a loop rolling of a larger having a larger wall thickness of a large wall thickness is referred to as a loop rolling process of a loop forging having a larger wall thickness of a large wall thickness. The existing rolling equipment can be divided into horizontal ring rolling mills and vertical ring rolling mills according to different classifications, or is divided into a radial ring rolling mill and a radial ring rolling mill. A variety of different rolls can be rolled over a variety of different roll types on these ring rolling mills. [0003] However, there is a circularly symmetric rebound feature of the existing annular rolling mill and rolling process, which cannot...

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Problems solved by technology

[0003] However, the ring forging products produced by existing ring rolling mills and rolling processes all have the characteristics of axisymmetric gyratory bodies, and cannot roll rings with island bosses on the outer surface of the gyratory body (the island bosses mentioned here mean that the bosses have certain height and discontinuity, randomly distributed on the outer surface of the rotary body ring), for this kind of ring with outer island bosses, at present, a larger rotary ring forging that envelops the outer island bosses is first rolled, and then passed CNC milling (because CNC lathes cannot be processed, usually 5-axis simultaneous milling is required to process the 3D curved surface of the outer surface) removes excess material on the outer surface except for the boss, which greatly increases the machining cycle and reduces the overall cost of the product. Manufacturing efficiency, and waste of raw materials, especially in the aerospace field, a large number of high-temperature alloy titanium alloy materials are used, not only more difficult to process, but also more expensive raw materials to waste

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