Sectional bending mould for machining heavy forging

Abstract

The invention discloses a sectional bending mould for machining heavy forging, includes a inclined concave mould, and a convex mould and a back pressure mould matching with the concave groove, wherein, upper surface of the inclined concave mould has a concave groove cavity with both sides end face of inner-low and outer-high inclined surface, lower surface of the convex mould has a concave plate matching with the concave groove cavity, appearance of lower surface of the convex plate is matching with shape of inner surface of middle of the forging, the back pressure mould is disposed inside the concave groove cavity with its contour of upper surface matching with shape of non-bending area of outer side of middle of the forging, the lower surface is provided with a elastic mechanism to connect with bottom of the concave groove cavity, the elastic mechanism can push the back pressure mould to upper surface of the inclined concave mould without external force. The invention can be used for machining bending of heavy forging, and has advantages of low cost and good quality.

Description

technical field [0001] The invention relates to a machining die, in particular to a segmental bending die for large forgings used for bending large forgings. Background technique [0002] The bending forming process of large forgings has always been a major problem restricting the production capacity and level of the forging industry. Due to the special structure and performance indicators of large and medium-sized forgings, it is often difficult to achieve precise bending and forming with ordinary forging equipment and tooling. If the design of the bending tool is unreasonable, there may even be serious local thinning or even cracking quality problems at the bending root of the forging that requires very high performance indicators, resulting in product scrapping. Most of the industry adopts rough bending preforming supplemented by subsequent correction process or purchases expensive special bending machine to avoid this technical problem, which virtually increases the pro...

AI Technical Summary

Problems solved by technology

Due to the special structure and performance indicators of large and medium-sized forgings, it is often difficult to achieve precise bending and forming with ordinary forging equipment and tooling.

If the design of the bending tooling is unreasonable, there may even be serious local thinning or even cracking quality problems at the bending root of the forging with very high requirements for various performance indicators, resulting in product scrapping

Most of the industry adopts rough bending preforming supplemented by subsequent correction procedures or purchases expensive bending machines to avoid this technical problem, which virtually increases product costs and makes existing general-purpose forging equipment idle

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