Combined anvil die and process for forging large crank throw

Abstract

The invention relates to a combined anvil die and process for forging a large crank throw. The combined anvil die comprises a forging machine and two manipulators, and the forging machine comprises an upper anvil, a lower anvil and an upper die. The upper anvil is connected to the lower end of a forging machine upper anvil block and is fixedly arranged as a flat anvil; and the lower anvil comprises an anvil die, a longitudinal workbench and a transverse workbench, the anvil die comprises a large flat anvil, a small flat anvil, a duplex pressing die, a trapezoidal die, a concave lower die and a drain plate, the drain plate is arranged on the longitudinal workbench, the anvil die is arranged on the transverse workbench, and the upper die comprises a forming core die, a reverse buckling bending die and an upsetting plate and is clamped by the manipulators. The combined anvil die and process for forging the large crank throw is divided into eleven working steps, the anvil die and the upper die are arranged to be movable anvil dies which can be replaced at any time, part of the anvil die and the upper die are placed on the workbenches to be moved and replaced, part of the anvil die and the upper die are clamped and replaced by the manipulators, so that a plurality of forging working steps can be completed by one heating number, and a traditional forging process with 5-7 heating numbers is reduced to 2-3 heating numbers. The combined anvil die and process for forging the large crank throw has the advantages of energy conservation, consumption reduction, high quality and high efficiency.

Description

technical field [0001] The invention relates to the production of a crank throw forging billet, in particular to the setting and process of an anvil die for large crank throw forging, and belongs to the technical field of forging. Background technique [0002] The crankshaft is the main part of the mechanical transmission, and the crankshaft is an important part on the crankshaft. Because the crankshaft undertakes the conversion of mechanical rotation and reciprocating motion, the crankshaft of a large crankshaft bears large and complicated forces, so it must have sufficient rigidity, strength and Ability to withstand shock loads. In order to meet the above performance requirements, forged bell cranks are usually used. Common forging methods include: solid forging method, die forging method and bending forging method. The solid forging method is to forge the blank into a square and then machine it into shape. This method not only has a large machining allowance and high cos...

AI Technical Summary

Problems solved by technology

However, the existing bending and forging method needs processes such as jaw pressing, upsetting, billet drawing, grooving, bending, and finishing shape. Each process needs to replace the anvil die, especially the upper anvil of the forging machine needs to be replaced many times, resulting in The forging machine cannot perform multi-process continuous forming operations

The above-mentioned forging process requires multiple fires and repeated heating, consumes a lot of energy and raw materials, has low production efficiency, and high product cost

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