Special crankshaft multi-bend reversing machine

Abstract

The invention provides a special crankshaft multi-bend reversing machine. A hydraulic machine is fixedly installed on a single rectangular machine body vertical support, a sliding block with an upper die part is driven through a main hydraulic cylinder in a driving mode, the sliding block is in sliding fit to stand column longitudinal sliding rails on the two sides of the machine body vertical support in a sliding mode, a lower die part is installed on a lower support, a fixed die frame and a rotary die disc which correspond to each other in an up-and-down mode are assembled in the upper die part and the lower die part, a twisting arm is pivoted between stand columns on the two sides, and a pivoting center is coaxial with the rotary die disc. According to the technical scheme, a conventional three-beam four-column main machine structure is removed, device occupied space and land occupied areas are greatly reduced, operation space is accordingly released to the maximum degree, it is important that the twisting structure has the advantages that the power is high, and the maximum twisting corner is large in scope, the twisting quality and the twisting effect are guaranteed, and the machining efficiency is improved.

Description

technical field [0001] The patent application of the present invention relates to crankshaft torsion equipment for radially twisting hot forging blanks of plane forged steel crankshafts, and is especially suitable as crankshaft processing equipment for twisting hot forging blanks of forged steel crankshafts for automobile engines. Background technique [0002] The crankshaft is a critical component in an engine. When the four-cylinder engine and the six-cylinder engine have become the mainstream power devices of automobiles today, the radial angle distribution of each connecting rod journal in the crankshaft structure of the engine is different. Technical challenges faced by processing development. Traditional machining methods mainly use casting and balance block inlaid assembly technology to produce such complex crankshafts, but more and more crankshaft products are made of forged steel materials, and traditional processing methods can no longer adapt to the development o...

AI Technical Summary

Problems solved by technology

Part of the pressure exerted by the machine tool is required for mold clamping, and the other part is scattered and transferred to the support arm. Due to the limitation of the support strength of the support arm and the structural characteristics, the torsional moment is small, and it is also limited by the structure and size of the mold. It is only suitable for processing small Crankshaft products, such as three-throw crankshafts, are only used as supporting devices for ordinary press machine tools

Furthermore, after the lower half mold of the loaded crankshaft blank is buckled with the upper half mold and before the twisting is completed, the pressure exerted by the machine tool is limited and the torque of the support arm is small, so it is difficult to ensure that the upper and lower twisting modules are in a fully clamped state. The small mold clamping environment is not good, and the twisting force of the mold clamping is uneven. The dual factors affect the twisting quality and twisting processing effect; another technical problem is: this mold is a closed structure, and can only be used as a single crankshaft product Used for twisting processing, it cannot be used as a serialized mold for the processing of various crankshaft products, the cost of replacement is high, and it cannot meet the needs of industrial process mass production

However, the assembly parts are huge, the overall space and floor area are large, and the operable space is greatly limited, which increases the distance between the conveying device and the operating table, and the cost remains high.

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