Manufacturing production method for supporting casing pipe

Abstract

The invention discloses a manufacturing production method for a supporting casing pipe. The production method comprises the following steps: S1, placing a sectional material whose two sides are provided with locating pieces in a first flanging die to locate; S2, an upper die of the first flanging die stamping the sectional material; S3, when the included angle between a third right plane and a horizontal plane is 150 DEG, punching and removing the locating pieces; S4, the sectional material using gravity self-localization to locate; S5, transmitting the sectional material obtained in the step S4 into a fifth flanging die; S6, transmitting the sectional material obtained in the step S5 into a sixth flanging die; S7, manually rotating the sectional material which is provided with a core rod for 90 DEG, and placing the sectional material in a lower die of a forming die, the upper die of the forming die stamping the sectional material, repeating the above process at least once, to obtain an elliptic supporting casing pipe. The manufacturing production method for a supporting casing pipe improves process convenience and reduces cost on the premise of satisfying strength requirement.

Description

technical field [0001] The invention relates to the field of automobile lightweight, in particular to a manufacturing method of a support sleeve. Background technique [0002] In order to meet the needs of modular production, parts vibration isolation, cost process and convenient parts replacement and assembly in the automotive industry, many sub-parts on the car are often connected to each other by bolts. The convenience and reliability of the bolted connection structure directly affects the production and manufacturing. The efficiency and the safety and reliability of the vehicle and the maneuverability of the vehicle. [0003] At present, most of the support sleeves used to support the bolted joints are machined circular cross-section sleeves. Although they can meet the strength requirements, due to the influence of standard pipe sizes and materials, the selection range is often limited, and the cost is too high for special ones. Secondly, it is necessary to use machinin...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the support sleeves used to support the bolted joints are machined circular cross-section sleeves. Although they can meet the strength requirements, due to the influence of standard pipe sizes and materials, the selection range is often limited, and the cost is too high for special ones. Secondly, it is necessary to use machining to open gaps at the upper and lower ends to prevent corrosion of related parts caused by rainwater accumulation in the casing when the vehicle is running. The process is complicated and the cost is increased; If it cannot be completely centered with the corresponding waist-shaped hole on the matching upper / lower piece, the phenomenon of "double eyelid" will appear, and the tolerance for adjusting the installation on the corresponding waist-shaped hole on the punching piece will be eaten

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