High-strength automobile B column stamping die and stamping method

Abstract

The invention relates to the technical field of automobile part machining, in particular to a high-strength automobile B column stamping die and a stamping method. The stamping die comprises an upperdie part, a blank holder and a lower die part, wherein the upper die part comprises an upper die base, a female die and an outer guide plate, the upper die part is fixed to the bottom of a press sliding block, the die surface of the female die corresponds to a B column in shape, and the outer guide plate guides the stroke of the upper die part; the blank holder comprises a locating key and a baffle and is used for carrying a to-be-stamped plate, and locating pins are arranged on the periphery of the blank holder and used for locating the to-be-stamped plate; a pressure adjusting pad is additionally arranged and used for adjusting the gap between the blank holder and the upper die part when the blank holder and the upper die part tightly press the plate, so that the feeding speed of the to-be-stamped plate is controlled; and the lower die part comprises a male die and a lower die base, the die face of the male die corresponds to the B column in shape, and the lower die base is fixedly connected to a press workbench. The stamping die is simple in structure and easy to operate, the manufacturing cost is lowered while the precision is guaranteed, and the stamping die can be applied to780MPa and 980MPa levels of automobile steel materials to complete stamping of automobile B column parts.

Description

technical field [0001] The invention relates to the technical field of automobile parts processing, in particular to a high-strength automobile B-pillar stamping die and a stamping method. Background technique [0002] The B-pillar of the car is the column between the front and rear doors of the car, which connects the roof and chassis of the car and plays a vital role in the strength of the side of the car. When a car collides, especially in a side collision, the B-pillar will bear most of the impact force. If the B-pillar is not strong enough, the B-pillar will be deformed or broken during a side collision, and external objects will directly invade the passenger compartment, seriously threatening safety of the occupants. [0003] At present, some auto parts manufacturers use thermoforming to produce B-pillars. Due to the high cost of thermoforming molds, the cost of auto manufacturing has increased significantly, which has seriously affected the market prospect and share ...

AI Technical Summary

Problems solved by technology

When a car collides, especially in a side collision, the B-pillar will bear most of the impact force. If the B-pillar is not strong enough, the B-pillar will be deformed or broken during a side collision, and external objects will directly invade the passenger compartment, seriously threatening occupant's life safety

[0003] At present, some auto parts manufacturers use the thermoforming method to produce B-pillars. Due to the high cost of thermoforming molds, the cost of automobile manufacturing has increased significantly, which seriously affects the market promotion prospects and share of the car.

At present, many companies still use the cold stamping process to produce B-pillars, but due to the limitation of mold manufacturing technology, the strength level of parts is limited to about 590MPa, which cannot meet the requirements of modern body design.

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