Large-size bulging bridge shell tube blank local annealing device and process

Abstract

The invention discloses a large-size bulging bridge shell tube blank local annealing device and process. The device comprises a tubular medium-frequency annealing furnace, a tube end clamping mechanism and a longitudinal moving mechanism, wherein the device is cooperatively used with other material transferring equipment, and the continuous operation of an automatic production line of a liquid expansion forming bridge shell can be realized. According to the process, a vertical air cylinder drives an upper clamping V-shaped block to move downwards, and the upper clamping V-shaped block is matched with A lower clamping v-shaped block to clamp the end part of one side of a tube blank, a supporting V-shaped block is arranged at the front part of the lower clamping V-shaped block to support a round tube at the inner side of the tube blank, the vertical air cylinder and the upper clamping V-shaped block are arranged on a door-shaped frame, and the horizontal air cylinder drives the door-shaped frame to move longitudinally; and a servo motor drives a lead screw to rotate so as to drive a mobile platform to move longitudinally. According to the large-size bulging bridge shell tube blank local annealing device, the bulging-shaped area in the middle of the large-size bulging bridge shell tube blank with the large size after the hydraulic bulging can be uniformly heated, and the large-size bulging bridge shell tube blank local annealing device has the advantages of being energy-saving, safe in operation, reliable in clamping, convenient to operate to operate and the like, and can remarkably improve the production efficiency.

Description

technical field [0001] The invention relates to an annealing device for large-sized pipe fittings, in particular to a local annealing device and process for a large-sized central bulging hydraulically bulging axle housing blank. [0002] technical background [0003] The axle housing of the automobile drive axle is one of the main load-carrying components of the automobile, with complex geometry and high requirements for strength and rigidity. The automobile axle housing is a large-scale and complex-shaped pipe, which is in the shape of a pipa with a small middle part on the left and right sides. The hydraulic bulging process is a new type of overall forming processing method for automobile axle housing pipe fittings, which has the advantages of simplifying the manufacturing process, reducing the quality of pipe fittings, and improving the strength and rigidity of pipe fittings. When using the liquid expansion forming process to manufacture automobile axle housings, select a...

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Problems solved by technology

[0008] In order to overcome the problem of partial annealing of large-sized bulging hydraulic bulging axle housing blanks in current production practice, the present invention provides a local annealing device and process for large-sized bulging hydraulic bulging axle casing blanks

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