Multi-point flexible roll forming method of three-dimensional curved surface member processing
A technology of rolling forming and three-dimensional curved surface, which is applied in the field of multi-point flexible rolling forming technology of sheet metal, can solve the problems such as the undiscovered forming process of three-dimensional curved surface components, and achieve the effect of reducing quantity, improving dimensional accuracy and reducing equipment cost
Active Publication Date: 2013-05-22
SHANGHAI JIAO TONG UNIV
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And, through existing document retrieval, do not find the same three-dimensional curved surface component forming process as the present invention
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Embodiment 1
[0073] In this embodiment, an aluminum alloy sheet 2A12-O with a length of 2000mm, a width of 1500mm, and a thickness of 7mm is taken as the blank, and such as figure 1 The shown device processes the plate, and finally realizes the processing of a simple cylindrical member with a diameter of 3350 mm in the width direction. The device includes: a forming frame 2, a forming roller 3 and a base 4, the forming roller 3 is arranged on the forming frame 2, the forming frame 2 is connected with the base 4, and after the sheet material 1 enters the device, the forming roller 3 and the sheet material 1 Friction is generated between them to drive the blank 1 forward along the rolling direction.
[0074] Such as figure 2 As shown, it is a schematic diagram of the transverse forming principle of the processing device of the present invention. In this embodiment, 11 forming rollers 3 are arranged transversely to form 9 passes. The center positions of each adjacent three forming rollers ...
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The invention provides a multi-point flexible roll forming method of three-dimensional curved surface member processing. The multi-point flexible roll forming method of the three-dimensional curved surface member processing comprises the steps of unfolding the shape of a required processed member into a surface plate and confirming the shape size of the plate material; confirming forming step times, forming amount of each forming step, and corresponding forming amount after springback compensation according to processing shape of the member; calculating the theoretical position of forming rolls and adjusting the position and posture of forming rolls in first three steps; and conveying the plate material into a forming device, rotating formed rolls to drive the plate material to go forward along the rolling direction, finishing process of the first three steps with the plate material outputted from the forming device, adjusting the roll position to turn back the formed rolls to achieve the reverse movement of the plate material, and finishing forming of last three steps. Thus, processing can be finished until the required forming step times is achieved in a rollback way. The multi-point flexible roll forming method of the three-dimensional curved surface member processing has the advantages that the faults of the existing flexible forming process are overcome, cost is low, efficiency is high, and complete quality is high.
Description
technical field [0001] The invention relates to the field of multi-point flexible rolling forming technology for metal sheets, in particular to a multi-point flexible rolling forming method for processing three-dimensional curved surface components. Background technique [0002] Sheet metal forming is an important branch of modern manufacturing industry, and is widely used in many industries such as automobile, shipbuilding, aerospace, chemical industry, and urban construction. 75% of the parts in the car are stamped parts, which are produced by mold processing. However, for the trial production of new models and the individual needs of some consumers for cars, targeted single-piece or small-batch flexible forming methods are required. . In the modern shipbuilding industry, single-ship or small-batch production is generally carried out, and the size and shape of each hull plate of each ship are different, which is not suitable for traditional mold processing methods, and re...
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IPC IPC(8): B21D5/06
Inventor 于忠奇王皓来新民林忠钦孔庆帅
Owner SHANGHAI JIAO TONG UNIV