Composite bending and forming process for non-equal-height cross-shaped rib type pieces

A technology of bending forming and cross ribs, which is applied in the field of compound bending forming technology, can solve the problems of high mold life and small forming force, and achieve the effect of high mold life and low forming force

Active Publication Date: 2015-05-27
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the shortage of thinning key parts in the existing thin film forming process with ribs, the present invention proposes a compound bending forming process for non-equal-height cross-rib parts, which utilizes different sliding blocks, top blocks, punches and dies. Cooperating with the movement to form the high and low ribs and their cross regions can effectively solve the shortcomings of the traditional plastic forming process for non-equal height cross ribs, and the forming force is small and the mold life is long

Method used

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  • Composite bending and forming process for non-equal-height cross-shaped rib type pieces
  • Composite bending and forming process for non-equal-height cross-shaped rib type pieces
  • Composite bending and forming process for non-equal-height cross-shaped rib type pieces

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Embodiment 1

[0033] Such as figure 1 As shown, this embodiment includes two stages of implementation:

[0034] 1) First, place a blank 4 with a thickness of 1.2mm on image 3 In the high-rib forming mold shown, the blank 4 is pressed together with the left high-rib slide block 1, the right high-rib slide block 2 and the first and second high-rib dies 3 and 6. Subsequently, the high-rib punch 5 moves upwards, while the left high-rib slider 1 and the first high-rib die 3 move to the right, and the right high-rib slider 2 and the second high-rib die 6 move to the left. The relative movement of the metal material on both sides of the blank 4 is fed to the middle area, and the high-rib forming is completed while avoiding the local thickness reduction of the high-rib punch 5 when the high-rib punch 5 moves upward to bend the blank.

[0035] The sum of the moving distances of the left high-rib slider 1 and the right high-rib slider 2 is equal to the difference between the length of the high-ri...

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Abstract

The invention provides a composite bending and forming process for non-equal-height cross-shaped rib type pieces. The composite bending and forming process comprises the following steps: sequentially carrying out high rib formation and then carrying out short rib formation. A cross-shaped rib crossed region is prevented from being thinned by two steps of the process in sequence. High and short ribs and the crossed region are formed by the matched movement of different slide blocks, an ejection block, a convex die and a concave die, so that the disadvantages caused by the fact that a traditional plastic forming process is used for the non-equal-height cross-shaped rib type pieces can be effectively solved, and the forming force is smaller and the service life of the die is long.

Description

technical field [0001] The invention relates to a technology in the field of material forming, in particular to a compound bending forming process for non-equal-height cross bars. Background technique [0002] Under the current increasingly urgent demand for lightweight structures, energy saving and consumption reduction, many parts are designed as thin webs with vertical and horizontal internal rib structures to reduce the weight without losing the functionality of the parts. There are many types of ribbed film members, and they are widely used in high-tech fields such as aviation, ships, and rockets. Different fields have different requirements for the performance of parts, and there are also various processing methods and processes, but they all require that the parts should not be seriously thinned. [0003] The use of traditional casting and welding processes has low material utilization, high processing costs, and poor mechanical properties of the product. Although pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D13/02B21D37/10B21D43/00
Inventor 庄新村柏杨赵震向华方勇勇
Owner SHANGHAI JIAO TONG UNIV
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