Forming device and method for high-precision hollow component

A hollow component, high-precision technology, applied in the direction of forming tools, hollow objects, and other household appliances, to achieve the effects of eliminating inhibition, improving mechanical properties, and ensuring uniform wall thickness

Inactive Publication Date: 2014-08-27
HARBIN INST OF TECH AT WEIHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to address the above-mentioned defects in the prior art, and provide a high-precision hollow member forming device and method. By setting an anti-deformation mechanism in the mold, the repeated and cumulative utilization of the petal shape can be realized, and the fixed friction

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  • Forming device and method for high-precision hollow component
  • Forming device and method for high-precision hollow component
  • Forming device and method for high-precision hollow component

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Embodiment Construction

[0041] A method for forming a high-precision hollow member, the technical solution of which is to include the following steps:

[0042] Step 1: Die preparation, first design the corresponding lower die 2, upper die 5, left punch 4 and right punch 7 according to the shape of the component, the above is the same as the prior art, and will not be repeated here. The lower mold 2 is connected to the lower workbench 1 of the press, the upper mold 5 is connected to the upper slider 6 of the press, and a check valve 17 is installed between the left punch 4 and the high pressure source 16;

[0043] Step 2: Install the anti-deformation mechanism 9, 11, 13, 15 on the mold, one end of the anti-deformation mechanism faces the mold cavity, and the other end extends out of the mold cavity, and is connected with the ejection mechanism 8, 10, 12, 14 of the press . The main point is the width of the anti-deformation mechanism a 1 about 0.1 a ~0.3 a , b 1 about 0.1 b ~0.3 b ,length l1 ...

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Abstract

The invention relates to a forming device and method for a precise hollow component with a rectangular section. The forming method includes that step 1, preparing a die, mounting an anti-deformation structure on the die, and mounting a check valve at a punch; step 2, placing an initial tube blank in a die cavity, closing the die and sealing the ends; step 3, filling the tube blank with fluid medium; step 4, enabling the anti-deformation mechanism to move in the opposite direction to form a micro-pedal shape; step 5, enabling the anti-deformation structure to return to the initial position to flat the concave part of the pedal shape; repeating the steps 4 and 5 to form the needed shape; relieving the inside fluid pressure, and opening the die to take out the component. According to the forming method for the high-precision hollow component, the die is provided with the anti-deformation mechanism to achieve the repeated and accumulative use of the pedal shape, the friction rolling effect is eliminated, the forming pressure is lowered, the disadvantage of break is avoided, the wall thickness uniformity is improved, and accordingly the high-precision requirements for the dimension precision and wall thickness uniformity of the high-precision hollow component used for the aerospace and other fields are satisfied.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a high-precision hollow member forming device and method. Background technique [0002] At present, the rectangular section hollow member is an ideal load-bearing structure form. For bending and torsional loads, the rectangular section hollow member has the least failure mode, which can effectively balance the strength and stability failure problems, and then obtain the maximum ultimate bending and shear resistance. Bearing capacity, therefore, hollow members with rectangular cross-sections are important structural forms of aviation, aerospace and automotive equipment. [0003] In the current manufacturing process of rectangular cross-section hollow members, it is generally formed by stamping-welding and direct forming by internal high pressure. The first method introduces two longitudinal welds, which destroys the integrity of the structure and causes welding thermal ...

Claims

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Application Information

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IPC IPC(8): B21D26/047B21D51/00B21D37/12
CPCB21D26/033B21D26/047
Inventor 初冠南贾彬彬陈钢王凯殷康康胡琳琳王一杰于小燕
Owner HARBIN INST OF TECH AT WEIHAI
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