Forming device for two-end-fixed type foil of radial elastic foil bearing
A technology of elastic foils and forming devices, which is applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of foil rubbing, good resilience, plastic deformation, etc., and achieve a large number of pressed foils and low processing costs low cost and easy operation
Inactive Publication Date: 2015-03-25
XI AN JIAOTONG UNIV
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Problems solved by technology
But it will cause another problem: after the rotor rotates, it is easy to rub the foil out of the fixed end, making the bearing invalid
Because the foil material has good resilience and is prone to plastic deformation locally, there is currently no forming device for the top foil of the elastic foil bearing with both ends fixed
Method used
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0020] refer to figure 1 , figure 2 with image 3 , a forming device for the top foil of the two-end fixed elastic foil bearing, comprising a first forming block 1 and a second forming block 2, and the foil 5 is sandwiched between the first forming block 1 and the second forming block 2, The first forming block 1 and the second forming block 2 are connected by two positioning pre-tightening staples 3 and four sets of bolt groups 4 .
[0021] refer to figure 2 , image 3 with Figure 4 , the first molding block 1 and the second molding block 2 are provided with an arc 7 of the same radian, one end of the arc 7 is a tip groove 8 with a radius of 0.12mm, and the other end is smooth, and the foil 5 is placed in the tip groove 8, a through groove 9 with a height of 2 mm is opened in the middle of the two ends of the first forming block 1 and the second forming blo...
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Abstract
A forming device for two-end-fixed type foil of a radial elastic foil bearing comprises two forming blocks, the foil is clamped between the two forming blocks, the two forming blocks are connected through two positioning pre-tightening staple bolts and four bolt sets, and one or more other forming blocks the same as the forming block in structure are connected to one forming block. According to the foil forming technology, the first forming block, the second forming block and the foil are fixedly clamped through forming block through holes with the four bolt sets, then the whole device is put into a vacuum furnace to be heated and treated, and then manufacturing of the foil is completed; the other forming blocks the same as the forming block in structure can be connected to the second forming block, and namely a plurality of pieces of foil can be formed. The device has the advantages of being easy to manufacture, low in machining cost and convenient to operate and can press the great deal of foil, and the forming technology is simple.
Description
technical field [0001] The invention belongs to the technical field of elastic foil bearings, and in particular relates to a forming device for a top layer foil of a two-end fixed radial elastic foil bearing. Background technique [0002] Elastomeric foil bearings are suitable for the support of oil-free, high-speed or ultra-high-speed rotating machinery. For radial elastic foil bearings, when one end is fixed and the other end is free, it will facilitate the assembly of the foil. But it creates another problem: the rotor tends to rub the foil off the fixed end after spinning, making the bearing fail. A better solution is: both ends of the foil are fixed, that is, both ends of the foil are stuck in the bearing sleeve, so as to avoid the above problems. When fixed at both ends, the foil needs to be preformed to match the inner diameter of the bearing sleeve, making assembly easy. Because the foil material has good resilience and is prone to plastic deformation locally, the...
Claims
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IPC IPC(8): B21D5/01B21D33/00B21D37/16B21D53/10
CPCB21D33/00
Inventor 孙岩桦程文杰贾修建刘中华虞烈
Owner XI AN JIAOTONG UNIV