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Electromagnetic side pressing drawing test device and method

A test device, test method technology

Pending Publication Date: 2018-08-31
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The theoretical analysis method often needs to simplify the structure of the device, which may easily lead to inaccurate calculation results
The numerical simulation method also often needs to simplify the structure of the device and the input parameter curve is not accurate enough, which will also cause inaccurate simulation results

Method used

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  • Electromagnetic side pressing drawing test device and method
  • Electromagnetic side pressing drawing test device and method
  • Electromagnetic side pressing drawing test device and method

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Embodiment Construction

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention will now be described with reference to the accompanying drawings, but it is only a preferred embodiment and is not used to limit the essential scope of the present invention.

[0037] figure 1 It is a sectional view of the electromagnetic blank-holding deep-drawing device of the present invention, and the electromagnetic blank-holding deep-drawing device comprises a punch 1, a blank-holding ring 2, a magnetic force ring 3, an excitation coil 4, a fixed ring 5, a die 6, and a cylindrical head Hexagon screw 7, cylinder head hexagon socket screw 8, spacer 9, fixed block 10, pressure plate 11, bottom plate 12, spacer 13, cylinder head hexagon socket head screw 14, cylinder helical compression spring 15, pusher plate 16, inside cylinder head Hexagonal screw 17, hexagon socket head cap screw 18; Described elec...

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Abstract

The invention discloses an electromagnetic side pressing drawing test device and method. The device comprises a positioning and fastening mechanism, an electromagnetic side pressing drawing device, anelectromagnetic force calibration device and the corresponding test method. The positioning and fastening mechanism is composed of a fixing block, a pressing plate, a cushion block and a bottom plate, a female mold and a fixing ring are fastened on the device bottom plate through screws, a spring ejector part mechanism is arranged in an annular groove in the upper portion of the female mold, a magnet exciting coil is wound in a groove of a fixing ring, and a corresponding power source and a corresponding controller are matched; an annular groove is machined in a magnetic force ring and is matched with a side pressing ring to form a whole body; the magnetic force ring and a calibration block are in thread fit; a male mold and a calibration block handle are fastened on an upper mold base through a screw. Through the electromagnetic side pressing drawing test device, adjustable electromagnetic force can be output, through a given calibration method, an electromagnetic force and current strength curve can be obtained, through the test, the given drawing part optimal side pressing force curve can be obtained, and the influence of the board diameter on the limiting drawing coefficient of a given drawing part can be obtained.

Description

technical field [0001] The invention relates to an electromagnetic crimping deep drawing test device and a test method, in particular to an electromagnetic crimp deep drawing test device suitable for sheet metal deep drawing. Background technique [0002] In the deep drawing process of sheet metal, the outer edge of the blank flange is prone to wrinkling due to the large tangential compressive stress, and it is often necessary to apply blank holder force to the flange part to suppress the occurrence of wrinkling. Traditional blank holders are divided into two categories: mechanical and hydraulic. Mechanical blank holders generally use springs, rubber pads and nitrogen cylinders, while hydraulic blank holders are often pressed by the liquid pressure generated by the piston. The blank-holding force provided by the traditional blank-holding device generally cannot be adjusted flexibly and tends to increase. In order to solve the defects of the traditional blank-holding method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/22B21D37/12B21C51/00
CPCB21C51/00B21D22/22B21D37/12
Inventor 王强李昊何芳郑娅云
Owner UNIV OF JINAN
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