Die for spinning and casting aluminum alloy wheel

A technology for casting aluminum alloys and molds, which is applied in the direction of manufacturing tools, forming tools, metal processing equipment, etc., can solve the problems that the length of the heating rod should not be too long, the blank has changes, and the heating efficiency has decreased, so as to prevent the failure to return smoothly, The effect of solving the inconsistent inner diameter and reducing the processing time

Inactive Publication Date: 2015-05-06
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The center hole of the blank after spinning with a seal layer cannot be machined, resulting in that the center of the blank cannot be pressed, and the size of the blank after spinning will change accordingly, which affects the yield of machining
[0006] (2) In order to save cost and improve processing efficiency, the existing spinning processing method is to directly spin the die-casting blank after it comes off the production line. It is guaranteed that the blanks of the same type of different molds are all bonded to the mold, but the connection method between the guide block and the spinning die in the existing mold design method leads to deviations in the installation of the guide block, which is not conducive to the smooth expansion of the live block. Inconvenient to disassemble
[0007] (3) Use the heating rod to heat the existing mold. The current structure of the mold prevents the length of the heating rod from being too long, which leads to a decrease in heating efficiency and affects the spinning cycle
[0008] (4) The end face of the wheel is not flat after spinning, which affects the heat treatment of the blank

Method used

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  • Die for spinning and casting aluminum alloy wheel
  • Die for spinning and casting aluminum alloy wheel
  • Die for spinning and casting aluminum alloy wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A mold lower mold for spin casting aluminum alloy wheels, the lower mold further includes a platform below the mold position corresponding to the edge of the wheel rim. Carry out the processing of lower mold platform according to the parameter shown in table 1:

[0034] Table 1: Processing parameters of the lower mold platform of the mold for spinning cast aluminum alloy wheels

[0035]

[0036] The test proves that the lower mold also includes a platform under the mold position corresponding to the edge of the rim to prevent the uneven end surface of the wheel after spinning and affect the heat treatment of the blank. The test in the pilot production line shows that compared with no platform, Groups 1-4 can reduce the scrap rate caused by uneven end faces by more than 65%, bringing unexpected excellent results. Among them, group 2 reduced the scrap rate caused by uneven end faces by 83%.

Embodiment 2

[0038] A mold lower mold for spin casting aluminum alloy wheels, the lower mold includes a backing plate 25, a guide block 26 and a loose block 27 at the wheel well, and the backing plate 25 is fixed to the bottom mold 21 by bolts 24, and the guide block 26 It is fixed to the backing plate 25 by bolts 212 .

[0039] Carry out the processing of lower mold according to the parameter shown in table 2:

[0040] Table 2: Processing parameters of the lower mold platform of the mold for spinning cast aluminum alloy wheels

[0041] Group No

[0042] The test in the pilot production line shows that the connection between the block and the new lower die, adding a backing plate, adjusted the matching gap between it and the loose block, making the loose block easier to install and position and expand smoothly. Through the connection between the guide block and the new lower die, adding a backing plate can effectively solve the effective expansion of the slider, solve the probl...

Embodiment 3

[0044] A mold lower mold for spin casting aluminum alloy wheels, the lower mold includes an induction heater and does not include a heating rod. At the same time, a lower mold ejector 28 is also included in the lower mold, and the lower mold ejector 28 is connected to the lower mold main body 21 by bolts 23 .

[0045] The test in the pilot production line shows that by removing the heating rod of the lower mold, the mold processing time is reduced and the production efficiency is improved. Compared with the original production time of the lower mold, after changing to the induction heater, the mold processing time is reduced by 27%, and the work efficiency is significantly improved.

[0046] At the same time, the induction heating method overcomes the uneven heating of the original heating rod. When the lower mold heated by induction heating is used in the pilot production line, the number of defective parts of the wheel is reduced by 25.2%, which brings great economic and so...

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Abstract

The invention relates to a lower die of a die for spinning and casting an aluminum alloy wheel. The lower die is characterized in that the lower die further comprises a platform which is arranged below a die position corresponding to the wheel rim. The lower die is additionally provided with the platform, so that the problem that thermal processing on a blank is influenced due to unevenness of the back end surface of the wheel after being spun and cast is prevented.

Description

technical field [0001] The invention relates to the field of spinning casting, in particular to a casting aluminum alloy wheel spinning die. Background technique [0002] As one of the important components in the driving system of a car, the wheel hub not only carries the weight of the car, but also reflects the appearance of the car. Cast spinning aluminum alloy wheel (referred to as "cast spinning wheel") is a kind of aluminum alloy wheel whose spokes are formed by low-pressure casting process and rim is formed by powerful spinning process. Low-pressure casting can meet the appearance requirements, and the rim is formed by hot spinning, with obvious fiber streamlines in the structure, which greatly improves the overall strength and corrosion resistance of the wheel. Due to the high strength of the material and the light weight of the product, the service life and safety of the wheel are greatly improved, which is beneficial to the weight reduction and fuel saving of the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/16B21D22/14
CPCB21D37/10B21D22/14
Inventor 常海平翁涛张金许大维李瑞于德美王永宁朱志华李昌海
Owner CITIC DICASTAL
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