A coreless spinning processing method of a large-scale multiple-diameter variable hollow shaft

A processing method and hollow shaft technology, applied in the field of spinning, can solve the problems of high cost, low machining allowance, poor forming quality, etc.

Active Publication Date: 2020-07-07
芜湖西诺普汽车零部件科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of high difficulty in processing and poor molding quality of hollow shafts with multiple variable diameters in the prior art, and to provide a coreless spinning processing method for large-scale multiple variable diameter hollow shafts. The spinning processing method helps to overcome the defects of low processing efficiency, high cost, and low strength of the traditional process, and the products prepared by this method have high precision, which can greatly reduce the subsequent processing allowance, and the material utilization rate is high. Reduced production cost, suitable for popularization and application

Method used

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  • A coreless spinning processing method of a large-scale multiple-diameter variable hollow shaft
  • A coreless spinning processing method of a large-scale multiple-diameter variable hollow shaft
  • A coreless spinning processing method of a large-scale multiple-diameter variable hollow shaft

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Effect test

Embodiment 1

[0049] like figure 1 The hollow shaft 100 to be processed and formed in this embodiment is shown, including a hollow body section 110. One end of the body section 110 is a thin-diameter section 120 with a significantly reduced inner diameter. The thin-diameter section 120 extends for a certain length, and the thin-diameter section Between 120 and the body segment 110 are a plurality of diameter-reducing segments whose outer diameters gradually increase and transition, specifically including a first diameter-reducing segment 121 and a second diameter-reducing segment 122 extending from the thin-diameter segment 120 to the body segments 110 in turn. and the third diameter reduction section 123, each diameter reduction section is an arc-shaped smooth transition section, and a straight extension section is connected between each diameter reduction section, and a step surface distribution is formed between the diameter reduction sections as a whole. figure 1 As shown, the other end...

Embodiment 2

[0063] A coreless spinning processing method for a large-scale multiple variable diameter hollow shaft in this embodiment is basically the same as that in Embodiment 1. Further, the vertical spinning system applied in this embodiment includes a method for clamping workpieces. The lower die unit 500, and the rotary wheel mounting units 700 arranged on both sides of the lower die unit 500. figure 2 As shown, an upper die unit 600 is also provided above the lower die unit 500, wherein the coarse rotary wheel 200 and the shaping rotary wheel 400 are installed on the rotary wheel installation unit 700 on one side, and the rotary wheel installation unit 700 on the other side is installed with The positions of the fine spinning wheel 300 and the shaping spinning wheel 400 , the positions of the coarse spinning wheel 200 and the fine spinning wheel 300 are corresponding, and the positions of the shaping spinning wheels 400 on both sides are corresponding. When in use, the workpiece i...

Embodiment 3

[0067] A coreless spinning processing method for a large-scale, multiple-variable-diameter hollow shaft in this embodiment is basically the same as the above-mentioned Embodiment 2, and further, such as Figure 8 As shown, in this embodiment, the rotating wheel installation unit 700 includes a stand 701, and the upper and lower ends of the stand 701 are respectively provided with mounting plates 702, and the spinning wheel is arranged between the two ends of the mounting plates 702. Specifically, A rotating wheel shaft 710 is arranged between the mounting plates 702 at both ends. The end of the rotating wheel shaft 710 passes through the mounting plate 702 and is fastened by nuts at both ends, and a shaft sleeve 711 is also provided between the rotating wheel shaft 710 and the mounting plate 702. The center of 710 is provided with a wheel base 720, and the bottom of the wheel base 720 is provided with a ring of support ring segments in the axial direction. Bolts are used to fa...

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Abstract

The invention discloses a coreless spinning processing method for a large-scale multiple-diameter variable hollow shaft, which belongs to the field of spinning. The present invention includes the following steps: S1. Using a vertical spinning system, the blank is clamped in the lower mold unit, and the lower mold unit drives the workpiece to rotate, and the rough spinning wheel and the fine spinning wheel on both sides of the workpiece contact the workpiece at the same time for staggered spinning , and perform curve back-and-forth feeding spinning with point contact to form a rough spinning blank; S2, shift the rough spinning wheel and fine spinning wheel, and the shaping spinning wheels on both sides of the workpiece contact the workpiece for shaping and spinning, and the shaping on both sides The rotary wheel only carries out line contact shaping and fine spinning along the radial direction, so as to obtain the fine spinning blank; S3, according to the above method, carry out spinning processing on the workpiece to be processed respectively, and obtain the rough blank. The invention overcomes the problems of high processing difficulty and poor molding quality of the hollow shaft in the prior art, and the prepared product has high precision, can greatly reduce subsequent processing allowance, has high material utilization rate, and reduces production cost.

Description

technical field [0001] The invention relates to the technical field of spinning, and more particularly, to a coreless spinning processing method for a large-scale, multiple-variable-diameter hollow shaft. Background technique [0002] New energy vehicles are an inevitable trend in the development of automobiles in the world today. Countries are competing to develop various types of high-density batteries or other power sources, continuously increasing the cruising range, and have made great achievements. The market development potential of new energy vehicles is undoubtedly huge. The energy vehicle industry has more and more stringent requirements on the weight and quality of internal parts of the vehicle body. At present, the design of hollow axles is widely used in new energy vehicles, especially the application of variable-diameter long-shaft hollow shafts has received more and more attention. The manufacture of variable-diameter hollow long-shaft workpieces in the indust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/16
CPCB21D22/16B21D22/14
Inventor 王其善方成黄菲
Owner 芜湖西诺普汽车零部件科技有限公司
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