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Coreless spinning machining method for large-scale multi-variable-diameter hollow shaft

A processing method and hollow shaft technology, applied in the field of spinning, can solve the problems of difficult processing of multiple variable diameter hollow shafts, low reduction of machining allowances, poor forming quality, etc., so as to eliminate the uneven force on the workpiece. , reduce processing costs and achieve the effect of light weight

Active Publication Date: 2019-12-10
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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  • Coreless spinning machining method for large-scale multi-variable-diameter hollow shaft
  • Coreless spinning machining method for large-scale multi-variable-diameter hollow shaft
  • Coreless spinning machining method for large-scale multi-variable-diameter hollow shaft

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Embodiment 1

[0049] Such as figure 1 Shown is the hollow shaft 100 that needs to be processed and formed in this embodiment, 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 120 and the main body section 110 have a plurality of reduced-diameter sections with gradually increasing outer diameter transitions, specifically including the first reduced-diameter section 121 and the second reduced-diameter section 122 extending from the thin-diameter section 120 to the main body section 110 in sequence 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 as a whole between each diameter reduction section, specifically as ...

Embodiment 2

[0063] The coreless spinning processing method of a large-scale multiple-diameter hollow shaft in this embodiment is basically the same as that in Embodiment 1. Furthermore, the vertical spinning system used in this embodiment includes The lower mold unit 500, and the rotary wheel installation unit 700 arranged on both sides of the lower mold unit 500, such as figure 2 As shown, an upper mold unit 600 is also arranged above the lower mold unit 500, wherein a coarse rotary wheel 200 and a shaping rotary wheel 400 are installed on the rotary wheel installation unit 700 on one side, and a rotary wheel installation unit 700 on the other side is installed with The positions of the fine turning wheel 300 and the shaping wheel 400, the rough turning wheel 200 and the fine turning wheel 300 are corresponding, and the positions of the shaping wheels 400 on both sides are corresponding. When in use, the workpiece is clamped in the lower mold unit 500 and the lower mold unit 500 drives ...

Embodiment 3

[0067] The coreless spinning processing method of a large-scale multiple-diameter hollow shaft in this embodiment is basically the same as the above-mentioned embodiment 2, and further, as Figure 8 As shown, the spinning wheel installation unit 700 in this embodiment includes a stand seat 701, and the upper and lower ends of the stand seat 701 are respectively provided with mounting plates 702, and the spinning wheel is arranged between the mounting plates 702 at both ends. Specifically, A wheel shaft 710 is arranged between the mounting plates 702 at both ends, and the ends of the wheel shaft 710 pass through the mounting plate 702 and are fastened by nuts at both ends. The middle part of 710 is provided with a wheel seat 720, and the bottom of the wheel seat 720 is provided with a circle of supporting ring segments along the axial direction. Bolts are used to fasten the spinning wheel on the supporting ring segment. The outer side of the wheel seat 720 is also provided wit...

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Abstract

The invention discloses a coreless spinning machining method for a large-scale multi-variable-diameter hollow shaft, and belongs to the field of spinning. The method comprises the following steps thatS1, a vertical spinning system is adopted, a blank is clamped in a lower die unit, the lower die unit drives a workpiece to rotate, rough spinning wheels and fine spinning wheels on the two sides ofthe workpiece simultaneously make contact with a workpiece to carry out dislocation spinning, and a point contact is used for carrying out curve reciprocating feeding spinning to form a rough spinningblank; S2, shifting the rough spinning wheels and the fine spinning wheels, enabling shaping rotary wheels on the two sides of the workpiece to be in contact with the workpiece for shaping and spinning, and carrying out wire contact shaping and finish on the shaping rotary wheels on the two sides only in the radial direction, so as to obtain a fine spinning blank; and S3, correspondingly carryingout spinning machining on the workpiece to be machined according to the above mode to obtain a rough blank. The method overcomes the problems that the hollow shaft is high in machining difficulty andpoor in forming quality in the prior art, the prepared product is high in precision, the subsequent machining allowance can be reduced to a great extent, the material utilization rate is high, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a coreless spinning processing method for a large-scale hollow shaft with multiple diameter reductions. 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 mileage, and have achieved good results. The market development potential of new energy vehicles is undoubtedly huge. New The energy vehicle industry has increasingly stringent requirements on the weight and quality of internal parts of the car 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 attracted more and more attention. The manufacture of variable-diameter hollow long-shaft workpieces in the industry mainly in...

Claims

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Application Information

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Patent Type & Authority Applications(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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