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A method for forming plate-like parts with thin bottom and thick outer edge

A technology with outer edge and thin bottom, which is applied in vehicle parts, transportation and packaging, etc., can solve the problems of low production efficiency, poor mechanical properties and overall mechanical properties, high production cost, etc., achieve low equipment requirements, improve production efficiency and use The effect of less life and fewer forming passes

Active Publication Date: 2019-05-28
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a forming method for thin-bottomed and thick-rimmed plate-shaped parts, in order to solve the problems of low production efficiency, high production cost, and The problem of poor mechanical properties and overall mechanical properties

Method used

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  • A method for forming plate-like parts with thin bottom and thick outer edge
  • A method for forming plate-like parts with thin bottom and thick outer edge
  • A method for forming plate-like parts with thin bottom and thick outer edge

Examples

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Embodiment 1

[0047] The integral spinning forming method is adopted for the dual-mass flywheel drive toothed plate 25 for an automobile, and the initial sheet material with a thickness of 3 mm is passed through the spinning forming process to form a dual-mass flywheel drive toothed plate 25 with an outer edge thickness of 10.5 mm, specifically including The following steps:

[0048] (1) Blanking: cutting and blanking the incoming plate with a thickness of 3 mm to obtain a circular blanking part 1;

[0049] (2) Punch center positioning hole: carry out punching 2 (hole diameter is 40mm) to the blanking part center, make the punching part 3 with center positioning hole 2;

[0050] (3) flanging: flanging the peripheral edge of the punching part to obtain a flanging part 4 whose outer edge is a inferior arc shape;

[0051] (4) Thickening by turning: install the first mandrel on the turntable of the spinning machine, the mandrel rotation speed is 300r / min, and the flanging part 4 is coaxially i...

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Abstract

The invention discloses a molding method of a thin-bottom thick-periphery sheet-metal disc type component. The molding method comprises the following steps of blanking; punching of a central locatinghole; flanging; spinning and bending for thickening, wherein a spinning and bending wheel and a spinning and flattening wheel are mounted at the two sides of the periphery of a flanged component correspondingly, a spinning machine is started, so that a first core mold drives the flanged component to rotate along with the spinning machine, meanwhile, the spinning and bending wheel feeds horizontally in the radial direction close to the flanged component, an arc-shaped groove of the spinning and bending wheel gradually presses toward the periphery of the flanged component, and the periphery of the flanged component is thickened, so that a thickened periphery is formed and a spinning and bending thickened component are obtained; spinning and flattening for thickening, wherein the spinning andflattening wheel is made to feed horizontally in the radial direction close to the spinning and bending thickened component, and a cylindrical surface of the spinning and flattening wheel gradually presses the thickened periphery of the spinning and bending thickened component, so that a flat and straight periphery is formed by the thickened periphery and a spinning and flattening thickened component is obtained, wherein the flat and straight periphery is perpendicular to a base plate of the spinning and bending thickened component and is uniform in thickness; and spinning for upsetting and reshaping. The molding method has the beneficial effects that the number of molding passes is small; and it can be guaranteed that the molded disc type component is high in molding precision.

Description

technical field [0001] The invention relates to the technical field of processing methods for auto parts, in particular to a method for forming disc-like parts made of sheet metal with thin bottom and thick outer edge. Background technique [0002] Disc parts mainly play the role of transmission, connection, support and sealing in the automotive field, such as sprockets, flanges, various end covers, etc. For some rotary disk parts with thin bottom and thick outer edge (usually the thickness of the outer edge is 3 to 5 times the thickness of the plate), the traditional processing technology is tailor welding forming, casting forming and forging machining. The material utilization rate and production efficiency of tailor-welded forming are low, and the performance of welding heat-affected zone is reduced, which greatly reduces the overall mechanical properties of parts; common defects of cast-formed parts include pores, shrinkage porosity, cracks, etc. Plastic forming parts a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D35/00B21D22/16B21D53/88
CPCB21D22/16B21D35/001B21D35/002B21D53/88
Inventor 薛克敏唐季平杨卫正代光旭周敏
Owner HEFEI UNIV OF TECH
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