Making process and mold for punched metal plate piece with stepped section

A sheet metal and step technology, which is applied in the manufacture of sheet metal step section blanking parts and the field of molds, can solve problems such as low efficiency, difficult processing, difficulty, complexity and high cost, and achieve production problems and production High efficiency and improved flatness

Inactive Publication Date: 2007-06-06
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the prior art, the processing of the step section (outer end or inner wall section step) of the sheet metal is generally manufactured by cutting methods such as milling and drilling, and its difficulty, complexity and cost are very high. Large, the efficiency is also very low, and it is even difficult to process
So far, there has not been a method for producing parts with stepped cross-sections based on stamping or cold forging for sheet metal materials

Method used

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  • Making process and mold for punched metal plate piece with stepped section
  • Making process and mold for punched metal plate piece with stepped section
  • Making process and mold for punched metal plate piece with stepped section

Examples

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Embodiment 1

[0027] This embodiment is a blanking part in the manufacturing method of the present invention. The actual material thickness of the workpiece is t=2.75mm. its D 1 =47.7mm, D 2 =45.7mm, take punching gap C=0.08t, see Figure 2. The design of the auxiliary blanking die is basically the same as that of the ordinary blanking die, the only difference is that the concave die is designed as a step shape, where the height of the step is h′=3.0mm, and the shape and size of the blanking part of the step section obtained are shown in the figure 3.

[0028] In this embodiment, workpieces with three different step heights of h=1.5, h=1.0 and h=0.5mm can be obtained respectively by controlling the bottom dead center position of the stamping equipment.

Embodiment 2

[0030] This embodiment is a punching part in the manufacturing method of the present invention. The actual material thickness of the workpiece is t=2.75mm. its d 1 = 47.5mm, d 2 =45.5mm, take punching gap C=0.08t, see Figure 5. The design of the auxiliary punching die is basically the same as that of the ordinary punching die, the only difference is that the punch is designed as a step, where the height of the step is h′=3.0mm, and the shape and size of the punching part obtained from the step section are shown in the figure As shown in 6, a workpiece with a workpiece step height h = 1.5 mm was obtained.

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Abstract

The present invention is making process and mold for punching metal plate piece with stepped section. The mold includes female mold and corresponding punch head, one of which has stepped edge in the step height greater than that in the workpiece. The blanking clearance is 2-10 % of the material thickness, and the lower dead point position is regulated to control the height of the step in the workpiece. The present invention has high production efficiency, simple punch operation and low cost.

Description

technical field [0001] The invention belongs to the technical field of stamping separation and cold forging forming in metal plastic processing in mechanical manufacturing, and relates to a processing technology and a mold structure of flat parts of hardware materials. Background technique [0002] As we all know, in modern manufacturing, various stepped shaft parts and stepped plate parts are manufactured from bar metal mainly through cutting, forging, welding and other technologies. It is theoretically possible to process a stepped shape on the thickness of a flat material part with these methods, but the practical value is almost zero. [0003] Because sheet metal mainly manufactures various product parts through stamping processing. Among them, the hollow three-dimensional parts are realized through forming processes, and the flat parts are realized through separation processes, and step-shaped parts with thick cross-sections cannot be obtained in such processes. [00...

Claims

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Application Information

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IPC IPC(8): B21D28/14B21D28/34B21D28/02B21D28/26
Inventor 卢险峰李湖峰章跃荣周勇
Owner NANCHANG UNIV
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