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Stepping coordinated thin-plate fine blanking method

A fine blanking and coordinated technology, applied in the field of fine blanking technology, can solve problems such as not being suitable for machine tools, and achieve the effects of easy installation and debugging, reduced equipment investment, and reduced manufacturing costs

Inactive Publication Date: 2011-06-15
戴赞荣 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the blanking surface of thin plate parts is generally not suitable for processing by machine tools

Method used

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  • Stepping coordinated thin-plate fine blanking method
  • Stepping coordinated thin-plate fine blanking method
  • Stepping coordinated thin-plate fine blanking method

Examples

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Embodiment Construction

[0035] The step-by-step coordinated thin plate precision blanking method provided by the embodiment of the present invention includes the following steps: figure 1 As shown, step 1) the mold is opened, and the thin plate material is fed in, (the precision blanking device includes a punch 1, a die 2, a blank holder ring gear 3, a top piece 4 and a thin plate material 5;

[0036] Such as figure 2 and image 3As shown, step 1) the mold is closed, the ring gear is first pressed into the thin plate material by 0.01-0.03mm, the ejector supports the thin plate material, and then the punch is pressed into the thin plate material with the same stroke, keeping the ring gear and the punch at the same position (put the ring gear The compression, the back pressure of the ejector and the initial pressure of the punch are divided into two steps, and the time difference is only 0.5 to 1 millisecond. The role of burrs on the punching surface. The ring gear continues to increase the pressure...

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Abstract

The invention provides a stepping coordinated thin-plate fine blanking method. The method comprises the following steps: 1) closing the die, firstly pressing the toothed ring into a thin plate material (0.01mm to 0.03mm) and supporting the thin plate material by a fixture, and then pressing the male die into the thin plate material in the same stroke and keeping the toothed ring and the male die in the same position; 2) further pressing the male die and the toothed ring into the thin plate material at different speeds, wherein the press stroke of the male die is larger than that of the toothed ring, and stopping pressing until the press stroke of the male die reaches 1 / 4 to 1 / 3 thickness of the thin plate material; and 3) further pressing the toothed ring and the male die synchronously into the thin plate material until the male die reaches the position of the remaining 1 / 3 to 1 / 5 thickness of the thin plate material.

Description

technical field [0001] The invention relates to a fine blanking process, in particular to a step-by-step coordinated thin plate fine blanking method. Background technique [0002] Fine blanking of sheet metal is the result of the successful application of Theodor Karman's theory. The core of the theory is that solids have better plasticity, better deformation state and easier deformation under multi-directional compression than under unidirectional compression. In the fine blanking of sheet metal, the special structure of the fine punching die is used to apply three-dimensional pressure in the shear separation area of ​​the sheet to form a three-dimensional compressive stress state, and the material is purely sheared and separated to achieve fine blanking. The German F. Schiess invented the powerful blanking fine blanking technology (referred to as FB fine blanking) based on this theory in 1921, and obtained the German patent on March 9, 1923. [0003] The development and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D28/02B21D28/16B21D28/14
Inventor 戴赞荣陈启东
Owner 戴赞荣