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GB/T 30570-2014Structural main factors of sheet metal stamping parts (English PDF)

金属冷冲压件结构要素

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 6, 2014

Implementation date

December 1, 2014

Scope

GB/T 30570-2014 is the English-translated version of 金属冷冲压件结构要素.

GB/T 30570-2014 is the Chinese standard "Structural main factors of sheet metal stamping parts". Its scope clause reads: This standard specifies the cold metal punching, bending, deep drawing and structural elements turn fitting process limitations and common data.

This standard applies to the general structure of cold stamping. This standard does not apply to cold stamping and fine blanking member special structure. Its clauses include cold metal stamping structural elements.

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Document preview — GB/T 30570-2014

National Standard of the People's Republic of China

ICS: 25.020
Classification: J 32

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 cold metal stamping structural elements
3.1 General principles
3.2 blanking part structural elements

1 Scope

This standard specifies the cold metal punching, bending, deep drawing and structural elements turn fitting process limitations and common data.

This standard applies to the general structure of cold stamping.

This standard does not apply to cold stamping and fine blanking member special structure.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

JB/T 5109-2001 Sheet Metal Bending Process Design Specification

3 cold metal stamping structural elements

3.1 General principles

3.1.1

Cold stamping design should be reasonable shape to be as simple as possible, the rules of symmetry and to save raw materials and reduce the manufacturing process, improve the mold life

Life, reduce job cost.

3.1.2

cold stamping of complex shapes can be considered divided into several simple stamping and then made the connection method.

3.1.3

The structure size limits given are determined according to the workpiece quality and economic efficiency.

3.2 blanking part structural elements

3.2.1 radius

Using a punching mold punching finished, its shape and the hole should avoid sharp corners clear, there should be an appropriate fillet. Usually fillet half

Radius R greater than or equal 0.5 times the thickness t, i.e. R>=0.5t (see Figure 1).

figure 1

3.2.2 punching size

Preferred circular. The minimum size and shape punching holes, the mechanical properties of the material and material thickness t about, no protective sleeve punch punching

The diameter d or a rim width specified in Table 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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