Machining method for special-shaped part

A part processing and special-shaped technology, which is applied in the field of mechanical parts production, can solve problems such as inability to achieve stamping effects and material cracking, and achieve the effect of reducing the difficulty of demoulding and avoiding cracking

Inactive Publication Date: 2017-01-04
苏州中佳精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For some special parts, when the deformation required by stamping is close to or exceeds the limit of material deformation, the general stamping process may cause the material to crack during the forming process, so that the expected stamping effect cannot be achieved
At present, there is no processing method for producing special-shaped parts by stamping that can fully utilize the deformation limit of the material without cracking the material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Production method of ring-shaped special-shaped parts 1.

[0020] First, the raw material is processed by the blanking die to form a ring-shaped rough billet;

[0021] Then put the ring-shaped rough billet after the blanking treatment in step 1 into vegetable lubricating oil for soaking;

[0022] Then put the ring-shaped rough blank after the impregnation treatment in step 2 into the drawing die, and set a release sheet between the blank and the drawing die, and then use a punch to pull the inner ring of the ring-shaped rough blank in sections Stretching to form semi-finished products;

[0023] Step 4. Put the semi-finished product after stretching in step 3 into the bending die, and set a release sheet between the semi-finished product and the bending die, and then use a punch to bend the outer ring of the semi-finished product to form an irregular curve. ring finished product.

Embodiment 2

[0025] The production method of annular special-shaped parts 2.

[0026] First, the raw material is processed by the blanking die to form a round rough billet;

[0027] Then put the round rough billet after the blanking treatment in step 1 into vegetable lubricating oil for soaking;

[0028] Then put the round rough billet that has been impregnated in step two into the drawing die, and set a release sheet between the billet and the drawing die, and then use a punch to stretch the middle of the round rough billet in sections Process, and open at the central point of the circular roughness to form a semi-finished product;

[0029] Step 4. Put the semi-finished product after the stretching treatment in step 3 into the bending die, and set a release sheet between the semi-finished product and the bending die, and then use a punch to bend the inner and outer rings of the semi-finished product to form a cross section of Loop finished product with irregular curves.

Embodiment 3

[0031] Production of cylindrical special-shaped parts.

[0032] First, the raw material is processed by the blanking die to form a round rough billet;

[0033] Then put the round rough billet after the blanking treatment in step 1 into vegetable lubricating oil for soaking;

[0034] Then put the round rough billet after the dipping treatment in step 2 into the drawing die, and set a release sheet between the billet and the drawing die, and then use the punching machine to stretch the middle part of the round rough billet in sections processing to form semi-finished products;

[0035] Step 4. Put the semi-finished product after the stretching treatment in step 3 into the bending die, and set a release sheet between the semi-finished product and the bending die, and then use a punch to bend the outer ring of the semi-finished product to form a cylindrical finished product.

[0036] In the present invention, after the raw material is blanked, the ring-shaped rough blank formed ...

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PUM

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Abstract

The invention relates to a machining method for a special-shaped part. The machining method comprises the steps of blanking, soaking, segmented stretching and edge bending. According to the machining method for the special-shaped part, after blanking of a raw material, an annular rough blank formed through blanking is subjected to soaking treatment, after soaking treatment, the malleability of the material is improved, and meanwhile the pressure of a punching machine tool to the material can be dispersed, so that the material is prevented from being cracked under too large pressure of a punching head of the machine tool; and meanwhile, the demolding difficulty of the material is greatly decreased by arranging a release sheet. By adopting the production technology to conduct production, the number of segmentations of the material subjected to segmented stretching is reasonably arranged, the malleability of different materials can be sufficiently improved, and the stretching limitation of the materials is reached.

Description

technical field [0001] The invention relates to the field of mechanical parts production, in particular to a processing method for special-shaped parts. Background technique [0002] Stamping is a forming processing method that applies external force to plates, strips, pipes and profiles by presses and molds to cause plastic deformation or separation to obtain workpieces (stamping parts) of required shape and size. Stamping and forging belong to plastic processing (or pressure processing) and are collectively called forging. The blanks for stamping are mainly hot-rolled and cold-rolled steel sheets and strips. Among the steel products in the world, 60-70% are plates, most of which are stamped into finished products. The body, chassis, fuel tank, radiator fins of the car, the steam drum of the boiler, the shell of the container, the iron core silicon steel sheet of the motor and electrical appliances, etc. are all stamped. There are also a large number of stamping parts in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D22/20
CPCB21D35/002B21D22/201
Inventor 蔡锡海潘学东朱朝晖
Owner 苏州中佳精密机械有限公司
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