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Precision stamping process for sheet metal parts

A technology of precision stamping and sheet metal parts, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the difficulty of stamping, the accuracy, speed, quality and reliability of ordinary stamping can not be adapted to large-scale, large-scale, High precision, automated production, and high product precision requirements

Active Publication Date: 2018-09-21
宁波诚泰汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a traditional processing technology, ordinary stamping processing is increasingly unable to meet the needs of modern large-scale, high-volume, high-precision, and automated production in terms of precision, speed, quality, and reliability. Therefore, the development of precision stamping technology has become a new social needs
[0004] Precision stamping is essentially different from ordinary stamping. Precision stamping refers to various materials stamped out by precision punching machines. These precision stamping parts have higher precision requirements than ordinary stamping, such as seat belt buckles, car seat slides, etc. Rails, etc., stamping is difficult, the product precision requirements are high, and the product qualification rate is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] What present embodiment selects for use is seat belt buckle, and its process comprises:

[0028] (1) Blanking: Calculate the unfolded size according to the size of the safety belt buckle, select 20# steel according to the unfolded size, and cut the plate into pieces by a shearing machine;

[0029] (2) Trimming: Flatten the sheet, trim the edges, and set positioning holes on the sheet;

[0030] (3) Preparation of graphite solvent: 4% graphite, 2.8% ethylene glycol, 10% ethanol, 1.3% ethyl acrylate, 0.9% sodium dodecylsulfonate and the rest of the water are mixed into a suspension ;

[0031] (4) Before stamping: Use a cushion under the stamping die, the material of which is silicone rubber; first heat the mold to 110-120°C, and spray ink solvent on the mold before stamping;

[0032] (5) Suction stamping: Stamping uses a stamping die, and an air suction device is arranged below the stamping die. The suction device is an air suction pump; the flow rate of the air suction ...

Embodiment 2

[0033] Embodiment 2: The present embodiment is different from Embodiment 1 in that the proportioning of the graphite solvent is: 4.5% graphite, 3% ethylene glycol, 9% ethanol, 1.2% ethyl acrylate, 1.0% ten Sodium dialkylsulfonate and the balance of water.

Embodiment 3

[0034] Embodiment 3: The present embodiment is different from Embodiment 1 in that the proportioning of graphite solvent is: 5% graphite, 2% ethylene glycol, 8% ethanol, 1.5% ethyl acrylate, 0.8% ten Sodium dialkylsulfonate and the balance of water.

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Abstract

The invention provides a precision stamping process for sheet metal parts. The precision stamping process comprises the following steps that boards are cut into sheets by a plate shearing machine, flattening is carried out, deburring is carried out, and a positioning holes is formed; graphite, ethylene glycol, ethyl alcohol, ethyl acrylate, sodium dodecyl sulfonate and water are mixed to obtain suspension liquid; a stamping die is heated to 110DEG C to 120 DEG C,and the stamping die is sprayed with the suspension liquid; and a suction device is arranged on the lower portion of the stamping die, and then the stamping die is used for punching. According to the precision stamping process for the sheet metal parts, the graphite, the ethylene glycol, the ethyl alcohol and the sodium dodecyl sulfonate are used for preparing the suspension liquid, the graphite can achieve a lubrication effect, the sodium dodecyl sulfonate can disperse the graphite, the ethyl alcohol can accelerate the evaporation rate of the suspension liquid, and the ethylene glycol can enable the graphite to become uniformly distributed graphite films. Therefore, in the process of precision stamping of the sheet metal parts, the die plays a very good lubrication role, the precision of the sheet metal parts is ensured, and the qualified rate of a product is high.

Description

technical field [0001] The invention relates to the technical field of stamping, and more specifically, to a precision stamping process for sheet metal parts. Background technique [0002] Stamping is a method of forming and processing workpieces of required shape and size by applying external force to plates, strips, pipes, and profiles by presses and molds to cause plastic deformation or separation to obtain workpieces of required shape and size. , oil tank, radiator, motor, etc. are all stamping processing. [0003] Stamping processing is a production technology that uses the power of conventional or special stamping equipment to directly subject the sheet to deformation force and deform in the mold, so as to obtain product parts of a certain shape, size and performance. Sheet metal, mold and equipment are the three elements of stamping processing. Since the introduction of mechanical stamping in the early 20th century, stamping has experienced a rapid development proce...

Claims

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Application Information

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IPC IPC(8): B21D22/20B21D37/16B21D37/18B21D35/00B21D53/88
CPCB21D22/206B21D35/002B21D37/16B21D37/18B21D53/88
Inventor 姚赞诚
Owner 宁波诚泰汽车部件有限公司
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