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A mold for stamping and forming of a sleeve and its application method

A stamping forming and sleeve technology, applied in the field of stamping, can solve the problems of cumbersome process flow, low production efficiency, and low material utilization rate, and achieve the effects of reducing impact, improving production efficiency, and improving material utilization rate

Active Publication Date: 2020-11-27
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] After the second deep drawing in step 3, annealing treatment is required before step 4. That is to say, in the existing production process, four times of stamping, one turning and one milling operation are required, and the process flow is relatively It is cumbersome, and it is necessary to switch three operating platforms (punch machine, lathe, milling machine), and each process uses its own tooling. In order to ensure the punching allowance of the subsequent mold and the turning and milling allowance, a larger round blank is required. As marked in step 1 blanking and deep drawing, the diameter of the blank needs to be 77mm, so the material utilization rate is not high, and the production efficiency is also low

Method used

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  • A mold for stamping and forming of a sleeve and its application method
  • A mold for stamping and forming of a sleeve and its application method
  • A mold for stamping and forming of a sleeve and its application method

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Embodiment Construction

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0026] figure 1 is a schematic cross-sectional structural diagram of an engine sleeve; image 3 It is a schematic cross-sectional structure diagram of a mold for stamping and forming a sleeve according to a specific embodiment of the present invention; image 3 In , the structure of the cutting edge is shown in the partial enlarged schematic diagram of A, Figure 4 for use image 3 Schematic diagram of the process flow of the mold. see figure 1 , image 3 and Figure 4 Shown, the present invention provides a kind of mold that is used for sleeve stamping forming, and it is used for processing such as figure 1 As shown in the sleeve, the wall thickness of the sleeve...

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Abstract

The invention relates to a die for sleeve punching forming. The wall thickness of the sleeve is 2mm, and a straight cylinder part and a flange part are included, the radius of a transition arc betweenthe straight cylinder part and the flange part is 2mm, the flange part is formed, the bottom surface is cut off and the straight cylinder part is shaped by one-time punching stroke on a blank, the outer diameter of a flanging of the blank is at least 4mm larger than the outer diameter of the flange part, the height of the blank is greater than or equal to the height of a sleeve, and the diameterof a cylinder part of the blank is not less than the diameter of the straight cylinder part, and an upper die assembly and a lower die assembly which are coaxially arranged are included. According tothe die for sleeve punching forming, the production efficiency and the utilization rate of part materials are improved. The invention further provides a using method of the die.

Description

technical field [0001] The invention relates to the technical field of stamping, in particular to a mold for stamping a sleeve and a method for using the same. Background technique [0002] figure 1 It is a schematic diagram of a sectional structure of an engine sleeve, see figure 1 As shown, the material used in the sleeve is 1Cr21Ni5Ti, and the material thickness is 2mm. The sleeve 1 includes a straight cylinder portion 11 and a flange portion 12, the radius of the transition arc between the straight cylinder portion 11 and the flange portion 12 is 2 mm, and the outer diameter of the straight cylinder portion 11 shown is 40 mm. The outer diameter of the flange part 12 is 50mm, the bottom surface of the straight cylinder part 11 is an arc surface with a radius of 233mm, and the height from the bottom of the arc surface to the end surface of the flange part 12 is 17.5mm. The radius of the transition arc between the above flanges is only 2mm, so the processing technology o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/10B21D37/10B21D35/00
CPCB21D35/002B21D37/10B21D53/10
Inventor 李又春姜嫄嫄郑学著马鑫苏波
Owner CHINA HANGFA SOUTH IND CO LTD
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