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A sleeve forming method

A technology of sleeves and flanges, which is applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of low production efficiency, cumbersome process flow, and low material utilization rate, so as to reduce impact, reduce forming process and turning The bottom process and the effect of improving the utilization rate of materials

Active Publication Date: 2020-12-01
CHINA HANGFA SOUTH IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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Embodiment Construction

[0030] 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.

[0031] figure 1 is a schematic cross-sectional structural diagram of an engine sleeve; image 3 It is a schematic process flow diagram of a sleeve forming method according to a specific embodiment of the present invention; Figure 4 for image 3 A schematic cross-sectional structure diagram of the mold in step C of the method. exist Figure 4 In , the structure of the cutting edge is shown in the partial enlarged schematic diagram of A, see figure 1 , image 3 and Figure 4 As shown, the present invention provides a sleeve forming method for processing such as figure 1 As shown in the sleeve, the wall thickness of the sleeve 1 is 2mm, including a straight portion ...

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Abstract

The invention discloses a sleeve forming method. The sleeve forming method comprises the following steps that step A, blank drawing is conducted, a blank material is preformed after the first time stamping forming; step B, drawing is conducted for the second time, the blank material subjected to stamping forming in the step A is subjected to stamping forming for the second time; step C, a die is provided, forming of the flange part of the blank material formed in the step B is completed by one time of stamping stroke, the bottom surface is cut off, and the straight cylinder part is formed; andstep D, the blank material formed in the step C is milled, an arc of the opening part of the straight wall is formed, and final machining of the sleeve is completed. Compared with the prior art, thesleeve forming method reduces forming procedures and bottom turning procedures, so that influence on the quality of the accessory surface by multi-procedure forming is reduced, and the utilization rate of accessory materials is improved.

Description

technical field [0001] The invention relates to the technical field of stamping, in particular to a forming method of a sleeve part. 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 of multi-process drawing, tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/10B21D35/00B21D37/10
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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