Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flanging face design method, flanging machining die and method and part

A design method and mold processing technology, which is applied in the field of stamping, can solve the problems of uneven exposed rounded corners of fenders, uneven outer gaps, and wavy flanges, and achieve the elimination of side wall wavy defects, high dimensional accuracy, The effect of improving quality

Active Publication Date: 2021-02-19
DONGFENG MOTOR CORP HUBEI
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the fenders manufactured by the mold often have appearance defects such as unsmooth exposed rounded corners and wavy appearance on the flanged surface, resulting in defects such as uneven outer gaps at the gap 30 and uneven rounded corners in appearance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flanging face design method, flanging machining die and method and part
  • Flanging face design method, flanging machining die and method and part
  • Flanging face design method, flanging machining die and method and part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An embodiment of the present invention provides a method for designing a flanging surface. The overall design theory is as follows: first design the technical surface, and then correct the technical surface to obtain the theoretical flanged surface. The flanging surface design method is suitable for the flanging design of thin-plate automobile outer panels, which can ensure the consistency of the flanging gap of the mold, and effectively avoid the appearance of uneven rounded corners and wavy side walls caused by uneven flanging gaps. problems, and at the same time, it can effectively control the springback of parts, so that the parts after springback tend to be consistent with the theoretical state.

[0051] see Figure 8 , the flanging surface design method of the present embodiment comprises the following steps:

[0052] 1. Design process:

[0053] Design a flanging vector direction line 1, obtain the process surface based on the set flanging line and flanging vect...

Embodiment 2

[0060] Based on the same inventive concept, this embodiment provides a flanging processing mold, which is used to process the flanging surface designed by the flanging surface design method in the first embodiment above. Specifically, see Figure 10 The flanging processing mold 40 includes a punch 41 and a flanging insert 42, the punch 41 and the flanging insert 42 have a profile that cooperates with each other, and the profile includes rounded corners and the process surface 45 determined in the above-mentioned embodiment 1, When the process surface is projected with the direction of the flanging vector as the projection direction, the same line type as the flanging line 50 can be obtained, such as Figure 9 As shown; at least one of the punch 41 and the flanging insert 42 can move along the flanging vector direction line, so that the edge of the part motherboard is pressed down between the two profiles.

[0061] In the present embodiment, the punch 41 is a fixed part, which...

Embodiment 3

[0064] Based on the same inventive concept, this embodiment provides a flanging processing method, using the flanging processing mold 40 of the above-mentioned embodiment 2 to perform flanging processing on the part mother plate 20 .

[0065] see Figure 10 , the flanging processing method comprises the steps:

[0066] Place the parts motherboard 20 to be flanged on the punch 41, the edge of the parts motherboard 20 protrudes outside the punch 41, and the edge is used to form the flanging after being pressed;

[0067] Control the flanging insert 42 along the flanging vector direction line ( Figure 10 (indicated by the middle arrow) moves downward, and the edge is pressed between the two profiles, that is, in the flanging gap 44, and the edge bends around the profile of the punch 41 to form a process sheet with a process surface. Body cross-section as Figure 8 Middle flanging vector direction line 1;

[0068] Control the flanging insert 42 to pull upwards along the flangi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a flanging face design method, a flanging machining die and method and a part with a flanging. The flanging face design method comprises the following steps that 1, a flangingvector direction line is designed, a process face is obtained on the basis of a set flanging line and the flanging vector direction line, and the process face serves as a craft process face and used for guiding flanging face machining; and 2, the flanging vector direction line is designed, a flanging face is designed and needs to be arranged at the outer side, close to the part, of the flanging vector direction line, a certain angle is formed between the flanging face and the flanging vector direction line and determined according to the springback condition of the part, and a theoretical flanging face designed according to the method is infinitely close to the springback part. A die structure is designed through the process face, the flanging vector direction serves as the flanging direction, so that the consistency of die flanging gaps can be guaranteed, and the problems of uneven part appearance fillets and side wall waves caused by uneven flanging gaps are effectively solved; and meanwhile, part springback can be effectively controlled, and the springback part tends to be consistent with the theoretical state.

Description

technical field [0001] The application belongs to the technical field of stamping, and in particular relates to a flanging surface design method, a flanging processing mold and method, and parts. Background technique [0002] The rounded corners of the stamped parts in the gaps on the car (the exposed rounded corners connected between the outer surface of the stamped part and the inner flanged surface) are difficult to reach the theoretical data state after manufacture, and the appearance quality of the rounded corners is often inconsistent, and the flanged surface is wavy. Defects, resulting in appearance defects such as uneven vehicle gaps and uneven rounded corners. [0003] see Figure 1 to Figure 3 , the most common appearance fillet on the outer cover of the car is the appearance fillet 21 of the fender next to the hood outer panel. Based on factors such as the appearance of the car body and drainage performance, the gap 30 between the hood outer panel 10 and the fende...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21D19/08B21D37/10B21D53/88
CPCB21D19/08B21D37/10B21D53/88
Inventor 黄海浪吴高伟党永坤李辉魏晓霜
Owner DONGFENG MOTOR CORP HUBEI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com