Commercial vehicle L-shaped stamping part forming tool

Abstract

The utility model relates to a commercial vehicle L-shaped stamping part forming tool which comprises a female die base, L-shaped stamping flanges and a bottom molded surface are arranged at the upper end of the female die base, the L-shaped stamping flanges are arranged on the two sides of the bottom molded surface, the L-shaped stamping flanges are provided with material storage pits, and the material storage pits are located at the two ends of L-shaped corners of the L-shaped stamping flanges. The conical storage pit is arranged to increase the forming depth of the stamping part and is used for storing materials during primary forming, the primary forming part is driven to move through the bottom molded surface during secondary forming, then the materials in the storage pit are driven to move to a stamping part thinning area, cracking caused by excessive thinning of the stamping part is avoided, the rigidity of the stamping part is improved, and the service life of the stamping part is prolonged. Therefore, the overall safety of the commercial vehicle body-in-white is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial vehicle manufacturing, in particular to a commercial vehicle L-shaped stamping part forming tool. Background Art

[0002] Structural reinforcements in commercial vehicle body-in-white sheet metal parts often use stampings with a "J" cross-section and an L-shape as a whole. Due to the structural characteristics of the stampings themselves, the forming depth is relatively large; the amount of sheet material in the edge area of ​​the stampings that flows into the stretch forming area is limited, which makes the forming area prone to excessive thinning and thus cracking. To avoid this problem, the first prior art adopts a one-time forming process to achieve the product shape after the stamping parts are formed once, and then trimming and punching are performed to obtain the product shape. The disadvantage is that the stamping parts have a large forming depth, and the L-shaped inflection point area and the "J"-shaped side wall area are cracked; the second prior art adopts a two-time forming process, a shallow stretching forming process, and a flanging forming process, to solve the side wall cracking problem by reducing the forming depth. The disadvantage is that the L-shaped top area of ​​the stamping part cracks during the secondary flanging forming. Summary of the invention

[0003] The utility model proposes a commercial vehicle L-shaped stamping part forming tooling, which increases the forming depth of the stamping part by arranging a conical material storage pit, and is used to store materials during the primary forming. During the secondary forming, the primary formed part is driven to move through the bottom profile, and then the material in the material storage pit is driven to move to the thinning area of ​​the stamping part, thereby solving the cracking caused by the transition thinning of the stamping part, improving the rigidity of the stamping part, and thus improving the overall safety of the commercial vehicle body-in-white.

[0004] In order to solve the problems in the above background technology, the present invention is implemented through the following technical solutions:

[0005] A commercial vehicle L-shaped stamping part forming tool comprises a die base, an L-shaped stamping flange and a bottom profile are arranged on the upper end of the die base, the L-shaped stamping flanges are arranged on both sides of the bottom profile, the L-shaped stamping flanges are provided with material storage pits, and the material storage pits are located at both ends of the L-shaped corners of the L-shaped stamping flange.

[0006] Furthermore, the L-shaped stamping flanges are divided into two groups, and the two groups of L-shaped stamping flanges are respectively arranged at the upper end of the die base, and the storage pits are arranged at both ends of the L-shaped corners of the two groups of L-shaped stamping flanges.

[0007] Furthermore, the storage pit is a semi-conical storage pit.

[0008] Furthermore, one end of the semi-conical storage pit is a cone tip, and the other end of the semi-conical storage pit is a cone opening, and the depth between the cone tip and the cone opening increases from shallow to deep.

[0009] Furthermore, the cone tip is located on the inner side of the L-shaped stamping flange, and the cone opening is located on the outer side of the L-shaped stamping flange.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects:

[0011] A conical storage pit is set up to increase the forming depth of the stamping parts and store materials during the first forming process. During the second forming process, the first formed parts are driven to move through the bottom profile, and then the materials in the storage pit are driven to move to the thinning area of ​​the stamping parts. This solves the problem of cracking caused by excessive thinning of the stamping parts, improves the rigidity of the stamping parts, and thus improves the overall safety of the commercial vehicle body-in-white. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 The utility model is a top view Figure 1 ;

[0014] Figure 3 for Figure 2 Sectional view at the middle BB;

[0015] Figure 4 for Figure 2 Sectional view at CC;

[0016] Figure 5 The utility model is a top view Figure 2 ;

[0017] Figure 6 for Figure 5 A partial enlarged view of point A in the middle.

[0018] Reference numerals

[0019] 1. Die base; 2. L-shaped stamping flange; 3. Bottom profile; 4. Material storage pit. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-Figure 6 As shown, a commercial vehicle L-shaped stamping part forming tool includes a die base 1, an L-shaped stamping flange 2 and a bottom profile 3 are provided at the upper end of the die base 1, L-shaped stamping flanges 2 are provided on both sides of the bottom profile 3, the L-shaped stamping flange 2 is provided with a material storage pit 4, and the material storage pit 4 is located at both ends of the L-shaped corner of the L-shaped stamping flange 2.

[0024] There are two groups of L-shaped stamping flanges 2, which are respectively arranged at the upper end of the die base 1, and storage pits 4 are arranged at both ends of the L-shaped corners of the two groups of L-shaped stamping flanges 2.

[0025] The material storage pit 4 is a semi-conical material storage pit.

[0026] One end of the semi-conical storage pit is a cone tip, and the other end of the semi-conical storage pit is a cone opening. The depth between the cone tip and the cone opening increases from shallow to deep.

[0027] The material storage pit 4 is semi-conical, with the cone tip located inside the L-shaped stamping flange 2 and the cone opening located outside the L-shaped stamping flange 2. The depth of the material storage pit increases from the inside to the outside, and the pit depth reaches the deepest at the cone opening.

[0028] The bottom profile 3 is produced during the first forming process, at which time the material storage pit 4 is used to store materials. During the secondary forming process, the bottom profile 3 plays a role in transmitting force and stretching. The bottom profile 3 drags the side wall of the stamping part to stretch it, and the material in the material storage pit 4 is dragged into the area of ​​the stamping part that is prone to cracking, thereby solving the cracking problem caused by transitional thinning in the area of ​​the stamping part that is prone to cracking.

[0029] It is used to store materials during the primary molding process. During the secondary molding process, the primary molding part is driven to move through the bottom molding surface 3, and then the materials in the storage pit are driven to move to the area prone to cracking of the stamping part.

[0030] The cone tip is located on the inner side of the L-shaped stamping flange 2 , and the cone opening is located on the outer side of the L-shaped stamping flange 2 .

[0031] The structure of the L-shaped stamping part is that the overall appearance is L-shaped, the L corners are connected by a curvature arc transition, and the cross-section of the L-shaped stamping part is a "J"-shaped structure.

Claims

1. A forming tool for L-shaped stamping parts of commercial vehicles, characterized in that: The invention comprises a die base (1), wherein the upper end of the die base (1) is provided with an L-shaped stamping flange (2) and a bottom profile (3), the L-shaped stamping flange (2) is provided on both sides of the bottom profile (3), the L-shaped stamping flange (2) is provided with a material storage pit (4), and the material storage pit (4) is located at both ends of the L-shaped corner of the L-shaped stamping flange (2).

2. The commercial vehicle L-shaped stamping parts forming tooling according to claim 1 is characterized in that: The L-shaped stamping flanges (2) are in two groups, and the two groups of L-shaped stamping flanges (2) are respectively arranged at the upper end of the die base (1), and the material storage pits (4) are arranged at both ends of the L-shaped corners of the two groups of L-shaped stamping flanges (2).

3. The commercial vehicle L-shaped stamping parts forming tooling according to claim 2, characterized in that: The material storage pit (4) is a semi-conical material storage pit.

4. The commercial vehicle L-shaped stamping part forming tooling according to claim 3 is characterized in that: One end of the semi-conical material storage pit is a cone tip, and the other end of the semi-conical material storage pit is a cone opening, and the depth between the cone tip and the cone opening increases from shallow to deep.

5. The commercial vehicle L-shaped stamping parts forming tooling according to claim 4, characterized in that: The conical tip is located on the inner side of the L-shaped stamped flange (2), and the conical opening is located on the outer side of the L-shaped stamped flange (2).

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