CN215918844U - Bending die for A section of inner longitudinal beam - Google Patents

Abstract

The utility model discloses an inner longitudinal beam A-section bending die, wherein a groove-shaped structure comprising an upper slope groove, a plane groove, a lower slope groove, a concave groove and an inclined plane groove is arranged at the upper part of a lower die core, and a limiting piece and an upper die core matched with the groove-shaped structure are arranged on the upper slope groove, the plane groove, the lower slope groove, the concave groove and the inclined plane groove, so that a working procedure piece of the inner longitudinal beam A-section can be bent and a complex curved surface is formed; in addition, the evenly arranged positioning pieces can position the process pieces, so that the process pieces are evenly deformed in the stamping process, and the position relation and the size relation among the hole positions meet the design requirements.

Description

Bending die for A section of inner longitudinal beam

Technical Field

The utility model relates to the field of stamping equipment, in particular to an A-section bending die for an inner longitudinal beam.

Background

The frame of the automobile mainly comprises longitudinal beams and cross beams, the cross section of each frame longitudinal beam is generally U-shaped, and the frame longitudinal beams are formed by welding upper end wing plates and lower end wing plates to webs. Under service conditions, the frame rails, which are the main components of the frame, are subjected to various complex loads from the road and loads, and frame rail strength, stiffness and life are very important in the overall design of the vehicle. The frame longitudinal beam is the largest stamping workpiece in automobile production and comprises A, B sections, when an inner longitudinal beam A section is machined, because the curved surface is complex, the deformation of each part is different during stamping, after the process piece is stamped, each part is rebounded to a certain degree, and the shape of the final process piece and the shape and size tolerance of the hole site on the final process piece are large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides an A-section bending die for an inner longitudinal beam, which comprises a lower die assembly and an upper die assembly;

the lower die assembly includes:

the lower die base is provided with a mounting cavity;

the lower mold core is arranged in the mounting cavity, the upper part of the lower mold core is of a groove-shaped structure, and the groove-shaped structure comprises a continuous uphill groove, a planar groove, a downhill groove, a concave groove and an inclined plane groove which are formed by extending from one end to the other end;

the limiting pieces are arranged on the bottom surface of the groove-shaped structure and are respectively positioned on the uphill groove, the plane groove, the downhill groove, the concave groove and the inclined groove;

the upper die assembly comprises:

an upper die holder;

and the upper die core is arranged in the upper die base and is matched with the groove-shaped structure.

Preferably, the downward slope groove and the concave groove are arranged in a manner of offsetting towards one side of the plane groove, the inclined plane groove is arranged in a manner of offsetting towards the other side of the plane groove, and the bottom surface of the inclined plane groove is an inclined upward plane.

Preferably, one side wall of the concave groove opposite to the offset direction of the concave groove is inwards recessed to form an inner concave part, and the inner concave part is arranged close to the bottom surface of the concave groove.

Preferably, a pair of concave protrusions are arranged at the joint of the bottom surface and the two side walls of the inclined plane groove, and the protrusions are arranged close to the free end of the inclined plane groove.

Preferably, the lower die core comprises a strip-shaped bottom block and side blocks arranged on two sides of the bottom block, the upper surface of the bottom block is the bottom surface of the groove-shaped structure, and the opposite side surfaces of the side blocks are the side walls of the groove-shaped structure.

Preferably, the bending die for the A section of the inner longitudinal beam further comprises a guide mechanism, and the guide mechanism comprises:

the guide posts are arranged on the upper die base and are close to two ends of the upper die base;

and the guide groove is arranged on the lower die base and is matched with the guide pillar.

The utility model has the beneficial effects that:

the upper part of the lower mold core is provided with a groove-shaped structure comprising an upper slope groove, a plane groove, a lower slope groove, a concave groove and an inclined plane groove which are continuous, the upper slope groove, the plane groove, the lower slope groove, the concave groove and the inclined plane groove are provided with limiting parts and an upper mold core matched with the groove-shaped structure, so that a process part of the section A of the inner longitudinal beam can be bent, and a complex curved surface is formed; in addition, the evenly arranged positioning pieces can position the process pieces, so that the process pieces are evenly deformed in the stamping process, and the position relation and the size relation among the hole positions meet the design requirements.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an A-section bending die for an inner longitudinal beam;

FIG. 2 is a schematic structural view of an upper mold core and a lower mold core in the embodiment of FIG. 1;

FIG. 3 is a schematic structural view of a lower mold core in the embodiment of FIG. 1;

fig. 4 is a schematic structural diagram of another view angle of the embodiment of fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 to 4, the bending die for the section a of the inner longitudinal beam is used for bending the working piece 10, and comprises a lower die assembly and an upper die assembly;

the lower die assembly includes: a lower die base 21, a lower die core and a limiting piece. The lower die base 21 is provided with a mounting cavity 21a and a limiting column 25; the lower mold core is arranged in the mounting cavity 21a, the upper part of the lower mold core is of a groove-shaped structure, and the groove-shaped structure comprises an upward slope groove 22a, a planar groove 22b, a downward slope groove 22c, a concave groove 22d and an inclined plane groove 22e which are formed in a continuous mode and extend from one end to the other end; the downward slope groove 22c and the concave groove 22d are disposed to be offset to one side of the plane groove 22b, the inclined plane groove 22e is disposed to be offset to the other side of the plane groove 22b, and the bottom surface of the inclined plane groove 22e is a plane inclined upward. One side wall of the concave groove 22d opposite to the offset direction thereof is recessed inwards to form an inner concave part 22j, and the inner concave part 22j is arranged close to the bottom surface of the concave groove 22 d. A pair of concave protrusions 22k is arranged at the connection part of the bottom surface and the two side walls of the inclined plane groove 22e, and the protrusions 22k are arranged close to the free end of the inclined plane groove 22 e. The lower die core comprises a strip-shaped bottom block 22 and side blocks 23 arranged on two sides of the bottom block 22, the upper surface of the bottom block 22 is the bottom surface of a groove-shaped structure, and the opposite side surfaces of the side blocks 23 are side walls of the groove-shaped structure.

The limiting pieces are arranged on the bottom surface of the groove-shaped structure and are respectively positioned on the uphill groove 22a, the plane groove 22b, the downhill groove 22c, the concave groove 22d and the inclined groove 22 e; the limiting device comprises a square limiting block 22l arranged on an upward slope groove 22a, a first limiting nail 22f respectively arranged on a plane groove 22b, a second limiting nail 22g arranged on a downward slope groove 22c, a third limiting nail 22h arranged on a concave groove 22d and a fourth limiting nail 22i arranged on a slope groove 22 e.

The upper die assembly comprises: the die comprises an upper die holder 31 and an upper die core 32, wherein the upper die core 32 is arranged in the upper die holder 31 and is matched with the groove-shaped structure. Interior longeron A section mould of bending still includes guiding mechanism, guiding mechanism includes: a guide post 24 and a guide slot 33. The guide posts 24 are arranged on the upper die holder 31 and are arranged close to two ends of the upper die holder 31; the guide groove 33 is arranged on the lower die base 21 and is matched with the guide post 24.

The utility model has the beneficial effects that:

the process part 10 of the inner longitudinal beam A section can be bent and form a complex curved surface by arranging a groove-shaped structure comprising an ascending groove 22a, a plane groove 22b, a descending groove 22c, a concave groove 22d and an inclined groove 22e which are continuous on the upper part of the lower mold core, limiting parts respectively positioned on the ascending groove 22a, the plane groove 22b, the descending groove 22c, the concave groove 22d and the inclined groove 22e, and an upper mold core 32 matched with the groove-shaped structure; in addition, the evenly arranged positioning pieces can position the working procedure piece 10, so that the working procedure piece 10 is evenly deformed in the stamping process, and the position relation and the size relation among the hole positions meet the design requirements.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the utility model is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.

Claims (6)

1. A bending die for an A section of an inner longitudinal beam is characterized by comprising a lower die assembly and an upper die assembly;

the lower die assembly includes:

the lower die base is provided with a mounting cavity;

the lower mold core is arranged in the mounting cavity, the upper part of the lower mold core is of a groove-shaped structure, and the groove-shaped structure comprises a continuous uphill groove, a planar groove, a downhill groove, a concave groove and an inclined plane groove which are formed by extending from one end to the other end;

the limiting pieces are arranged on the bottom surface of the groove-shaped structure and are respectively positioned on the uphill groove, the plane groove, the downhill groove, the concave groove and the inclined groove;

the upper die assembly comprises:

an upper die holder;

and the upper die core is arranged in the upper die base and is matched with the groove-shaped structure.

2. The inner longitudinal beam A-section bending die according to claim 1, wherein the downward slope groove and the concave groove are arranged in a manner of being offset to one side of the plane groove, the inclined plane groove is arranged in a manner of being offset to the other side of the plane groove, and the bottom surface of the inclined plane groove is an inclined upward plane.

3. The inner longitudinal beam A-section bending die as claimed in claim 1, wherein a side wall of the concave groove opposite to the offset direction of the concave groove is recessed inwards to form an inner concave part, and the inner concave part is arranged close to the bottom surface of the concave groove.

4. The inner longitudinal beam A-section bending die according to claim 1, wherein a pair of concave protrusions are arranged at the joints of the bottom surface and the two side walls of the inclined plane groove, and the protrusions are arranged close to the free ends of the inclined plane groove.

5. The inner longitudinal beam A-section bending die according to claim 1, wherein the lower die core comprises a strip-shaped bottom block and side blocks arranged on two sides of the bottom block, the upper surface of the bottom block is the bottom surface of a groove-shaped structure, and the opposite side surfaces of the side blocks are side walls of the groove-shaped structure.

6. The inner longitudinal beam A-section bending die according to claim 1, wherein the inner longitudinal beam A-section bending die further comprises a guide mechanism, and the guide mechanism comprises:

the guide posts are arranged on the upper die base and are close to two ends of the upper die base;

and the guide groove is arranged on the lower die base and is matched with the guide pillar.

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