A semi-open draw forming structure

Abstract

The utility model relates to a half opening draw forming structure relates to the technical field of car design and manufacturing, the utility model discloses a half opening draw forming structure includes the mold line of'W'type, the radius of process supplementary female die fillet of the mold line of'W'type is 3mm~10mm, the radius of process supplementary male die fillet of the mold line of'W'type is 3mm~10mm, the draw angle of process supplementary side wall of the mold line of'W'type is 0°~5°. The utility model discloses a half opening draw forming structure compared with traditional draw forming structure, adopts the mold line of'W'type design, changes the shape of mold line through, effectively controls the plate material flow, has improved the wrinkle phenomenon that'Z'type deep drawing part produced because of uneven feeding. Further through the process design optimization of improving the side wall angle and optimizing male die and female die fillet, improves material utilization, to reach'Z'type deep drawing part quality promotion, the remarkable effect of cost reduction.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile design and manufacturing, and more specifically, to a semi-open drawing forming structure. Background Technology

[0002] With the rapid development of the automotive industry and intensified competition among automotive companies, new challenges have been posed to the manufacturing costs of automotive stamping parts, especially traditional automotive body parts. Figure 1 Most of the "Z"-shaped deep-drawn parts shown adopt... Figure 2 The full-coverage drawing process design shown requires a draft angle of more than 15° on the side wall, a radius R of more than 20mm for the punch and die, and the sheet metal must be retained on the blank holder after forming. This results in low material utilization, severe cracking and wrinkling during the forming process, long debugging cycle, and increased automotive mold development costs. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the prior art, the purpose of this utility model is to provide a semi-open drawing forming structure.

[0004] The semi-open drawing forming structure of this utility model includes a "W"-shaped parting line. The radius of the process supplementary die fillet of the "W"-shaped parting line is 3mm to 10mm, the radius of the process supplementary punch fillet of the "W"-shaped parting line is 3mm to 10mm, and the draft angle of the process supplementary sidewall of the "W"-shaped parting line is 0° to 5°.

[0005] The distance between the straight segments on the process supplementary sidewall of the "W"-shaped parting line is 5mm to 10mm.

[0006] Compared with the prior art, the semi-open drawing forming structure of this utility model has the following beneficial effects:

[0007] Compared with traditional drawing structures, the semi-open drawing structure of this invention adopts a "W"-shaped parting line design. By changing the shape of the parting line, the material flow direction is effectively controlled, improving the wrinkling phenomenon caused by uneven feeding in "Z"-shaped deep-drawn parts. Furthermore, by improving the sidewall angle and optimizing the process design of the punch and die radii, the material utilization rate is improved, thereby achieving significant results in improving the quality and reducing the cost of "Z"-shaped deep-drawn parts. Attached Figure Description

[0008] Figure 1 A schematic diagram of the structure of a "Z"-shaped deep-drawn part;

[0009] Figure 2 This is a schematic diagram of a fully enclosed drawing forming structure in the prior art;

[0010] Figure 3 This is a schematic diagram of the semi-open drawing forming structure of Example 1;

[0011] Figure 4 for Figure 3 A schematic diagram of the standard dimensions of a semi-open drawing forming structure;

[0012] Figure 5 This is a cross-sectional view of the semi-open drawing structure of Example 1 along the AA direction. Detailed Implementation

[0013] The semi-open drawing structure of this utility model will be further described below with reference to specific embodiments to help those skilled in the art to have a more complete, accurate and in-depth understanding of the technical solution of this utility model. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0014] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0015] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, terms such as "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The appearance of terms such as "horizontal," "vertical," or "suspended" does not mean that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the embodiments of this utility model, "a plurality of" means at least two. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] Example 1

[0017] like Figure 3-5 As shown, the semi-open drawing forming structure of this embodiment includes a "W"-shaped parting line 100, which is determined according to the size of the part. The radius of the process supplementary die fillet 200 is 3mm to 10mm. The radius of the process supplementary punch fillet 300 is 3mm to 10mm. The draft angle 400 of the process supplementary sidewall is 0° to 5°. After forming, the distance of the straight segment of the sheet metal on the sidewall is retained to be 5mm to 10mm. Figure 4 The standard dimensions of the parting line 100 of the "W" shape are shown as a specific example.

[0018] This embodiment targets "Z"-shaped deep-drawn parts, employing a semi-open drawing forming structure. Optimized designs were implemented for the "W"-shaped parting line, punch radius, die radius, draft angle (for process supplementation), and sheet metal dimensions after forming. Through simulation calculations and on-site stamping verification, this semi-open drawing forming structure demonstrates stability and improves quality issues such as cracking and wrinkling during the forming process. It also reduces the debugging cycle, decreases sheet metal dimensions, improves material utilization, and lowers the development cost of the body-in-white.

[0019] A certain project component utilizes the semi-open drawing forming structure of this embodiment, effectively controlling the sidewall wrinkling problem. The sheet metal dimensions of the semi-open drawing forming structure are reduced from 1300mm×785mm×1.2mm to 980mm×785mm×1.2mm, the sheet weight is reduced by 2.4Kg, material utilization is increased by 15%, the raw material cost per unit is reduced by 20 yuan, and the debugging cycle is reduced from 2 months to 1 month, significantly lowering mold development costs.

Claims

1. A semi-open drawing forming structure, characterized in that: The parting line includes a "W" shaped parting line, wherein the radius of the process-supplementary die fillet of the "W" shaped parting line is 3mm to 10mm, the radius of the process-supplementary punch fillet of the "W" shaped parting line is 3mm to 10mm, and the draft angle of the process-supplementary sidewall of the "W" shaped parting line is 0° to 5°.

2. The semi-open drawing forming structure according to claim 1, characterized in that: The distance between the straight segments on the process supplementary sidewall of the "W"-shaped parting line is 5mm to 10mm.

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