Die for flanging and upsetting part

Abstract

The utility model relates to a part flanging upsetting die which comprises an upper die and a lower die, the upper die comprises an upper die base, an upsetting female die and a movable female die, and the upsetting female die is in rigid connection with the upper die base; a strong nitrogen spring is arranged on the upsetting female die, and the upsetting female die is connected with the movable female die through the strong nitrogen spring; the lower die comprises a lower die base, a flanging male die and a movable male die, the lower die base is in rigid connection with the flanging male die, a common nitrogen spring is arranged on the lower die base, the lower die base is connected with the movable male die through the common nitrogen spring, and the upsetting female die, the movable female die and the movable male die are each provided with an orifice allowing the flanging male die to penetrate through. According to the utility model, not only are procedures and operators saved, but also the rejection rate of processing production can be reduced from 25% to 0.3%, the processing time is shortened, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of automobile parts, and in particular relates to a die for flanging and upsetting parts. Background Art

[0002] Most automotive parts are formed by stamping. For parts with edges, they are usually flanging first and then stamping. Since the material thickness becomes thinner after flanging, the parts are prone to cracking during stamping. Figure 8 The rear plate of a beam shown in the figure has a material thickness of 3MM. As indicated by the arrows in the figure, the two fillets are too small, and the material becomes thinner after flanging. Since this part needs to cooperate with the automobile beam, the fillet cannot be increased. The original mold structure is a traditional structure. The mold is first used to upset the step, and then the step is repaired to achieve the product function. It requires 2 processes and a total of 4 workers to complete. In addition, the previous material becomes thinner, the product quality is unstable, and the scrap rate reaches 25%. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide a die for flanging and upsetting parts, solve the problem of thinning the flanging of thick plate materials and improve the quality and reduce the cost.

[0004] The technical solution provided by the utility model is: a mold for flanging and upsetting parts, comprising an upper mold and a lower mold, the upper mold comprising an upper mold base, a roughing die and a movable die, the roughing die being rigidly connected to the upper mold base; a strong nitrogen spring is provided on the roughing die, and the roughing die is connected to the movable die through the strong nitrogen spring; the lower mold comprises a lower mold base, a flanging punch and a movable punch, the lower mold base is rigidly connected to the flanging punch, a common nitrogen spring is provided on the lower mold base, and the lower mold base is connected to the movable punch through the common nitrogen spring, and the roughing die, the movable die and the movable punch are all provided with openings for the flanging punch to pass through.

[0005] An upper fixing plate is fixedly connected to the upper die base, and the roughing die is fixedly connected to the upper die base via the upper fixing plate.

[0006] A lower fixing plate is fixedly connected to the lower die base, and the flanging punch is fixedly connected to the lower die base via the lower fixing plate.

[0007] The movable punch is provided with a parts positioning pin.

[0008] The utility model adopts the above-mentioned structure. The part to be flanging is placed on the movable punch. An external force, such as pressure from a machine tool, drives the upper die downward. The movable die and the movable punch clamp the part and move downward. The flanging punch flanges the part. After the flanging is completed, the upsetting die moves downward under the action of the machine tool to upset the top of the flanging and upset the side material. The utility model not only saves process steps and operators, but also reduces the scrap rate of processing production from 25% to 0.3%, shortening processing time and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the utility model;

[0010] Figure 2 for Figure 1 Right view of;

[0011] Figure 3 This is a schematic diagram of the initial state of the utility model;

[0012] Figure 4 for Figure 3 A partial enlarged view of

[0013] Figure 5 This is a schematic diagram of the flanging state of the utility model;

[0014] Figure 6 for Figure 5 A partial enlarged view of

[0015] Figure 7 This is a partial enlarged view of the utility model in the roughening state;

[0016] Figure 8 This is a schematic diagram of the thickness of the rear panel of an automobile frame becoming thinner after conventional flanging. DETAILED DESCRIPTION

[0017] like Figure 1 and Figure 2 As shown, the utility model includes an upper die and a lower die, the upper die includes an upper die base 9, an upper fixed plate 1, a roughing die 2 and a movable die 11, the roughing die 2, the upper fixed plate 1 and the upper die base 9 are fixedly connected in sequence; a strong nitrogen spring 10 is provided on the roughing die 2, and the roughing die 2 is connected to the movable die 11 through the strong nitrogen spring 10; the lower die includes a lower die base 5, a lower fixed plate 8, a flanging punch 3 and a movable punch 4, the lower die base 5, the flanging punch 3 and the lower fixed plate 8 are fixedly connected The lower fixed plate 8 is fixedly connected to the lower die base 5, and an ordinary nitrogen spring 6 (a conventional nitrogen spring with less elastic force than a strong nitrogen spring) is provided on the lower fixed plate 8. The roughing die 2, the movable die 11 and the movable punch 4 are all provided with openings for the flanging punch 3 to pass through, wherein the opening width of the roughing die 2 is smaller than the opening width of the movable die 11 (the width difference is approximately the thickness of the part plate); the movable punch 4 is sleeved on the flanging punch 3 through its opening and is fixedly connected to the lower die base 5 through the ordinary nitrogen spring 6.

[0018] The movable punch 4 is provided with a part positioning pin 7 .

[0019] The working process of this utility model is as follows: in the initial state (such as Figure 3 、 Figure 4As shown in the figure, the movable die 11 is at its bottom dead center under the action of the strong nitrogen spring 10, and the movable punch 4 is at its top dead center under the action of the nitrogen spring 6. During production, the part 12 to be flanging is placed on the movable punch 4 and positioned using the positioning pins 7. When the machine tool moves downward, because the force of the strong nitrogen spring of the upper die is much greater than the force of the ordinary nitrogen spring of the lower die, the movable die 11 and the movable punch 4 clamp the product and move downward. The top of the flanging punch 3 enters the orifice of the movable die 11 and works together with the side wall of the orifice to flanging the product (as shown in the figure). Figure 5 and 6 As shown). When the movable punch 4 is at the bottom and fits with the lower fixed plate 8 of the lower die, the movable punch 4 and the movable die 11 stop moving downward. Under the action of the machine tool, the strong nitrogen spring is compressed and the roughing die 2 moves downward to upset the top of the hole and upset the side material (as shown). Figure 7 shown).

Claims

1. A die for flanging and upsetting parts, comprising an upper die and a lower die, characterized in that: The upper die includes an upper die base, a roughing die and a movable die, and the roughing die is rigidly connected to the upper die base; a strong nitrogen spring is provided on the roughing die, and the roughing die is connected to the movable die through the strong nitrogen spring; the lower die includes a lower die base, a flanging punch and a movable punch, and the lower die base is rigidly connected to the flanging punch, and an ordinary nitrogen spring is provided on the lower die base, and the lower die base is connected to the movable punch through the ordinary nitrogen spring, and the roughing die, the movable die and the movable punch are all provided with openings for the flanging punch to pass through.

2. The die for flanging and upsetting parts according to claim 1, characterized in that: An upper fixing plate is fixedly connected to the upper die base, and the roughing die is fixedly connected to the upper die base through the upper fixing plate.

3. The die for flanging and upsetting parts according to claim 1 or 2, characterized in that: A lower fixing plate is fixedly connected to the lower die base, and the flanging punch is fixedly connected to the lower die base through the lower fixing plate.

4. The die for flanging and upsetting parts according to claim 1 or 2, characterized in that: Part positioning pins are provided on the movable punch.

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