A stainless steel thin-walled part edge forming die and a forming method

Abstract

The present application relates to the technical field of thin-walled edge rolling, and particularly relates to a stainless steel thin-walled part edge rolling forming die and a forming method. The stainless steel thin-walled part edge rolling forming die and the forming method provided by the present application have a forming groove matched with the outer contour of the edge to be rolled on the forming die, and the edge of the forming groove is provided with a forming chamfer. Therefore, the forming die is stacked with the stainless steel thin-walled part, the inner contour of the forming groove is aligned with the outer contour of the edge to be rolled, that is, the inner contour of the forming groove can accurately position the bending part of the edge to be rolled, so that the dimensional accuracy of the edge rolling can be ensured. Under the limitation of the forming chamfer, the edge to be rolled of the stainless steel thin-walled part is knocked until the edge to be rolled is attached to the slope of the forming chamfer, at which time the stainless steel thin-walled part is edge-rolled semi-formed. Then the forming die is taken out, the edge to be rolled is continuously knocked until the edge to be rolled is knocked flat, that is, the stainless steel thin-walled part is edge-rolled formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thin-walled edge rolling, in particular to a stainless steel thin-walled part edge rolling forming die and a forming method. BACKGROUND

[0002] Thin-walled edge rolling products are mostly used in aerospace products and civil products. For civil products, due to the large quantity required by thin-walled edge rolling products, manual edge rolling cannot meet the production demand, and automation is generally used for production. For aerospace products, due to the limited quantity required by thin-walled edge rolling products, automation production will lead to high cost, so manual edge rolling is more economical for aerospace products. However, due to the large springback of stainless steel plate, manual edge rolling may result in that the size of the formed edge cannot meet the design requirements, resulting in poor product forming quality. SUMMARY

[0003] The present application provides a stainless steel thin-walled part edge rolling forming die and a forming method, which solves the technical problem that manual edge rolling in the related art may result in that the size of the formed edge cannot meet the design requirements, resulting in poor product forming quality.

[0004] In one aspect, the present application provides a stainless steel thin-walled part edge rolling forming die, a notch is provided on the stainless steel thin-walled part, a to-be-rolled edge is provided at the edge of the notch, a forming groove is provided on the forming die, the inner contour of the forming groove is the same in shape and size as the outer contour of the to-be-rolled edge, and a forming chamfer is provided at the edge of the forming groove.

[0005] In some embodiments, the width ratio of the to-be-rolled edge to the forming chamfer is 1:1.6-1:2.

[0006] In some embodiments, the forming die is a plate structure.

[0007] In some embodiments, the forming die is a stainless steel plate.

[0008] In some embodiments, the notch on the stainless steel thin-walled part is "U" shaped.

[0009] In another aspect, the present application also provides a stainless steel thin-walled part edge rolling forming method, which is based on the above-mentioned forming die and comprises the following steps:

[0010] S1: placing the forming die on the stainless steel thin-walled part, and aligning the inner contour of the forming groove with the outer contour of the to-be-rolled edge;

[0011] S2: Fix the forming die and the stainless steel thin-walled part, and knock the to-be-rolled hem until the to-be-rolled hem is in contact with the slope of the forming chamfer;

[0012] S3: Take out the forming die, and continue to knock the to-be-rolled hem until the to-be-rolled hem is flattened, and the hem forming of the stainless steel thin-walled part is completed.

[0013] In some embodiments, in the step S2, specifically comprising: clamping the forming die and the stainless steel thin-walled part at the same time by using a vice, so as to fix the forming die and the stainless steel thin-walled part.

[0014] In some embodiments, in the step S2, the notch is arranged upward.

[0015] In some embodiments, in the step S2, specifically comprising: using a small flat shovel to knock the to-be-rolled hem until the to-be-rolled hem is in contact with the slope of the forming chamfer.

[0016] In some embodiments, in the step S3, specifically comprising: taking out the forming die, and using a hammer to continue to knock the to-be-rolled hem until the to-be-rolled hem is flattened, and the hem forming of the stainless steel thin-walled part is completed.

[0017] The application has the following beneficial effects:

[0018] The stainless steel thin-walled part hem forming die and the forming method provided by the application have the following beneficial effects: a forming groove matched with the outer contour of the to-be-rolled hem is arranged on the forming die, and a forming chamfer is arranged at the edge of the forming groove. Therefore, the forming die and the stainless steel thin-walled part are stacked, the inner contour of the forming groove is aligned with the outer contour of the to-be-rolled hem, that is, the inner contour of the forming groove can accurately position the bending part of the to-be-rolled hem, so as to ensure the dimensional accuracy of the hem. Under the limitation of the forming chamfer, the to-be-rolled hem of the stainless steel thin-walled part is knocked until the to-be-rolled hem is in contact with the slope of the forming chamfer, at which time the hem of the stainless steel thin-walled part is semi-formed. Then, the forming die is taken out, and the to-be-rolled hem is continued to be knocked until the to-be-rolled hem is flattened, that is, the hem forming of the stainless steel thin-walled part is completed. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application.

[0020] Figure 1 The structure diagram of the stainless steel thin-walled part provided by the embodiment;

[0021] Figure 2A structure schematic diagram of the edge curling forming die for the stainless steel thin-wall part is provided for the embodiment;

[0022] Figure 3 A structure schematic diagram of the edge curling forming method for the stainless steel thin-wall part is provided for the embodiment Figure 1 ;

[0023] Figure 4 A structure schematic diagram of the edge curling forming method for the stainless steel thin-wall part is provided for the embodiment Figure 2 ;

[0024] Figure 5 A structure schematic diagram of the edge curling forming method for the stainless steel thin-wall part is provided for the embodiment Figure 3 .

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 100-stainless steel thin-wall part, 110-gap, 120-to-be-curling edge, 130-formed edge, 200-forming die, 210-forming groove, 220-forming chamfer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Figure 1 A structure schematic diagram of the edge curling forming method for the stainless steel thin-wall part is provided for the embodiment Figure 1 A gap 110 is provided on the stainless steel thin-wall part 100, and a to-be-curling edge 120 is provided at the edge of the gap 110. The to-be-curling edge 120 has an inner contour and an outer contour. The outer contour is a bending position when curling. The outer contour is a smooth line and cannot have a corner. Specifically, the gap 110 is in a "U" shape in the embodiment. In the related art, when the to-be-curling edge 120 is manually curled, the curling size after forming often cannot meet the design requirement due to the characteristics of the stainless steel plate having large resilience, resulting in poor product forming quality.

[0029] Based on this, the present application provides an edge curling forming die for a stainless steel thin-wall part, Figure 2 A structure schematic diagram of the edge curling forming method for the stainless steel thin-wall part is provided for the embodiment Figure 2The forming mold 200 has a forming groove 210. The inner contour of the forming groove 210 matches the outer contour of the edge to be rolled 120. That is, the inner contour of the forming groove 210 and the outer contour of the edge to be rolled 120 have the same shape and size. The forming groove 210 has a forming chamfer 220 at its edge.

[0030] Therefore, when manually forming the stainless steel thin-walled part 100, the inner contour of the forming groove 210 is first aligned with the outer contour of the edge to be rolled 120, so that the inner contour of the forming groove 210 can accurately position the bending part of the edge to be rolled 120 to ensure the dimensional accuracy of the edge and thus ensure the forming quality. Then, the edge to be rolled 120 is bent along the inner contour of the forming groove 210 toward the forming chamfer 220 until the edge to be rolled 120 fits against the slope of the forming chamfer 220. At this time, the stainless steel thin-walled part 100 is partially formed and the dimensional accuracy of the edge has been ensured. Next, the forming mold 200 is taken out, and the edge to be rolled 120 is bent until it is completely rolled.

[0031] Furthermore, the contour of the forming chamfer 220 is the same as that of the rolled edge 120. In order to make the rolled edge 120 fully fit the slope of the forming chamfer 220, the width of the forming chamfer 220 needs to be greater than the width of the rolled edge 120. Specifically, the width ratio of the rolled edge 120 to the forming chamfer 220 is 1:1.6-1:2.

[0032] Preferably, in this embodiment, the size of the chamfer 220 can be 0.75mm×3mm~0.85mm×5mm, and the forming mold 200 is a plate structure to facilitate stacking with the stainless steel thin-walled part 100. Specifically, the forming mold 200 is a stainless steel plate.

[0033] Based on the same inventive concept, this application also provides a method for forming a rolled edge of a thin-walled stainless steel part 100, which is implemented based on the forming mold 200 described above. Figure 3 A schematic diagram of the stainless steel thin-walled part crimping forming method provided in this embodiment. Figure 1 , Figure 4 A schematic diagram of the stainless steel thin-walled part crimping forming method provided in this embodiment. Figure 2 , Figure 5 A schematic diagram of the stainless steel thin-walled part crimping forming method provided in this embodiment. Figure 3 , combined Figures 3-5 The method includes:

[0034] S1: Stack the forming mold 200 and the stainless steel thin-walled part 100, and align the inner contour of the forming groove 210 with the outer contour of the edge to be rolled 120 (e.g., Figure 3 (as shown);

[0035] Since the edge 120 to be crimped is folded from the outer contour, the inner contour of the forming groove 210 can accurately position the bending part of the edge 120 to be crimped after the inner contour of the forming groove 210 is aligned with the outer contour of the edge 120 to be crimped, so as to ensure the dimensional accuracy of the crimping and the forming quality.

[0036] S2: Fix the forming die 200 and the stainless steel thin-walled part 100, and knock the edge 120 to be crimped until the edge 120 to be crimped is attached to the slope of the forming chamfer 220 (as shown in FIG. 2B). Figure 4

[0037] In this embodiment, the forming die 200 and the stainless steel thin-walled part 100 can be clamped to the vice, and the vice clamps the lower part of the forming die 200 and the stainless steel thin-walled part 100, so as to fix the forming die 200 and the stainless steel thin-walled part 100. In the specific implementation, the notch of the stainless steel thin-walled part is arranged upward, that is, the forming die 200 and the stainless steel thin-walled part 100 are vertically placed on the platform, the vice clamps the lower part of the forming die 200 and the stainless steel thin-walled part 100, and the notch is arranged at the upper part of the stainless steel thin-walled part, so as to facilitate the knocking of the edge 120 to be crimped.

[0038] According to the size of the edge 120 to be crimped and the forming chamfer 220, a small flat shovel can be used to knock the edge 120 to be crimped in this step, so that the edge 120 to be crimped is completely attached to the slope of the forming chamfer 220, and then the edge 120 to be crimped is bent and formed around the forming chamfer 220 on the forming die 200 to form a semi-finished product.

[0039] S3: Take out the forming die 200, continue to knock the edge 120 to be crimped, until the edge 120 to be crimped is knocked flat, and the crimping of the stainless steel thin-walled part 100 is completed (as shown in FIG. 2C). Figure 5

[0040] The thin-walled part semi-finished product after bending and forming and the forming die 200 are taken out from the vice, the forming die 200 is removed, and the thin-walled part semi-finished product is placed on the platform. Since the dimensional accuracy of the crimping has been ensured in step S3, only the edge 120 to be crimped needs to be knocked flat in this step, that is, the forming crimping 130 is formed, so a larger hammer can be used to knock flat.

[0041] ​​The application provides a stainless steel thin-wall part edge forming die and a forming method. The forming die 200 is provided with a forming groove 210 matched with the outer contour of the to-be-rolled edge 120, and the edge of the forming groove is provided with a forming chamfer 220. Therefore, the forming die 200 is stacked with the stainless steel thin-wall part 100, the inner contour of the forming groove 210 is aligned with the outer contour of the to-be-rolled edge 120, that is, the inner contour of the forming groove 210 can accurately position the bending part of the to-be-rolled edge 120, so that the size accuracy of the edge can be ensured. Under the limiting of the forming chamfer 220, the to-be-rolled edge 120 of the stainless steel thin-wall part 100 is knocked until the to-be-rolled edge 120 is attached to the slope of the forming chamfer 220, at this time, the edge of the stainless steel thin-wall part 100 is semi-formed, then the forming die 200 is taken out, the to-be-rolled edge 120 is continuously knocked until the to-be-rolled edge 120 is knocked flat, that is, the edge of the stainless steel thin-wall part 100 is formed.

[0042] Although preferred embodiments of the application have been described herein, after additional modifications and changes will be made by those skilled in the art once they get the basic creative concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the modifications and changes falling within the scope of the application.

[0043] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims

1. A method for forming the edge of thin-walled stainless steel parts, characterized in that, The forming method is implemented based on a stainless steel thin-walled part edge-rolling forming mold. The stainless steel thin-walled part has a notch, which is U-shaped. An edge to be rolled is located at the edge of the notch. The forming mold is a stainless steel plate and has a forming groove. The inner contour of the forming groove matches the outer contour of the edge to be rolled, and a forming chamfer is located at the edge of the forming groove. The width ratio of the edge to be rolled to the forming chamfer is 1:1.6-1:

2. The method includes: S1: Stack the forming mold and the stainless steel thin-walled part, and align the inner contour of the forming groove with the outer contour of the edge to be rolled. S2: Fix the forming mold and the stainless steel thin-walled part, and tap the edge to be rolled until the edge to be rolled fits against the slope of the forming chamfer; S3: Take out the forming mold and continue to tap the edge to be rolled until the edge to be rolled is flattened, and the stainless steel thin-walled part is rolled.

2. The method for forming the edge of a thin-walled stainless steel part as described in claim 1, characterized in that, In step S2, the specific steps include: using a vise to clamp both the forming mold and the stainless steel thin-walled part to fix them in place.

3. The method for forming the edge of a thin-walled stainless steel part as described in claim 2, characterized in that, In step S2, the notch of the stainless steel thin-walled component is positioned facing upwards.

4. The method for forming the edge of a thin-walled stainless steel part as described in claim 1, characterized in that, Step S2 specifically includes: using a small flat chisel to tap the edge to be rolled until the edge to be rolled fits into the slope of the chamfer.

5. The method for forming the edge of a thin-walled stainless steel part as described in claim 4, characterized in that, Step S3 specifically includes: taking out the forming mold, using a hammer to continue striking the edge to be rolled until the edge to be rolled is flattened, and the stainless steel thin-walled part is rolled.

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