Arc bending device

Abstract

The utility model relates to an arc bending device which comprises an upper die, a lower die, a connecting support and a fixing support, the upper die is installed on a pressing portion of a bending machine through the connecting support, and the lower die is installed on a fixing portion of the bending machine through the fixing support. The upper die is provided with a convex arc-shaped bending surface, the lower die is provided with a concave arc-shaped bending surface, and the convex arc-shaped bending surface is matched with the concave arc-shaped bending surface. The arc bending device is simple in structure, easy to install and low in application threshold, and the dependency degree of enterprises on expensive equipment is reduced; according to the arc bending device disclosed by the utility model, the convex-concave matched double-side arc surface bending design is adopted, so that the bending angle of each part of the bending part can be accurately controlled, the bending pressure is dispersed to each part of the arc surface, and the bending indentation is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to an arc bending device for metal parts. Background Technology

[0002] In metal processing, circular bending is an important technique, and with the continuous development of the metal processing field, the demand for circular bending technology is also increasing. Traditional circular bending devices are complex in structure, require high precision, are difficult to manufacture, and are costly, making it difficult to meet the low-cost, high-efficiency processing needs of some small businesses and individuals. In existing technology, three-point bending devices are commonly used to bend metal parts, but three-point bending devices have poor circular bending precision, making it difficult to accurately bend different parts of the arc, and are prone to causing indentations on the bending surface. Therefore, there is a need for a high-efficiency, precise, low-cost, and easily installable indentation-free circular bending device to meet the processing requirements of metal parts. Summary of the Invention

[0003] Therefore, it is necessary to provide an efficient, accurate, low-cost, and easy-to-install indentation-free arc bending device to address the aforementioned technical problems.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model discloses an arc bending device, including an upper die, a lower die, a connecting bracket, and a fixed bracket. The upper die is installed on the pressing part of the bending machine through the connecting bracket, and the lower die is installed on the fixed part of the bending machine through the fixed bracket. The upper die is provided with a convex arc bending surface, and the lower die is provided with a concave arc bending surface. The convex arc bending surface and the concave arc bending surface match each other.

[0006] In one embodiment, both the convex arc-shaped bending surface and the concave arc-shaped bending surface are non-discontinuous arc surfaces.

[0007] In one embodiment, the radius of the concave curved bending surface is greater than the radius of the convex curved bending surface.

[0008] In one embodiment, the radius of the concave arc-shaped bending surface is greater than or equal to the radius of the convex arc-shaped bending surface plus the thickness of the bent part.

[0009] In one embodiment, the lower mold includes a first lower mold portion and a second lower mold portion of the same shape, which are connected by a connector.

[0010] In one embodiment, the fixing bracket is a T-shaped structural member, the fixing part is provided with a mounting groove that matches the large end of the T-shaped structural member, the small end of the T-shaped structural member is provided with a strip groove, and the first lower mold part and the second lower mold part are fixed in the strip groove by a connector.

[0011] In one embodiment, the upper mold includes a first upper mold portion and a second upper mold portion of the same shape, which are connected by a connector.

[0012] In one embodiment, the connector includes a bolt and a nut that mates with the bolt.

[0013] In one embodiment, the connector further includes a spring washer and a flat washer, which are fitted together with the bolt for installation.

[0014] In one embodiment, the lower die is provided with a bending part positioning mark.

[0015] The technical solution adopted in this utility model can achieve the following beneficial effects:

[0016] The circular arc bending device disclosed in this utility model has a simple structure, is easy to install, has a low application threshold, and reduces enterprises' dependence on expensive equipment. The circular arc bending device disclosed in this utility model adopts a double-sided circular arc surface bending design with matching convex and concave surfaces, which can accurately control the bending angle at each part of the bending section and distribute the bending pressure to each part of the circular arc surface, effectively eliminating bending indentations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the arc bending device disclosed in an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of another state of the arc bending device disclosed in this utility model embodiment;

[0019] Explanation of reference numerals in the attached figures:

[0020] 100 - Upper die, 110 - Convex arc-shaped bending surface, 121 - First upper die part, 122 - Second upper die part;

[0021] 200 - Lower die, 210 - Concave arc-shaped bending surface, 221 - First lower die part, 222 - Second lower die part;

[0022] 300-Connecting bracket, 400-Fixed bracket, 410-Strip groove, 500-Bent part, 600-Connecting part. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0024] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] This utility model discloses an arc bending device, such as... Figure 1 , Figure 2 As shown, the arc bending device includes an upper die 100 and a lower die 200. The upper die 100 is positioned above the lower die 200, and their working parts are positioned opposite each other. The upper die 100 is equipped with a bending forming cutter for applying bending force to the workpiece, and the lower die 200 is equipped with a support groove for supporting the workpiece. The upper die 100 and the lower die 200 are mounted on a bending machine or press, with the bending forming cutter and the support groove positioned opposite each other. The bent part 500 can be placed on the support groove. When the bending machine or press is started, the upper die 100 is driven to move towards the lower die 200. The bending forming cutter applies pressure to the bent part 500, and the support groove provides support to facilitate the bending operation.

[0027] Specifically, the upper die 100 can be installed on the pressing part of the bending machine or press via the connecting bracket 300, and the lower die 200 can be installed on the fixing part of the bending machine or press via the fixing bracket 400. The upper die 100 has a convex arc-shaped bending surface 110 on the side opposite to the lower die 200, and the lower die 200 has a concave arc-shaped bending surface 210 on the side opposite to the upper die 100. The convex arc-shaped bending surface 110 can be used as a bending forming tool, and the concave arc-shaped bending surface 210 can be used as a support groove. Both the convex arc-shaped bending surface 110 and the concave arc-shaped bending surface 210 are non-discontinuous arc surfaces and they match each other. The two can apply a bending force to both the upper and lower surfaces of the bent part 500, accurately control the bending angle at each part of the bending part, and distribute the bending pressure to each part of the arc surface, effectively preventing bending marks.

[0028] Furthermore, the radii of the concave curved bending surface 210 and the convex curved bending surface 110, as well as the thickness of the bent part 500, should be matched. Specifically, the radius of the concave curved bending surface 210 ≥ the radius of the convex curved bending surface 110 + the thickness of the bent part. Preferably, the radius of the concave curved bending surface 210 = the radius of the convex curved bending surface 110 + the thickness of the bent part.

[0029] Furthermore, the support groove may be provided with positioning marks for positioning the bent part 500, preferably located on the side of the support groove.

[0030] Furthermore, the lower mold 200 includes a first lower mold portion 221 and a second lower mold portion 222. Two sheet metal parts of the same shape and size can be cut from sheet metal material using a laser cutting machine to serve as the first lower mold portion 221 and the second lower mold portion 222. The first lower mold portion 221 and the second lower mold portion 222 are aligned and connected and fixed using two connectors 600. Correspondingly, the upper mold 100 includes a first upper mold portion 121 and a second upper mold portion 122. Two sheet metal parts of the same shape and size can be cut from sheet metal material using a laser cutting machine to serve as the first upper mold portion 121 and the second upper mold portion 122. The first upper mold portion 121 and the second upper mold portion 122 are aligned and connected and fixed using three connectors 600.

[0031] Furthermore, the first upper die 121 and the second upper die 122 can be connected to the connecting bracket via a larger connector 600. The fixed bracket 400 can be a T-shaped structure, with a slot 410 at the small end of the T-shaped structure. The interconnected first lower die 221 and second lower die 222 are placed within the slot 410 and fixed using five connectors 600. The fixing part of the bending machine or press is provided with a mounting groove that matches the large end of the T-shaped structure. The lower die 200 is installed into the mounting groove via this T-shaped structure and is limited and connected to the mounting groove.

[0032] Furthermore, each connector 600 can be a bolt-type connection component, specifically including a bolt and a nut that matches the threaded section of the bolt, for fastening connection via the bolt and nut. Additionally, connector 600 may also include spring washers and flat washers, which cooperate with the bolt and nut for connection and fastening.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A circular arc bending device, characterized in that, It includes an upper die, a lower die, a connecting bracket, and a fixed bracket. The upper die is mounted on the pressing part of the bending machine via the connecting bracket, and the lower die is mounted on the fixed part of the bending machine via the fixed bracket. The upper die is provided with a convex arc-shaped bending surface, and the lower die is provided with a concave arc-shaped bending surface, the convex arc-shaped bending surface and the concave arc-shaped bending surface are matched with each other.

2. The arc bending device according to claim 1, characterized in that, Both the convex arc-shaped bending surface and the concave arc-shaped bending surface are non-discontinuous arc surfaces.

3. The arc bending device according to claim 2, characterized in that, The radius of the concave arc-shaped bending surface is greater than the radius of the convex arc-shaped bending surface.

4. The arc bending device according to claim 3, characterized in that, The radius of the concave arc-shaped bending surface is greater than or equal to the radius of the convex arc-shaped bending surface plus the thickness of the bent part.

5. The arc bending device according to claim 1, characterized in that, The lower mold includes a first lower mold part and a second lower mold part with the same shape, and the first lower mold part and the second lower mold part are connected by a connector.

6. The arc bending device according to claim 1, characterized in that, The fixed bracket is a T-shaped structural component. The fixed part is provided with an installation groove that matches the large end of the T-shaped structural component. The small end of the T-shaped structural component is provided with a strip groove, and the lower mold is disposed in the strip groove.

7. The arc bending device according to claim 6, characterized in that, The upper mold includes a first upper mold part and a second upper mold part with the same shape, and the first upper mold part and the second upper mold part are connected by a connector.

8. The arc bending device according to claim 5 or 7, characterized in that, The connector includes a bolt and a nut that matches the bolt.

9. The arc bending device according to claim 8, characterized in that, The connector also includes a spring washer and a flat washer, which are used in conjunction with the bolt for installation.

10. The arc bending device according to claim 1, characterized in that, The lower die is equipped with positioning marks for bending parts.

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