CN220111996U - Arc bending tooling and arc bending equipment having the same - Google Patents

Abstract

The application relates to an arc bending tool and arc bending equipment having the same. The arc bending tool includes a master mold and a bending chain. The mold has a connected supporting surface and a bending surface; the arc chain is arranged on the master mold. The curved chain includes a connecting piece and a plurality of curved pieces arranged on one side of the connecting piece. The plurality of curved pieces are connected in sequence in a direction away from the connecting piece. The connecting piece is connected to its adjacent curved pieces. There is a rotating assembly, and adjacent arc-shaped parts are connected through the rotating assembly. The arc-bending chain uses multiple rotating assemblies to make multiple arc-shaped parts fit on the arc-shaped surface in sequence. This arc bending tooling solves the problem of difficult manual processing.

Description

Arc bending tooling and arc bending equipment having the same

Technical field

The present application relates to the field of arc bending equipment, and in particular, to an arc bending tool and arc bending equipment having the same.

Background technique

In the current bus industry, due to people's pursuit of body lines, the proportion of curved surfaces on the bus body has increased, resulting in an increase in the number of skeleton curvature workpieces. Some of the water troughs need to be curved according to the skeleton curvature. In order to prevent the body from leaking, buses The design strength required for the frame and water channel is relatively high. The existing preparation method of arc bending through artificial convection channels is difficult to process, has poor precision, and is difficult to meet production standards. After production is completed, it is often reworked, resulting in a waste of manpower and material resources.

Utility model content

This application provides an arc bending tooling and arc bending equipment having the same, to solve the problem of difficulty in manual processing.

In the first aspect, this application provides an arc bending tool, including:

A master mold having a connected support surface and a curved surface; and

An arc chain is provided on the master mold. The arc chain includes a connecting member and a plurality of arc members arranged on one side of the connecting member. The plurality of arc members are located away from the connecting member. are connected sequentially in the direction, a rotating assembly is connected between the connecting piece and the adjacent arc-shaped parts, the adjacent arc-shaped parts are connected by the rotating assembly, and the arc-curved chain passes through a plurality of The rotating assembly causes a plurality of the arc-shaped parts to fit onto the arc-shaped surface in sequence.

In a possible implementation, the rotating component includes a first assembly part and a second assembly part that are connected and rotationally matched, and the first assembly part and the second assembly part are respectively fixedly arranged on the connected The connecting piece and the arc-shaped member, and the first assembly part and the second assembly member are respectively fixedly mounted on the two adjacent arc-shaped members.

In a possible implementation, the connecting end of the connecting piece is provided with a connecting part, the connecting part includes a first connecting part and a second connecting part, and the first connecting part is used to connect with the first device. The second connecting part is used to match the second assembly part, and the connecting parts are provided on opposite sides of each of the arc-shaped parts, and each of the arc-shaped parts is centrally symmetrical. Structure settings.

In a possible implementation, the first assembly part and the first connection part are embedded in each other, the second assembly part and the second connection part are embedded in each other, and the first assembly part and the second connection part are embedded in each other. The outer surfaces of the connecting piece and the arc-shaped piece are flush, and the second assembly piece is flush with the outer surfaces of the connecting piece and the arc-shaped piece.

In a possible implementation, the first assembly part includes a connecting bolt, and the second assembly part is a connecting nut that matches the first assembly part.

In a possible implementation, both the first connecting part and the second connecting part have an opening structure, and the opening edge of the first connecting part is adapted to the edge shape of the connecting bolt, and the third connecting part has an opening shape. The opening edge of the two connecting parts is in the shape of a semicircle.

In a possible implementation, it also includes a support assembly connected to the first assembly or the second assembly, and the support assembly is disposed on the end surface of the arc member. central position.

In a possible implementation, the arc-shaped chain is used to cooperate with a trough-shaped member, a trough-shaped opening is provided on the trough-shaped member, and the trough-shaped opening is engaged with the arc-shaped chain, so The outer surface of the curved chain is used to support the inner wall surface of the slot-shaped opening.

In a possible implementation manner, the trough-shaped member is closely formed with the arc-curved chain, and is arc-curved on the arc-curved chain through a red process.

In a second aspect, this application provides arc bending equipment, including: an arc bending tooling as described in the first aspect.

Compared with the existing technology, the above technical solutions provided by the embodiments of the present application have the following advantages:

In the arc bending tooling and the arc bending equipment provided by this embodiment, the connecting parts of the arc bending chain are pressed against the support surface of the master mold, and the multiple arc parts of the arc bending chain are pressed against each other by rotating components. On the curved surface of the mold, the curved chain is used to match the trough-shaped piece. The trough-shaped piece is inserted into the curved chain from above, and the trough-shaped piece can be processed through various processing methods such as heat treatment. Carry out forming processing to fully fit the trough-shaped parts and the curved chain, thereby realizing the arc-bending of the trough-shaped parts. In this way, the difficulty of processing can be reduced, and the bending accuracy of the trough-shaped parts can be guaranteed by relying on the template at the bottom of the bending chain, and the bending chain can bend freely to meet the production needs of multiple arcs.

Description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor.

One or more embodiments are exemplified by the pictures in the corresponding drawings. These illustrative illustrations do not constitute limitations to the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings are not intended to be limited to scale.

Figure 1 is a schematic diagram of the overall structure of an arc bending tool provided by an embodiment of the present application.

Figure 2 is a schematic structural diagram of a template in an arc bending tool provided by an embodiment of the present application.

Figure 3 is a schematic structural diagram of an arc-bending chain in an arc-bending tool provided by an embodiment of the present application.

Figure 4 is a schematic structural diagram of a connector in an arc bending tool provided by an embodiment of the present application.

Figure 5 is a schematic structural diagram of an arc-bending piece in an arc-bending tool provided by an embodiment of the present application.

Explanation of reference symbols:

1. Model; 11. Supporting surface; 12. Curved surface;

2. Curved chain; 21. Connecting piece; 22. Curved piece; 23. First connecting part; 24. Second connecting part;

3. Rotating components; 4. Groove-shaped parts.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the application. Furthermore, this application may repeat reference numbers and/or letters in different examples. This repetition is for purposes of simplicity and clarity and does not by itself indicate a relationship between the various embodiments and/or arrangements discussed.

For ease of description, spatial relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures. These relative terms are, for example, "internal", " "Outside", "inside", "outside", "under", "under", "above", "above", "front", "back", etc. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the position of the device in the figure is flipped, the posture changes, or the state of motion changes, then these directional indications will also change accordingly, for example: described as "under other elements or features" or "under other elements" Elements that are "below" or "below" the other elements or features will then be oriented "above" or "above" the other elements or features. Thus, the example term "below" may include an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In order to solve the problem of the existing method of preparing arcs through artificial convection water tanks, which is difficult to process, has poor precision, and is difficult to meet production standards, and is often reworked after the production is completed, resulting in a waste of manpower and material resources; the arc bending provided by this application Tooling can reduce the difficulty of processing. The master mold located at the bottom of the bending chain can ensure the bending accuracy of the trough-shaped parts, and the bending chain can bend freely to meet the production needs of multiple arcs.

Referring to Figures 1-5, the embodiment of the present application provides an arc bending tool, including:

The master 1 has a connected supporting surface 11 and a curved surface 12; and

The curved chain 2 is provided on the master 1. The curved chain 2 includes a connecting piece 21 and a plurality of curved parts 22 arranged on one side of the connecting piece 21. The plurality of curved parts 22 They are connected sequentially in the direction away from the connecting piece 21. The rotating assembly 3 is connected between the connecting piece 21 and its adjacent arc-shaped parts 22. The adjacent arc-shaped parts 22 are connected through the The rotating components 3 are connected, and the arc-bending chain 2 uses a plurality of the rotating components 3 to make a plurality of the arc-bending parts 22 fit on the arc-shaped surface 12 in sequence.

By placing the connecting piece 21 of the curved chain 2 against the supporting surface 11 of the master 1, the plurality of curved parts 22 of the curved chain 2 are pressed against the curved surface 12 of the master 1 by rotating the assembly 3. , the curved arc chain 2 is used to match the trough-shaped component 4. The trough-shaped component 4 is inserted into the curved arc chain 2 from the top of the curved arc chain 2, and the trough-shaped component 4 can be formed through various processing methods such as heat treatment. Processing, so that the trough-shaped member 4 and the arc-bending chain 2 are fully bonded and formed, thereby realizing the arc-bending of the trough-shaped member 4. In this way, the processing difficulty can be reduced, and the arc bending accuracy of the trough-shaped part 4 can be guaranteed by relying on the template 1 located at the bottom of the arc-bending chain 2, and the arc-bending chain 2 can bend arcs freely to meet the production requirements of multiple arcs.

The side of the master 1 used to match with the curved arc chain 2 is the mating surface, and the mating surface is divided into a supporting surface 11 and a curved surface 12 . In this application, the mating surface of the master 1 is the upper surface of the master 1. The master 1 matches the curved arc chain 2 through its upper surface, and at the same time, it can also ensure the stability of the curved arc chain 2 on the master 1. sex. When making trough-shaped parts 4 with different curvatures, you only need to replace the master 1, and select the master 1 with the appropriate curved surface 12 to fit against the curved chain 2. The component 22 is overlapped on the master mold 1 so that the channel-shaped component 4 with any curvature can be produced.

Referring to Figures 1 to 5, the curved arc chain 2 is used to cooperate with the trough-shaped component 4. The trough-shaped component 4 is provided with a slot-shaped opening, and the slot-shaped opening is snapped onto the curved arc chain 2. , the outer surface of the curved arc chain 2 is used to support the inner wall surface of the groove-shaped opening; the groove-shaped opening of the groove-shaped member 4 is set downward, and the groove-shaped member 4 is directed downward from the top of the curved arc chain 2 Move, that is, move the trough-shaped component 4 from above the curved arc chain 2 toward the direction close to the curved arc chain 2 until the trough-shaped component 4 is fastened to the curved arc chain 2, and then process the trough-shaped component 4 so that the groove The shaped part 4 can be bent according to the curvature of the bending chain 2, thereby realizing the curved shape of the grooved part 4.

The trough-shaped member 4 is formed in close contact with the arc-shaped chain 2, and is curved on the arc-shaped chain 2 through the red process; the inner wall of the trough-shaped opening is supported by the peripheral side of the arc-shaped chain 2, and the groove is The opposite sides of the shaped part 4 are respectively stuck on the outer wall surface of the curved chain 2, and after the red treatment, the trough-shaped part 4 will be bent according to the bending arc of the master 1, and fit the bend according to the shape of the master 1 Arc forming can also ensure the overall shape of the grooved member 4 after bending. For example, in this application, the trough-shaped member 4 is formed and prepared using the red process. Of course, in actual use, the trough-shaped member 4 can also be heated and deformed through other heat treatment methods.

The rotating assembly 3 includes a first assembly part and a second assembly part that are connected and rotationally matched. The first assembly part and the second assembly part are respectively fixedly arranged on the connected connecting part 21 and the connected part. On the curved arc member 22, the first assembly part and the second assembly member are respectively fixedly arranged on the two adjacent curved members 22. In this application, for convenience of description, it is assumed that the first assembly part is provided on the connecting member 21 and the second assembly part is provided on the arc member 22 adjacent to the connecting member 21. The first assembly part and the second assembly part are are connected, and the first assembly part and the second assembly part are rotationally matched, so the first assembly part can be rotated relative to the second assembly part; therefore, when the position of the connecting part 21 remains unchanged, the second assembly part can also be positioned relative to the second assembly part. When the first assembly part is rotated, under the rotation of the first assembly part, the first assembly part drives the arc member 22 to move synchronously; therefore, the arc member 22 adjacent to the connecting member 21 can be driven by the rotating component 3 , rotated around the connecting piece 21. In the same way, it can be seen that between two arc members 22 connected by the rotating assembly 3, one of the arc members 22 can rotate relative to the other arc member 22; in the case of multiple arc members 22 connected, Its whole body can be bent to form an arc-shaped structure, so that the curved arc chain 2 and the master mold 1 can fit together.

The connecting end of the connecting piece 21 is provided with a connecting part. The connecting part includes a first connecting part 23 and a second connecting part 24. The first connecting part 23 is used to cooperate with the first assembly part, so The second connecting portion 24 is used to cooperate with the second assembly. The connecting portions are provided on opposite sides of each arc-shaped component 22, and each arc-shaped component 22 is arranged in a centrally symmetrical structure. . By providing connecting parts on the connecting part 21 and the arc part 22, the rotating component 3 cooperates with the connecting parts, thereby facilitating the installation of the rotating component 3 and ensuring the installation position of the rotating component 3. Similarly, since the opposite sides of the curved arc member 22 are used to achieve connection, and it is also necessary to ensure the stable rotation of the curved arc chain 2 as a whole, the connecting parts of the two ends of the curved arc chain 2 in the same length direction are respectively the first connecting parts. 23 and the second connecting part 24; the connecting parts of the two ends of the arc chain 2 in the same width direction are the first connecting part 23 and the second connecting part 24 respectively, so that the entire arc member 22 is arranged in a centrally symmetrical structure, so that Ensure the reliability and stability of rotation.

Referring to Figures 1-5, the first assembly part and the first connecting part 23 are embedded and matched, the second assembly part and the second connecting part 24 are embedded and matched, and the first assembly part and the second connecting part 24 are embedded and matched. The outer surfaces of the connecting piece 21 and the arc-shaped piece 22 are flush, and the second assembly is flush with the outer surfaces of the connecting piece 21 and the arc-shaped piece 22; through the first assembly and the third The first assembly part is embedded in the first connection part 23 through the embedding and cooperation of the connecting part 23. The second assembly part and the second connection part 24 are embedded in the second assembly part so that the second assembly part is embedded in the first connection part 23. In the second connection part 24, after being connected by the rotating assembly 3, the first assembly part and the second assembly part are embedded between the connection positions of the two adjacent parts, and the first assembly part and the second assembly part are connected by the first assembly part and the second assembly part. The outer surface of the assembly is flush with the outer surfaces of the curved piece 22 and the connecting piece 21, thereby ensuring that the outer surface of the entire curved chain 2 is flush, thereby ensuring that after the grooved member 4 is fastened to the curved chain 2, The flatness of the inner wall surface of the channel member 4 can be ensured; in addition, the opposite sides of the curved arc chain 2 are in contact with the stop surface of the channel member 4, which can also ensure that the stop mouth of the channel member 4 is not deformed.

The first assembly part includes a connecting bolt, and the second assembly part is a connecting nut that matches the first assembly part; through the screw connection of the connecting nut and the connecting bolt, both the first assembly part and the third assembly part can be ensured. The connection between the two assembly parts, as well as the rotational fit relationship, and the cooperation between the connecting nut and the connecting bolt also make the first assembly part and the second assembly part detachable. When the arc chain 2 occurs When the damage requires repair or replacement, by screwing the first assembly part and the second assembly part and disassembling the connecting nut from the connecting bolt, the rotating assembly 3, the arc member 22 and/or the connecting member 21 can be replaced. Replace or repair, reduce costs and improve efficiency.

Of course, the first assembly part and the second assembly part can also be connecting bearings. One of the connecting bearings is fixed with a connecting shaft, and the other end of the connecting shaft is rotationally connected to the other connecting bearing. The two connecting bearings are respectively arranged on the connecting piece. 21 and the adjacent curved parts 22; and two connecting bearings are respectively provided on the two adjacent curved parts 22. Through the rotational cooperation between the connecting bearing and the connecting shaft, the components connected to the connecting bearing can be driven to rotate relative to each other, thereby realizing the bending of the arc chain 2 .

Both the first connecting part 23 and the second connecting part 24 have an opening structure. The opening edge of the first connecting part 23 matches the edge shape of the connecting bolt. The opening of the second connecting part 24 The edge is in the shape of a semicircle; the first assembly part and the second assembly part are embedded in the interior through the opening structure, thereby ensuring the flatness of the outer surface of the curved arc chain 2. The opening edge of the first connecting part 23 is adapted to the edge shape of the connecting bolt. For example, the opening edge of the first connecting part 23 is in a semi-hexagonal shape, and the connecting bolt can be an M8 type bolt. Correspondingly, The connecting nut is an M8 type nut. The opening edge of the first connecting part 23 is adapted to the connecting bolt, thereby achieving a tight connection between the connecting bolt and the first connecting part 23. At the same time, the other half of the connecting bolt is on the second connecting part 24. During the rotation process, it can cooperate with the second connecting part 24 and set the second connecting part 24 in a semi-circular arc shape, thereby ensuring the reliability of the rotation of the second connecting part 24 and avoiding interference between the second connecting part 24 and the connecting bolt. Condition.

The connecting bolts are tailor-welded at the half-hexagonal notch of the connecting piece 21, and at the half-hexagonal notch of the curved arc piece 22 adjacent to the connecting piece 21, and opposite to the half-hexagonal notch of the connecting piece 21, the connecting bolts are located at the top of the curved arc piece 22. Tailor weld the nut at the semi-hexagonal notch; and by analogy, weld the connecting bolt and connecting nut to the curved arc piece 22, and polish the surfaces of the connecting bolt and connecting nut smooth so that the welding point is consistent with the plane height; The bolts mate with corresponding connecting nuts to form a rotating hinge.

Among them, the template 1 can be an arc-shaped square tube, and its curvature is used to bend the straight rod according to the required curvature of the channel member 4 to meet the arc standard. The connecting piece 21 can be a connecting pipe, and the cross-sectional shape of the connecting pipe can be adapted according to the groove opening of the groove-shaped member 4; the arc-shaped piece 22 can be a curved arc pipe, and the cross-sectional shape of the curved pipe is the same as that of the connecting pipe. And the size is the same. Since the connecting part 21 and the arc-curved part 22 are provided with connecting parts, the connecting part can be formed on the connecting part 21 and the arc-curved part 22 by laser cutting. The above is only an exemplary description of this embodiment, and other processing methods or shapes may also be used in actual use. Of course, the number of arc-bending members 22 is not limited in this embodiment and can be increased or decreased according to the actual arc length. In this embodiment, seven arc-bending members 22 are provided as an example.

Of course, it also includes a support assembly, which is connected to the first assembly or the second assembly, and is disposed at the middle position of the end surface of the arc member 22; through the support The connecting piece 21 achieves the effect of overlapping support. For example, the support assembly may be a support nut. For example, the support nut is an M10 nut. The M10 nut is screwed into the M8 bolt for overlap, thereby achieving overlap support.

Referring to Figures 1 to 5, in summary, with the arc bending tooling and arc bending chain 2 provided in this embodiment, different groove-shaped arc bending parts 22 can be produced according to the required arc, and only the arc shape of the template 1 needs to be changed. , the curved arc chain 2 is overlapped on the master mold 1 to facilitate the production of a trough-shaped member 4 with any arc. In addition, the curved chain 2 rests on the master 1 along an arc, and its curvature is the fixed curve of the master 1. Both sides of the curved chain 2 are the stop support surfaces 11 of the grooved member 4, and the two sides of the grooved member 4 are The stop is stuck on the curved arc chain 2 and is processed red. It is bent according to the curvature of the template 1 underneath it and fits the arc shape according to the shape of the template 1. It can also prevent the stop deformation of the channel piece 4. This tooling The structure is simple and easy to prepare, while ensuring production standards and precision. It can also be used as a curved inspection tooling.

Referring to Figures 1-5, embodiments of the present application provide arc bending equipment, including the arc bending tooling described in the previous embodiment.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The terms "comprises", "includes", "contains" and "having" are inclusive and thus indicate the presence of stated features, steps, operations, elements and/or parts but do not exclude the presence or addition of one or Various other features, steps, operations, elements, components, and/or combinations thereof. The method steps, procedures, and operations described herein are not to be construed as requiring that they be performed in the particular order described or illustrated, unless an order of performance is expressly indicated. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections shall not be referred to as restricted by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The above descriptions are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A kind of arc bending tool, characterized in that it includes: A master mold having a connected support surface and a curved surface; and An arc chain is provided on the master mold. The arc chain includes a connecting member and a plurality of arc members arranged on one side of the connecting member. The plurality of arc members are located away from the connecting member. are connected sequentially in the direction, a rotating assembly is connected between the connecting piece and the adjacent arc-shaped parts, the adjacent arc-shaped parts are connected by the rotating assembly, and the arc-curved chain passes through a plurality of The rotating assembly causes a plurality of the arc-shaped parts to fit onto the arc-shaped surface in sequence. 2. The arc bending tooling according to claim 1, wherein the rotating assembly includes a first assembly part and a second assembly part that are connected and rotationally matched, and the first assembly part and the second assembly part The accessories are respectively fixedly provided on the connected connecting piece and the arc-shaped component, and the first assembly part and the second assembly component are respectively fixedly provided on the two adjacent arc-shaped components. 3. The arc bending tool according to claim 2, characterized in that the connecting end of the connecting piece is provided with a connecting part, the connecting part includes a first connecting part and a second connecting part, the first connecting part The second connecting part is used to cooperate with the first assembly part, and the second connecting part is used to cooperate with the second assembly part. The connecting parts are provided on opposite sides of each arc-shaped part, and each The arc-shaped parts are arranged in a centrally symmetrical structure. 4. The arc bending tool according to claim 3, characterized in that the first assembly part and the first connecting part are embedded and matched, and the second assembly part and the second connecting part are embedded and matched. , the first assembling part is flush with the outer surfaces of the connecting piece and the arc-curved piece, and the second assembling piece is flush with the outer surfaces of the connecting piece and the arc-curved piece. 5. The arc bending tooling according to claim 3, wherein the first assembly part includes a connecting bolt, and the second assembly part is a connecting nut that matches the first assembly part. 6. The arc bending tool according to claim 5, characterized in that both the first connecting part and the second connecting part have an opening structure, and the opening edge of the first connecting part is in contact with the connecting bolt. The edge shape is adapted, and the opening edge of the second connecting part is in the shape of a semi-circular arc. 7. The arc bending tooling according to any one of claims 2 to 6, further comprising a support assembly connected to the first assembly or the second assembly, The support assembly is disposed at the middle position of the end surface of the arc-shaped component. 8. The arc bending tooling according to any one of claims 1 to 6, characterized in that the arc bending chain is used to cooperate with a trough-shaped component, the trough-shaped component is provided with a slot-shaped opening, and the slot is The shaped opening is clamped on the curved arc chain, and the outer surface of the curved arc chain is used to support the inner wall surface of the groove-shaped opening. 9. The arc bending tooling according to claim 8, characterized in that the trough-shaped component is formed in close contact with the arc bending chain, and is bent on the arc bending chain through a fiery red process. 10. An arc bending equipment, characterized by including the arc bending tooling according to any one of claims 1-9.