Semi-cylindrical sheet metal part forming device

Abstract

The utility model discloses a semi-cylindrical sheet metal part forming device, relates to the technical field of sheet metal part forming equipment, and is mainly used for solving the problem that a proper forming device for producing a semi-cylindrical sheet metal part with a large arc structure and a concave middle part is lacked at present. According to the main structure, a base plate is included, a semi-cylindrical forming male die capable of ascending and descending is arranged on the upper plate face of the base plate, arc faces on the two sides of the forming male die are inwards-concave arc faces, and pressing strips capable of getting close to the inwards-concave arc faces are horizontally arranged on the portions, on the back sides of the two inwards-concave arc faces, of the base plate. The side, close to the forming male die, of the pressing strip is provided with an arc-shaped top face matched with the inwards-concave arc face in shape. The utility model provides a semi-cylindrical sheet metal part forming device, which can be used for manufacturing a semi-cylindrical sheet metal part with a large arc and a concave middle part, and meets the requirements of short period and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal forming equipment, in particular to a forming device for semi-cylindrical sheet metal parts. Background Art

[0002] Sheet metal parts are an important part of the aircraft body. Therefore, during the trial production process of a new aircraft, it is necessary to quickly manufacture sheet metal parts by means of low cost and short cycle, so as to carry out installation experiments. At present, the common forming methods for sheet metal parts include hand-beating die, skin stretching, stretching die and other methods.

[0003] However, for the installation experiment requirements of a semi-cylindrical sheet metal part with a large arc and an inner concave in the middle. Due to its special shape - a semi-cylindrical shape with a large arc and an inner concave in the middle, it is impossible to use a hand-beating die for forming; at the same time, due to the inner concave in the middle, it is also difficult to perform skin stretching and forming; in addition, due to the complex structure of the traditional stretching die, its manufacturing cycle and manufacturing cost do not meet the requirements of short cycle and low cost for trial production.

[0004] Therefore, at present, a forming device for semi-cylindrical sheet metal parts that can solve the above problems is needed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a forming device for semi-cylindrical sheet metal parts, which can complete the production of semi-cylindrical sheet metal parts with a large arc and an inner concave in the middle, and the device meets the requirements of short cycle and low cost.

[0006] The technical solution of the utility model to solve the above technical problems is: a forming device for semi-cylindrical sheet metal parts, including a horizontally arranged base plate, on the upper surface of the base plate, there is a forming punch that can be vertically lifted and is semi-cylindrical. The forming punch is horizontally arranged on the base plate along its axial direction, and the arc surfaces on both sides of the forming punch are inner concave arc surfaces. On the base plate on the opposite sides of the two inner concave arc surfaces, there are horizontal pressure strips that can approach the inner concave arc surface side. On the side of the pressure strip close to the forming punch, there is an arc-shaped top surface adapted to the shape of the inner concave arc surface.

[0007] As a further improvement of the utility model, on the base plate below the pressure strip, there are first mounting holes that can fix the pressure strip in the first mounting position, and on the base plate on the side of the first mounting hole close to the forming punch, there are second mounting holes that can fix the pressure strip in the second mounting position.

[0008] As a further improvement of the utility model, on the pressure strip, there are fixing screws that vertically penetrate the pressure strip and are in threaded cooperation with the first mounting holes and the second mounting holes.

[0009] As a further improvement of the utility model, a locking pressure block extending in the same direction as the pressure strip is detachably installed on the upper surface of the pressure strip.

[0010] As a further improvement of the present utility model, a pressing screw vertically penetrating the locking pressing block and threadedly engaged with the pressing strip is provided on the locking pressing block.

[0011] As a further improvement of the present utility model, a pressing plate capable of vertically lifting and lowering is horizontally provided above the base plate, and process columns whose lower ends can be in tight contact with the locking pressing block are vertically provided on both sides of the lower surface of the pressing plate.

[0012] As a further improvement of the present utility model, guide grooves extending along the lifting direction thereof are provided on the end faces at both ends of the forming punch, and guide plates that are movably inserted and engaged with the guide grooves are provided on the base plate.

[0013] As a further improvement of the present utility model, a plurality of guide columns extending along the lifting direction of the forming punch are provided on the upper plate surface of the base plate, and the guide columns are movably inserted and engaged with the bottom surface of the forming punch.

[0014] As a further improvement of the present utility model, a platform plate for horizontally mounting the base plate is horizontally provided below the base plate.

[0015] As a further improvement of the present utility model, a plurality of ejector rods capable of vertically lifting and lowering are provided on the platform plate, and the upper ends of the ejector rods penetrate the base plate and are connected to the forming punch.

[0016] Beneficial effects

[0017] Compared with the prior art, the advantages of a semi-cylindrical sheet metal part forming device of the present utility model are as follows:

[0018] This device can fix both ends of the sheet material by using the pressing strip, and cooperate with the lifting and lowering forming punch with an inner concave arc surface and the arc-shaped top surface of the pressing strip. Through the way of secondary jacking, it can quickly and conveniently complete the production of a semi-cylindrical sheet metal part with a large arc and an inner concave in the middle. Moreover, compared with the traditional stretching die, the structure of this device is ingenious, avoiding the defect of the complex structure of the traditional stretching die. Therefore, this device can also meet the trial production requirements of short cycle and low cost.

[0019] Through the following description and in combination with the drawings, the present utility model will become clearer. These drawings are used to explain the embodiments of the present utility model. Description of the drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is the perspective view of the present utility model;

[0022] Figure 2 is the perspective view of the installation structure of the forming punch in the present utility model;

[0023] Figure 3 is the perspective view of the cooperation between the base plate and the ejector rod in the present utility model;

[0024] Figure 4 is the perspective view of the cooperation between the base plate and the platform plate in the present utility model;

[0025] Figure 5 is the perspective view of the state of the forming punch during the first forming of the present utility model;

[0026] Figure 6 is the perspective view of the state of the forming punch during the second forming of the present utility model.

[0027] Among them: 1 - base plate; 11 - guide plate; 12 - guide post; 13 - first mounting hole; 14 - second mounting hole; 2 - pressing strip; 21 - arc top surface; 22 - locking pressing block; 3 - forming punch; 31 - guide groove; 32 - arc concave surface; 4 - platform plate; 41 - ejector rod; 5 - pressing plate; 51 - process column. Detailed implementation manners

[0028] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be directly connected, or indirectly connected through an intermediate medium, or the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Now describe the embodiments of the present utility model with reference to the accompanying drawings.

[0031] Embodiment

[0032] The detailed implementation manners of the present utility model are as Figure 1-6As shown in the figure, a semi-cylindrical sheet metal part forming device includes a horizontally arranged base plate 1, and a forming punch 3 that can be vertically lifted and is semi-cylindrical is provided on the upper surface of the base plate 1. The forming punch 3 is horizontally arranged on the upper surface of the base plate 1 along its axis, and the arc surfaces on both sides of the forming punch 3 are concave arc surfaces 32. At the same time, on the base plate 1 on the opposite sides of the two concave arc surfaces 32, there are horizontally arranged pressing strips 2 that can approach the concave arc surface 32 side. The two pressing strips are symmetrically arranged, and an arc-shaped top surface 21 that is adapted to the shape of the concave arc surface 32 is provided on the side of the pressing strip 2 close to the forming punch 3.

[0033] Before manufacturing a semi-cylindrical sheet metal part with a large arc and a concave middle, first cut the sheet material according to the dimensional requirements, and punch holes on both side edges of the sheet material to make screw avoidance holes; then, use a rolling bender to roll the sheet material into the approximate shape of the semi-cylindrical sheet metal part, and bend both side edges to form a bending area for the pressing strip 2 to press tightly, thereby completing the preprocessing process before sheet material processing.

[0034] After completing the preprocessing of the sheet material, the semi-cylindrical sheet metal part with a large arc and a concave middle can be manufactured through the following steps:

[0035] Step 1, cover the preprocessed sheet material on the upper surface of the forming punch 3, and press both side edges of the sheet material with the pressing strip 2. At this time, the pressing strip 2 is in the first installation position - there is a certain distance between the vertex of the arc-shaped top surface 21 and the concave arc surface 32 at this time;

[0036] Step 2, the forming punch 3 slowly rises to stretch the sheet material to complete the forming of the semi-cylindrical sheet metal part;

[0037] Step 3, the forming punch 3 descends to make the sheet material separate from the forming punch 3;

[0038] Step 4, loosen the pressing strip 2, move the two pressing strips 2 a certain distance towards the forming punch 3, and press both side edges of the sheet material again with the pressing strip 2. At this time, the pressing strip 2 is in the second installation position - the vertex of the arc-shaped top surface 21 and the lowest point of the concave arc surface 32 are staggered at this time;

[0039] Step 5, repeat Step 2 and Step 3 to complete the final forming of the semi-cylindrical sheet metal part with a large arc and a concave middle, and then take off the part.

[0040] Thus, this device can quickly and conveniently complete the manufacturing of a semi-cylindrical sheet metal part with a large arc and a concave middle through the method of secondary lifting. Moreover, compared with the traditional stretching die, the structure of this device is ingenious, avoiding the defect of the complex structure of the traditional stretching die. Therefore, this device can also meet the trial production requirements of short cycle and low cost.

[0041] In this device, in order to replace and install the pressing strip 2, the base plate 1 below the pressing strip 2 is provided with a first mounting hole 13 capable of fixing the pressing strip 2 in the first mounting position, and the base plate 1 on the side of the first mounting hole 13 close to the forming punch 3 is provided with a second mounting hole 14 capable of fixing the pressing strip 2 in the second mounting position. Among them, both the first mounting hole 13 and the second mounting hole 14 are provided with a plurality of them and are arranged in sequence along the axial direction of the forming punch 3.

[0042] In this embodiment, at the same time, the pressing strip 2 is provided with screw avoidance holes vertically penetrating through the pressing strip 2 and the sheet material in sequence, and fixing screws that are in threaded fit with the first mounting hole 13 and the second mounting hole 14. Through the fixing screws, the pressing strip 2 can firmly press and fix the sheet material on the base plate 1. At the same time, in order to ensure the stability of the sheet material pressing, a locking pressing block 22 extending in the same direction as it is detachably installed on the upper surface of the pressing strip 2. The locking pressing block 22 is provided with a pressing screw vertically penetrating through the locking pressing block 22 and in threaded fit with the pressing strip 2. During use, the edge of the bending area of the sheet material is clamped between the locking pressing block 22 and the pressing strip 2, and the pressing screw passing through the locking pressing block 22 and the sheet material in sequence can further increase the firmness of the sheet material pressing.

[0043] Moreover, in order to prevent the pressing strip 2 and the locking pressing block 22 from falling off, a pressing plate 5 capable of vertically lifting is horizontally provided above the base plate 1, and process columns 51 whose lower ends can be in tight contact with the locking pressing block 22 are vertically provided on both sides of the lower surface of the pressing plate 5. By squeezing the locking pressing block 22 through the process columns 51, it can further prevent the pressing strip 2 from coming off the base plate 1.

[0044] Regarding the lifting guidance of the forming punch 3, guide grooves 31 extending along its lifting direction are provided on the end faces at both ends of the forming punch 3, and a guide plate 11 that is movably inserted and matched with the guide grooves 31 is provided on the base plate 1. At the same time, in order to further ensure the stability of the movement of the forming punch 3, a plurality of guide columns 12 extending along the lifting direction of the forming punch 3 are also provided on the upper surface of the base plate 1, and the guide columns 12 are movably inserted and matched with the bottom surface of the forming punch 3.

[0045] In addition, in order to install the base plate 1, a platform plate 4 for horizontally installing the base plate 1 is horizontally provided below the base plate 1. In this embodiment, in order to realize the lifting drive of the forming punch 3, a plurality of ejector rods 41 capable of vertically lifting are provided on the platform plate 4, and the upper ends of the ejector rods 41 penetrate through the base plate 1 and are connected to the forming punch 3.

[0046] The above describes the present utility model in combination with the best embodiment, but the present utility model is not limited to the disclosed embodiment above, and should cover various modifications and equivalent combinations made according to the essence of the present utility model.

Claims

1. A semi-cylindrical sheet metal forming device, characterized in that: The invention comprises a horizontally arranged base plate (1), wherein the upper plate surface of the base plate (1) is provided with a semi-cylindrical forming convex mold (3) capable of vertical lifting and lowering, the forming convex mold (3) is horizontally arranged on the base plate (1) along its axial direction, and the arc surfaces on both sides of the forming convex mold (3) are both concave arc surfaces (32), and the base plates (1) on the opposite sides of the two concave arc surfaces (32) are both horizontally provided with pressure strips (2) capable of approaching the concave arc surfaces (32), and the pressure strips (2) close to the forming convex mold (3) are provided with an arc-shaped top surface (21) adapted to the shape of the concave arc surface (32).

2. The semi-cylindrical sheet metal forming device according to claim 1, characterized in that: A first mounting hole (13) capable of fixing the pressure strip (2) at a first mounting position is provided on the base plate (1) below the pressure strip (2), and a second mounting hole (14) capable of fixing the pressure strip (2) at a second mounting position is provided on the base plate (1) on the side of the first mounting hole (13) close to the forming punch (3).

3. The semi-cylindrical sheet metal forming device according to claim 2, characterized in that: The pressure strip (2) is provided with a fixing screw which vertically penetrates the pressure strip (2) and is threadably matched with the first mounting hole (13) and the second mounting hole (14).

4. The semi-cylindrical sheet metal forming device according to any one of claims 1 to 3, characterized in that: A locking pressure block (22) extending in the same direction as the pressure strip (2) is detachably mounted on the upper surface of the pressure strip (2).

5. The semi-cylindrical sheet metal forming device according to claim 4, characterized in that: The locking pressure block (22) is provided with a clamping screw which vertically penetrates the locking pressure block (22) and is threadably matched with the pressure strip (2).

6. The semi-cylindrical sheet metal forming device according to claim 4, characterized in that: A pressing plate (5) capable of vertically ascending and descending is horizontally disposed above the base plate (1), and process columns (51) whose lower ends can be in tight contact with the locking pressing block (22) are vertically disposed on both sides of the lower surface of the pressing plate (5).

7. The semi-cylindrical sheet metal forming device according to claim 1, characterized in that: The end surfaces at both ends of the forming punch (3) are provided with guide grooves (31) extending along the lifting direction thereof, and the base plate (1) is provided with guide plates (11) movably plugged into the guide grooves (31).

8. The semi-cylindrical sheet metal forming device according to claim 1 or 7, characterized in that: A plurality of guide columns (12) extending along the lifting direction of the forming punch (3) are provided on the upper plate surface of the base plate (1), and the guide columns (12) are movably plugged into and matched with the bottom surface of the forming punch (3).

9. The semi-cylindrical sheet metal forming device according to claim 1, characterized in that: A platform plate (4) for horizontally mounting the base plate (1) is provided horizontally below the base plate (1).

10. The semi-cylindrical sheet metal forming device according to claim 9, characterized in that: The platform plate (4) is provided with a plurality of vertically movable push rods (41), and the upper ends of the push rods (41) penetrate the base plate (1) and are connected to the forming convex mold (3).

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