Device and method for multi-angle metal plate forming

Abstract

The invention discloses a device and a method for multi-angle metal plate forming, and the device and the method for multi-angle metal plate forming comprise four parts, namely a module 1, a clamping plate 2, a fixing bolt 3 and a locking nut 4. The device aims at solving the problems of repeated correction and repeated clamping caused by springback and reverse concave due to elastic deformation of the part in the forming process of the angular sheet metal part and solving the problem of angle limitation caused by a conventional angle section forming device in the forming process of the part, the manufacturing process of the part is simplified, and the manufacturing period of the part is shortened. By means of the device, the problems of repeated correction and repeated clamping caused by springback and reverse concave of the parts are reduced, small-angle angle materials can be formed, one-time forming work of the parts with various angles on the same device can be achieved, the types of forming devices are reduced, operation is easy, use is convenient, the production efficiency of the parts is improved, and the production cost is reduced. And the forming angle range of the part is widened, and the use range of the device is widened.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet metal parts manufacturing, and relates to a device and method for multi-angle sheet metal forming. Background Art

[0002] There are many processing methods for sheet metal bending, among which manual bending is the most common manual forming processing method in sheet metal bending, which requires relatively high skills of the operator. In the sheet metal parts manufacturing process, the conventional operating steps for manual forming of angled parts are as follows:

[0003] 1. Calculate the unfolded size of the parts and cut the materials, and draw the bending center line;

[0004] 2. Prepare two modules or gauge irons whose length is greater than the length of the parts and whose R angle is consistent with the parts;

[0005] 3. Clamp the raw material between two modules or gauge irons, align the bending center line with the center R of the module or gauge iron, and beat the material with a rubber plate or wooden board to make it fit with the module or gauge iron;

[0006] 4. Use a wooden hammer and a wooden tip to evenly strike the R from beginning to end to make the material fit the module or gauge iron fully;

[0007] 5. To eliminate springback, take the part out of the module or gauge iron, then use a wooden tip to align the R angle of the part at 45° and gently tap the wooden tip with a wooden hammer to make the R angle fit the module or gauge iron fully;

[0008] 6. To eliminate the concave part, place the angled part on the platform and use a rubber beating plate to flatten the inner surface of the curved edge;

[0009] 7. Then clamp the parts in the module or gauge iron, and beat the parts with a rubber hitting plate to make the parts fit the module or gauge iron fully;

[0010] During the forming process of angular parts, the parts will rebound, and the parts are prone to deformation when the R angle is hit with a wooden tip on the platform. The parts need to be leveled for the second time. After leveling, they still need to be corrected again using modules or gauges, and the forming process is cumbersome.

[0011] During the manual forming process of angular sheet metal parts, two right-angle modules or gauge irons are used as forming fixtures for forming. The forming angle of the parts is limited, and only angular parts with angles between 90° and 180° can be manufactured. After the parts are initially formed, secondary shaping is required, and the angle and height of the parts cannot be guaranteed during the shaping process. Summary of the invention

[0012] Technical problem solved by the present invention: The present invention provides a device and method for multi-angle sheet metal forming, which aims to solve the problem of multiple corrections and multiple clamping caused by the rebound and concave caused by the elastic deformation of the parts during the forming process of the angular sheet metal parts, solve the angle limitation caused by the universal angle material forming device during the part forming process (one forming device can only correspond to one angle material forming), streamline the manufacturing process of the parts, shorten the manufacturing time of the parts, reduce the number of part forming devices and reduce costs. It can ensure that the clamping parts of the parts are highly consistent during the wooden tip knocking process, improve the production efficiency of the parts, increase the applicability of the module, and provide a forming device and processing method for angular sheet metal parts.

[0013] The technical solution of the present invention:

[0014] On the one hand, the present invention provides a device for multi-angle sheet metal forming, the device comprising: a template 1, a clamping plate 2, a fixing bolt 3, and a locking nut 4;

[0015] The template 1 and the clamping plate 2 have the same length, the template 1 has first holes at both ends, and the clamping plate 2 has second holes at positions corresponding to the holes on the template 1;

[0016] The fixing bolt 3 is passed through the first hole and the second hole, and the fixing bolt 3 is locked using the locking nut 4, so that the template 1 and the clamping plate 2 are bolted together.

[0017] Furthermore, module 1 adopts an L-shaped structure, the non-working edge R1 is rounded, the verticality of the two working surfaces is ≯0.01mm, the smoothness of the working surface is ≯Ra0.8, and the R angle 6 is set according to the R angle of the part and is used for forming the R angle of the part. The angle material formed at the R angle 6 can achieve one-time forming of angle materials greater than 90°.

[0018] Furthermore, the clamping plate 2 adopts a flat plate structure, and the upper end is in the form of a rounded step. The R angle 8 of the rounded step is set according to the R angle of the part and is used for forming the R angle of the part.

[0019] Furthermore, the lengths of the template 1 and the clamping plate 2 are designed according to the length of the part, and both ends of the template 1 and the clamping plate 2 are 30 mm longer than both ends of the part.

[0020] Furthermore, the first hole and the second hole are respectively opened at the ends of the template 1 and the clamping plate 2 which are longer than the ends of the part.

[0021] Furthermore, the upper end surface of the R angle 6 of the module 1 is flush with the high point of the R angle 8 of the clamping plate 2 .

[0022] Furthermore, the rounded step form at the upper end of the clamping plate 2 can be used to form parts with any bending angle.

[0023] On the other hand, the present invention also provides a method for multi-angle sheet metal forming, the method is implemented by the device, the part is an angular sheet metal part, and the method comprises:

[0024] During the forming process of the angle sheet metal parts, draw the bending center line on the angle sheet metal part material, and then clamp the angle sheet metal part material between the module 1 and the plywood 2, so that the bending center line is aligned with the center of the R angle 8 of the plywood 2, use a bakelite plate to support the back of the bending part of the angle sheet metal part material and use a rubber hitting plate to beat the part of the angle sheet metal part material that needs to be bent, and then use a wooden hammer and a wooden tip to evenly knock the R of the angle sheet metal part material from beginning to end, so that the R angle of the angle sheet metal part material is fully fitted with the R angle 8 of the plywood 2, use an angle ruler to check the forming angle of the angle sheet metal part material, and finally remove the connecting bolts 3 and take out the angle sheet metal part.

[0025] The present invention provides a device and method for multi-angle sheet metal forming, which comprises four parts: a module 1, a clamping plate 2, a fixing bolt 3, and a locking nut 4. The device of the present invention can complete the work of clamping and hammering the angle material once, is suitable for hammering and hammering at various angles, reduces the problems of multiple corrections and multiple clamping caused by the springback and concave of the parts, is simple to operate and convenient to use, simplifies the manufacturing process of the parts, shortens the manufacturing cycle of the parts, improves the production efficiency of the parts, ensures the high consistency of the clamping parts of the parts, increases the forming angle range of the parts, and increases the applicability of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a device for multi-angle sheet metal forming;

[0027] Figure 2 It is a schematic diagram of a device module 1 for multi-angle sheet metal forming;

[0028] Figure 3 It is a schematic diagram of a device clamping plate 2 for multi-angle sheet metal forming;

[0029] Figure 4 It is a working schematic diagram of a device for multi-angle sheet metal forming;

[0030] Figure 5 It is a schematic diagram of the forming operation of a device for forming sheet metal at multiple angles;

[0031] Among them: 1-module, 2-clamp, 3-fixing bolt, 4-locking nut, 5-angle material. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.

[0033] The present invention provides a device and method for forming sheet metal at various angles, such as Figure 1 As shown, it includes four parts: module 1, clamping plate 2, fixing bolt 3, locking nut 4.

[0034] When using the device of the present invention, after the plate is clamped and fitted with the forming device, align it with its bending line, hit the back of the plate with a rubber hammer, and the protruding part of the plate is bent along the bending line. Use a universal angle ruler to measure the angle of the formed angle material. When the angle is close to the required angle, use a bakelite board to knock and repair it against the bending line until the angle reaches the required angle, thereby completing the forming of the angle sheet metal.

[0035] like Figure 2 and 3 As shown, module 1 adopts an L-shaped structure, and the material is 316 stainless steel. The non-working edge R1 is rounded, and the verticality of the two working surfaces is ≯0.01mm, which can ensure the accuracy of angle material forming measurement. The smoothness of the working surface is ≯Ra0.8, which ensures the reliability of part clamping and measurement. The R angle 6 of the clamping plate 2 is set according to the R angle of the part and is used for the forming of the R angle of the part. The angle material formed at the R angle 6 can achieve one-time forming of angle materials greater than 90°. The module 1 is provided with connecting holes 5 at both ends, with a diameter of φ5H7, and a chamfer of 1x45° at the inlet end, which is convenient for passing the positioning bolts. The clamping plate 2 adopts a flat structure, and the material is 316 stainless steel. The finish of the working surface is ≯Ra0.8 to ensure the reliability of part clamping and measurement. The module 1 is provided with connecting holes 7 at both ends, with a diameter of φ5H7, and a chamfer of 1x45° at the inlet end, which is convenient for passing the positioning bolts. When the connecting holes 7 are made, they are matched with the connecting holes 5 on the module 1 to ensure that the module 1 is flush with the end surface of the clamping plate 2. The R angle 8 is set according to the R angle of the part and is used for the forming of the R angle of the part. The angle material formed at the R angle 8 can realize the one-time forming of the angle material less than 90°, eliminating the step of secondary correction and saving the production cycle. The diameter of the fixing bolt 3 is φ5, and its length is selected according to the thickness of the module 1 and the clamping plate 2. The matching of the bolt with the connecting holes 5 and 7 belongs to the small clearance matching, which avoids the misalignment of the bending line of the angular part caused by the shaking of the fixing bolt and reduces the error caused by the secondary knocking repair. The locking nut 4 is a process nut of M5 and is welded to the outlet of the connection hole of the module 1 by welding, and the coaxiality of the two axes is ensured to be ≯0.01mm, so that the fixing bolt can be easily screwed in or out.

[0036] The clamping plate 2 in the device of the present invention avoids the limitation of the surface of the angle material during the forming process, and can knock the angle part to a specified angle during one clamping process, avoiding deformation and bending line misalignment caused by secondary knocking.

[0037] Combined with Figure 4-5, provide an angle sheet metal part forming device and method, the length of the device is designed according to the length of the part, and two φ5H7 connecting holes 5 and connecting holes 7 are set at both ends according to the length of the part, and the connection between the module 1 and the clamping plate 2 is completed by fixing bolts 3 and locking nuts 4.

[0038] During the forming process of angled sheet metal parts, draw the bending center line on the material and clamp the material between module 1 and plywood 2, align the bending center line with the R center of plywood 2, use a bakelite plate to support the back of the bending part of the material and use a rubber hitting plate to beat the part to be bent, then use a wooden hammer and a wooden tip to evenly knock the R from beginning to end, so that the R angle of the part is fully fitted with the R angle of plywood 2, use an angle ruler to check the forming angle of the part, and finally remove the connecting bolt 3 and take out the part.

[0039] The specific steps are as follows:

[0040] 1. Manufacturing parts of the invention device

[0041] Manufacture the module 1 and the splint 2 in the device of the invention according to the technical conditions and design drawings;

[0042] 2. Assembling the device of the present invention

[0043] Align the plate clamping surfaces of module 1 and clamp plate 2 to ensure that the high point of R-8 is flush with the upper end surface of R-6, clamp them with a bow clamp, configure the connecting hole φ5H7 according to the assembly drawing and technical requirements, and then connect module 1 to clamp plate 2 with fixing bolts 3 and locking nuts 4. Module 1 and locking nuts 4 can be connected into a whole by welding at the fitting surface of module 1 and locking nuts 4, so as to reduce the workload during clamping and loosening and improve work efficiency.

[0044] 3. Cutting

[0045] According to the parameters in the design drawings, there is an arbitrary angle calculation formula to calculate the unfolded length of the sheet metal, cut the material according to the size of the unfolded material, and remove the burrs to avoid cracks caused by edge burrs.

[0046] 4. Calculate the bending line size of the part and draw the bending center line.

[0047] 5. Clamp the raw material between module 1 and plywood 2, align the bending center line with the R center of plywood 2, use a bakelite plate to support the back of the bending part of the material and hit the material with a rubber hitting board or a wooden board.

[0048] 6. Use a wooden hammer and a wooden tip to evenly tap the R from beginning to end to make the R angle of the part fit fully with the R angle of plywood 2.

[0049] 7. Use an angle ruler to check the forming angle of the parts. After the angle is qualified, remove the connecting bolt 3, take out the formed parts, and complete the forming work of the sheet metal angle material.

Claims

1. A device for multi-angle sheet metal forming, characterized in that: The device comprises: a template (1), a clamping plate (2), a fixing bolt (3), and a locking nut (4); The template (1) and the clamping plate (2) have the same length, a first hole is opened at both ends of the template (1), and a second hole is opened at a position corresponding to the opening position on the clamping plate (2) and the template (1); A fixing bolt (3) is passed through the first hole and the second hole, and a locking nut (4) is used to lock the fixing bolt (3), thereby bolting the template (1) and the clamping plate (2).

2. The device for multi-angle sheet metal forming according to claim 1, characterized in that: The module (1) adopts an L-shaped structure, the non-working edge R1 is rounded, the verticality of the two working surfaces is ≯0.01mm, the smoothness of the working surface is ≯Ra0.8, the R angle (6) is set according to the R angle of the part, and is used for forming the R angle of the part. The angle material formed at the R angle (6) can achieve one-time forming of angle materials greater than 90°.

3. The device for multi-angle sheet metal forming according to claim 2, characterized in that: The clamping plate (2) adopts a flat plate structure, and the upper end is in the form of a rounded step. The R angle (8) of the rounded step is set according to the R angle of the part and is used for forming the R angle of the part.

4. The device for multi-angle sheet metal forming according to claim 1, characterized in that: The lengths of the template (1) and the clamping plate (2) are designed according to the length of the part, and both ends of the template (1) and the clamping plate (2) are 30 mm longer than both ends of the part.

5. The device for multi-angle sheet metal forming according to claim 4, characterized in that: The first hole and the second hole are respectively opened at the ends of the template (1) and the clamping plate (2) at portions that are longer than the ends of the parts.

6. The device for multi-angle sheet metal forming according to claim 3, characterized in that: The upper end surface of the R angle (6) of the module (1) is flush with the high point of the R angle (8) of the clamping plate (2).

7. The device for multi-angle sheet metal forming according to claim 6, characterized in that: The rounded step form at the upper end of the clamping plate (2) can form parts with any bending angle.

8. A method for multi-angle sheet metal forming, characterized in that: The method is implemented by using the device according to any one of claims 1 to 7, the part is an angular sheet metal part, and the method comprises: During the forming process of the angle sheet metal part, a bending center line is drawn on the angle sheet metal part material, and then the angle sheet metal part material is clamped between the module (1) and the clamp (2) so that the bending center line is aligned with the center of the R angle (8) of the clamp (2). A bakelite plate is used to support the back of the bending part of the angle sheet metal part material and a rubber beating plate is used to beat the part of the angle sheet metal part material to be bent. Then, a wooden hammer and a wooden tip are used to evenly knock the R part of the angle sheet metal part material from beginning to end so that the R angle of the angle sheet metal part material is fully fitted with the R angle (8) of the clamp (2). An angle ruler is used to check the forming angle of the angle sheet metal part material. Finally, the connecting bolt 3 is removed and the angle sheet metal part is taken out.

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