Correcting device for right-angle bent beam

Abstract

The utility model discloses a correcting device for a right-angle bent beam, and relates to the technical field of workpiece bending machining. The device comprises a positioning mechanism, a pressing mechanism and a correcting mechanism, the positioning mechanism is used for accurately positioning the bent beam to be corrected, the pressing mechanism is used for firmly fixing the bent beam to be corrected on the positioning mechanism, and the correcting mechanism is used for accurately correcting the bent beam to be corrected. The pressing mechanism comprises a plurality of pressing plates, supporting studs and hexagon nuts, the correcting mechanism comprises three correcting bolts, an overturning pressing block and an adjusting supporting piece, two correcting bolts are installed on the two faces, in the vertical direction, of the fixing support respectively, the third correcting bolt is installed at one end of the overturning pressing block, and the other end of the overturning pressing block is rotationally connected with the fixing support. The utility model provides a correcting device for right-angle bending of a plate, which is used for solving the problems that a bent workpiece needs to be bent back and corrected for multiple times and the operation is complicated, simplifying the working process and improving the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of workpiece bending processing, and in particular relates to a correction device for a right-angle bending beam. Background Art

[0002] Currently, sheet metal forming and bending processes often require a large number of right-angle bends. For products with high precision requirements, the form and position tolerances of the sheet metal after bending are also very strict. Although CNC bending technology is quite mature, in actual production, the quality of the bent product is still unstable due to factors such as mold wear, machine tool errors, operating errors, and the elastic recovery of the metal sheet after bending.

[0003] The quality of bent products is unstable, making it difficult to fully meet the designed geometric tolerances. Therefore, additional processes are required to bend the bent parts back to achieve the required angular accuracy. This back-bending process places high demands on the bending points and force on the sheet metal parts, increasing the complexity and difficulty of the operation and resulting in a very high rework rate. Furthermore, parts often require multiple back-bending and calibration procedures to meet design requirements. For longer parts or those with large bent panels, the back-bending and calibration processes are even more complex and time-consuming, reducing production efficiency and increasing processing costs.

[0004] Therefore, it is necessary to design a correction device for right-angle bending of plates to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a correction device for right-angle bending of plates, which is used to solve the problem that bent workpieces need to be bent back and corrected multiple times and the operation is complicated, thereby simplifying the work process and improving work efficiency.

[0006] The technical solutions used in this utility model are as follows:

[0007] A device for correcting a right-angle bent beam includes a positioning mechanism, the positioning mechanism including a base, a plurality of fixing brackets and a positioning block, the fixing brackets being fixedly connected to one side of an upper surface of the base, the positioning block being fixedly connected to one side of the fixing brackets, and further comprising:

[0008] A clamping mechanism, comprising a plurality of clamping plates, support studs, and hexagonal nuts. The clamping plate is located on the other side of the upper surface of the base. One end of the support stud is fixedly mounted on the base, and the other end passes through the clamping plate and is engaged with the hexagonal nut.

[0009] The correction mechanism includes a correction bolt assembly and a flip pressure block, the correction bolt assembly includes a first correction bolt, a second correction bolt and a third correction bolt, wherein the first correction bolt and the second correction bolt are respectively installed on the two vertical sides of the fixed bracket, the third correction bolt is installed at one end of the flip pressure block, and the other end of the flip pressure block is rotatably connected to the fixed bracket.

[0010] Furthermore, the fixing bracket is an L-shaped structure, and a reinforcing rib plate is fixed at the back thereof.

[0011] Furthermore, a sink is provided on the surface of the base, and the sink is 3 mm.

[0012] Furthermore, the positioning block has a precision-machined surface for ensuring the formation of a 90° reference support surface.

[0013] Furthermore, the clamping mechanism also includes a pressure plate contour block and a locking bolt, the pressure plate contour block is placed below one end of the pressure plate, and the locking bolt is installed on the other end of the pressure plate.

[0014] Furthermore, a circular step is provided in the middle of the support stud.

[0015] Furthermore, the flip pressing block has a U-shaped structure, and a reinforcing plate is provided at one end away from the rotating side, and the reinforcing plate is cooperatively connected with the third correction bolt.

[0016] Furthermore, the correction mechanism further includes a limit block, which is rotatably connected to the fixed bracket and is used to limit the flipping pressing block.

[0017] Furthermore, the correction mechanism also includes an adjustment support member, which includes a nut seat, a locking nut and a threaded rod. The nut seat is placed on the inner cavity surface of the bent beam to be corrected, the locking nut is sleeved on the threaded rod, and the threaded rod is threadedly connected to the nut seat.

[0018] The beneficial effects of the present invention are as follows: the correction device of the present invention can correct the angular tolerances of the three associated surfaces of a right-angle bending part by cooperating with the correction bolt assembly, the flipping pressure block, and the adjustment support member. Furthermore, the device combines the bending of the workpiece and the rebending of the bent workpiece into one device, eliminating the need for mid-process workbench replacement, thus facilitating processing. This simplifies the workers' work of measuring and repeatedly calibrating the bent beam, significantly improving production efficiency and saving manufacturing and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a correction device for a right-angle bent beam provided by the present invention;

[0020] Figure 2 It is a structural diagram of the bent beam to be corrected;

[0021] Figure 3 It is a structural diagram of the support stud;

[0022] Figure 4 Schematic diagram of bending the first bending surface back in Example 3;

[0023] Figure 5 Schematic diagram of bending the second bending surface back in Example 5;

[0024] Figure 6 Schematic diagram of the structure of the adjustment support.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] In the figure, 100 is the positioning mechanism; 200 is the clamping mechanism; 300 is the correction mechanism; 400 is the bent beam to be corrected; 110 is the base; 120 is the fixing bracket; 130 is the positioning block; 210 is the pressure plate; 220 is the pressure plate height block; 230 is the support stud; 240 is the hexagonal nut; 250 is the locking bolt; 310 is the correction bolt assembly; 320 is the flip pressure block; 330 is the limit block; 340 is the adjustment support; 410 is the reference plane; 420 is the first bending surface; 430 is the second bending surface; 311 is the first correction bolt; 312 is the second correction bolt; 313 is the third correction bolt; 341 is the nut seat; 342 is the locking nut; 343 is the threaded rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figures 1-6As shown, this embodiment provides a device for correcting a right-angle bent beam, comprising a positioning mechanism 100, a clamping mechanism 200, and a correction mechanism 300. The clamping mechanism 200 is located on one side of the upper surface of the positioning mechanism 100, and the correction mechanism 300 is disposed on the positioning mechanism 100. The positioning mechanism 100 is used to precisely position the bent beam 400 to be corrected, ensuring stability and accuracy during the correction process; the clamping mechanism 200 contacts the upper surface of the bent beam 400 to securely fix the bent beam 400 to the positioning mechanism 100, preventing movement or deformation during the correction process; and the correction mechanism 300 is used to precisely correct the bent beam 400 to restore its right-angle shape.

[0031] Specifically, if Figure 1 As shown, the positioning mechanism 100 includes a base 110, a fixed bracket 120, and a positioning block 130, wherein the base 110 serves as a support platform for the entire device and is in the shape of a rectangular parallelepiped. A 3mm sinking process is performed on its upper surface to serve as a reference surface for the correction device. A plurality of fixed brackets 120 are linearly and equidistantly distributed on one side of the surface of the base 110. The fixed bracket 120 is an L-shaped structure, and a reinforcing rib plate is fixed on its back. A rectangular positioning block 130 is fixed in front of each fixed bracket 120. The side of each positioning block 130 facing the bent beam 400 to be corrected is finely processed to ensure that an accurate 90° reference surface is formed for positioning the right-angled portion of the bent beam 400 to be corrected. The base 110, the fixed bracket 120, and the positioning block 130 in the entire positioning mechanism 100 are welded to form an integral structure.

[0032] Specifically, if Figure 1 As shown, in this embodiment, a plurality of clamping mechanisms 200 are provided, each of which includes a clamping plate 210, a clamping plate equal height block 220, a support stud 230, a hexagonal nut 240 and a locking bolt 250, wherein the clamping plate 210 is mounted on the other side of the base 110 through the support stud 230, the hexagonal nut 240 and the locking bolt 250. Specifically, a locking bolt 250 is installed on the end of the clamping plate 210 away from the bent beam 400 to be corrected. , used to fix the pressing plate 210, a hollow notch is opened on the pressing plate 210, and support studs 230 and hexagonal nuts 240 are provided on both sides of the hollow notch, wherein one end of the support stud 230 is fixedly mounted on the base 110, and the other end passes through the hollow notch of the pressing plate 210 and is engaged with the hexagonal nut 240. The pressing plate 210 is tightened or loosened by rotating the hexagonal nut 240. In this embodiment, the hollow notch is U-shaped to achieve flexible adjustment of the pressing position of the pressing plate 210;

[0033] In addition, if Figure 3As shown, in order to limit the height position of the pressure plate 210 and prevent the pressure plate 210 from slightly displacing or tilting when under pressure, a circular step is provided in the middle of the support stud 230;

[0034] A rectangular parallelepiped pressing plate height block 220 is placed below the other end of each pressing plate 210 to adjust the height of the pressing plate 210 to ensure that the pressing plate 210 can evenly and stably press the bent beam 400 to be corrected;

[0035] Specifically, if Figure 1 、 Figure 4 and Figure 5 As shown, the correction mechanism 300 includes a correction bolt assembly 310, a flip pressing block 320, a limit block 330 and an adjustment support member 340. Figure 4 As shown, the correction bolt assembly 310 includes a first correction bolt 311, a second correction bolt 312 and a third correction bolt 313. Two threaded through holes are opened on both sides of the fixed bracket 120 in the vertical direction. The first correction bolt 311 and the second correction bolt 312 are respectively installed in the above two threaded through holes. The flip pressing block 320 has a U-shaped structure, one end of which is connected to the upper end of the fixed bracket 120 through a stepped pin hole. The other end of the flip pressing block 320 has a rectangular reinforcement plate and a threaded through hole opened, which is threadedly engaged with the third correction bolt 313.

[0036] like Figure 4 As shown, a limit block 330 is installed on the upper surface of each fixed bracket 120. When the flip pressing block 320 is activated to correct the workpiece, the limit block 330 rotates to a corresponding angle to limit the reaction force of the flip pressing block 320.

[0037] The adjustment support 340 can be used selectively to meet multi-faceted correction;

[0038] like Figure 5 As shown, when the adjustment support 340 is used for correction, the adjustment support 340 is placed vertically on the reference surface 410 of the bending beam 400 to be corrected, as shown in FIG. Figure 6 As shown, the adjustment support member 340 includes a nut seat 341, a locking nut 342 and a threaded rod 343. The threaded rod 343 is covered with a locking nut 342, and the threaded rod 343 is threadedly connected to the nut seat 341. By adjusting the telescopic distance between the threaded rod 343 and the nut seat 341, the purpose of correcting the bent beam 400 to be corrected is achieved.

[0039] The above is a correction device for a right-angle bending beam provided in this embodiment. For ease of understanding its working principle, Figure 2 As shown, the bent beam 400 to be corrected in this embodiment includes a reference surface 410 , a first bending surface 420 , and a second bending surface 430 .

[0040] The specific correction method includes the following embodiments:

[0041] Example 2:

[0042] When the first bending surface 420 of the bending beam 400 to be corrected is greater than 90 degrees from the reference surface 410, as shown in FIG. Figure 1 As shown,

[0043] Place the reference surface 410 of the bent beam 400 to be corrected on the upper surface of the base 110. The first bent surface 420 of the bent beam 400 to be corrected is firmly against the positioning block 130. Based on the length of the bent beam 400 to be corrected, select the corresponding pressing point location and the number of pressing plates 210. Rotate the pressing plates 210 to the appropriate position within the inner cavity of the bent beam 400 to be corrected. Place the pressing plate height block 220 below one end of the pressing plate 210. Tighten the hexagonal nut 240 on the upper part of the support stud 230, and then adjust the locking bolt 250 until the workpiece is fully secured. Screw in the first correction bolt 311 until it is in a non-contact state at the bent surface of the workpiece. Use a precision square to check the 90° error of different points on the surface to be corrected. The correction order is to check the two ends first and then the middle in a symmetrical manner. Screw in the first correction bolts 311 at each location, apply bending force to the first bending surface 420, observe the gap between the corrected first bending surface 420 and the square, and check with a feeler gauge until the angle tolerance requirement is fully met.

[0044] Example 3:

[0045] When the first bending surface 420 of the bending beam 400 to be corrected is less than 90 degrees from the reference surface 410, as shown in FIG. Figure 4 As shown,

[0046] Place the reference surface 410 on the upper surface of the base 110. Position and clamp the workpiece using the same method as described in the correction steps of Example 2. Rotate the flipping pressure block 320 and screw in the third calibration bolt 313 until it contacts the first bending surface 420 of the bent beam 400 to be corrected. Observe the rise of the upper surface of the flipping pressure block 320 until it is slightly lower than the upper surface of the fixed bracket 120. Rotate the limit block 330 to the corresponding angle and screw in the third calibration bolts 313 at each location to apply a bending force to the first bending surface 420. Observe the gap between the corrected first bending surface 420 and the angle ruler. Check with a feeler gauge to ensure that the required angle tolerance is fully met.

[0047] Example 4:

[0048] When the second bending surface 430 and the first bending surface 420 of the bending beam 400 to be corrected are greater than 90 degrees, Figure 1 As shown,

[0049] Place the reference surface 410 on the upper surface of the base 110. The workpiece positioning and clamping methods are the same as the correction steps in Example 2 above. Screw in the second correction bolt 312 to the second bending surface 430 of the bending beam 400 to be corrected, in a non-contact state. Activate a precision square to check the 90° error at different locations on the second bending surface 430. The correction sequence is to first check the ends and then the middle in a symmetrical manner. Screw in the second correction bolt 312 at each location, apply bending force to the second bending surface 430, and observe the gap between the corrected second bending surface 430 and the square. After checking with a feeler gauge, check until the angle tolerance requirements are fully met.

[0050] Example 5:

[0051] When the second bending surface 430 of the bending beam 400 to be corrected is less than 90 degrees from the first bending surface 420, as shown in FIG. Figure 5 As shown,

[0052] Place the reference surface 410 on the upper surface of the base 110. Position and clamp the workpiece using the same method as described in the correction steps of Example 2. Activate the adjustment support 340 and screw the threaded rod 343 into the corresponding position of the nut seat 341, so that the overall length of the threaded fitting is slightly smaller than the inner gap between the bent beam 400 to be corrected and the second bending surface 430. Insert the threaded rod 343 into the corresponding correction position in the inner gap. Unscrew the threaded rod 343 at each location, applying a bending force to the second bending surface 430. Observe the gap between the corrected second bending surface 430 and the angle ruler, and check with a feeler gauge until the angle tolerance requirement is fully met.

[0053] After the calibration is completed, the position line of the corresponding inner rib is drawn on the inner side of the reference surface 410 of the bent beam 400 to be calibrated, and the inner rib is inserted. After the protractor is calibrated, intermittent staggered spot welding is performed on the inner plane butt welding path between the inner rib and the bent beam 400 to be calibrated. During the process, the angle change of each surface is detected with a protractor until the product parts fully meet the angle tolerance requirements. It should be noted that the above-mentioned process of welding the inner rib is an existing known welding technology.

[0054] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A device for correcting a right-angle bent beam, comprising a positioning mechanism (100), wherein the positioning mechanism (100) comprises a base (110), a plurality of fixing brackets (120) and a positioning block (130), wherein the fixing bracket (120) is fixedly connected to one side of an upper surface of the base (110), and the positioning block (130) is fixedly connected to one side of the fixing bracket (120), characterized in that: Also includes: A clamping mechanism (200), the clamping mechanism (200) comprising a plurality of clamping plates (210), support studs (230) and hexagonal nuts (240), the clamping plate (210) being located on the other side of the upper surface of the base (110), one end of the support stud (230) being fixedly mounted on the base (110), and the other end passing through the clamping plate (210) and being cooperatively connected with the hexagonal nut (240); A correction mechanism (300) includes a correction bolt assembly (310) and a flip pressing block (320), wherein the correction bolt assembly (310) includes a first correction bolt (311), a second correction bolt (312) and a third correction bolt (313), wherein the first correction bolt (311) and the second correction bolt (312) are respectively mounted on two vertical surfaces of the fixed bracket (120), the third correction bolt (313) is mounted on one end of the flip pressing block (320), and the other end of the flip pressing block (320) is rotatably connected to the fixed bracket (120).

2. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The fixing bracket (120) is an L-shaped structure, and a reinforcing rib plate is fixed at the back thereof.

3. The device for correcting a right-angle bent beam according to claim 1, characterized in that: A sink is provided on the surface of the base (110), and the sink is 3 mm.

4. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The positioning block (130) has a precision-machined surface for ensuring the formation of a 90-degree reference support surface.

5. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The clamping mechanism (200) further comprises a pressure plate contour block (220) and a locking bolt (250), wherein the pressure plate contour block (220) is placed below one end of the pressure plate (210), and the locking bolt (250) is installed on the other end of the pressure plate (210).

6. The device for correcting a right-angle bent beam according to claim 1, characterized in that: A circular step is provided in the middle of the support stud (230).

7. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The flip pressing block (320) is in a U-shaped structure, and a reinforcing plate is provided at one end away from the rotating side, and the reinforcing plate is cooperatively connected with the third correction bolt (313).

8. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The correction mechanism (300) further comprises a limiting block (330), wherein the limiting block (330) is rotatably connected to the fixed bracket (120) and is used for limiting the position of the flip pressing block (320).

9. The device for correcting a right-angle bent beam according to claim 1, characterized in that: The correction mechanism (300) further includes an adjustment support member (340), the adjustment support member (340) including a nut seat (341), a locking nut (342) and a threaded rod (343), the nut seat (341) being placed on the inner cavity surface of the bending beam (400) to be corrected, the locking nut (342) being sleeved on the threaded rod (343), and the threaded rod (343) being threadedly connected to the nut seat (341).

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