High-strength automotive bracket and method of manufacturing the same

Abstract

The application relates to the field of automobile supports, in particular to a high-strength automobile support which comprises two straight parts, a bent part arranged at one end of the two straight parts, two bending-resistant parts arranged at the inner circle of the bent part, the two ends of the bending-resistant parts being connected to the two ends of the inner circle of the bent part in a one-to-one correspondence, and the two bending-resistant parts being arranged vertically, so that the bent part can bear larger pressure when the turning angle is small, the bent part is not prone to deformation, and the overall strength of the automobile support is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile brackets, and in particular to a high-strength automobile bracket and a manufacturing method thereof. Background Art

[0002] Various brackets are installed in the body of a car for connecting related components, such as steel structure brackets for placing various items such as gearboxes and engines. Therefore, the brackets are required to have high strength to meet the corresponding structural requirements.

[0003] Some existing car brackets have various shapes and have bending points. Some have large bending angles, while others have small bending angles. The specific situation will depend on the environment where the brackets are installed between cars, or to avoid the installation of other components.

[0004] With respect to the above-mentioned related technologies, when the bending angle of the automobile bracket is small, once the automobile bracket is subjected to pressure, the automobile bracket is prone to deformation, and the entire automobile bracket has the defect of low strength. Summary of the Invention

[0005] In order to improve the strength of an automobile bracket, the present application provides a high-strength automobile bracket and a manufacturing method thereof.

[0006] In a first aspect, the present application provides a high-strength automobile bracket adopting the following technical solution.

[0007] A high-strength automobile bracket comprises two straight parts and a curved part provided at one end adjacent to the two straight parts. Two anti-bending parts are provided at the inner circle of the curved part. The two ends of the anti-bending parts are connected to the two ends of the inner circle of the curved part in a one-to-one correspondence. The two anti-bending parts are arranged vertically.

[0008] By adopting the above technical solution, the anti-bending parts can improve the bending resistance of the bend, and the two anti-bending parts are arranged vertically, which greatly increases the bending resistance of the bend while also preventing the overall weight of the bend from increasing too much.

[0009] Optionally, the straight portion and the curved portion are welded, and a circle of reinforcement sheets is welded around two connection points of the straight portion and the curved portion.

[0010] By adopting the above technical solution, the welds at the straight portion and the curved portion are less likely to break, which helps to improve the overall strength of the welded automobile bracket.

[0011] In a second aspect, the present application provides a method for manufacturing a high-strength automobile bracket using the following technical solution.

[0012] A method for manufacturing a high-strength automobile bracket comprises the following steps.

[0013] Step 1: Use a robotic arm to clamp the two straight parts and the curved part, and move the curved part toward the two straight parts until the curved part abuts against the two straight parts.

[0014] Step 2: Weld the straight part and the bent part, and use a clamping device to vertically abut the two anti-bending parts, and then weld them;

[0015] Step 3: The clamping device moves the anti-bending part to the inner circle of the curved part, and at the same time, a circle of reinforcing plates is also moved synchronously to the connection between the straight part and the curved part;

[0016] Step 4: Weld the anti-bending parts to the bent part, and weld the reinforcing plate to the connection points of the straight part and the bent part;

[0017] Step 5: The welded straight and curved parts are lowered for weld inspection and post-weld heat treatment.

[0018] By adopting the above technical solution, the anti-bending part and the reinforcement plate can move at the same time. When the anti-bending part abuts the inner circle of the bend, the reinforcement plate also moves into place. Once the anti-bending part moves to abut the inner circle of the bend, the reinforcement plate does not move into place, which indicates that there is a problem with the position of at least one of the anti-bending part and the reinforcement plate, which helps to improve the positioning accuracy of both the anti-bending part and the reinforcement plate. At the same time, the two anti-bending parts are welded first, and then only one of the anti-bending parts needs to be clamped and moved into the bend, so that the two anti-bending parts can be moved into place synchronously. Compared with the two anti-bending parts moving into the anti-bending parts separately, it is more helpful to improve the overall processing efficiency, free up more space for subsequent welding, and verify whether there is a large error in the welding position of the two anti-bending parts. Because once an error occurs, the anti-bending part cannot be moved into place, and the reinforcement plate cannot correspond to the welds of the straight part and the bend.

[0019] Optionally, the clamping device includes anti-bending part fingers that clamp on both sides of the length direction of an anti-bending part, a finger rod provided on one side of the anti-bending part finger, a sliding rod slidably connected to the finger rod and capable of approaching the anti-bending part finger, a sliding rod screw rotatably connected to the finger rod and threadedly connected to the sliding rod, a sliding rod screw motor provided on the finger rod and driving the sliding rod screw to rotate, two sliding blocks slidably connected to the sliding rod and driving an anti-bending part to move, a bidirectional screw rotatably connected to the sliding rod and threadedly connected to the two sliding blocks to drive the two sliding blocks to move closer or farther away, a bidirectional screw motor provided on the sliding rod and driving the bidirectional screw to rotate, a ring block that moves with the finger rod and is sleeved on the straight part, several plate driving mechanisms provided on the ring block that move the reinforcing plate toward the connection between the straight part and the bent part, an arm plate provided on the mechanical arm that clamps the straight part, and a moving cylinder provided on the arm plate that drives the ring block to move along the length direction of the straight part.

[0020] By adopting the above technical solution, the rotation of the bidirectional screw enables the two sliders to clamp an anti-bending part, and then the slide bar moves to approach the anti-bending part fingers, so that the two anti-bending parts can contact each other in a vertical state. The anti-bending part fingers clamp the two sides of the anti-bending part fingers in the length direction, so as to move the anti-bending part corresponding to the inner circle of the bending part. At the same time, the presence of the ring block makes it less likely for the position of the reinforcing plates clamped by all the plate driving structures to deviate. The presence of the moving cylinder enables the ring block to be moved to the position of the mechanical arm when the mechanical part needs to clamp the straight part, so that the clamping of the straight part can be carried out smoothly.

[0021] Optionally, adjacent sides of the two sliders are rotatably connected with clamping blocks, and the two clamping blocks clamp both ends of an anti-bending part in the length direction. The slide rod is provided with a clamping block motor that drives the two clamping blocks to rotate.

[0022] By adopting the above technical solution, after the two clamping blocks clamp an anti-bending part, they can drive the anti-bending part to rotate, so that the two anti-bending parts are set vertically. There is no need to specifically set the two anti-bending parts vertically before clamping them. It is only necessary to ensure that the two anti-bending parts are clamped at the same angle each time, and then the clamping blocks can drive one anti-bending part to rotate, so that the setting of the overall device is simpler.

[0023] Optionally, the clamping block motor output shaft is coaxially provided with a motor rod, a long sliding groove is opened on the circumferential outer wall of the motor rod, the slider is rotatably connected to the rod groove wheel sleeved on the motor rod, the rod groove wheel is provided with a wheel slider slidably connected to the long sliding groove, the clamping block is rotatably connected to the block groove wheel, and a transmission belt is connected between the block groove wheel and the rod groove wheel.

[0024] By adopting the above technical solution, the motor rod drives the two rod groove wheels to rotate, so that the two clamping blocks can rotate synchronously, and the two ends of the anti-bending part rotate synchronously, so that the rotation of the two ends of the anti-bending part is not prone to deviation, and the anti-bending part is not easily subjected to large torsional force.

[0025] Optionally, adjacent sides of the two clamping blocks are provided with block openings for one end of the anti-bending member to enter, the inner walls of the block openings are inclined, and the width of the block openings increases as they are closer to their own openings.

[0026] By adopting the above technical solution, the end of the anti-bending part can enter the block mouth, so that the position between the two anti-bending parts is not prone to large deviation, and the different width settings of the block mouth can facilitate the end of the anti-bending part to enter the block mouth.

[0027] Optionally, each of the sheet driving mechanisms includes a sleeve rod rotatably connected to the end face of the ring block, a sleeve rod motor provided on the ring block and driving the sleeve rod to rotate, an insertion rod inserted into the sleeve rod, a driving screw rotatably connected to the sleeve rod and threadedly connected to the insertion rod, an insertion rod motor provided on the sleeve rod and driving the screw to rotate, and a reinforcing sheet finger provided at one end of the sleeve rod exposed outside the insertion rod and clamping the reinforcing sheet.

[0028] By adopting the above technical solution, the reinforcing sheet fingers clamp the reinforcing sheet, and then the ring block is moved to the specified position under the drive of the moving cylinder. The sleeve rod rotates so that the reinforcing sheet fingers face the connection between the bent part and the straight part, and then drives the lead screw to rotate, so that the reinforcing sheet fingers move until the reinforcing sheet abuts the straight part and the bent part. After the reinforcing sheet is welded, the insertion rod is reset, and then the sleeve rod is reset.

[0029] Optionally, the anti-bending part finger is rotatably connected to a finger rod, the direction of the rotation axis of the anti-bending part finger is consistent with the moving direction of the sliding rod, and the finger rod is provided with a finger motor that drives the anti-bending part finger to rotate.

[0030] By adopting the above technical solution, after the two anti-bending parts are abutted, the four contacting sides of the two anti-bending parts need to be welded. The fingers of the anti-bending parts can be directly rotated so that the two anti-bending parts can contact different sides facing the laser welding head to facilitate the welding work.

[0031] Optionally, one ring block is provided for each of the two straight parts, a connecting rod is provided between the two ring blocks, the connecting rod is provided with a screw sleeve, an adjusting screw is rotatably connected inside the screw sleeve, the screw sleeve is provided with a screw motor for driving the adjusting screw to rotate, the adjusting screw is threadedly connected to an adjusting rod inserted into the screw sleeve, and the adjusting rod is provided with a finger rod motor for driving the finger rod to move.

[0032] By adopting the above technical solution, when the specifications of the straight part and the curved part change so that the distance between the anti-bending part and the midpoint of the line connecting the two circles of reinforcement plates changes, the adjusting rod moves to make corresponding adjustments.

[0033] In summary, this application has at least one of the following beneficial effects:

[0034] 1. The anti-bending parts can improve the bending resistance of the bend, and the two anti-bending parts are arranged vertically between each other, which greatly increases the bending resistance of the bend while preventing the overall weight of the bend from increasing too much;

[0035] 2. The anti-bending part and the reinforcement plate can move at the same time. When the anti-bending part abuts the inner circle of the bend, the reinforcement plate also moves into place. Once the anti-bending part moves to abut the inner circle of the bend, the reinforcement plate does not move into place, which indicates that there is a problem with the position of at least one of the anti-bending part and the reinforcement plate, which helps to improve the positioning accuracy of both the anti-bending part and the reinforcement plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural schematic diagram of a high-strength automobile support in the application;

[0037] Figure 2 is a structural schematic diagram of a clamping device in a manufacturing method of a high-strength automobile support in the application;

[0038] Figure 3 is a structural schematic diagram of a finger lever towards an adjusting lever side, and a corresponding plug lever of a sleeve lever is removed to show a driving screw structure;

[0039] Figure 4 is a structural schematic diagram of an internal structure of a slide lever upper part.

[0040] The figure mark explanation: 1, straight part; 2, bent part; 21, adjusting lever; 22, screw motor; 23, finger motor; 24, finger lever motor; 25, motor gear; 26, vertical moving rack; 27, slide lever screw; 28, slide lever screw motor; 29, bidirectional screw motor; 3, bending resisting piece; 31, reinforcing piece finger; 32, sleeve lever motor; 33, plug lever motor; 34, block port; 35, lever bottom block; 36, arm plate; 37, connecting rod; 38, screw sleeve; 39, adjusting screw; 4, reinforcing piece; 41, long slide groove; 42, lever groove wheel; 43, wheel slide block; 44, block groove wheel; 45, transmission belt; 46, moving air cylinder; 47, sleeve lever; 48, plug lever; 49, driving screw; 5, bending resisting piece finger; 51, finger lever; 52, slide lever; 53, slide block; 54, bidirectional screw; 55, ring block; 56, piece driving mechanism; 57, clamping block; 58, clamping block motor; 59, motor lever. DETAILED DESCRIPTION

[0041] The application is further described in detail below in combination with the drawings.

[0042] The application embodiment discloses a high-strength automobile support, referring to Figure 1 , comprising two straight parts 1 and a bent part 2, the straight parts 1 and the bent part 2 can be stamped and formed, the two straight parts 1 are welded at two ends of the bent part 2 one by one, the straight parts 1 and the bent part 2 in the embodiment are both horizontally arranged, the two straight parts 1 are parallel in length direction, two perpendicular bending resisting pieces 3 are welded at an inner ring of the straight part 1, the two bending resisting pieces 3 are close to two ends of the bent part 2 one by one in length direction, the two bending resisting pieces 3 are horizontally arranged and vertically arranged in the embodiment, and the horizontally arranged bending resisting piece 3 is below the vertically arranged bending resisting piece 3. A reinforcing piece 4 is welded around a welding point of the two straight parts 1 and the bent part 2, the reinforcing piece 4 is arranged on four sides of the straight part 1 in the embodiment, the reinforcing piece 4 is connected to the straight part 1 and the bent part 2, and the straight part 1, the bent part 2, the bending resisting piece 3 and the reinforcing piece 4 can be made of aluminum alloy.

[0043] The implementation principle of a high-strength automobile bracket in the embodiment of the present application is as follows: the curved portion 2 is not easily bent under the action of the anti-bending member 3, and the welding point between the straight portion 1 and the curved portion 2 is not easily broken under the action of the reinforcing plate 4.

[0044] The embodiment of the present application also discloses a method for manufacturing a high-strength automobile bracket, which specifically includes the following steps.

[0045] Step 1: Use a robotic arm to clamp the two straight parts 1 and the curved part 2, and move the curved part 2 toward the two straight parts 1 until the curved part 2 abuts against the two straight parts 1. The robotic arm that clamps the straight parts 1 does not need to move;

[0046] Step 2: Weld the straight portion 1 and the bent portion 2, and simultaneously use a clamping device to vertically abut the two anti-bending parts 3, and then weld them;

[0047] Step 3: The clamping device clamps and moves the anti-bending part 3 to the inner circle of the curved part 2, and at the same time, a circle of reinforcing plates 4 are also synchronously moved to the connection between the straight part 1 and the curved part 2;

[0048] Step 4: Weld the anti-bending member 3 to the bent portion 2, and weld the reinforcing plate 4 to the connection point between the straight portion 1 and the bent portion 2;

[0049] Step 5: The welded straight portion 1 and the bent portion 2 are lowered for weld inspection and post-weld heat treatment.

[0050] Reference Figure 2 The clamping device includes an arm plate 36 provided on the mechanical arm that clamps the straight part 1. One arm plate 36 is provided for each of the two straight parts 1. Each arm plate 36 is detachably connected to a mobile cylinder 46 by bolts. The moving direction of the power rod of the mobile cylinder 46 is consistent with the length direction of the corresponding straight part 1. The mobile cylinder 46 has its own guide rod. Each power rod of the mobile cylinder 46 is fixedly connected to a circular ring block 55. The ring block 55 can be mounted on the mechanical arm that clamps the straight part 1 and the corresponding straight part 1. Each ring block 55 is provided with several sheet driving mechanisms 56 for moving the reinforcement sheet 4 toward the connection between the straight part 1 and the bent part 2. Each sheet driving mechanism 56 corresponds to only one reinforcement sheet 4.

[0051] Reference Figure 2 and Figure 3The sheet driving mechanism 56 includes a sleeve rod 47 rotatably connected to the end face of the ring block 55. Several sleeve rods 47 are arranged around the axis of the ring block 55. Each sleeve rod 47 corresponds to a reinforcement sheet 4. The direction of the rotation axis of the sleeve rod 47 is perpendicular to the radial direction of the ring block 55. The ring block 55 is fixedly connected to the sleeve rod motor 32 at the rotation point of the sleeve rod 47 with an output shaft coaxially fixed. The sleeve rod 47 is sleeved with an insert rod 48 at one end away from its own rotation point. The insert rod 48 has a rectangular cross-section. The insert rod 48 is slidably connected to the inner wall of the sleeve rod 47. The inner wall of the sleeve rod 47 is rotatably connected to a driving screw 49, which is plugged and threadedly connected to the insert rod 48. The end of the sleeve rod 47 is fixedly connected to the insert rod motor 33 which is coaxially fixed to the driving screw 49. The exposed end of the sleeve rod 47 is detachably connected to a reinforcement sheet finger 31. The reinforcement sheet finger 31 can be a pneumatic finger. Each reinforcement sheet finger 31 clamps a reinforcement sheet 4.

[0052] When the reinforcing sheet finger 31 completes the clamping of the reinforcing sheet 4, the moving cylinder 46 drives the ring block 55 to move. When the ring block 55 moves to the predetermined position, the sleeve rod motor 32 is connected to the external power supply to rotate the sleeve rod 47, so that the reinforcing sheet finger 31 is directed toward the welding point of the straight part 1 and the bent part 2. Then the insertion rod motor 33 drives the lead screw 49 to rotate, so that the insertion rod 48 moves together with the reinforcing sheet finger 31 toward the connection between the straight part 1 and the bent part 2, so that the reinforcing sheet 4 abuts against the straight part 1 and the bent part 2, and then the laser welding head welds the reinforcing sheet 4.

[0053] Reference Figure 2 and Figure 3 A connecting rod 37 is detachably connected between the two ring blocks 55. A screw sleeve 38 is fixedly connected to the upper surface of the connecting rod 37. An adjusting rod 21 is sleeved on the end of the screw sleeve 38 away from the ring block 55. The adjusting rod 21 is rectangular, and the end of the adjusting rod 21 exposed in the screw sleeve 38 can move toward the inner circle of the curved portion 2. An adjusting screw 39 is rotatably connected to the inner wall of the screw sleeve 38. The adjusting screw 39 is plugged into and threadedly connected to the adjusting rod 21. The screw sleeve 38 is fixedly connected to a screw motor 22, whose output shaft is coaxially fixed to the adjusting screw 39. The length of the adjusting rod 21 exposed in the screw sleeve 38 is only adjusted when the dimensions of the straight portion 1 and the curved portion 2 change, causing a change in the distance between the inner circle of the curved portion 2 and the midpoint of the line connecting the two ring blocks 55.

[0054] Reference Figure 2 and Figure 3The adjusting rod 21 is connected to a vertical finger rod 51 by sliding along one end away from the screw sleeve 38. The bottom end of the finger rod 51 is integrally formed with a rod bottom block 35. The upper surface of the rod bottom block 35 is rotatably connected to the anti-bending part finger 5. The anti-bending part finger 5 is used to clamp the two sides of the horizontal anti-bending part 3 in the length direction. The lower surface of the rod bottom block 35 is fixedly connected to a finger motor 23 with an output shaft coaxially fixedly connected to the rotation point of the anti-bending part finger 5. The rotation axis of the output shaft of the finger motor 23 is vertical. The finger motor 23 can drive the anti-bending part finger 5 to rotate, and after the anti-bending part finger 5 rotates 270°, the four sides of the contact between the two anti-bending parts 3 have been welded, and then the anti-bending part finger 5 is reset and rotated. The end of the adjusting rod 21 close to the finger rod 51 is fixedly connected to the finger rod motor 24, and the output shaft of the finger rod motor 24 is coaxially fixedly connected to the motor gear 25. The adjusting rod 21 is slidably connected to one end of the finger rod 51 and is wedge-shaped. The inner wall of the finger rod 51 for the sliding of the adjusting rod 21 is fixedly connected to a vertical rack 26 that is vertical and meshes with the motor gear 25, so that after the welding of the corresponding bending part 2 of the anti-bending part 3 is completed, the anti-bending part finger 5 can move downward to avoid the horizontal anti-bending part 3.

[0055] Reference Figure 2 and Figure 4 The finger rod 51 is connected to a horizontal slide rod 52 in a vertical sliding direction away from the side of the adjustment rod 21. The length direction of the slide rod 52 is consistent with the length direction of the anti-bending member 3. The finger rod 51 is rotatably connected to a vertical slide rod screw 27. The slide rod screw 27 passes through and is threadedly connected to the part of the slide rod 52 located in the finger rod 51. The upper end of the finger rod 51 is fixedly connected to a slide rod screw motor 28, whose output shaft is coaxially fixedly connected to the slide rod screw 27. The slide rod 52 is connected to two sliders 53 in a sliding direction along its own length. A bidirectional screw 54 is rotatably connected to the slide rod 52 and is threadedly connected to the slider 53. The threads on both sides of the center point of the bidirectional screw 54 are in opposite directions. The two sliders 53 are respectively located at equal distances on both sides of the center point of the bidirectional screw 54. The outer wall of one end of the slide rod 52 is fixedly connected to a bidirectional screw motor 29, whose output shaft is coaxially fixedly connected to the bidirectional screw 54.

[0056] Reference Figure 4 The vertical sides of the two sliders 53 are rotatably connected with cylindrical clamping blocks 57. The direction of the rotation axis of the clamping block 57 is consistent with the moving direction of the slider 53. Block openings 34 are opened on the end faces of the two clamping blocks 57. The length direction of the block opening 34 is consistent with the radial direction of the clamping block 57. One end of the block opening 34 in the length direction passes through the outer wall of the circumference of the clamping block 57. The block opening 34 is for the length direction end of the anti-bending part 3 to enter. The opening width of the block opening 34 at the end face of the clamping block 57 is greater than the width of the block opening 34 near the opening of the slider 53, so that the end of the anti-bending part 3 can enter the block opening 34, and only the upper part of the length direction end of the vertical anti-bending part 3 will enter the block opening 34, so that the bottom of the vertical anti-bending part 3 can smoothly abut against the horizontal anti-bending part 3.

[0057] Reference Figure 4 The two clamping blocks 57 are coaxially fixedly connected to the block sheave 44 located in their respective corresponding sliders 53. The two sliders 53 are rotatably connected to the rod sheave 42 at one end of the slide bar 52. A transmission belt 45 is connected between the block sheave 44 and the rod sheave 42 of the same slider 53. The slide bar 52 is rotatably connected to a motor rod 59 that passes through the slider 53 and the rod sheave 42. The motor rod 59 is located on the side of the bidirectional screw 54 close to the clamping block 57. The length direction of the motor rod 59 is consistent with the bidirectional screw 54. The length directions are consistent, and the two rod groove wheels 42 are connected to the motor rod 59 in a sliding manner along the length direction of the motor rod 59. The outer wall of the circumference of the motor rod 59 is provided with a long slide groove 41 along its own length direction. The inner walls of the circumference of the two rod groove wheels 42 are fixedly connected with wheel sliders 43, and the wheel sliders 43 are connected to the inner walls of the long slide groove 41 in a sliding manner along the length direction of the long slide groove 41. The end of the slide rod 52 away from the bidirectional screw motor 29 is fixedly connected with a clamping block motor 58, and the output shaft of the clamping block motor 58 is coaxially fixedly connected to the motor rod 59.

[0058] After the first side is welded, the two sliders 53 move away from each other so that the vertical anti-bending part 3 is no longer clamped by the clamps 57. Then the anti-bending part fingers 5 rotate 90°. At this time, the two sliders 53 move closer again so that the end faces of the two clamps 57 abut against the two vertical side faces in the length direction of the vertical anti-bending part 3. Then the second side contacted by the two anti-bending parts 3 is welded. Repeat this process until all four sides are welded.

[0059] The implementation principle of a high-strength automobile bracket manufacturing method in an embodiment of the present application is: the anti-bending part 3 and the reinforcement plate 4 are clamped and moved into position synchronously, so as to determine whether the reinforcement plate 4 and the anti-bending part 3 are both in a correct position, which helps to improve the quality of the manufactured automobile bracket.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for manufacturing a high-strength automobile bracket, characterized in that: The high-strength automobile bracket comprises two straight parts (1), a curved part (2) provided at one end of the two straight parts (1), two anti-bending parts (3) provided at the inner circle of the curved part (2), two ends of the anti-bending parts (3) are connected to the two ends of the inner circle of the curved part (2) in a one-to-one correspondence, and the two anti-bending parts (3) are arranged vertically; the straight part (1) and the curved part (2) are welded, and a circle of reinforcing plates (4) are welded around the two connection points of the straight part (1) and the curved part (2); the specific steps include: Step 1: Use a robotic arm to clamp the two straight parts (1) and the curved part (2), and move the curved part (2) toward the two straight parts (1) until the curved part (2) abuts against the two straight parts (1); Step 2: Weld the straight portion (1) and the bent portion (2), and simultaneously use a clamping device to vertically abut the two anti-bending parts (3), and then weld them; Step 3: The clamping device clamps and moves the anti-bending member (3) to the inner circle of the curved portion (2), and simultaneously a circle of reinforcing sheets (4) are also synchronously moved to the connection between the straight portion (1) and the curved portion (2); Step 4: Weld the anti-bending member (3) and the bent portion (2), and weld the reinforcing plate (4) to the connection points of the straight portion (1) and the bent portion (2); Step 5, the straight part (1) and the bent part (2) after welding are lowered for weld inspection and post-weld heat treatment; the clamping device includes an anti-bending part finger (5) clamped on both sides of the length direction of an anti-bending part (3), a finger rod (51) provided on one side of the anti-bending part finger (5), a slide rod (52) slidably connected to the finger rod (51) and capable of approaching the anti-bending part finger (5), a slide rod screw (27) rotatably connected to the finger rod (51) and threadedly connected to the slide rod (52), a slide rod screw motor (28) provided on the finger rod (51) and driving the slide rod screw (27) to rotate, and two sliders ( 53), a bidirectional lead screw (54) rotatably connected to the slide bar (52) and threadedly connected to the two sliders (53) to drive the two sliders (53) to move closer or farther away, a bidirectional lead screw motor (29) provided on the slide bar (52) and driving the bidirectional lead screw (54) to rotate, a ring block (55) moving together with the finger rod (51) and sleeved on the straight portion (1), a plurality of plate driving mechanisms (56) provided on the ring block (55) for moving the reinforcing plate (4) toward the connection between the straight portion (1) and the curved portion (2), an arm plate (36) provided on the mechanical arm for clamping the straight portion (1), and a moving cylinder (46) provided on the arm plate (36) and driving the ring block (55) to move along the length direction of the straight portion (1).

2. The method for manufacturing a high-strength automobile bracket according to claim 1, characterized in that: The adjacent sides of the two sliders (53) are rotatably connected with clamping blocks (57), and the two clamping blocks (57) clamp the two ends of the anti-bending member (3) in the length direction. The slide bar (52) is provided with a clamping block motor (58) for driving the two clamping blocks (57) to rotate.

3. The method for manufacturing a high-strength automobile bracket according to claim 2, characterized in that: The output shaft of the clamping block motor (58) is coaxially provided with a motor rod (59), a long sliding groove (41) is provided on the circumferential outer wall of the motor rod (59), the slider (53) is rotatably connected to a rod groove wheel (42) sleeved on the motor rod (59), the rod groove wheel (42) is provided with a wheel slider (43) slidably connected to the long sliding groove (41), the clamping block (57) is rotatably connected to a block groove wheel (44), and a transmission belt (45) is connected between the block groove wheel (44) and the rod groove wheel (42) for transmission.

4. The method for manufacturing a high-strength automobile bracket according to claim 2, characterized in that: The adjacent sides of the two clamping blocks (57) are each provided with a block opening (34) for one end of the anti-bending member (3) to enter. The inner wall of the block opening (34) is inclined, and the width of the block opening (34) increases as it approaches its own opening.

5. The method for manufacturing a high-strength automobile bracket according to claim 1, characterized in that: Each of the sheet driving mechanisms (56) includes a sleeve rod (47) rotatably connected to the end face of the ring block (55), a sleeve rod motor (32) provided on the ring block (55) and driving the sleeve rod (47) to rotate, an insertion rod (48) plugged into the sleeve rod (47), a driving screw (49) rotatably connected to the sleeve rod (47) and threadedly connected to the insertion rod (48), an insertion rod motor (33) provided on the sleeve rod (47) and driving the screw (49) to rotate, and a reinforcing sheet finger (31) provided at one end of the insertion rod (48) exposed outside the sleeve rod (47) and clamping the reinforcing sheet (4).

6. The method for manufacturing a high-strength automobile bracket according to claim 1, characterized in that: The anti-bending member finger (5) is rotatably connected to the finger rod (51), the rotation axis direction of the anti-bending member finger (5) is consistent with the moving direction of the slide rod (52), and the finger rod (51) is provided with a finger motor (23) for driving the anti-bending member finger (5) to rotate.

7. The method for manufacturing a high-strength automobile bracket according to claim 1, characterized in that: The ring block (55) is provided with one corresponding to each of the two straight portions (1). A connecting rod (37) is provided between the two ring blocks (55). The connecting rod (37) is provided with a screw sleeve (38). An adjusting screw (39) is rotatably connected in the screw sleeve (38). The screw sleeve (38) is provided with a screw motor (22) for driving the adjusting screw (39) to rotate. The adjusting screw (39) is threadedly connected to an adjusting rod (21) plugged into the screw sleeve (38). The adjusting rod (21) is provided with a finger rod motor (24) for driving the finger rod (51) to move.

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