Curved surface multi-joint cross beam manufacturing device and method

Abstract

The embodiment of the invention relates to a curved-surface multi-joint cross beam manufacturing device and method.The device comprises a numerical control machining center, the numerical control machining center comprises a conveying mechanism, a position adjusting mechanism and a machining mechanism, the conveying mechanism is used for conveying curved-surface pipes to a machining station, the position adjusting mechanism is used for conducting position calibration on the curved-surface pipes at the machining station, and the machining mechanism is used for machining the curved-surface pipes at the machining station; the machining mechanism is used for machining the curved-surface pipe subjected to position calibration; the jig frame mechanism comprises a base, a first positioning assembly and a second positioning assembly, the first positioning assembly and the second positioning assembly are arranged on the base, the first positioning assembly is used for positioning the curved-surface pipe, and the second positioning assembly is used for positioning the multiple bracket structures relative to the curved-surface pipe; and the welding mechanism comprises a welding spot confirmation module and a welding module, the welding spot confirmation module is used for determining the welding spot position of the bracket structure on the curved-surface pipe, and the welding module is used for welding the bracket structure to the curved-surface pipe according to the welding spot position. The requirement for controlling the manufacturing precision of the multi-joint cross beam with the complex curved surface can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a device and method for manufacturing a curved multi-joint crossbeam. Background Art

[0002] With the development of bridge steel structures, steel guardrails, as auxiliary structures of bridge decks, are also constantly being updated. Not only are the structures of steel guardrails becoming more and more complex and the requirements for appearance quality are becoming higher and higher, but also during assembly, it is becoming increasingly difficult to control the geometric dimensional accuracy of steel guardrails.

[0003] In the prior art, the beam structure of the steel guardrail is generally processed and manufactured by traditional assembly and welding methods, but this can only meet the processing requirements of beams with regular structures and few joints, and cannot meet the requirements of controlling the manufacturing accuracy of beams with complex curved surfaces and multiple joints.

[0004] Therefore, it is necessary to provide a new technical solution to improve one or more problems existing in the above solutions.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The purpose of the embodiments of the present disclosure is to provide a device and method for manufacturing a curved multi-joint crossbeam, which can not only improve the processing efficiency, but also meet the requirements for precise control of the connection accuracy of the manufacturing of complex curved multi-joint crossbeams.

[0007] According to a first aspect of an embodiment of the present disclosure, there is provided a device for manufacturing a curved multi-joint beam, comprising:

[0008] A CNC machining center comprises a transport mechanism, a position adjustment mechanism and a machining mechanism, wherein the transport mechanism is used to transport a curved surface tube to a machining station, the position adjustment mechanism is used to calibrate the position of the curved surface tube at the machining station, and the machining mechanism is used to process the calibrated curved surface tube;

[0009] The tire frame mechanism comprises a base and a first positioning assembly and a second positioning assembly arranged on the base, wherein the first positioning assembly is used to position the curved tube, and the second positioning assembly is used to position a plurality of bracket structures relative to the curved tube;

[0010] The welding mechanism comprises a welding point confirmation module and a welding module, wherein the welding point confirmation module is used to determine the welding point positions of the bracket structure on the curved tube, and the welding module is used to weld the bracket structure to the curved tube according to the welding point positions.

[0011] In an exemplary embodiment of the present disclosure, the position adjustment mechanism includes:

[0012] A first scanning module, the first scanning module is used to scan the curved tube to obtain first scanning model data;

[0013] A robotic arm is used to adjust the position of the curved tube according to the first scanning model data and the three-dimensional modeling data of the curved tube.

[0014] In an exemplary embodiment of the present disclosure, the processing mechanism comprises:

[0015] A cutting unit, wherein the cutting unit is used to cut the curved tube along the axial direction of the curved tube;

[0016] A hole processing unit, the hole processing unit is used to process special-shaped holes on the curved tube;

[0017] A reference line setting unit is used to set a reference line on the curved tube.

[0018] In an exemplary embodiment of the present disclosure, the first positioning component includes:

[0019] A horizontal support frame, the horizontal support frame is arranged on the base and is used to support the outer surface of the curved tube;

[0020] Two first position-limiting support members are arranged on the base at intervals, the horizontal support frame is located between the two first position-limiting support members, and the first position-limiting support member is used to abut against the end of the curved tube along the axial direction thereof to position the curved tube along the axial direction of the curved tube;

[0021] A limit support plate connected to the horizontal support frame, and the limit support plate is arranged at an angle with respect to the height direction of the horizontal support frame;

[0022] A positioning shaft is detachably connected to the limiting support plate, and the positioning shaft and the limiting support plate are vertically arranged.

[0023] In an exemplary embodiment of the present disclosure, the second positioning component includes:

[0024] A bracket support, the bracket support is arranged on the base and is used to support the bracket structure along the height direction of the bracket support;

[0025] Two first bracket limiting support plates are arranged on the bracket support member at intervals along the axial direction of the curved tube, and are used to abut against the two side ends of the bracket structure along the axial direction of the curved tube to position the bracket structure along the axial direction of the curved tube;

[0026] A second bracket limiting support plate is arranged on the bracket support member and is perpendicular to the first bracket limiting support plate, and the second bracket limiting support plate is used to position the bracket structure along the width direction of the bracket structure;

[0027] Among them, the width direction of the bracket structure, the axial direction of the curved tube and the height direction of the bracket support are perpendicular to each other.

[0028] According to a second aspect of an embodiment of the present disclosure, a method for manufacturing a curved multi-joint crossbeam is provided, which is applied to the curved multi-joint crossbeam manufacturing device, and the method comprises:

[0029] The curved tube is transported, positioned and processed by the CNC machining center;

[0030] Positioning the curved tube using a first positioning assembly of a tire frame mechanism;

[0031] Using a second positioning assembly of the tire frame mechanism to position the plurality of bracket structures relative to the curved tube;

[0032] The welding point positions of the bracket structure on the curved tube are determined by a welding mechanism, and the bracket structure is welded to the curved tube according to the welding point positions.

[0033] In an exemplary embodiment of the present disclosure, the method of transporting, calibrating and processing the curved tube by a CNC machining center includes:

[0034] The curved tube is transported to a processing station by a transport mechanism of the CNC machining center;

[0035] Scanning the curved tube by a first scanning module of the CNC machining center to obtain first scanning model data;

[0036] According to the first scanning model data and the three-dimensional modeling data of the curved tube, using the robot arm of the CNC machining center to adjust the position of the curved tube;

[0037] Cutting the curved tube by a cutting unit of the CNC machining center;

[0038] Scanning the curved tube again by the first scanning module to obtain second scanning model data;

[0039] According to the second scanning model data and the three-dimensional modeling data of the curved tube, the hole processing unit of the CNC machining center is used to process special-shaped holes on the curved tube, and the baseline marking unit of the CNC machining center is used to mark a baseline on the curved tube.

[0040] In an exemplary embodiment of the present disclosure, the curved tube has two end connection holes arranged opposite to each other in the radial direction thereof, and the first positioning assembly of the tire frame mechanism is used to position the curved tube, including:

[0041] Placing the curved tube on the horizontal support frame of the first positioning assembly, and making the end of the curved tube along the axial direction thereof abut against the first limiting support member of the first positioning assembly;

[0042] Pass the positioning shaft through the two end connection holes on the curved tube;

[0043] The curved tube is adjusted by rotating around the axial direction of the curved tube until the positioning shaft is perpendicular to the limiting support plate on the horizontal support frame, and then the positioning shaft is fixed to the limiting support plate.

[0044] In an exemplary embodiment of the present disclosure, the second positioning assembly of the tire frame mechanism is used to position multiple bracket structures relative to the curved tube, including:

[0045] Align the bracket structure with the accommodation space between the two first bracket limiting support plates of the second positioning assembly, and make the notch of the bracket structure face the curved tube;

[0046] The bracket structure is moved toward the bracket support of the second positioning assembly until the bottom of the bracket structure is in contact with the bracket support.

[0047] In an exemplary embodiment of the present disclosure, determining the welding point positions of the bracket structure on the curved tube by a welding mechanism, and welding the bracket structure to the curved tube according to the welding point positions, comprises:

[0048] Hoisting the first positioning assembly, the second positioning assembly, the curved tube and the bracket structure to a welding station;

[0049] Scanning the curved tube and the bracket structure by a second scanning module of the welding mechanism to obtain third scanning model data;

[0050] Determine the welding arc starting point position and the welding arc extinction point position of the bracket structure on the curved tube according to the third scanning model data;

[0051] According to the welding start command, the bracket structure is welded to the curved pipe according to the welding arc starting point position and the welding arc extinction point position.

[0052] The technical solution provided by the present disclosure may have the following beneficial effects:

[0053] In the embodiment of the present disclosure, the curved tube is subjected to fine machining pretreatment by a numerical control machining center, the curved tube is positioned by a first positioning assembly of a tire frame mechanism, and multiple bracket structures are positioned relative to the curved tube by a second positioning assembly, so as to ensure accurate control of the relative positions of the curved tube of the crossbeam and the multiple bracket structures, the welding point confirmation module of the welding mechanism is used to determine the welding point positions of the bracket structure on the curved tube, and the welding module of the welding mechanism is used to weld the bracket structure to the curved tube according to the welding point positions, so as to ensure that multiple bracket structures are accurately welded to the curved tube. This embodiment can realize the assembly line processing of the crossbeam of the steel guardrail and improve the processing efficiency by cooperating with a numerical control machining center, a first positioning assembly, a second positioning assembly and a welding mechanism, and can also realize the control of the processing accuracy of the crossbeam from multiple aspects such as the processing accuracy of the curved tube, the relative position of the curved tube and the bracket structure, and the welding accuracy, so as to meet the demand for controlling the manufacturing accuracy of the complex curved multi-joint crossbeam.

[0054] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0056] Figure 1 A simplified structural diagram showing a first positioning assembly in an exemplary embodiment of the present disclosure for positioning a curved tube Figure 1 ;

[0057] Figure 2 A simplified structural diagram showing a second positioning assembly in an exemplary embodiment of the present disclosure for positioning a bracket structure Figure 1 ;

[0058] Figure 3 A simplified structural schematic diagram showing a welding mechanism in an exemplary embodiment of the present disclosure used for welding a curved multi-joint beam;

[0059] Figure 4A simplified structural diagram showing a steel guardrail in an exemplary embodiment of the present disclosure Figure 1 ;

[0060] Figure 5 A simplified structural diagram showing a steel guardrail in an exemplary embodiment of the present disclosure Figure 2 ;

[0061] Figure 6 A simplified structural schematic diagram showing a curved tube in an exemplary embodiment of the present disclosure;

[0062] Figure 7 A simplified schematic diagram showing a curved tube and bracket structure in an exemplary embodiment of the present disclosure;

[0063] Figure 8 A simplified structural diagram showing a first positioning assembly in an exemplary embodiment of the present disclosure for positioning a curved tube Figure 2 ;

[0064] Fig. 9 A simplified structural diagram showing a first positioning assembly in an exemplary embodiment of the present disclosure for positioning a curved tube Figure 3 ;

[0065] Fig.10 A simplified structural schematic diagram showing a curved tube on a horizontal support frame after being positioned by a first positioning assembly in an exemplary embodiment of the present disclosure;

[0066] Fig.11 A simplified structural diagram showing a second positioning assembly in an exemplary embodiment of the present disclosure for positioning a bracket structure Figure 2 ;

[0067] Fig.12 A simplified structural diagram showing a second positioning assembly in an exemplary embodiment of the present disclosure for positioning a bracket structure Figure 3 ;

[0068] Fig.13 A flow chart showing the steps of a method for manufacturing a curved multi-joint beam in an exemplary embodiment of the present disclosure. Description of the drawings:

[0070] 1. Column; 2. Curved multi-joint beam; 21. Curved tube; 211. End connection hole; 212. Connection hole; 22. Bracket structure;

[0071] 100, base; 200, first positioning assembly; 210, horizontal support frame; 220, first limit support member; 230, limit support plate; 2301, positioning hole; 240, positioning axis; 300, second positioning assembly; 310, bracket support member; 320, first bracket limit support plate; 330, second bracket limit support plate; 400, welding mechanism. DETAILED DESCRIPTION

[0072] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0073] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0074] In this example implementation, a device for manufacturing a curved multi-joint beam is first provided. Figures 1 to 3 As shown in , the curved multi-joint beam manufacturing device may include:

[0075] The CNC machining center includes a transport mechanism, a position adjustment mechanism and a machining mechanism, wherein the transport mechanism is used to transport the curved surface tube 21 to the machining station, the position adjustment mechanism is used to calibrate the position of the curved surface tube 21 at the machining station, and the machining mechanism is used to process the calibrated curved surface tube 21;

[0076] The tire frame mechanism includes a base 100 and a first positioning assembly 200 and a second positioning assembly 300 disposed on the base 100, wherein the first positioning assembly 200 is used to position the curved tube 21, and the second positioning assembly 300 is used to position the plurality of bracket structures 22 relative to the curved tube 21;

[0077] The welding mechanism 400 includes a welding point confirmation module and a welding module. The welding point confirmation module is used to determine the welding point positions of the bracket structure 22 on the curved tube 21. The welding module is used to weld the bracket structure 22 to the curved tube 21 according to the welding point positions.

[0078] In the embodiment of the present disclosure, the curved tube 21 is subjected to fine machining pretreatment by a CNC machining center, the curved tube 21 is positioned by the first positioning component 200 of the tire frame mechanism, and the multiple bracket structures 22 are positioned relative to the curved tube 21 by the second positioning component 300, so as to ensure precise control of the relative positions of the curved tube 21 of the crossbeam and the multiple bracket structures 22, the welding point confirmation module of the welding mechanism 400 is used to determine the welding point positions of the bracket structure 22 on the curved tube 21, and the welding module of the welding mechanism 400 is used to weld the bracket structure 22 to the curved tube 21 according to the welding point positions, thereby ensuring that the multiple bracket structures 22 are accurately welded to the curved tube 21. This embodiment cooperates with a CNC machining center, a first positioning assembly 200, a second positioning assembly 300 and a welding mechanism 400 to achieve assembly line processing of the crossbeams of the steel guardrail to improve processing efficiency, and can also control the processing accuracy of the crossbeams from multiple aspects such as the processing accuracy of the curved tube 21, the relative position of the curved tube 21 and the bracket structure 22, and the welding accuracy, so as to meet the demand for controlling the manufacturing accuracy of complex curved multi-joint crossbeams.

[0079] It should be noted that the reference Figures 4 to 7 As shown in , in this embodiment, the steel guardrail mentioned in the background technology includes a column 1 and a curved multi-joint beam 2 assembled on the column 1. This embodiment proposes a device for processing and manufacturing a curved multi-joint beam.

[0080] Next, the above-mentioned curved multi-joint beam manufacturing device in this example implementation will be described in more detail.

[0081] In one embodiment, the position adjustment mechanism comprises:

[0082] A first scanning module, the first scanning module is used to scan the curved tube 21 located at the processing station to obtain first scanning model data;

[0083] The robot arm is used to adjust the position of the curved tube 21 according to the first scanning model data and the three-dimensional modeling data of the curved tube 21.

[0084] The above-mentioned first scanning module cooperates with the robot arm to adjust the position of the curved tube 21 located at the processing station, which is beneficial to control and improve the accuracy of cutting the curved tube 21. When the position of the curved tube 21 is adjusted according to the first scanning model data and the three-dimensional modeling data of the curved tube 21, the position of the curved tube 21 is mainly corrected by comparing the first scanning model data with the three-dimensional modeling data of the curved tube 21.

[0085] It should be noted that the three-dimensional modeling data of the curved tube 21 is used to establish an accurate three-dimensional model of the curved tube 21 using three-dimensional software when designing the structure of the curved tube 21. The three-dimensional modeling data of the curved tube 21 can be imported into the CNC machining center in advance so that it can be used when needed.

[0086] In one embodiment, the processing mechanism comprises:

[0087] A cutting unit, the cutting unit is used to cut the curved tube 21 along the axial direction of the curved tube 21;

[0088] A hole processing unit, the hole processing unit is used to process special-shaped holes on the curved tube 21;

[0089] A reference line setting unit is used to set a reference line on the curved tube 21 .

[0090] By cooperating with the cutting processing unit, the hole processing unit and the reference line marking unit, the curved tube 21 after position calibration can be processed in steps. Specifically, the cutting processing unit can cut the curved tube 21 into multiple parts along the axial direction of the curved tube 21 to achieve batch processing, the hole processing unit can open special-shaped holes on the curved tube 21 according to the three-dimensional modeling data of the curved tube 21, and the reference line marking unit can mark a reference line on the curved tube 21, so as to control the accuracy of the assembly bracket structure 22 later.

[0091] Optionally, the transport mechanism of the CNC machining center can be a conveyor belt, which includes but is not limited to a driving motor, a driving wheel, a driven wheel, and a conveyor belt wound around the driving wheel and the driven wheel. The driving wheel is connected to the output end of the driving motor, and the driving motor drives the driving wheel to rotate, thereby driving the driven wheel and the conveyor belt to move. By placing the curved tube 21 on the conveyor belt, the curved tube 21 can be transported by the conveying module and transported to the processing station.

[0092] It should be noted that, during the process of the CNC machining center processing the curved tube 21, the first scanning module can be reused. On the one hand, the data scanned by the first scanning module can be used to calibrate the position of the curved tube 21. On the other hand, the data scanned by the first scanning module can also be used to determine the machining baseline during machining, so as to ensure accurate control of the positions of the special-shaped holes and the reference lines on the curved tube 21. The special-shaped holes include the end connection holes 211 and the connection holes 212 opened on the curved tube 21.

[0093] In order to facilitate understanding of the CNC machining center in this embodiment, the operation flow of the CNC machining center is given below:

[0094] The curved tube 21 is transported to the processing station by the transport mechanism of the CNC machining center;

[0095] Scanning the curved tube 21 by a first scanning module of a numerical control machining center to obtain first scanning model data;

[0096] According to the first scanning model data and the three-dimensional modeling data of the curved tube 21, the position of the curved tube 21 is adjusted by using a mechanical arm of a numerical control machining center to calibrate the position of the curved tube 21;

[0097] After the position calibration of the curved tube 21 is completed, the curved tube 21 is cut by a cutting unit of a CNC machining center;

[0098] After the cutting process is completed, the curved tube 21 is scanned again by the first scanning module to obtain second scanning model data;

[0099] According to the second scanning model data and the three-dimensional modeling data of the curved tube 21 , the hole machining unit of the CNC machining center is used to machine special-shaped holes on the curved tube 21 , and the reference line marking unit of the CNC machining center is used to mark a reference line on the curved tube 21 .

[0100] It should be noted that, by using the CNC machining center provided in this embodiment to process the curved tube 21, the cutting accuracy can be maintained within the range of ±0.05 mm, and compared with traditional manual cutting, the work efficiency is also significantly improved.

[0101] In one embodiment, reference Figures 8 to 10 As shown in FIG. , the first positioning assembly 200 includes:

[0102] A horizontal support frame 210, which is disposed on the base 100 and is used to support the outer surface of the curved tube 21;

[0103] Two first position-limiting support members 220 are arranged on the base 100 at intervals, and the horizontal support frame 210 is located between the two first position-limiting support members 220. The first position-limiting support member 220 is used to abut against the end of the curved tube 21 along its axial direction to position the curved tube 21 along the axial direction of the curved tube 21;

[0104] The limiting support plate 230 is connected to the horizontal support frame 210, and the limiting support plate 230 is arranged at an angle with the height direction of the horizontal support frame 210;

[0105] The positioning shaft 240 is detachably connected to the limiting support plate 230 , and the positioning shaft 240 and the limiting support plate 230 are vertically arranged.

[0106] By cooperating with the above-mentioned horizontal support frame 210, the limiting support plate 230, the positioning shaft 240 and the two first limiting support members 220, when the curved tube 21 needs to be positioned, the curved tube 21 can be positioned along the axial direction of the curved tube 21 only by cooperating with the horizontal support frame 210 and the two first limiting support members 220. The circumferential direction of the curved tube 21 can be adjusted by cooperating with the limiting support plate 230 and the positioning shaft 240, ensuring that the position of the bracket structure 22 is accurately assembled along the circumferential direction of the curved tube 21.

[0107] In order to facilitate understanding of the first positioning assembly 200 in this embodiment, the operation flow of the first positioning assembly 200 is given below:

[0108] Place the curved tube 21 on the horizontal support frame 210 of the first positioning assembly 200, and make the end of the curved tube 21 along the axial direction thereof abut against the first limiting support member 220 of the first positioning assembly 200;

[0109] Pass the positioning shaft 240 through the two end connection holes 211 on the curved tube 21;

[0110] The curved tube 21 is adjusted by rotating the curved tube 21 axially until the positioning shaft 240 is perpendicular to the limiting support plate 230 on the horizontal support frame 210 , and then the positioning shaft 240 and the limiting support plate 230 are fixed.

[0111] Specifically, a positioning hole 2301 is provided on the limiting support plate 230. In the process of adjusting the circumferential direction of the curved tube 21 by cooperating with the limiting support plate 230 and the positioning shaft 240, when the positioning shaft 240 is adjusted to be perpendicular to the limiting support plate 230, the positioning shaft 240 only needs to be inserted into the positioning hole 2301 on the limiting support plate 230 to fix the positioning shaft 240 and the limiting support plate 230.

[0112] It should be noted that along the circumferential direction of the curved tube 21, the position of the end connection hole 211 is different from the position of the bracket structure 22. Therefore, in the above steps, the curved tube 21 can be rotated around its own axis to a suitable angle with the help of the relative position of the end connection hole 211 and the bracket structure 22, so that the bracket structure 22 can be further positioned in the subsequent step S103.

[0113] In one embodiment, reference Fig.11 and Fig.12 As shown in , the second positioning assembly 300 includes:

[0114] A bracket support member 310, the bracket support member 310 is disposed on the base 100, and is used to support the bracket structure 22 along the height direction of the bracket support member 310;

[0115] Two first bracket limiting support plates 320 are arranged on the bracket support member 310 at intervals along the axial direction of the curved tube 21, and are used to abut against the two side ends of the bracket structure 22 along the axial direction of the curved tube 21 to position the bracket structure 22 along the axial direction of the curved tube 21;

[0116] The second bracket limiting support plate 330 is disposed on the bracket support member 310 and is perpendicular to the first bracket limiting support plate 320. The second bracket limiting support plate 330 is used to position the bracket structure 22 along the width direction of the bracket structure 22;

[0117] The width direction of the bracket structure 22 , the axial direction of the curved tube 21 , and the height direction of the bracket support member 310 are perpendicular to each other.

[0118] It should be noted that the axial direction of the curved tube 21 is as shown in FIG. Figure 1 In the direction indicated by the arrows ab, the height direction of the bracket support member 310 is shown in FIG. Figure 1 and Figure 2 In the direction indicated by the arrow cd, the width direction of the bracket structure 22 is shown in FIG. Figure 8 and Fig.11 The direction indicated by the arrow ef.

[0119] By cooperating with the above-mentioned bracket support member 310, the second bracket limiting support plate 330 and the two first bracket limiting support plates 320, when the bracket structure 22 needs to be positioned, it is only necessary to use the two first bracket limiting support plates 320 to position the bracket structure 22 along the axial direction of the curved tube 21, and use the bracket support member 310 to position the bracket structure 22 along the height direction of the bracket support member 310, and use the second bracket limiting support plate 330 to position the bracket structure 22 along the width direction of the bracket structure 22, thereby ensuring accurate positioning between the bracket structure 22 and the curved tube 21.

[0120] In order to facilitate understanding of the second positioning assembly 300 in this embodiment, the operation flow of the second positioning assembly 300 is given below:

[0121] Align the bracket structure 22 with the accommodation space between the two first bracket limiting support plates 320 of the second positioning assembly 300, and make the notch of the bracket structure 22 face the curved tube 21;

[0122] The bracket structure 22 is moved toward the bracket support 310 of the second positioning assembly 300 until the bottom of the bracket structure 22 abuts against the bracket support 310 .

[0123] It should be noted that multiple bracket structures 22 need to be assembled on each curved tube 21, and the multiple bracket structures 22 are evenly spaced along the axial direction of the curved tube 21. The second positioning assembly 300 is provided in plurality on the base 100, so that the multiple bracket structures 22 on the curved tube 21 can be positioned simultaneously to ensure work efficiency. The above steps can ensure that the positioning error between the two bracket structures 22 along the axial direction of the curved tube 21 is kept within 0.5 mm, and the assembly error between the bracket structure 22 and the end connection hole 211 is kept within 0.5 mm.

[0124] It should be noted that in step S1032, after the bottom of the bracket structure 22 is attached to the bracket support member 310, the end of the bracket structure 22 on the slot side is attached to the curved tube 21 along the width direction of the bracket structure 22. At this time, there is a gap between the end of the bracket structure 22 on the side away from the slot and the second bracket limit support plate 330. The size of the gap can be measured to ensure accurate positioning along the width direction of the bracket structure 22. It should be explained that the gap between the end of the bracket structure 22 on the side away from the slot and the second bracket limit support plate 330 is generally set to just be able to insert the bracket structure 22 into the accommodating space formed by the bracket support member 310, the second bracket limit support plate 330 and the two first bracket limit support plates 320.

[0125] In order to facilitate understanding of the welding mechanism 400 in this embodiment, the operation flow of the welding mechanism 400 is given below:

[0126] The base 100, the first positioning assembly 200, the second positioning assembly 300, the curved tube 21 and the bracket structure 22 are hoisted as a whole to the welding station;

[0127] The curved tube 21 and the bracket structure 22 are scanned by the second scanning module of the welding mechanism 400 to obtain third scanning model data;

[0128] Determine the welding arc starting point position and welding arc extinction point position of the bracket structure 22 on the curved tube 21 according to the third scanning model data;

[0129] According to the welding start command, the bracket structure 22 is welded to the curved tube 21 according to the welding arc starting point position and the welding arc extinction point position.

[0130] It should also be noted that the first scanning module and the second scanning module in this embodiment may be instruments with infrared ray scanning function, and the specific structure of such instruments belongs to the existing technical means and will not be elaborated here.

[0131] This example embodiment also provides a method for manufacturing a curved multi-joint beam, referring to Fig.13 As shown in , the method may include the following steps:

[0132] Step S101: transporting, calibrating and processing the curved tube 21 through a CNC machining center;

[0133] Step S102: using the first positioning assembly 200 of the tire frame mechanism to position the curved tube 21;

[0134] Step S103: using the second positioning assembly 300 of the tire frame mechanism to position the plurality of bracket structures 22 relative to the curved tube 21;

[0135] Step S104 : The welding mechanism 400 determines the positions of the welding points of the bracket structure 22 on the curved tube 21 , and welds the bracket structure 22 to the curved tube 21 according to the positions of the welding points.

[0136] In the embodiment of the present disclosure, the curved tube 21 is subjected to fine machining pretreatment by a numerical control machining center, the curved tube 21 is positioned by the first positioning assembly 200 of the tire frame mechanism, and the plurality of bracket structures 22 are positioned relative to the curved tube 21 by the second positioning assembly 300, so as to ensure accurate control of the relative positions of the curved tube 21 and the plurality of bracket structures 22 of the crossbeam, and the welding point positions of the bracket structure 22 on the curved tube 21 are determined by the welding mechanism 400, and the bracket structure 22 is welded to the curved tube 21 according to the welding point positions, so as to ensure that the plurality of bracket structures 22 are accurately welded to the curved tube 21. The method for manufacturing the curved multi-joint crossbeam of the present embodiment can realize the assembly line processing of the crossbeam of the steel guardrail to ensure the processing efficiency, and can also realize the control of the processing accuracy of the crossbeam from multiple aspects such as the processing accuracy of the curved tube 21, the relative position of the curved tube 21 and the bracket structure 22, and the welding accuracy, so as to meet the precise control requirements of the manufacturing connection accuracy of the complex curved multi-joint crossbeam.

[0137] Below, each step of the above method in this example implementation will be described in more detail.

[0138] In one embodiment, the transportation, position calibration and processing of the curved tube 21 by a CNC machining center in step S101 may also include the following steps:

[0139] Step S1011: transporting the curved tube 21 to a processing station through a transport mechanism of a CNC machining center;

[0140] Step S1012: Scan the curved tube 21 by a first scanning module of a numerical control machining center to obtain first scanning model data;

[0141] Step S1013: adjusting the position of the curved tube 21 by using a robot arm of a numerical control machining center according to the first scanning model data and the three-dimensional modeling data of the curved tube 21, so as to calibrate the position of the curved tube 21;

[0142] Step S1014: After the position calibration of the curved tube 21 is completed, the curved tube 21 is cut by a cutting unit of a CNC machining center;

[0143] Step S1015: After the cutting process is completed, the curved tube 21 is scanned again by the first scanning module to obtain second scanning model data;

[0144] Step S1016: Based on the second scanning model data and the three-dimensional modeling data of the curved tube 21 , a hole machining unit of a CNC machining center is used to perform special-shaped hole machining on the curved tube 21 , and a baseline marking unit of the CNC machining center is used to mark a baseline on the curved tube 21 .

[0145] Through the above steps S1011 to S1016, the position of the curved tube 21 located at the processing station can be adjusted, which is conducive to controlling and improving the accuracy of cutting the curved tube 21. In addition, the automatic cutting and drilling operations of the curved tube 21 are also realized. Compared with the traditional cutting process, the various processes of cutting are simplified, so that the curved tube 21 can complete the cutting, cutting and drilling processes on a CNC machining center, greatly improving production efficiency.

[0146] It should be noted that the steel guardrail mentioned in the background art comprises a column 1 and a curved multi-joint crossbeam 2 assembled on the column 1. This embodiment proposes a method for processing and manufacturing a curved multi-joint crossbeam.

[0147] Specifically, in step S1013, when the position of the curved tube 21 is adjusted using the robotic arm of the CNC machining center according to the first scanning model data and the three-dimensional modeling data of the curved tube 21, the position of the curved tube 21 is corrected mainly by comparing the first scanning model data with the three-dimensional modeling data of the curved tube 21.

[0148] Specifically, in step S1014, the cutting processing unit of the CNC machining center can be a laser cutting instrument integrated on a robotic arm that can emit a high-power density laser beam. Under the irradiation of the high-power density laser beam, the curved tube 21 is quickly heated to the vaporization temperature and evaporates to form holes. As the robotic arm moves, the light beam moves relative to the curved tube 21, and the holes continuously form a very narrow slit, thereby completing the cutting of the curved tube 21.

[0149] Specifically, in step S1016, according to the second scanning model data and the three-dimensional modeling data of the curved tube 21, it can be understood as the result of comparing the first scanning model data with the three-dimensional modeling data of the curved tube 21. The hole processing unit of the CNC machining center can be a processing instrument integrated on the robot arm that can emit a high-power density laser beam. As the robot arm moves, the beam moves relative to the curved tube 21, and the sheet steel body can be cut off on the curved tube 21, thereby processing a special-shaped hole. The reference line marking unit of the CNC machining center can be a processing instrument integrated on the robot arm that can spray paint. As the robot arm moves, it can draw lines on the curved tube 21 to achieve the setting of reference lines on the curved tube 21.

[0150] It should be noted that the three-dimensional modeling data of the curved tube 21 is used to establish an accurate three-dimensional model of the curved tube 21 using three-dimensional software when designing the structure of the curved tube 21. The three-dimensional modeling data of the curved tube 21 can be imported into the CNC machining center in advance so that it can be used when needed.

[0151] It should also be noted that the processing procedures of each module of the CNC machining center can be controlled by a controller, which is conducive to ensuring operating efficiency and machining accuracy.

[0152] In one embodiment, reference Figures 8 to 10 As shown in FIG. , the first positioning assembly 200 includes:

[0153] A horizontal support frame 210, which is disposed on the base 100 and is used to support the outer surface of the curved tube 21;

[0154] Two first position-limiting support members 220 are arranged on the base 100 at intervals, and the horizontal support frame 210 is located between the two first position-limiting support members 220. The first position-limiting support member 220 is used to abut against the end of the curved tube 21 along its axial direction to position the curved tube 21 along the axial direction of the curved tube 21;

[0155] The limiting support plate 230 is connected to the horizontal support frame 210, and the limiting support plate 230 is arranged at an angle with the height direction of the horizontal support frame 210;

[0156] The positioning shaft 240 is detachably connected to the limiting support plate 230 , and the positioning shaft 240 and the limiting support plate 230 are vertically arranged.

[0157] For example, the curved tube 21 has two end connection holes 211 arranged opposite to each other in the radial direction thereof. Positioning the curved tube 21 by using the first positioning assembly 200 of the tire frame mechanism in step S102 may further include the following steps:

[0158] Step S1021: placing the curved tube 21 on the horizontal support frame 210 of the first positioning assembly 200, and making the end of the curved tube 21 along the axial direction thereof abut against the first limiting support member 220 of the first positioning assembly 200;

[0159] Step S1022: Pass the positioning shaft 240 through the two end connection holes 211 on the curved tube 21;

[0160] Step S1023 : The curved tube 21 is adjusted by rotating the curved tube 21 around its axial direction until the positioning shaft 240 is perpendicular to the limiting support plate 230 on the horizontal support frame 210 , and then the positioning shaft 240 and the limiting support plate 230 are fixed.

[0161] Through the above steps S1021 to S1023, the curved tube 21 can be precisely positioned, wherein the positioning error along the axial direction of the curved tube 21 can be controlled within 0.5 mm, which is conducive to ensuring the refined control of subsequent processes. When the curved tube 21 needs to be positioned, the curved tube 21 can be positioned along the axial direction of the curved tube 21 only by cooperating with the horizontal support frame 210 and the two first limit support members 220, and the circumferential direction of the curved tube 21 can be adjusted by cooperating with the limit support plate 230 and the positioning shaft 240, ensuring that the position of the bracket structure 22 is accurately assembled along the circumferential direction of the curved tube 21.

[0162] It should be noted that along the circumferential direction of the curved tube 21, the position of the end connection hole 211 is different from the position of the bracket structure 22. Therefore, in the above steps S1022 to S1023, the curved tube 21 can be rotated around its own axis to a suitable angle with the help of the relative position of the end connection hole 211 and the bracket structure 22, so that the bracket structure 22 can be further positioned in the subsequent step S103.

[0163] In one embodiment, reference Fig.11 and Fig.12 As shown in , the second positioning assembly 300 includes:

[0164] A bracket support member 310, the bracket support member 310 is disposed on the base 100, and is used to support the bracket structure 22 along the height direction of the bracket support member 310;

[0165] Two first bracket limiting support plates 320 are arranged on the bracket support member 310 at intervals along the axial direction of the curved tube 21, and are used to abut against the two side ends of the bracket structure 22 along the axial direction of the curved tube 21 to position the bracket structure 22 along the axial direction of the curved tube 21;

[0166] The second bracket limiting support plate 330 is disposed on the bracket support member 310 and is perpendicular to the first bracket limiting support plate 320. The second bracket limiting support plate 330 is used to position the bracket structure 22 along the width direction of the bracket structure 22;

[0167] The width direction of the bracket structure 22 , the axial direction of the curved tube 21 , and the height direction of the bracket support member 310 are perpendicular to each other.

[0168] For example, the bracket structure 22 is a C-shaped bracket structure 22, and the second positioning assembly 300 of the tire frame mechanism in step S103 positions the plurality of bracket structures 22 relative to the curved tube 21, and the following steps may also be included:

[0169] Step S1031: align the bracket structure 22 with the accommodation space between the two first bracket limiting support plates 320 of the second positioning assembly 300, and make the notch of the bracket structure 22 face the curved tube 21;

[0170] Step S1032 : moving the bracket structure 22 toward the bracket support 310 of the second positioning assembly 300 until the bottom of the bracket structure 22 is in contact with the bracket support 310 .

[0171] Through the above steps S1031 to S1032, the bracket structure 22 can be positioned to ensure the refined control of the subsequent processes. When the bracket structure 22 needs to be positioned, it is only necessary to position the bracket structure 22 along the axial direction of the curved tube 21 through the two first bracket limit support plates 320, position the bracket structure 22 along the height direction of the bracket support member 310 through the bracket support member 310, and position the bracket structure 22 along the width direction of the bracket structure 22 through the second bracket limit support plate 330, so as to ensure the accurate positioning between the bracket structure 22 and the curved tube 21.

[0172] It should be noted that in step S1032, after the bottom of the bracket structure 22 is attached to the bracket support member 310, the end of the bracket structure 22 on the slot side is attached to the curved tube 21 along the width direction of the bracket structure 22. At this time, there is a gap between the end of the bracket structure 22 on the side away from the slot and the second bracket limit support plate 330. The size of the gap can be measured to ensure accurate positioning along the width direction of the bracket structure 22. It should be explained that the gap between the end of the bracket structure 22 on the side away from the slot and the second bracket limit support plate 330 is generally set to just fit the bracket structure 22 into the positioning space formed by the bracket support member 310, the second bracket limit support plate 330 and the two first bracket limit support plates 320.

[0173] It should also be noted that multiple bracket structures 22 need to be assembled on each curved tube 21, and the multiple bracket structures 22 are evenly spaced along the axial direction of the curved tube 21. The second positioning assembly 300 is provided in plurality on the base 100, so that the multiple bracket structures 22 on the curved tube 21 can be positioned simultaneously to ensure work efficiency. The above steps S1031 to S1032 can ensure that the positioning error between the two bracket structures 22 along the axial direction of the curved tube 21 is kept within 0.5 mm, and the assembly error between the bracket structure 22 and the end connection hole 211 is kept within 0.5 mm.

[0174] Before performing step S104, the position of the bracket structure 22 needs to be checked. After checking, the bracket structure 22 can be tack welded by CO2 gas shielded welding, which is convenient for the subsequent lifting and moving of the curved tube 21 and the bracket structure 22. After the bracket structure 22 is tack welded by CO2 gas shielded welding, the position of the bracket structure 22 can be checked again to ensure the assembly accuracy of the bracket after tack welding.

[0175] In one embodiment, the tire frame mechanism further includes a base 100 , and the first positioning assembly 200 and the second positioning member are disposed on the base 100 .

[0176] Example, reference Figure 3 As shown in FIG. 1 , the step S104 determines the welding point positions of the bracket structure 22 on the curved tube 21 by the welding mechanism 400, and welds the bracket structure 22 to the curved tube 21 according to the welding point positions, and may further include the following steps:

[0177] Step S1041: hoisting the base 100, the first positioning assembly 200, the second positioning assembly 300, the curved tube 21 and the bracket structure 22 as a whole to a welding station;

[0178] Step S1042: Scan the curved tube 21 and the bracket structure 22 by the second scanning module of the welding mechanism 400 to obtain third scanning model data;

[0179] Step S1043: determining the welding arc starting point position and the welding arc extinction point position of the bracket structure 22 on the curved tube 21 according to the third scanning model data;

[0180] Step S1044: according to the welding start command, the bracket structure 22 is welded to the curved tube 21 according to the welding arc starting point position and the welding arc extinction point position.

[0181] Through the above steps S1041 to S1044, automated welding can be achieved, which not only saves human resources, but also controls the quality of welding. Compared with traditional manual welding, the problem of unstable manual welding quality is solved, the weld formation is stable and controllable, and the welding quality is excellent. In terms of welding efficiency, the assembly welding by four people is changed to two people controlling welding, and multiple welding mechanisms 400 can be operated at the same time for welding, which significantly improves welding efficiency; in terms of welding quality, the effect of full weld feet and beautiful formation is achieved.

[0182] Regarding the system in the above embodiment, the specific manner in which each unit performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0183] It should be noted that although several units of the system for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the present disclosure, the features and functions of two or more units described above can be concretized in one unit. Conversely, the features and functions of a unit described above can be further divided into multiple units for concretization. Some or all of the units can be selected according to actual needs to achieve the purpose of the disclosed solution. Those of ordinary skill in the art can understand and implement it without paying creative work.

[0184] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A device for manufacturing a curved multi-joint beam, characterized in that: include: A CNC machining center comprises a transport mechanism, a position adjustment mechanism and a machining mechanism, wherein the transport mechanism is used to transport a curved surface tube to a machining station, the position adjustment mechanism is used to calibrate the position of the curved surface tube at the machining station, and the machining mechanism is used to process the calibrated curved surface tube; The tire frame mechanism comprises a base and a first positioning assembly and a second positioning assembly arranged on the base, wherein the first positioning assembly is used to position the curved tube, and the second positioning assembly is used to position a plurality of bracket structures relative to the curved tube; The welding mechanism comprises a welding point confirmation module and a welding module, wherein the welding point confirmation module is used to determine the welding point positions of the bracket structure on the curved tube, and the welding module is used to weld the bracket structure to the curved tube according to the welding point positions.

2. The curved multi-joint beam manufacturing device according to claim 1, characterized in that: The position adjustment mechanism comprises: A first scanning module, the first scanning module is used to scan the curved tube to obtain first scanning model data; A robotic arm is used to adjust the position of the curved tube according to the first scanning model data and the three-dimensional modeling data of the curved tube.

3. The curved multi-joint beam manufacturing device according to claim 1, characterized in that: The processing mechanism comprises: A cutting unit, wherein the cutting unit is used to cut the curved tube along the axial direction of the curved tube; A hole processing unit, the hole processing unit is used to process special-shaped holes on the curved tube; A reference line setting unit is used to set a reference line on the curved tube.

4. The device for manufacturing a curved multi-joint beam according to claim 1, characterized in that: The first positioning component comprises: A horizontal support frame, the horizontal support frame is arranged on the base and is used to support the outer surface of the curved tube; Two first position-limiting support members are arranged on the base at intervals, the horizontal support frame is located between the two first position-limiting support members, and the first position-limiting support member is used to abut against the end of the curved tube along the axial direction thereof to position the curved tube along the axial direction of the curved tube; A limit support plate connected to the horizontal support frame, and the limit support plate is arranged at an angle with respect to the height direction of the horizontal support frame; A positioning shaft is detachably connected to the limiting support plate, and the positioning shaft and the limiting support plate are vertically arranged.

5. The device for manufacturing a curved multi-joint beam according to claim 4, characterized in that: The second positioning component comprises: A bracket support, the bracket support is arranged on the base and is used to support the bracket structure along the height direction of the bracket support; Two first bracket limiting support plates are arranged on the bracket support member at intervals along the axial direction of the curved tube, and are used to abut against the two side ends of the bracket structure along the axial direction of the curved tube to position the bracket structure along the axial direction of the curved tube; A second bracket limiting support plate is arranged on the bracket support member and is perpendicular to the first bracket limiting support plate, and the second bracket limiting support plate is used to position the bracket structure along the width direction of the bracket structure; Among them, the width direction of the bracket structure, the axial direction of the curved tube and the height direction of the bracket support are perpendicular to each other.

6. A method for manufacturing a curved multi-joint beam, characterized in that: The method applied to the device for manufacturing a curved multi-joint beam according to any one of claims 1 to 5 comprises: The curved tube is transported, positioned and processed by the CNC machining center; Positioning the curved tube using a first positioning assembly of a tire frame mechanism; Using a second positioning assembly of the tire frame mechanism to position the plurality of bracket structures relative to the curved tube; The welding point positions of the bracket structure on the curved tube are determined by a welding mechanism, and the bracket structure is welded to the curved tube according to the welding point positions.

7. The method for manufacturing a curved multi-joint beam according to claim 6, characterized in that: The method of transporting, calibrating and processing the curved tube by a CNC machining center includes: The curved tube is transported to a processing station by a transport mechanism of the CNC machining center; Scanning the curved tube by a first scanning module of the CNC machining center to obtain first scanning model data; According to the first scanning model data and the three-dimensional modeling data of the curved tube, using the robot arm of the CNC machining center to adjust the position of the curved tube; Cutting the curved tube by a cutting unit of the CNC machining center; Scanning the curved tube again by the first scanning module to obtain second scanning model data; According to the second scanning model data and the three-dimensional modeling data of the curved tube, the hole processing unit of the CNC machining center is used to process special-shaped holes on the curved tube, and the baseline marking unit of the CNC machining center is used to mark a baseline on the curved tube.

8. The method for manufacturing a curved multi-joint beam according to claim 6, characterized in that: The curved tube has two end connection holes arranged opposite to each other in the radial direction thereof, and the first positioning assembly of the tire frame mechanism is used to position the curved tube, including: Placing the curved tube on the horizontal support frame of the first positioning assembly, and making the end of the curved tube along the axial direction thereof abut against the first limiting support member of the first positioning assembly; Pass the positioning shaft through the two end connection holes on the curved tube; The curved tube is adjusted by rotating around the axial direction of the curved tube until the positioning shaft is perpendicular to the limiting support plate on the horizontal support frame, and then the positioning shaft is fixed to the limiting support plate.

9. The method for manufacturing a curved multi-joint beam according to claim 8, characterized in that: The method of using the second positioning assembly of the tire frame mechanism to position the plurality of bracket structures relative to the curved tube includes: Align the bracket structure with the accommodation space between the two first bracket limiting support plates of the second positioning assembly, and make the notch of the bracket structure face the curved tube; The bracket structure is moved toward the bracket support of the second positioning assembly until the bottom of the bracket structure is in contact with the bracket support.

10. The method for manufacturing a curved multi-joint beam according to claim 6, characterized in that: The method of determining the welding point positions of the bracket structure on the curved tube by a welding mechanism and welding the bracket structure to the curved tube according to the welding point positions comprises: Hoisting the first positioning assembly, the second positioning assembly, the curved tube and the bracket structure to a welding station; Scanning the curved tube and the bracket structure by a second scanning module of the welding mechanism to obtain third scanning model data; Determine the welding arc starting point position and the welding arc extinction point position of the bracket structure on the curved tube according to the third scanning model data; According to the welding start command, the bracket structure is welded to the curved pipe according to the welding arc starting point position and the welding arc extinction point position.

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