CN117754135A - Hub welding device, production line and method - Google Patents
Hub welding device, production line and method Download PDFInfo
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- CN117754135A CN117754135A CN202311784786.6A CN202311784786A CN117754135A CN 117754135 A CN117754135 A CN 117754135A CN 202311784786 A CN202311784786 A CN 202311784786A CN 117754135 A CN117754135 A CN 117754135A
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- 238000003466 welding Methods 0.000 title claims abstract description 178
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000000007 visual effect Effects 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
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- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The invention provides a hub welding device, a production line and a method, which belong to the technical field of welding equipment, wherein the hub welding device comprises a frame, the frame is provided with a hub fixing tool and a welding head assembly, the welding head assembly comprises a three-dimensional movable slipway, a welding laser head is arranged at the power output end of the three-dimensional movable slipway, a visual tracker lens is arranged at the upper part of the welding laser head, and the visual tracker lens is in communication connection with a controller of the three-dimensional movable slipway; the rack is also provided with a non-contact ranging sensor, the measuring point of the non-contact ranging sensor is positioned in the welding seam of the workpiece to be welded, and the non-contact ranging sensor is in communication connection with the controller of the three-dimensional moving sliding table. The wheel hub welding device has the beneficial effects that the welding device can accurately detect the position of the welding line and accurately guide the welding head to move to the middle position of the welding line, thereby solving the problem of inaccurate welding line detection of the existing wheel hub welding device and improving the welding quality of the wheel hub.
Description
Technical Field
The invention belongs to the technical field of welding equipment, and particularly relates to a hub welding device, a production line and a method.
Background
The hub generally comprises two parts, namely a rim and a spoke, and in the production process of the hub, the rim and the spoke are generally produced separately, and then the rim and the spoke are connected together by adopting a welding mode after the production of the rim and the spoke is completed. Specifically, the welding process mainly comprises the following steps: firstly, placing a spoke in a rim, enabling the outer side wall of the rim to be in contact with the inner wall of the spoke, then fixing the rim and the spoke on a rotating seat at the bottom of a welding machine, and enabling a welding head pair Ji Lunwang to be in contact with the spoke; and finally, driving the rotating seat to rotate around the axis of the rim, and controlling the welding head to finish the welding of the rim and the spoke in the rotating process.
However, because the rim and the spoke are produced separately by adopting different processes, namely, the excircle of the spoke is processed by adopting turning, the rim is produced by adopting steel plate rolling, butt welding, rolling and die stamping processes, and the roundness and the coaxiality of the circular weld joint of the spoke and the rim are easy to deviate to a certain extent, so that the difficulty degree of hub welding is improved to a certain extent.
To overcome the above problems, the existing hub welding device generally has a welding head with a movable structure to adapt to the change of the welding seam position. However, in the actual use process, it is found that, because the weld seam detection structure used for matching with the welding head on the existing hub welding device is a contact detection structure, part of the weld seam generated during rim molding and the outer circular surface of the rim do not present a cylindrical state, but a conical cylindrical surface, a contact line with an uncertain height is presented between the cylindrical roller and the conical cylindrical surface in the contact detection structure, so that the problem of inaccurate weld seam detection result is easy to cause, and the internal welding position is affected; meanwhile, the welding seam detection structure is easy to wear, so that the subsequent maintenance times and the workload are increased; and the problem of welt welding is easy to occur at the positions with different gap distances, thereby seriously affecting the molding.
Disclosure of Invention
The invention solves the technical problem of providing the hub welding device, the production line and the method which can accurately detect the position of the welding line and accurately guide the welding head to move to the middle position of the welding line, so as to solve the problem of inaccurate welding line detection of the existing hub welding device and further improve the welding quality of the hub.
In order to solve the technical problems, in one aspect, the invention provides a hub welding device, which comprises a frame, wherein the frame is provided with a hub fixing tool and a welding head assembly, the welding head assembly comprises a three-dimensional movable slipway, a welding laser head is arranged at the power output end of the three-dimensional movable slipway, a visual tracker lens is arranged at the upper part of the welding laser head, and the visual tracker lens is in communication connection with a controller of the three-dimensional movable slipway; the rack is also provided with a non-contact ranging sensor, the measuring point of the non-contact ranging sensor is positioned in the welding seam of the workpiece to be welded, and the non-contact ranging sensor is in communication connection with the controller of the three-dimensional moving sliding table. When the hub welding device provided by the invention is used for welding the rim and the spoke, the position of a gap (namely a welding seam) between the rim and the spoke can be captured through the vision tracker lens, and the welding laser head can be accurately moved to the middle position of the rim and the spoke for middle separation treatment according to the capturing result, or the welding laser head can be positioned according to the percentage of the gap spacing, so that the positioning treatment can be carried out on the welding laser head, and the accuracy of the position of a laser beam output by the welding laser head can be ensured; and then controlling the workpiece to rotate and weld along with the hub fixing tool, and simultaneously monitoring the offset of the welding line in real time through a non-contact ranging sensor in the process, and controlling the three-dimensional moving sliding table to move in real time according to the monitored offset so as to ensure that the welding laser head always welds in the middle area of the welding line.
Further, the three-dimensional moving sliding table comprises a front-back movement module arranged on the frame, a left-right movement module is arranged at the power output end of the front-back movement module, an up-down movement module is arranged at the power output end of the left-right movement module, and a welding laser head is arranged at the power output end of the up-down movement module.
Further, the hub fixing tool comprises an integral lifting frame, the integral lifting frame is vertically and slidably arranged on the frame, a hub fixing chuck is arranged on the upper portion of the integral lifting frame, a speed reducer is connected with a power input end of the hub fixing chuck in a transmission manner, and a rotating motor is connected with an input end of the speed reducer in a transmission manner. At this time, the invention can control the hub fixed chuck to rotate at a corresponding rotating speed under the cooperation of the rotating motor and the speed reducer.
Further, the lifting driving mechanism is connected with the integral lifting frame in a driving way, and the lifting driving mechanism preferably adopts a ball screw structure.
Further, the lifting driving mechanism comprises a screw rod rotatably installed on the frame, the end part of the screw rod is in transmission connection with a lifting motor, the middle part of the screw rod is in threaded connection with a screw rod nut, and the screw rod nut is connected with the integral lifting frame, so that the integral lifting frame can perform lifting action up and down along with the rotation of the screw rod, and the heights of the rim and the spoke are adjusted.
Further, the diameter of the laser beam output by the welding laser head is 0.6mm, and the laser beam is larger than a gap with the width of 0.1-0.3mm formed after the assembly of the rim and the spoke in the common hub, so that the welding forming effect of the welding laser head is ensured.
Further, the non-contact ranging sensor is a laser ranging sensor.
On the other hand, the invention provides a hub welding production line, which comprises a feeding main line, a welding station I and a discharging main line which are sequentially arranged, wherein the output end of the feeding main line is provided with a turning station I, and the input end of the discharging main line is provided with a turning station II; one side of the welding station I is provided with a welding station II, both the welding station I and the welding station II are provided with the hub welding device, both sides of the welding station II are respectively provided with a steering station III and a steering station IV, a passing turnover station I is arranged between the steering station III and the steering station I, and a passing turnover station II is arranged between the steering station IV and the steering station II.
In addition, the invention also provides a hub welding method, which comprises the following steps:
s1, fixing a rim and a spoke at a hub fixing chuck of a hub fixing tool;
s2, firstly controlling a visual tracker lens to acquire and process images of weld joint positions between the rim and the spoke, and obtaining weld joint position information; then controlling the welding laser head to move to the target position according to the weld position information;
s3, controlling the spoke and the rim to rotate along with the hub fixing tool, monitoring the offset of a welding line in real time by a non-contact ranging sensor in the process, and welding the spoke and the rim by a welding laser head according to the monitored offset in real time.
Further, S2 includes the following steps:
s21, acquiring the boundary position of the welding line according to the position information of the image acquisition pixel point obtained by the vision tracker lens;
s22, selecting two points of a weld joint boundary, firstly calculating the position coordinates of a target welding focus between the two selected points, and then calculating the position difference between the target welding focus and an actual welding focus;
s23, controlling the welding laser head to periodically move towards the target welding focus position, shooting the vision tracker lens once every 0.5S in the process, and adjusting the moving speed of the three-dimensional moving sliding table in real time according to the shooting result of the vision tracker lens; until the distance value between the actual welding focus and the target welding focus of the welding laser head meets the welding requirement.
From the above technical scheme, the invention has the following advantages: 1. when the hub welding device, the production line and the method provided by the invention are used for welding the rim and the spoke, the position of a gap (namely a welding seam) between the rim and the spoke can be captured through the vision tracker lens, and the welding laser head can be accurately moved to the middle position of the rim and the spoke for centering treatment according to the capturing result, or the welding laser head can be positioned according to the percentage of the gap spacing, so that the accuracy of the position of a laser beam output by the welding laser head is ensured, and the welding quality is further improved; 2. as the invention adopts a non-contact point laser ranging mode, and the measuring point is positioned in the welding line; the invention has higher tracking precision and is not easy to wear.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: 1. a visual tracker lens; 2. welding a laser head; 3. a hub; 4. a hub fixing chuck; 5. a speed reducer; 6. a rotating electric machine; 7. an integral lifting frame; 8. a lead screw nut; 9. a screw rod; 10. a lifting motor; 11. a non-contact ranging sensor; 12. a back and forth movement module; 13. a left-right movement module; 14. a vertical movement module; 15. a feed main line; 16. turning to a first station; 17. a first welding station; 18. a second turning station; 19. a discharge main line; 20. passing through a second overturning station; 21. turning to a station IV; 22. a welding station II; 23. turning to a third station; 24. and (5) passing through a first overturning station.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, a first embodiment provides a hub welding device, which includes a frame, wherein the frame is provided with a hub fixing tool and a welding head assembly. The hub fixing tool comprises an integral lifting frame 7, wherein the integral lifting frame 7 is vertically and slidably arranged on a frame, one side of the integral lifting frame 7 is in driving connection with a lifting driving mechanism, and the lifting driving mechanism preferably adopts a ball screw structure. Specifically, the lifting driving mechanism comprises a screw rod 9 rotatably installed on the frame, the end part of the screw rod 9 is in transmission connection with a lifting motor 10, the middle part of the screw rod 9 is in threaded connection with a screw rod nut 8, and the screw rod nut 8 is connected with the integral lifting frame 7. The upper portion of whole lifting frame 7 installs wheel hub fixed chuck 4, the power input end transmission of wheel hub fixed chuck 4 is connected with speed reducer 5, the input transmission of speed reducer 5 is connected with rotating electrical machines 6. At this time, the invention can control the hub fixed chuck 4 to rotate at a corresponding rotation speed under the cooperation of the rotating motor 6 and the speed reducer 5, and the integral lifting frame 7 can lift up and down along with the rotation of the screw rod 9 so as to adjust the heights of the rim and the spoke.
The welding head assembly comprises a welding laser head 2 and a three-dimensional moving sliding table. The three-dimensional moving sliding table comprises a front-back moving module 12 arranged on a frame, a left-right moving module 13 is arranged at the power output end of the front-back moving module 12, an up-down moving module 14 is arranged at the power output end of the left-right moving module 13, a welding laser head 2 is arranged at the power output end of the up-down moving module 14, the diameter of a laser beam output by the welding laser head 2 is 0.6mm, a visual tracker lens 1 is arranged on the upper portion of the welding laser head 2, and the visual tracker lens 1 is in communication connection with a controller of the three-dimensional moving sliding table.
In addition, the stand is further provided with a non-contact ranging sensor 11, the non-contact ranging sensor 11 is preferably a laser ranging sensor, and a measuring point of the non-contact ranging sensor 11 is located in a welding line of a workpiece to be welded and is also in communication connection with a controller of the three-dimensional moving sliding table.
When the hub welding device provided by the invention is used for welding the rim and the spoke, the position of a gap (namely a welding seam) between the rim and the spoke can be captured through the vision tracker lens 1, and the welding laser head 2 can be accurately moved to the middle position of the gap according to the capturing result for carrying out the centering treatment, or the welding laser head 2 can be positioned according to the percentage of the gap spacing, so that the positioning treatment of the welding laser head 2 is carried out, and the accuracy of the position of a laser beam output by the welding laser head 2 is ensured; and then controlling the workpiece to rotate and weld along with the hub fixing tool, and simultaneously monitoring the offset of the welding line in real time through the non-contact ranging sensor 11 in the process, and controlling the three-dimensional moving sliding table to move in real time according to the monitored offset so as to ensure that the welding laser head 2 always welds in the middle area of the welding line.
Example two
As shown in fig. 2, the second embodiment provides a hub welding production line, which comprises a feeding main line 15, a first welding station 17 and a discharging main line 19 which are sequentially arranged, wherein the output end of the feeding main line 15 is provided with a first steering station 16, and the input end of the discharging main line 19 is provided with a second steering station 18; one side of the welding station I17 is provided with a welding station II 22, the welding station I17 and the welding station II 22 are both provided with the wheel hub welding device, two sides of the welding station II 22 are respectively provided with a steering station III 23 and a steering station IV 21, a passing turnover station I24 is arranged between the steering station III 23 and the steering station I16, and a passing turnover station II 20 is arranged between the steering station IV 21 and the steering station II 18.
Example III
The third embodiment provides a hub welding method, which adopts the hub welding device described in the first embodiment, and specifically includes the following steps:
s1, fixing a rim and a spoke at a hub fixing chuck 4 of a hub fixing tool;
s2, firstly controlling a visual tracker lens 1 to acquire and process images of weld positions between the rim and the spoke, and obtaining weld position information; then controlling the welding laser head 2 to move to a target position according to the weld position information;
s3, controlling the spoke and the rim to rotate along with the hub fixing tool, and in the process, monitoring the offset of the welding line in real time by the non-contact ranging sensor 11, and welding the spoke and the rim by the welding laser head 2 according to the monitored offset in real time.
And wherein S2 specifically comprises the steps of:
s21, acquiring the boundary position of the welding line according to the position information of the image acquisition pixel point obtained by the visual tracker lens 1;
s22, selecting two points of a weld joint boundary, firstly calculating the position coordinates of a target welding focus between the two selected points, and then calculating the position difference between the target welding focus and an actual welding focus;
s23, controlling the welding laser head to periodically move to the target welding focus position, and preferably setting the welding laser head to move sequentially every 0.3S, wherein in the process, the visual tracker lens 1 shoots every 0.5S, and the moving speed of the three-dimensional moving sliding table is adjusted in real time according to the shooting result of the visual tracker lens 1 every time; until the distance value between the actual welding focus and the target welding focus of the welding laser head 2 meets the welding requirement, i.e. the distance between the two is less than 0.1mm.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hub welding device comprises a frame, wherein the frame is provided with a hub fixing tool and a welding head assembly; the welding head assembly is characterized by comprising a three-dimensional movable slipway, a welding laser head is arranged at the power output end of the three-dimensional movable slipway, a visual tracker lens is arranged at the upper part of the welding laser head, and the visual tracker lens is in communication connection with a controller of the three-dimensional movable slipway; the rack is also provided with a non-contact ranging sensor, the measuring point of the non-contact ranging sensor is positioned in the welding seam of the workpiece to be welded, and the non-contact ranging sensor is in communication connection with the controller of the three-dimensional moving sliding table.
2. The hub welding device according to claim 1, wherein the three-dimensional moving slipway comprises a front-back movement module arranged on the frame, a left-right movement module is arranged at a power output end of the front-back movement module, a up-down movement module is arranged at a power output end of the left-right movement module, and a welding laser head is arranged at a power output end of the up-down movement module.
3. The hub welding device according to claim 1, wherein the hub fixing tool comprises an integral lifting frame, the integral lifting frame is vertically and slidably mounted on the stand, a hub fixing chuck is mounted on the upper portion of the integral lifting frame, a speed reducer is connected to a power input end of the hub fixing chuck in a transmission manner, and a rotating motor is connected to an input end of the speed reducer in a transmission manner.
4. A hub welding apparatus according to claim 3, wherein the integral lifting frame is drivingly connected to a lifting drive mechanism.
5. The hub welding device according to claim 4, wherein the lifting driving mechanism comprises a screw rotatably mounted on the frame, an end portion of the screw is in driving connection with a lifting motor, a middle portion of the screw is in threaded connection with a screw nut, and the screw nut is connected with the integral lifting frame.
6. The hub welding device according to claim 1, wherein the diameter of the laser beam output by the welding laser head is 0.6mm.
7. The hub welding device of claim 1, wherein the non-contact ranging sensor is a laser ranging sensor.
8. The hub welding production line is characterized by comprising a feeding main line, a welding station I and a discharging main line which are sequentially arranged, wherein a steering station I is arranged at the output end of the feeding main line, and a steering station II is arranged at the input end of the discharging main line; one side of the welding station I is provided with a welding station II, the welding station I and the welding station II are both provided with the hub welding device according to any one of claims 1-7, two sides of the welding station II are respectively provided with a steering station III and a steering station IV, a passing turnover station I is arranged between the steering station III and the steering station I, and a passing turnover station II is arranged between the steering station IV and the steering station II.
9. A method of welding a hub, comprising the steps of:
s1, fixing a rim and a spoke at a hub fixing chuck of a hub fixing tool;
s2, firstly controlling a visual tracker lens to acquire and process images of weld joint positions between the rim and the spoke, and obtaining weld joint position information; then controlling the welding laser head to move to the target position according to the weld position information;
s3, controlling the spoke and the rim to rotate along with the hub fixing tool, monitoring the offset of a welding line in real time by a non-contact ranging sensor in the process, and welding the spoke and the rim by a welding laser head according to the monitored offset in real time.
10. The hub welding method according to claim 9, S2 comprising the steps of:
s21, acquiring the boundary position of the welding line according to the position information of the image acquisition pixel point obtained by the vision tracker lens;
s22, selecting two points of a weld joint boundary, firstly calculating the position coordinates of a target welding focus between the two selected points, and then calculating the position difference between the target welding focus and an actual welding focus;
s23, controlling the welding laser head to periodically move towards the target welding focus position, shooting the vision tracker lens once every 0.5S in the process, and adjusting the moving speed of the three-dimensional moving sliding table in real time according to the shooting result of the vision tracker lens; until the distance value between the actual welding focus and the target welding focus of the welding laser head meets the welding requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784786.6A CN117754135A (en) | 2023-12-24 | 2023-12-24 | Hub welding device, production line and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784786.6A CN117754135A (en) | 2023-12-24 | 2023-12-24 | Hub welding device, production line and method |
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| CN117754135A true CN117754135A (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311784786.6A Pending CN117754135A (en) | 2023-12-24 | 2023-12-24 | Hub welding device, production line and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118385836A (en) * | 2024-06-24 | 2024-07-26 | 赛普瑞(天津)科技有限公司 | Welding device for rapidly positioning automobile hub |
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2023
- 2023-12-24 CN CN202311784786.6A patent/CN117754135A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118385836A (en) * | 2024-06-24 | 2024-07-26 | 赛普瑞(天津)科技有限公司 | Welding device for rapidly positioning automobile hub |
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