CN216503985U - Workpiece weld joint detection, milling and grinding equipment - Google Patents
Workpiece weld joint detection, milling and grinding equipment Download PDFInfo
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- CN216503985U CN216503985U CN202122650320.XU CN202122650320U CN216503985U CN 216503985 U CN216503985 U CN 216503985U CN 202122650320 U CN202122650320 U CN 202122650320U CN 216503985 U CN216503985 U CN 216503985U
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Abstract
The utility model provides a workpiece weld joint milling and grinding device, which belongs to the field of milling of large-allowance weld joints and specifically comprises the following steps: a robot hand; the polishing part is connected to the head end of the robot hand body and used for polishing the surface of a workpiece under the driving of the robot hand body so as to control the removal depth of a welding seam, wherein the polishing part comprises a polishing mechanism and a protection mechanism; grinding machanism includes: a frame; the workpiece detection assembly is used for detecting the surface of the workpiece; the milling assembly is used for milling the surface of the workpiece according to the detection result of the workpiece detection assembly; the abrasive belt polishing assembly is used for polishing the surface of the workpiece according to the detection result of the workpiece detection assembly; and the chain rotating assembly is used for driving the abrasive belt grinding assembly in real time according to the detection result of the workpiece detection assembly. Through the processing scheme of this application, mill the mill to great surplus welding seam pertinence becomes more meticulous.
Description
Technical Field
The utility model relates to the field of milling of large-allowance welding seams, in particular to workpiece welding seam milling and grinding equipment.
Background
In large-scale manufacturing industries such as high-speed rails, heavy industry, shipbuilding and the like, a large number of large-scale component welding exists. Although the welding of the large-scale component is gradually automated at present, the welding position and the allowance of the large-scale component after welding have larger deviation due to the machining tolerance, the clamping and positioning error, the welding thermal deformation, the unstable welding process and the like of the large-scale component. At present, general special machine equipment is difficult to be qualified aiming at the type of welding seam, and related welding seams are polished mainly by means of manual work.
The manual polishing has the defects of large polishing workload, severe environment, low efficiency, difficult guarantee of product quality, poor product consistency and the like; even if the air cylinder floating mode is forcibly adopted to mill the welding line, equipment generally needs to be arranged on a component and then the component is milled, grinding parameters are difficult to control (grinding force, grinding disc loss interpolation, grinding disc contact pressure and the like) and the grinding allowance of the large-allowance welding line is inconsistent, so that the grinding quality and the consistency are poor, and finally, a large amount of repair work still needs to be carried out manually.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to overcome the defects of the prior art, the utility model provides workpiece weld joint milling equipment for performing targeted fine milling on a large-allowance weld joint.
In order to achieve the above object, the present invention provides a workpiece weld seam milling and grinding device, comprising: the robot hand is provided with a numerical control base and a robot hand body arranged on the numerical control base, and the tail end of the robot hand body is connected with the numerical control base; the polishing part is connected to the head end of the robot hand body and used for polishing the surface of a workpiece under the driving of the robot hand body so as to control the removal depth of a welding seam, wherein the polishing part comprises a polishing mechanism connected with the head end of the robot hand body and a protection mechanism sleeved outside the polishing mechanism; grinding machanism includes: a frame; the workpiece detection assembly is fixed on the rack, is positioned at the front end of the polishing path and is used for detecting the surface of the workpiece; the milling assembly is fixed on the rack, arranged at the rear end of the workpiece detection assembly and used for milling the surface of the workpiece according to the detection result of the workpiece detection assembly; the abrasive belt grinding component is fixed on the rack, arranged at the rear end of the milling component and used for grinding the surface of the workpiece according to the detection result of the workpiece detection component; and the chain rotating assembly is fixed on the rack, arranged at the rear end of the milling assembly and flush with the abrasive belt polishing assembly, and is used for driving the abrasive belt polishing assembly in real time according to the detection result of the workpiece detection assembly.
In one embodiment, the workpiece detection assembly comprises a visual detection sensor and a control chip, the visual detection sensor is positioned at the front end of the polishing path and is used for detecting the surface condition of the region to be polished to generate a detection result in real time, and the control chip dynamically controls the milling assembly and the abrasive belt polishing assembly to move according to the detection result.
In one embodiment, the milling assembly includes a powered spindle secured to the frame, a milling head coupled to the powered spindle for milling the surface of the workpiece.
In one embodiment, the milling assembly further comprises a milling cutter limiting pulley located on the side of the milling cutter head and a milling force control unit connected with the power spindle, the milling cutter limiting pulley is used for protecting the milling cutter head from being damaged during milling, and the milling force control unit is used for achieving flexible curved surface milling according to the surface complexity of a workpiece.
In one embodiment, the milling force control unit comprises: a data processor for receiving the detection result and generating a control signal; the pressure piece is used for applying the downward milling pressure of the milling head according to the control signal; and the milling force control elastic part is used for adjusting milling force.
In one embodiment, the belt sanding assembly comprises: the axle center of the follow-up wheel is fixed at the upper end of the rack and is linked with the chain rotating assembly through a chain; the wheel axle center of the grinding wheel is fixed at the lower end of the follow-up wheel and is used for grinding the surface of the workpiece under the driving of the abrasive belt; the axis of the tensioning wheel unit is fixed on the frame and used for tensioning the abrasive belt; and the grinding force control unit is arranged between the follower wheel and the grinding wheel and used for controlling the force applied to the grinding wheel according to the detection result of the workpiece detection assembly so as to realize the grinding of the flexible curved surface.
In one embodiment, the tensioning wheel unit comprises a tensioning cylinder and a pressing wheel, the tensioning cylinder drives the pressing wheel to move forwards, and the pressing wheel is in close contact with the back surface of the abrasive belt, so that the abrasive belt is always kept in a fastened state.
In one embodiment, the chain turning assembly comprises: the output shaft of the motor is connected with a driving wheel, and the driving wheel is connected with a follow-up wheel of the abrasive belt polishing assembly through a chain; an idler assembly disposed at an upper end of the chain for tensioning the chain.
In one embodiment, the guard mechanism comprises: the cover body is used for accommodating the polishing mechanism and is provided with a liftable front cover and a rear cover matched with the liftable front cover; the cover cap lifting cylinder is used for lifting the cover cap; the cover cap lifting linear guide rail is arranged between the lifting front cover and the rear cover and is used for controlling the lifting front cover not to deviate in the relative motion direction when the lifting front cover is lifted up and down; the dustproof brush flange is arranged on the lower edge of the cover body and used for preventing dust and particles from overflowing out of the bottom of the station.
Compared with the prior art, the utility model has the advantages that: aiming at large grinding workload of a large-allowance welding seam, uneven welding seam grinding allowance, welding seam position deviation and the like, the workpiece detection assembly arranged at the front end is used for extracting welding seam allowance (welding seam height, width and misalignment information) and welding seam position deviation information, and then the position of a robot hand is adjusted to realize self-adaptive deviation correction of a robot track, so that the problems of difficulty in grinding and instability in grinding caused by inconsistent welding seam positions are solved; and the milling and grinding process is intelligently adjusted on line in real time according to the detection result of the workpiece detection assembly, and customized grinding of welding seams with different margins is realized by using the milling assembly and the abrasive belt grinding assembly, so that accurate process control of milling and grinding is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a workpiece weld seam milling and grinding device in an embodiment of the utility model;
FIG. 2 is a schematic view showing a structure of a polishing portion in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a grinding mechanism in an embodiment of the utility model;
FIG. 4 is a schematic diagram of a milling assembly in an embodiment of the utility model;
FIG. 5 is a schematic illustration of a belt sanding assembly in an embodiment of the present invention;
figure 6 is a schematic diagram of the construction of a tensioner unit in an embodiment of the utility model;
FIG. 7 is a schematic view of the structure of a chain turning assembly in an embodiment of the present invention;
fig. 8 is a schematic structural view of a guard mechanism in an embodiment of the present invention.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that aspects may be practiced without these specific details.
As shown in fig. 1, the embodiment of the present application provides a workpiece weld seam milling and grinding device, which includes a robot arm 1 and a grinding part 2.
The robot 1 is provided with a numerical control base and a robot body arranged on the numerical control base, and the tail end of the robot body is connected with the numerical control base. The numerical control base is in communication connection with the workpiece detection assembly 12 in the polishing part 2, and the numerical control base can be in communication connection with the workpiece detection assembly 12 through a wireless module or in communication connection with the workpiece detection assembly 12 through an electric wire arranged in the robot body. The wireless module can be a Bluetooth module, an infrared module, a wifi module, a zigbee module, etc. The numerical control base moves the robot body according to the detection result of the workpiece detection assembly 12, drives the polishing part 2 to move freely, and then ensures that the polishing part 2 corresponds to the large-allowance weld joint position to be milled and ground in real time.
The polishing part 2 is connected to the head end of the robot body and used for polishing the surface of a workpiece under the driving of the robot body, so that the removing depth of a welding seam is controlled.
As shown in fig. 2, the polishing unit 2 includes a polishing mechanism 4 connected to the head end of the robot body and a protection mechanism 3 provided around the outside of the polishing mechanism.
The protection mechanism 3 is arranged on the periphery of the polishing mechanism 4, so that the polishing mechanism 4 can be protected from being interfered by external sundries, and the normal work of the polishing mechanism 4 is ensured. Protection machanism 3 can also avoid grinding mechanism 4 to mill the excessive outside to the station of polishing such as the particulate matter or dust that produce when grinding the work, reduces dust or particulate matter diffusion. In one embodiment, the guard mechanism 3 may also be a transparent housing to allow the user to observe the operation of the sharpening mechanism 4 in real time. As shown in fig. 2, the grinding mechanism 4 is protected by the guard mechanism 3 except for the workpiece detection assembly 12 which is not protected by the guard mechanism 3.
As shown in fig. 3, the sharpening mechanism 4 comprises a frame, a workpiece detection assembly 12, a milling assembly 11, a belt sharpening assembly 10 and a chain rotation assembly 9.
The frame is connected with the robot body through a through hole at the upper end of the protection mechanism 3, and the workpiece detection component 12, the milling component 11, the abrasive belt polishing component 10 and the chain rotating component 9 are all fixed on the frame.
And the workpiece detection assembly 12 is fixed on the frame and positioned at the front end of the grinding path and is used for detecting the surface of the workpiece. In one embodiment, the workpiece detection assembly 12 may include a vision detection sensor and a control chip. The visual detection sensor is positioned at the front end of the polishing path, detects the surface condition of the region to be polished to generate a detection result in real time, and can be a laser visual detection sensor, a photographic element or an infrared visual detection sensor and the like. And the control chip dynamically controls the movement of the milling component and the abrasive belt grinding component according to the detection result. The control chip can generate size data, position data and the like of the welding seam according to the detection result. The control chip can store a recognition model trained in advance, and the recognition model can be obtained by learning and training according to a sample welding line picture shot in advance. The control chip can be an electronic element with an operation function, such as an FPGA, a CPU, a GPU and the like.
And the milling component 11 is fixed on the frame and arranged at the rear end of the workpiece detection component 12 and is used for milling the surface of the workpiece according to the detection result of the workpiece detection component. A control chip in the workpiece detection assembly 12 stores the distance coordinates between the milling assembly 11 and the vision detection sensors to accurately generate a milling path for the weld joint by the milling assembly 11. The milling assembly 11 may comprise a milling cutter or a milling disc or the like.
And the abrasive belt grinding component 10 is fixed on the frame, arranged at the rear end of the milling component and used for grinding the surface of the workpiece according to the detection result of the workpiece detection component. The control chip in the workpiece detection assembly 12 can control the abrasive belt polishing assembly 10 to polish the surface of the workpiece after the welding seam is milled by the milling assembly 11, so that the final smooth surface of the workpiece is ensured.
And the chain rotating assembly 9 is fixed on the frame, arranged at the rear end of the milling assembly and flush with the abrasive belt polishing assembly, and is used for driving the abrasive belt polishing assembly in real time according to the detection result of the workpiece detection assembly. The chain turning assembly 9 may include a transmission motor or the like.
According to the workpiece weld joint detection, milling and grinding equipment, aiming at large grinding workload of large-allowance weld joints, uneven weld joint grinding allowance, weld joint position deviation and the like, the workpiece detection assembly at the front end of the equipment is used for extracting weld joint allowance (weld joint height, width and misalignment information) and weld joint position deviation information, and then the position of a robot hand is adjusted to realize self-adaptive deviation correction of a robot track, so that the problems of difficulty in grinding and instability in grinding caused by inconsistent weld joint positions are solved; and the milling and grinding process is intelligently adjusted on line in real time according to the detection result of the workpiece detection assembly, and customized grinding of welding seams with different margins is realized by using the milling assembly and the abrasive belt grinding assembly, so that accurate process control of milling and grinding is realized.
As shown in fig. 4, in one embodiment, the milling assembly 11 includes a power spindle 13 fixed to the frame, and a milling head 14 coupled to the power spindle 13 for milling a surface of a workpiece. In one embodiment, the milling assembly 11 further comprises a cutter limiting pulley 15 located at a side of the milling head, and a milling force control unit 16 connected to the power spindle, wherein the cutter limiting pulley 15 is used for protecting the milling head from being damaged during milling. The milling force control unit 16 is used for realizing flexible curved surface milling according to the surface complexity of the workpiece.
In one embodiment, the milling force control unit 16 comprises a data processor, a pressure element and a milling force control spring.
And the data processor is used for receiving the detection result and generating a control signal. The data processor can receive the electric control signal generated by the control chip and also can directly receive the detection result generated by the visual detection sensor. And the data processor generates a control signal for controlling the force application of the milling head according to the received detection result.
And the pressure piece is used for applying the downward milling pressure of the milling head according to the control signal.
And the milling force control elastic part is used for adjusting milling force. The milling force control elastic element can be a spring or plastic with a memory function.
As shown in fig. 5, in one embodiment belt sanding assembly 10 includes a follower wheel 20, a sanding wheel 22, a sanding belt 24, a tension wheel unit 23, and a sanding force control unit 25.
And a follower wheel 20, the axle center of which is fixed at the upper end of the frame and is linked with the chain rotating assembly through a chain. Follower wheel 20 transmits power to grinding wheel 22 through belt 24.
And a grinding wheel 22, the axle center of which is fixed at the lower end of the driven wheel and is used for grinding the surface of the workpiece under the driving of a grinding belt 24. Grinding wheel 22 contacts the workpiece surface to begin grinding.
And a tensioning wheel unit 23, the axis of which is fixed on the frame, and used for tensioning the abrasive belt 24 so that the grinding action can normally run. A tensioning wheel unit 23 is located intermediate the idler wheel 20 and the grinding wheel 22.
And the grinding force control unit 25 is arranged between the follower wheel and the grinding wheel and is used for controlling the force applied to the grinding wheel according to the detection result of the workpiece detection assembly so as to realize the grinding of the flexible curved surface. The sanding force control unit 25 connects the individual components or units in the entire belt sanding device 10. The flexible curved surface polishing machine can improve polishing quality, and flexible curved surface polishing is achieved according to the surface complex condition of a workpiece.
As shown in fig. 6, in one embodiment, the tension wheel unit 23 comprises a tension cylinder 26 and a pressure wheel 27, the tension cylinder 26 drives the pressure wheel 27 to move forward, and the pressure wheel 27 is in close contact with the back surface of the abrasive belt 24, so that the abrasive belt 24 is always kept in a tightened state.
In one embodiment, the grinding force control unit 25 may be similar in structure to the milling force control unit 16, including a data processor, a pressure member, and a grinding force control spring. The grinding force control unit 25 may apply a weaker pressure to the grinding wheel 22 than the milling force control unit 16 applies to the milling head 14.
And the data processor is used for receiving the detection result and generating a control signal. The data processor can receive the electric control signal generated by the control chip and also can directly receive the detection result generated by the visual detection sensor. The data processor generates control signals for controlling the force applied by grinding wheel 22 based on the received detection results.
And a pressure member for applying a downward grinding pressure of the grinding wheel 22 according to the control signal.
The polishing force control elastic piece is used for adjusting polishing force. The grinding force control elastic piece can be a spring or plastic with a memory function.
As shown in fig. 7, in one embodiment, the chain turning assembly 9 includes a drive motor 17 and an idler assembly 19.
The transmission motor 17, the motor output shaft is connected with the drive wheel 18, and the drive wheel 18 is connected with the follower wheel 20 of the belt sanding component through the chain 21. The driving motor 17 drives the driving wheel 18 and the chain 21 to do circular rotation movement. The drive motor 17 is mounted directly below the frame and on the side remote from the workpiece detection assembly 12.
An idler assembly 19 is provided at the upper end of the chain for tensioning the chain. The idler assembly 19 includes an idler and a mounting member that secures the idler to the frame. The idler presses on the chain 21 and it tensions the chain 21, ensuring proper circulation of the chain 21.
As shown in fig. 8, in one embodiment, the guard mechanism 3 includes a housing, a cover lifting cylinder 7, a cover lifting linear guide 8, and a brush dust rib 5.
The cover body is used for accommodating the grinding mechanism and is provided with a liftable front cover 6 and a rear cover matched with the liftable front cover.
And the cover lifting cylinder 7 is used for lifting the cover.
And the cover cap lifting linear guide rail 8 is arranged between the lifting front cover 6 and the rear cover and is used for controlling the lifting front cover 6 not to deviate in the relative motion direction when the lifting front cover 6 is lifted up and down.
The dustproof brush flange 5 is arranged on the lower edge of the cover body and used for preventing dust and particles from overflowing out of the bottom of the station.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a work piece welding seam is examined and is milled grinding equipment which characterized in that includes:
the robot hand is provided with a numerical control base and a robot hand body arranged on the numerical control base, and the tail end of the robot hand body is connected with the numerical control base; and
a grinding part connected with the head end of the robot body and used for grinding the surface of a workpiece under the driving of the robot body so as to control the removal depth of a welding seam,
the polishing part comprises a polishing mechanism connected with the head end of the robot hand body and a protection mechanism sleeved outside the polishing mechanism;
grinding machanism includes:
a frame;
the workpiece detection assembly is fixed on the rack, is positioned at the front end of the grinding path and is used for detecting the surface of the workpiece;
the milling assembly is fixed on the rack, arranged at the rear end of the workpiece detection assembly and used for milling the surface of the workpiece according to the detection result of the workpiece detection assembly;
the abrasive belt grinding component is fixed on the rack, arranged at the rear end of the milling component and used for grinding the surface of the workpiece according to the detection result of the workpiece detection component;
and the chain rotating assembly is fixed on the rack, arranged at the rear end of the milling assembly and flush with the abrasive belt grinding assembly, and is used for driving the abrasive belt grinding assembly in real time according to the detection result of the workpiece detection assembly.
2. The workpiece weld seam detecting, milling and grinding equipment as claimed in claim 1, wherein the workpiece detection assembly comprises a vision detection sensor and a control chip, the vision detection sensor is positioned at the front end of the grinding path and detects the surface condition of the area to be ground to generate a detection result in real time, and the control chip dynamically controls the movement of the milling assembly and the belt grinding assembly according to the detection result.
3. The workpiece weld seam milling and grinding equipment as recited in claim 1, wherein the milling assembly comprises a power spindle fixed to the frame, and a milling head coupled to the power spindle for milling the surface of the workpiece.
4. The workpiece weld seam milling and grinding device as claimed in claim 3, wherein the milling assembly further comprises a milling cutter limiting pulley located on the side of the milling cutter head and a milling force control unit connected with the power spindle, the milling cutter limiting pulley is used for protecting the milling cutter head from being damaged during milling, and the milling force control unit is used for realizing flexible curved surface milling according to the surface complexity of the workpiece.
5. The workpiece weld seam milling and grinding equipment as set forth in claim 4, wherein the milling force control unit comprises:
a data processor for receiving the detection result and generating a control signal;
the pressure piece is used for applying the downward milling pressure of the milling head according to the control signal;
and the milling force control elastic part is used for adjusting milling force.
6. The workpiece weld seam milling apparatus of claim 1, wherein the belt sanding assembly comprises:
the axle center of the follow-up wheel is fixed at the upper end of the rack and is linked with the chain rotating assembly through a chain;
the wheel axle center of the grinding wheel is fixed at the lower end of the follow-up wheel and is used for grinding the surface of the workpiece under the driving of the abrasive belt;
the axis of the tensioning wheel unit is fixed on the frame and used for tensioning the abrasive belt;
and the grinding force control unit is arranged between the follower wheel and the grinding wheel and used for controlling the force applied to the grinding wheel according to the detection result of the workpiece detection assembly so as to realize the grinding of the flexible curved surface.
7. The workpiece weld seam milling and grinding equipment as claimed in claim 6, wherein the tension wheel unit comprises a tension cylinder and a pressing wheel, the tension cylinder drives the pressing wheel to move forward, and the pressing wheel is in close contact with the back of the abrasive belt, so that the abrasive belt is always kept in a tightened state.
8. The workpiece weld milling apparatus of claim 1, wherein the chain rotation assembly comprises:
the output shaft of the motor is connected with a driving wheel, and the driving wheel is connected with a follow-up wheel of the abrasive belt polishing assembly through a chain;
an idler assembly disposed at an upper end of the chain for tensioning the chain.
9. The workpiece weld seam milling and grinding apparatus of claim 1, wherein the protection mechanism comprises:
the cover body is used for accommodating the polishing mechanism and is provided with a liftable front cover and a rear cover matched with the liftable front cover;
the cover cap lifting cylinder is used for lifting the cover cap;
the cover cap lifting linear guide rail is arranged between the lifting front cover and the rear cover and is used for controlling the lifting front cover not to deviate in the relative motion direction when the lifting front cover is lifted up and down;
the dustproof brush flange is arranged on the lower edge of the cover body and used for preventing dust and particles from overflowing out of the bottom of the station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122650320.XU CN216503985U (en) | 2021-11-01 | 2021-11-01 | Workpiece weld joint detection, milling and grinding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122650320.XU CN216503985U (en) | 2021-11-01 | 2021-11-01 | Workpiece weld joint detection, milling and grinding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216503985U true CN216503985U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122650320.XU Active CN216503985U (en) | 2021-11-01 | 2021-11-01 | Workpiece weld joint detection, milling and grinding equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN216503985U (en) |
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2021
- 2021-11-01 CN CN202122650320.XU patent/CN216503985U/en active Active
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