CN210848884U

CN210848884U - Numerical control welding machine

Info

Publication number: CN210848884U
Application number: CN201921559618.6U
Authority: CN
Inventors: 黄景飞; 吴天瑞
Original assignee: Changshu Institute of Technology
Current assignee: Changshu Institute of Technology
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-26
Anticipated expiration: 2029-09-19

Abstract

The utility model provides a numerical control welding machine, which belongs to the welding technology field, which comprises a controller, a pedestal, operation platform, the pillar, it is first, the second, third direction drive assembly, the welding subassembly, the detection module, it is first, second direction drive assembly arranges from top to bottom between base and operation platform, drive operation platform is first, the removal on the second direction, still be provided with the pillar on the base, third direction drive assembly is installed on the upper portion of pillar, install the welding subassembly on the third direction drive assembly, the welding subassembly is located the operation platform top, a machine to weld waiting to place on the operation platform, third direction drive assembly drive welding subassembly moves in the third direction, the detection module is connected on the welding subassembly, move along with the removal of welding subassembly, the detection module is arranged in the quality that detects the welding seam and passes back to in the controller. The advantages are that: the full-automatic operation of welding is realized, the welding machine has the characteristics of simple manufacture, small investment and various welding products, and the problem of weld joint inspection is solved.

Description

Numerical control welding machine

Technical Field

The utility model belongs to the technical field of the welding, concretely relates to numerical control welding machine.

Background

Most of the automatic welding equipment in the market is designed by taking a numerical control system or a robot arm as a main body, wherein the automatic welding machine adopting the numerical control system is designed around a certain welding part, and although the welding efficiency of a part of the welding part is improved, the type of the welding part is also greatly limited. Automatic reform is intentionally carried out in many small and medium-sized enterprises in China to improve the productivity, but the large-sized equipment is purchased without funds, the welding function and products of the common automatic welding machine are too single, and once the welding products are frequently replaced due to small errors in decision making, the equipment which is just bought for several years is idle and goes into a very embarrassing situation. The automatic welding machine designed by taking the robot arm as the main body is more flexible and changeable, but the relative welding price is more expensive, and the automatic welding machine is not affordable for general small and medium-sized enterprises. And above-mentioned two kinds of automatic weld machines all have the problem of detecting, and the quality of welding seam when can't detect the welding needs extra manual work to come to inspect the welding seam of welding spare, greatly reduced work efficiency.

In view of the above-mentioned prior art, there is a need for a reasonable improvement in existing welder construction. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a numerical control welding machine, the device realize welded full automatization operation with numerical control technique in being applied to welding industry, have make simple, invest in for a short time, the manifold characteristics of welding product, very the demand that accords with present internal medium and small enterprise and industrial development, solved the problem of the welding seam inspection of welding simultaneously.

The utility model aims to solve the problems that the numerical control welding machine comprises a controller, a base, an operating platform, a support column, a first direction driving component, a second direction driving component, a third direction driving component, a welding component and a detection component, wherein the controller controls the first direction driving component, the second direction driving component, the third direction driving component, the welding component and the detection component to run, the first direction driving component and the second direction driving component are arranged between the base and the operating platform, the first direction driving component and the second direction driving component are arranged up and down and respectively drive the operating platform to move in the first direction and the second direction, the first direction and the second direction are vertical, the base is also provided with the support column, the third direction driving component is arranged on the upper part of the support column, and the welding component is arranged on the third direction driving component, the welding assembly is located above the operating platform and used for welding a to-be-welded part placed on the operating platform, the third direction driving assembly drives the welding assembly to move in the third direction, the third direction is perpendicular to the first direction and the second direction, the detection assembly is connected to the welding assembly and moves along with the movement of the welding assembly, and the detection assembly is used for detecting the quality of a welding seam and transmitting the quality back to the controller.

In a specific embodiment of the present invention, the first direction driving assembly comprises a guide rail seat i, a guide rail i, a ball screw i, a stepping motor i, a coupler i, a guide rail slider i, a nut seat i, and a screw nut i, wherein the guide rail seat i is fixed on a base, a pair of guide rails i is arranged on the guide rail seat i in parallel along a first direction, i.e. a Y-axis direction, the ball screw i is arranged between the pair of guide rails i in parallel and rotatably mounted on the guide rail seat i, the ball screw i is connected with the stepping motor i through the coupler i, the guide rail slider i is arranged on the pair of guide rails i in a sliding manner, the guide rail slider i is provided with the second direction driving assembly, the nut seat i is mounted below the second direction driving assembly corresponding to the position of the ball screw i, the screw nut i matched with the ball screw i is mounted in the nut seat i, step motor I install on guide rail seat I.

In another specific embodiment of the present invention, at least two rail sliders i are respectively disposed on the pair of rails i.

In another specific embodiment of the present invention, the second direction driving assembly comprises a guide rail seat II, a guide rail II, a ball screw II, a stepping motor II, a coupling II, a guide rail slider II, a nut seat II, and a screw nut II, a pair of guide rails II are arranged on the guide rail base II in parallel along a second direction, namely the x-axis direction, a ball screw II which is parallel to the guide rails II and is rotatably arranged on the guide rail base II is arranged between the guide rails II, the ball screw II is connected with the stepping motor II through a coupler II, the pair of guide rails II are provided with guide rail sliding blocks II in a sliding manner, an operating platform is arranged on the guide rail sliding block II, a nut seat II is arranged below the operating platform and corresponds to the position of the ball screw II, and a screw nut II matched with the ball screw II is arranged in the nut seat II, and the stepping motor II is arranged on the guide rail seat II.

In another specific embodiment of the present invention, the pair of guide rails ii are respectively provided with at least two guide rail sliding blocks ii.

In still another specific embodiment of the present invention, the third direction driving assembly includes a guide rail seat iii, a guide rail iii, a ball screw iii, a stepping motor iii, a shaft coupling iii, a guide rail slider iii, a nut seat iii, and a screw nut iii, one side of the guide rail seat iii is mounted on the pillar, the other side is provided with a pair of guide rails iii in parallel along the third direction, i.e. the Z-axis direction, a ball screw iii parallel to and rotatably mounted on the guide rail seat iii is disposed between the pair of guide rails iii, the ball screw iii is connected with the stepping motor iii through the shaft coupling iii, the pair of guide rails iii is slidably provided with a guide rail slider iii, the guide rail slider iii is provided with a welding assembly, the nut seat iii is mounted at a position corresponding to the ball screw iii of the welding assembly, the nut seat iii is provided with a screw nut iii matching with the ball screw nut iii, and the stepping motor III is arranged on the guide rail seat III.

In yet another specific embodiment of the present invention, the pair of guide rails iii are respectively provided with at least two guide rail sliders iii.

In the present invention, the welding assembly includes a mounting platform, a welding head and a mounting plate, wherein one side of the mounting platform is connected to the third direction driving assembly, and the other side of the mounting platform is fixed with the mounting plate, and the welding head is mounted on the mounting plate towards the operating platform.

In yet another specific embodiment of the present invention, the detecting component includes a camera, and the camera is installed on the installation platform.

The utility model discloses a still more and a concrete embodiment, mounting platform and mounting panel between add a revolving cylinder, revolving cylinder have along the rotatory upset dish of x axle or y axle, the mounting panel install on the upset dish, install the soldered connection on a mounting panel side, install the camera on the another side, through control revolving cylinder, realize the upset of soldered connection and camera.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: firstly, the superior performance of a numerical control machine tool is comprehensively utilized, the movement of an X axis and a Y axis is simplified by using the matching of a ball screw and a screw nut and the transmission effect of a linear guide rail, so that the precision of a welding machine is ensured; secondly, different parameters can be set for different welding seams to complete the perfect welding of various welding seams; and thirdly, the detection assembly is utilized to record the welding condition of the welding seam of the welding part and transmit the welding condition to a display screen of the controller for display, so that inspectors can check the welding condition, and then the welding condition is classified according to the quality of the welding part, thereby simplifying the detection process of the welding seam and realizing automation.

Drawings

Figure 1 is the utility model discloses a numerical control welding machine's stereogram.

FIG. 2 is the utility model discloses numerical control welding machine's third direction drive assembly, welding subassembly and determine module's cooperation schematic diagram.

In the figure: 1. a base; 2. an operating platform; 3. a pillar;

4. the device comprises a first direction driving assembly 41, guide rail bases I and 42, guide rails I and 43, ball screws I and 44, stepping motors I and 45, couplings I and 46, guide rail sliding blocks I and 47, nut bases I and 48 and a screw nut I;

5. the second direction driving assembly comprises a second direction driving assembly 51, guide rail bases II and 52, guide rails II and 53, ball screws II and 54, stepping motors II and 55, couplings II and 56, guide rail sliding blocks II and 57, nut bases II and 58 and a screw nut II;

6. a third direction driving assembly 61, guide rail seats III and 62, guide rails III and 63, ball screws III and 64, stepping motors III and 65, couplers III and 66, guide rail sliding blocks III and 67, nut seats III and 68 and screw nuts III;

7. the welding assembly, 71, an installation platform, 72, a welding head, 73, an installation plate, 74, a rotary cylinder and 741, a turnover disc;

8. detection element, 81 camera.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of the upper, lower, left, right, front and rear is based on the position shown in the specific drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention. In addition, in the present embodiment, the height direction is defined as a z-axis direction, and two directions perpendicular to the z-axis and perpendicular to each other are respectively set as an x-axis and a y-axis, and the x-axis, the y-axis and the z-axis directions are specifically shown in fig. 1.

As shown in fig. 1 and 2, the utility model relates to a numerical control welding machine, including controller, base 1, operation platform 2, pillar 3, first direction drive assembly 4, second direction drive assembly 5, third direction drive assembly 6, welding subassembly 7, determine module 8 etc.. The controller controls the operation of the first direction driving assembly 4, the second direction driving assembly 5, the third direction driving assembly 6, the welding assembly 7 and the detection assembly 8. Base 1 and operation platform 2 between install first direction drive assembly 4 and second direction drive assembly 5, first direction drive assembly 4 and second direction drive assembly 5 arrange from top to bottom, drive operation platform 2 respectively and remove in first direction and second direction, first direction and second direction mutually perpendicular. In this embodiment, the first direction driving assembly 4 is located below the second direction driving assembly 5, and assuming that the first direction is a y-axis direction, the second direction is an X-axis direction, that is, the first direction driving assembly 4 drives the operating platform 2 to move along the y-axis direction, and the second direction driving assembly 5 drives the operating platform 2 to move along the X-axis direction. Base 1 on still be provided with pillar 3, third direction drive assembly 6 is installed on the upper portion of pillar 3, third direction drive assembly 6 on install welding set 7, welding set 7 be located operation platform 2 top for to the welding of waiting of placing on operation platform 2. The third direction driving assembly 6 drives the welding assembly 7 to move in a third direction, the third direction is perpendicular to the first direction and the second direction, and in this embodiment, the third direction is a z-axis direction. The detection assembly 8 is connected to the welding assembly 7 and moves along with the movement of the welding assembly 7, and the detection assembly 8 is used for detecting the quality of a welding seam and transmitting the quality back to a display screen of the controller.

As shown in fig. 1, the first direction driving assembly 4 comprises a guide rail seat i 41, a guide rail i 42, a ball screw i 43, a stepping motor i 44, a coupling i 45, a guide rail slider i 46, a nut seat i 47 and a screw nut i 48; guide rail seat I41 be fixed in on the base 1, guide rail seat I41 on along first direction Y axle direction parallel arrangement promptly a pair of guide rail I42, be equipped with between a pair of guide rail I42 with it parallel and rotate ball I43 of installing on guide rail seat I41, ball I43 through I45 and step motor I44 associative of shaft coupling. The pair of guide rails I42 are provided with guide rail sliding blocks I46 in a sliding mode, the guide rail sliding blocks I46 are provided with second direction driving assemblies 5, nut seats I47 are arranged on the positions, corresponding to the ball screws I43, below the second direction driving assemblies 5, and screw nuts I48 matched with the ball screws I43 are installed in the nut seats I47. The stepping motor I44 is arranged on the guide rail seat I41. At least two guide rail sliding blocks I46 are arranged on each guide rail I42, so that the motion of the operating platform 2 in the y-axis direction is ensured to be horizontal. Step motor I44 during operation drive ball I43 and rotate, thereby ball I43 and screw nut I48 cooperation action drive second direction drive assembly 5 and remove along Y axle direction, the removal of second direction drive assembly 5 drives its upper operation platform 2 and removes along I42 of guide rail to realize that second direction drive assembly removes along first direction Y axle direction promptly.

As shown in fig. 1, the second direction driving assembly 5 includes a guide rail seat ii 51, a guide rail ii 52, a ball screw ii 53, a stepping motor ii 54, a coupling ii 55, a guide rail slider ii 56, a nut seat ii 57, and a screw nut ii 58. A pair of guide rails II 52 are arranged on the guide rail base II 51 in parallel along a second direction, namely the x-axis direction, a ball screw II 53 which is parallel to the guide rails II 52 and is rotatably arranged on the guide rail base II 51 is arranged between the guide rails II 52, and the ball screw II 53 is connected with a stepping motor II 54 through a coupler II 55. The pair of guide rails II 52 are provided with guide rail sliding blocks II 56 in a sliding mode, the guide rail sliding blocks II 56 are provided with an operating platform 2, a nut seat II 57 is arranged at the position, corresponding to the ball screw II 53, below the operating platform 2, and a screw nut II 58 matched with the ball screw II 53 is arranged in the nut seat II 57. And the stepping motor II 54 is arranged on the guide rail seat II 51. At least two guide rail sliding blocks II 56 are arranged on each guide rail II 52, so that the movement of the operating platform 2 in the X-axis direction is ensured to be horizontal. When the stepping motor II 54 works, the ball screw II 53 is driven to rotate, the ball screw II 53 and the screw nut II 58 are matched to drive the operating platform 2 to move along the x-axis direction, the operating platform 2 is driven to move to drive a part to be welded on the operating platform to move along the guide rail II 52, and therefore the operating platform and the part to be welded on the operating platform move along the second direction, namely the x-axis direction.

As shown in fig. 1 and 2, the third direction driving assembly 6 includes a guide rail seat iii 61, a guide rail iii 62, a ball screw iii 63, a stepping motor iii 64, a coupling iii 65, a guide rail slider iii 66, a nut seat iii 67, and a screw nut iii 68. The welding assembly 7 comprises a mounting platform 71, a welding head 72 and a mounting plate 73, wherein one side surface of the mounting platform 71 is connected with the third direction driving assembly 6, and the other side surface is provided with the welding head 72 and other components. A side of guide rail seat III 61 is installed on pillar 3, and another side is gone up along the third direction and is Z axle direction parallel arrangement has a pair of guide rail III 62 promptly, be equipped with between a pair of guide rail III 62 with it parallel and rotate the ball screw III 63 of installing on guide rail seat III 61, ball screw III 63 pass through shaft coupling III 65 and step motor III 64 associative. The pair of guide rails III 62 are provided with guide rail sliding blocks III 66 in a sliding manner, the guide rail sliding blocks III 66 are provided with installation platforms 71, nut seats III 67 are installed at positions, corresponding to the ball screws III 63, of the installation platforms 71, and screw nuts III 68 matched with the ball screws III 63 are installed in the nut seats III 67. The stepping motor III 64 is arranged on the guide rail seat III 61. At least two guide rail sliding blocks III 66 are arranged on each guide rail III 62, so that the movement of the welding head 72 in the z-axis direction is vertical. The simple mounting of the welding head 72 may be: the mounting plate 73 is horizontally mounted on the mounting platform 71, and the welding head 72 is vertically mounted on the mounting plate 73 downward. In order to increase the function of efficient detection of the welded parts, the mounting platform 71 is additionally provided with the monitoring assembly 8, and the detection assembly 8 comprises a camera 81. Specifically, a rotary cylinder 74 is additionally arranged between the mounting platform 71 and the mounting plate 73, the rotary cylinder 74 is provided with a turnover disc 741 rotating along the x axis or the y axis, and the turnover disc 741 in this embodiment rotates along the x axis. The mounting plate 73 is mounted on the turnover disc 741, the mounting plate 73 is a transverse plate or a T-shaped plate, and the transverse plate is vertically mounted on the turnover disc 741 in this embodiment. The welding head 72 is arranged on one side surface of the mounting plate 73, the camera 81 is arranged on the other side surface of the mounting plate, and the welding head 72 and the camera 81 are turned over by controlling the rotary air cylinder 74. When the stepping motor III 64 works, the ball screw III 63 is driven to rotate, the ball screw III 63 and the screw nut III 68 are matched to act so as to drive the mounting platform 71 to move along the z-axis direction, and the movement of the mounting platform 71 drives the upper welding head 72 and the camera 81 thereof to move along the direction of the guide rail III 62, so that the mounting platform 71, the upper welding head 72 and the camera 81 thereof move along the third direction, namely the z-axis direction.

Table 1 shows the calculation formula of the electrode consumption for different welding cross sections:

table 1 is the text content of the second section of the fifth chapter of this book "advanced electric welder technology", and it can be seen from table 1 that the cross-sectional areas of different welding seams are different, so the amount of welding rod consumed during welding is different, and we are required to set different speeds according to different welding seams in the numerical control. For example, a certain speed is selected as a reference speed, different constants K are set according to different welding seams, and corresponding K values are input to the controller to change the moving speed of the operating platform and the moving speed of the Z axis, so that the required welding seam is welded and the tightness of the welding seam is ensured. Or the related information of the welding seam is directly stored in the controller, and the controller outputs the corresponding speeds of the operation platform movement and the Z-axis movement as long as the welding seam requirement is input.

As shown in fig. 1, the stepping motor i 44, the stepping motor ii 54 and the stepping motor iii 64 are all electrically connected to a controller, the controller adopts the existing PLC control technology and combines a numerical control system and a servo drive, and the controller belongs to the known technology and can be directly purchased in the market.

With reference to fig. 1 and fig. 2, the numerical control welding machine of the present invention has the following working processes: and placing the to-be-welded part on the operation platform, fixing the to-be-welded part, inputting requirements such as welding seam requirements and welding seam tracks of the to-be-welded part into the controller, and controlling the stepping motor I44, the stepping motor II 54 and the stepping motor III 64 to work through the controller. In the working process, the stepping motor I44 drives the guide rail seat II 51 and the upper part thereof to move along the Y-axis direction through the ball screw I43, the stepping motor II 54 drives the operating platform 2 and the workpiece to be welded thereon to move along the X-axis direction through the ball screw II 53, and the stepping motor III 64 drives the mounting platform 71 and the upper welding head 72 thereof and the camera 81 to move along the Z-axis direction through the ball screw III 63, so that the workpiece to be welded is welded. In the welding process, the camera 81 is arranged above the mounting plate 73, and the welding head 72 is arranged below the mounting plate; after welding is finished, the rotary air cylinder 74 controls the position exchange of the welding head 72 and the camera 81, so that the camera 81 moves once more along the track just taken during welding, and the pictures shot by the camera 81 are numbered and uploaded and are looked up by a specially-assigned person for checking. The numerical control welding machine not only enables the welding head to be accurately welded, but also can be effectively checked, has high automation degree, effectively ensures the welding quality of products, improves the production efficiency and lightens the labor intensity of workers.

Claims

1. A numerical control welding machine is characterized by comprising a controller, a base (1), an operating platform (2), a support column (3), a first direction driving assembly (4), a second direction driving assembly (5), a third direction driving assembly (6), a welding assembly (7) and a detection assembly (8), wherein the controller controls the first direction driving assembly (4), the second direction driving assembly (5), the third direction driving assembly (6), the welding assembly (7) and the detection assembly (8) to run, the first direction driving assembly (4) and the second direction driving assembly (5) are installed between the base (1) and the operating platform (2), the first direction driving assembly (4) and the second direction driving assembly (5) are arranged up and down and respectively drive the operating platform (2) to move in a first direction and a second direction, and the first direction and the second direction are perpendicular, the welding device is characterized in that a support column (3) is further arranged on the base (1), a third-direction driving assembly (6) is mounted on the upper portion of the support column (3), a welding assembly (7) is mounted on the third-direction driving assembly (6), the welding assembly (7) is located above the operating platform (2) and used for welding a to-be-welded part placed on the operating platform (2), the third-direction driving assembly (6) drives the welding assembly (7) to move in the third direction, the third direction is perpendicular to the first direction and the second direction, the detection assembly (8) is connected to the welding assembly (7) and moves along with the movement of the welding assembly (7), and the detection assembly (8) is used for detecting the quality of a welding seam and transmitting the quality back to the controller; the first direction driving assembly (4) comprises a guide rail seat I (41), a guide rail I (42), a ball screw I (43), a stepping motor I (44), a coupler I (45), a guide rail sliding block I (46), a nut seat I (47) and a screw nut I (48), the guide rail seat I (41) is fixed on the base (1), a pair of guide rails I (42) are arranged on the guide rail seat I (41) in parallel along a first direction, namely a Y-axis direction, a ball screw I (43) which is parallel to the guide rails I (42) and is rotatably installed on the guide rail seat I (41) is arranged between the guide rails I (42), the ball screw I (43) is connected with the stepping motor I (44) through the coupler I (45), the guide rail sliding block I (46) is arranged on the guide rails I (42) in a sliding mode, and a second direction driving assembly (5) is installed on the guide rail sliding block I (46), a nut seat I (47) is arranged below the second direction driving assembly (5) and corresponds to the position of the ball screw I (43), a screw nut I (48) matched with the ball screw I (43) is arranged in the nut seat I (47), and the stepping motor I (44) is arranged on the guide rail seat I (41); the second direction driving assembly (5) comprises a guide rail seat II (51), a guide rail II (52), a ball screw II (53), a stepping motor II (54), a coupler II (55), a guide rail slider II (56), a nut seat II (57) and a screw nut II (58), a pair of guide rails II (52) are arranged on the guide rail seat II (51) in parallel along a second direction, namely the X-axis direction, a ball screw II (53) which is parallel to the guide rails II (52) and is rotatably installed on the guide rail seat II (51) is arranged between the guide rails II (52), and the ball screw II (53) is connected with the stepping motor II (54) through the coupler II (55); a guide rail sliding block II (56) is arranged on the pair of guide rails II (52) in a sliding manner, an operating platform (2) is installed on the guide rail sliding block II (56), a nut seat II (57) is installed below the operating platform (2) and corresponds to the position of the ball screw II (53), and a screw nut II (58) matched with the ball screw II (53) is installed in the nut seat II (57); the stepping motor II (54) is arranged on the guide rail seat II (51); the third direction driving assembly (6) comprises a guide rail seat III (61), a guide rail III (62), a ball screw III (63), a stepping motor III (64), a coupler III (65), a guide rail sliding block III (66), a nut seat III (67) and a screw nut III (68), one side surface of the guide rail seat III (61) is installed on the strut (3), a pair of guide rails III (62) are arranged on the other side surface in parallel along the third direction, namely the Z-axis direction, a ball screw III (63) which is parallel to the guide rails III (62) and is rotatably installed on the guide rail seat III (61) is arranged between the guide rails III (62), the ball screw III (63) is connected with the stepping motor III (64) through the coupler III (65), the guide rail sliding block III (66) is arranged on the guide rails III (62) in a sliding way, and a welding assembly (7) is installed on the guide rail sliding block III (66), nut seat III (67) are installed to the position that corresponds ball III (63) of welding subassembly (7), install in nut seat III (67) with ball III (63) complex screw nut III (68), step motor III (64) install on guide rail seat III (61).

2. A numerical control welding machine according to claim 1, characterized in that each of said pair of guides I (42) is provided with at least two guide sliders I (46).

3. A numerical control welding machine according to claim 1, characterized in that each of said pair of guides II (52) is provided with at least two guide sliders II (56).

4. A numerical control welding machine according to claim 1, characterized in that each of said pair of guides III (62) is provided with at least two guide sliders III (66).

5. A numerical control welding machine according to claim 1, characterized in that the welding assembly (7) comprises a mounting platform (71), a welding head (72) and a mounting plate (73), one side surface of the mounting platform (71) is connected with the third direction driving assembly (6), the other side surface is fixed with the mounting plate (73), and the welding head (72) is mounted on the mounting plate (73) towards the operation platform (2).

6. A numerical control welding machine according to claim 5, characterized in that said detecting assembly (8) comprises a camera (81), said camera (81) being mounted on a mounting platform (71).

7. The numerical control welding machine according to claim 6, characterized in that a rotary cylinder (74) is additionally arranged between the mounting platform (71) and the mounting plate (73), the rotary cylinder (74) is provided with a turnover disc (741) capable of rotating along an x axis or a y axis, the mounting plate (73) is mounted on the turnover disc (741), a welding head (72) is mounted on one side surface of the mounting plate (73), a camera (81) is mounted on the other side surface of the mounting plate, and the welding head (72) and the camera (81) can be turned over by controlling the rotary cylinder (74).