CN114654047A - Numerical control short arc machining monitoring device and monitoring method thereof - Google Patents
Numerical control short arc machining monitoring device and monitoring method thereof Download PDFInfo
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- CN114654047A CN114654047A CN202210516070.7A CN202210516070A CN114654047A CN 114654047 A CN114654047 A CN 114654047A CN 202210516070 A CN202210516070 A CN 202210516070A CN 114654047 A CN114654047 A CN 114654047A
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- 238000003754 machining Methods 0.000 title claims abstract description 27
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012544 monitoring process Methods 0.000 title claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000010891 electric arc Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 3
- 210000003781 tooth socket Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
Abstract
The invention discloses a numerical control short arc machining monitoring device and a monitoring method thereof, relating to the technical field of short arc machining and comprising a base and a vertical plate fixedly connected to the surface of the base; one end of the vertical plate is symmetrically and fixedly connected with a first connecting plate and a second connecting plate, a high-temperature thermal imager is connected between the first connecting plate and the second connecting plate through an adjusting mechanism, and the thermal imager is provided with a CCD module; the surface of the base is fixedly connected with a transparent baffle which is right opposite to the high-temperature thermal imager; the surface of the base is provided with a cleaning mechanism; a placing plate is fixedly connected to one end, far away from the first connecting plate and the second connecting plate, of the vertical plate, a display is mounted on the surface of the placing plate, and a display screen is mounted on the surface of the front end of the display; the surface of the front end of the display is provided with a contrast mechanism; the method is more accurate in judging the size of the workpiece molten pool, so that the influence on the processing efficiency caused by the error between the final molten pool size and the actual requirement is avoided.
Description
Technical Field
The invention relates to the technical field of short arc machining, in particular to a numerical control short arc machining monitoring device and a monitoring method thereof.
Background
Short arc machining is an efficient discharge machining method, and the arc and instantaneous high-temperature corrosion material generated by discharge between a tool and a workpiece are utilized, so that the method is not limited by the strength and hardness of the workpiece material, and an efficient and feasible means is provided for machining large-size parts made of difficult-to-cut materials. At present, the short arc processing technology is applied to processing aeroengine honeycomb pieces, and the high-efficiency low-stress processing of the honeycomb piece structure is realized; because the surface of the workpiece can form a molten pool with high energy density during short arc processing, and because the surface of the workpiece can generate strong light or sparks during short arc processing, people cannot observe the size of the molten pool by naked eyes, and judge the size of the molten pool by the sputtering degree of sparks during processing, so that the energy of discharge cannot be controlled according to the size of the molten pool during processing, the processing efficiency can be influenced by the small molten pool, and the surface quality of the workpiece can be reduced by the overlarge molten pool, and certain error exists between the surface quality of the workpiece and the actual processing requirement, thereby influencing the processing performance of short arc processing;
therefore, a numerical control short arc machining monitoring device and a monitoring method thereof are provided.
Disclosure of Invention
The invention aims to provide a numerical control short arc machining monitoring device and a monitoring method thereof, which aim to solve the problems that in the background technology, a molten pool is formed on the surface of a workpiece during short arc machining, strong light or sparks are generated on the surface of the workpiece during short arc machining, people cannot observe the size of the molten pool by naked eyes, and the size of the molten pool is judged by the sputtering degree of the sparks during machining, so that the energy of discharge cannot be controlled according to the size of the molten pool during machining, the machining efficiency is influenced by the small molten pool, the surface quality of the workpiece is reduced by the overlarge molten pool, and certain errors exist between the large molten pool and the actual machining requirement, so that the machining performance of the short arc machining is influenced.
In order to achieve the purpose, the invention provides the following technical scheme:
a numerical control short arc processing monitoring device comprises a base and a vertical plate fixedly connected to the surface of the base; one end of the vertical plate is symmetrically and fixedly connected with a first connecting plate and a second connecting plate, and a high-temperature thermal imager is connected between the first connecting plate and the second connecting plate through an adjusting mechanism; the surface of the base is fixedly connected with a transparent baffle which is right opposite to the high-temperature thermal imager; the surface of the base is provided with a cleaning mechanism; a placing plate is fixedly connected to one end, far away from the first connecting plate and the second connecting plate, of the vertical plate, a display is mounted on the surface of the placing plate, and a display screen is mounted on the surface of the front end of the display; and a contrast mechanism is arranged on the surface of the front end of the display.
As a further scheme of the invention, the high-temperature thermal imager is electrically connected with the display; a shooting module and a sending module are arranged in the high-temperature thermal imager; the sending module is connected with an external printer; the transparency changing module is arranged in the external printer.
As a further scheme of the invention, the adjusting mechanism comprises an adjusting rod, and the adjusting rod movably penetrates through the first connecting plate and is rotatably connected with the outer wall of one end, close to the first connecting plate, of the second connecting plate; and one end of the adjusting rod, which is far away from the second connecting plate, is fixedly connected with a rotating shaft.
As a further scheme of the invention, the outer wall of the adjusting rod is in threaded connection with a fixing ring which is abutted against the first connecting plate.
As a further scheme of the invention, the cleaning mechanism comprises a vertical bar fixedly connected to the surface of the base, one end of the vertical bar is provided with a sliding groove, and a sliding block is connected in the sliding groove in a sliding manner; the sliding block is fixedly connected with a moving plate.
As a further scheme of the invention, one end of the moving plate is fixedly connected with a connecting strip, and one end of the connecting strip, far away from the moving plate, is fixedly connected with a cleaning strip which is abutted with the transparent baffle; the cleaning strips and the connecting strips are perpendicular to each other.
As a further scheme of the invention, one end of the moving plate, which is far away from the connecting strip, is provided with a tooth socket, and the tooth socket is meshed with a gear; the gear is rotatably connected to the outer wall of the adjusting rod.
As a further scheme of the invention, the comparison mechanism comprises four L-shaped limiting strips, and the four L-shaped limiting strips are respectively fixedly connected to the front end surface of the display and are arranged at four corners of the display; and contrast photos covered by the display screen are arranged in the four L-shaped limiting strips.
As a further scheme of the invention, two L-shaped positioning strips are arranged on the front end surface of the display, and the two L-shaped positioning strips are symmetrically and fixedly connected to the front end surface of the display relative to the display screen; a fixed rod is movably arranged on the L-shaped positioning strip in a penetrating manner, one end of the fixed rod is fixedly connected with an auxiliary plate, and the other end of the fixed rod is fixedly connected with a fixed plate which is abutted against the contrast photo; a compression spring is arranged on the outer wall of the fixed rod, one end of the compression spring is fixedly connected with the auxiliary plate, and the other end of the compression spring is fixedly connected with the L-shaped positioning strip; and one end of the auxiliary plate, which is far away from the fixed rod, is fixedly connected with a brace.
A monitoring method of a numerical control short arc machining monitoring device comprises the following specific steps:
the method comprises the following steps: firstly, the base is required to be moved to a designated area, the fixing ring can be rotated at the moment to enable the fixing ring to be in non-contact with the first connecting plate, and the angle of the high-temperature thermal imager can be moved at the moment, so that the working angle of the high-temperature thermal imager can meet the actual requirement;
step two: secondly, starting a power supply of the whole equipment, wherein a shooting module arranged in the high-temperature thermal imager can shoot a contrast photo of a workpiece in advance, the contrast photo is sent to an external printer through a sending module, the external printer prints the contrast photo by utilizing a transparency changing module and performs transparency processing, after the contrast photo is processed, a fixed rod and a fixed plate are pulled by a brace, after the fixed plate and the surface of the display screen have a certain distance, the contrast photo is placed on the surface of the display screen, the contrast photo is positioned among four L-shaped limiting strips, the brace is released, the fixed rod is driven under the elastic action of a compression spring, the fixed plate moves on the L-shaped positioning strips, and after the fixed plate is abutted against the contrast photo, the contrast photo can be fixed;
step three: at the moment, the workpiece is processed by matching with the electric arc, the high-temperature thermal imager transmits the processing image and the temperature information of the workpiece into the display and displays the processing image and the temperature information through the display screen, the temperature of a molten pool for processing the workpiece is highest, the image displayed on the display screen is contrasted, the color of the molten pool of the workpiece is deepest, the outline of the molten pool can be clearly seen, and finally the contrasted picture can be compared with the image on the display screen, so that the size of the molten pool can be judged and monitored;
step four: and finally, after the workpiece is processed, the gear can be rotated, the gear is matched with the tooth grooves to drive the movable plate to move on the vertical bars, and the cleaning bars can be driven to clean the surface of the transparent baffle when the movable plate moves.
Compared with the prior art, the invention has the beneficial effects that:
the invention is characterized in that a shooting module arranged in a high-temperature thermal imager shoots a contrast photo of a workpiece in advance, the contrast photo is sent to an external printer through a sending module, the external printer prints the contrast photo by using a transparency changing module and performs transparency processing, after the contrast photo is processed, the contrast photo is placed on the surface of a display screen, the high-temperature thermal imager transmits a processing image and temperature information of the workpiece to a display and displays the processing image and the temperature information through the display screen, the temperature of a molten pool for processing the workpiece is highest, the image displayed on the display screen is contrasted, the color of the molten pool of the workpiece is deepest, so that the outline of the molten pool can be clearly seen, and finally the contrast photo and the image on the display screen can be compared, thereby achieving the purpose of judging and monitoring the size of the molten pool, compared with the prior art, the invention is more accurate in the judgment of the size of the molten pool of the workpiece, thereby avoiding the error between the size of the final molten pool and the actual requirement and improving the processing efficiency of the workpiece.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic view of the tooth slot structure of the present invention;
FIG. 5 is a schematic view of the structure of the sliding slot and the sliding block in the present invention;
fig. 6 is a schematic view of a display screen structure according to the present invention.
In the figure: 101. a base; 102. a vertical plate; 103. a first connecting plate; 104. a second connecting plate; 105. a high temperature thermal imager; 106. a transparent baffle; 107. placing the plate; 108. a display; 109. a display screen; 200. an adjustment mechanism; 201. adjusting a rod; 202. a rotating shaft; 203. a fixing ring; 300. a comparison mechanism; 301. an L-shaped limiting strip; 302. comparing the photos; 303. an L-shaped positioning strip; 304. fixing the rod; 305. an auxiliary plate; 306. bracing; 307. a compression spring; 308. a fixing plate; 400. a cleaning mechanism; 401. vertical bars; 402. a chute; 403. a slider; 404. moving the plate; 405. a connecting strip; 406. cleaning the strips; 407. a tooth socket; 408. a gear.
Detailed Description
Example 1:
referring to fig. 1-3 and 6, the present invention provides a technical solution: a numerical control short arc processing monitoring device comprises a base 101 and a vertical plate 102 fixedly connected to the surface of the base 101; one end of the vertical plate 102 is symmetrically and fixedly connected with a first connecting plate 103 and a second connecting plate 104, and a high-temperature thermal imager 105 is connected between the first connecting plate 103 and the second connecting plate 104 through an adjusting mechanism 200; the high-temperature thermal imager 105 is electrically connected with the display 108; a shooting module and a sending module are arranged in the high-temperature thermal imager 105; the sending module is connected with an external printer; a transparency changing module is arranged in the external printer, and the surface of the base 101 is fixedly connected with a transparent baffle 106 which is right opposite to the high-temperature thermal imager 105; a placing plate 107 is fixedly connected to one end, far away from the first connecting plate 103 and the second connecting plate 104, of the vertical plate 102, a display 108 is installed on the surface of the placing plate 107, and a display screen 109 is installed on the front end surface of the display 108; the front end surface of the display 108 is provided with a contrast mechanism 300, the contrast mechanism 300 comprises four L-shaped limiting strips 301, and the four L-shaped limiting strips 301 are respectively fixedly connected to the front end surface of the display 108 and are arranged at four corners of the display 108; a contrast photo 302 covered by the display screen 109 is arranged in the four L-shaped limiting strips 301, two L-shaped positioning strips 303 are arranged on the front end surface of the display 108, and the two L-shaped positioning strips 303 are symmetrically and fixedly connected to the front end surface of the display 108 relative to the display screen 109; a fixing rod 304 is movably arranged on the L-shaped positioning strip 303 in a penetrating manner, one end of the fixing rod 304 is fixedly connected with an auxiliary plate 305, and the other end of the fixing rod 304 is fixedly connected with a fixing plate 308 which is abutted against the contrast picture 302; a compression spring 307 is arranged on the outer wall of the fixed rod 304, one end of the compression spring 307 is fixedly connected with the auxiliary plate 305, and the other end of the compression spring 307 is fixedly connected with the L-shaped positioning strip 303; a brace 306 is fixedly connected to an end of the auxiliary plate 305 remote from the fixing rod 304.
Specifically, a shooting module arranged in the high-temperature thermal imager 105 can shoot a contrast photo 302 of a workpiece in advance, when attention is needed, a marker pen can be used for marking a preset molten pool area on the workpiece before the preset molten pool area is marked, the contrast photo 302 is sent to an external printer through a sending module, the external printer prints the contrast photo 302 through a transparency changing module and performs transparency processing, after the contrast photo 302 is processed, the contrast photo 302 is placed on the surface of the display screen 109, the high-temperature thermal imager 105 transmits a processed image and temperature information of the workpiece to the display 108 and displays the processed image and temperature information through the display screen 109, the temperature of the molten pool for processing the workpiece is the highest, the image displayed on the display screen 109 is compared, the color of the molten pool of the workpiece is the deepest, the outline of the molten pool can be clearly seen, and finally the contrast photo 302 and the image on the display screen 109 can be compared, therefore, the size of the molten pool is judged and monitored, and compared with the prior art, the method is more accurate in judging the size of the molten pool of the workpiece, so that the error between the size of the molten pool and the actual requirement is avoided, and the processing efficiency of the workpiece is improved.
Example 2:
referring to fig. 1-3, the present invention provides a technical solution: a numerical control short arc processing monitoring device, an adjusting mechanism 200 comprises an adjusting rod 201, the adjusting rod 201 movably penetrates through a first connecting plate 103 and is rotatably connected with the outer wall of one end, close to the first connecting plate 103, of a second connecting plate 104; one end of the adjusting rod 201 far away from the second connecting plate 104 is fixedly connected with a rotating shaft 202, and the outer wall of the adjusting rod 201 is in threaded connection with a fixing ring 203 which is abutted against the first connecting plate 103.
Specifically, by rotating the fixing ring 203, the fixing ring 203 is in non-contact with the first connecting plate 103, and the angle of the high-temperature thermal imager 105 can be moved at this time, so that the working angle of the high-temperature thermal imager 105 can meet the actual requirement, and after the angle adjustment of the high-temperature thermal imager 105 is completed, the fixing ring 203 is rotated again, so that the fixing ring 203 is abutted against the first connecting plate 103, so that the high-temperature thermal imager 105 can be fixed, compared with the prior art, the high-temperature thermal imager 105 in the invention can be adjusted at any time according to the actual requirement, so that the applicability of the high-temperature thermal imager 105 is improved.
Example 3:
referring to fig. 1 and 3-5, the present invention provides a technical solution: a numerical control short arc processing monitoring device, a cleaning mechanism 400 is arranged on the surface of a base 101, the cleaning mechanism 400 comprises a vertical bar 401 fixedly connected to the surface of the base 101, one end of the vertical bar 401 is provided with a sliding groove 402, and a sliding block 403 is slidably connected in the sliding groove 402; a moving plate 404 is fixedly connected to the sliding block 403, a connecting strip 405 is fixedly connected to one end of the moving plate 404, and a cleaning strip 406 which is abutted to the transparent baffle 106 is fixedly connected to one end, far away from the moving plate 404, of the connecting strip 405; the cleaning strip 406 and the connecting strip 405 are arranged vertically, one end of the moving plate 404, which is far away from the connecting strip 405, is provided with a tooth groove 407, and the tooth groove 407 is engaged with a gear 408; the gear 408 is rotatably coupled to an outer wall of the adjustment lever 201.
Specifically, through rotatory gear 408, gear 408 cooperation tooth's socket 407 drives movable plate 404 and moves on vertical bar 401, can drive clearance strip 406 when movable plate 404 moves and clear up the surface of transparency baffle 106, compares current, through clearing up the surface of transparency baffle 106, can prevent that the spark from causing the pollution to transparency baffle 106, avoids high temperature thermal imaging appearance 105's work efficiency to receive the influence.
The working principle is as follows: for the invention, when in use, the base 101 is firstly required to be moved to a designated area, at this time, the fixing ring 203 can be rotated to enable the fixing ring 203 to be in non-contact with the first connecting plate 103, at this time, the angle of the high-temperature thermal imager 105 can be moved, so that the working angle of the high-temperature thermal imager 105 can meet the actual requirement, after the angle of the high-temperature thermal imager 105 is adjusted, the fixing ring 203 is rotated to enable the fixing ring 203 to be abutted against the first connecting plate 103, and then the high-temperature thermal imager 105 can be fixed; then, the power supply of the whole device is started, at this time, the built-in shooting module of the high-temperature thermal imager 105 can shoot a contrast photo 302 of a workpiece in advance, and sends the contrast photo 302 to an external printer through a sending module, the external printer prints the contrast photo 302 by using a transparency changing module and performs transparency processing, after the contrast photograph 302 is processed, the fixing rod 304 and the fixing plate 308 are pulled by the pull bar 306, after the fixed plate 308 is located at a certain distance from the surface of the display screen 109, the contrast picture 302 is placed on the surface of the display screen 109, and the contrast picture 302 is positioned between the four L-shaped limiting strips 301, the pull strip 306 is released, the fixing rod 304 and the fixing plate 308 are driven to move on the L-shaped positioning strip 303 under the elastic action of the compression spring 307, and the contrast picture 302 can be fixed after the fixing plate 308 is abutted to the contrast picture 302; at the moment, the workpiece is processed by matching with the electric arc, at the moment, the high-temperature thermal imager 105 transmits the processing image and the temperature information of the workpiece into the display 108 and displays the processing image and the temperature information through the display screen 109, the temperature of a molten pool for processing the workpiece is highest, the image displayed on the display screen 109 is compared, the color of the molten pool of the workpiece is deepest, the outline of the molten pool can be clearly seen, and finally the comparison picture 302 can be compared with the image on the display screen 109, so that the size of the molten pool can be judged and monitored; finally, after the workpiece is processed, the gear 408 can be rotated, the gear 408 cooperates with the tooth slot 407 to drive the moving plate 404 to move on the vertical bar 401, and when the moving plate 404 moves, the cleaning bar 406 is driven to clean the surface of the transparent baffle 106.
Claims (10)
1. A numerical control short arc processing monitoring device is characterized by comprising:
the base comprises a base (101) and a vertical plate (102) fixedly connected to the surface of the base (101);
one end of the vertical plate (102) is symmetrically and fixedly connected with a first connecting plate (103) and a second connecting plate (104), and a high-temperature thermal imager (105) is connected between the first connecting plate (103) and the second connecting plate (104) through an adjusting mechanism (200);
the surface of the base (101) is fixedly connected with a transparent baffle (106) which is right opposite to the high-temperature thermal imager (105);
the surface of the base (101) is provided with a cleaning mechanism (400);
a placing plate (107) is fixedly connected to one end, away from the first connecting plate (103) and the second connecting plate (104), of the vertical plate (102), a display (108) is installed on the surface of the placing plate (107), and a display screen (109) is installed on the surface of the front end of the display (108);
the front end surface of the display (108) is provided with a contrast mechanism (300).
2. The numerical control short arc process monitoring device according to claim 1, wherein the high temperature thermal imager (105) is electrically connected to a display (108);
a shooting module and a sending module are arranged in the high-temperature thermal imager (105);
the sending module is connected with an external printer;
the external printer is internally provided with a transparency changing module.
3. The numerical control short arc machining monitoring device according to claim 1, wherein the adjusting mechanism (200) comprises an adjusting rod (201), and the adjusting rod (201) is movably arranged through the first connecting plate (103) and is rotatably connected with the outer wall of one end, close to the first connecting plate (103), of the second connecting plate (104);
one end of the adjusting rod (201) far away from the second connecting plate (104) is fixedly connected with a rotating shaft (202).
4. The numerical control short arc machining monitoring device according to claim 3, characterized in that a fixing ring (203) abutting against the first connecting plate (103) is connected to the outer wall of the adjusting rod (201) in a threaded manner.
5. The numerical control short arc machining monitoring device according to claim 1, wherein the cleaning mechanism (400) comprises a vertical bar (401) fixedly connected to the surface of the base (101), one end of the vertical bar (401) is provided with a sliding groove (402), and a sliding block (403) is slidably connected in the sliding groove (402);
the sliding block (403) is fixedly connected with a moving plate (404).
6. The numerical control short arc processing monitoring device according to claim 5, wherein a connecting strip (405) is fixedly connected to one end of the moving plate (404), and a cleaning strip (406) abutting against the transparent baffle (106) is fixedly connected to one end, far away from the moving plate (404), of the connecting strip (405);
the cleaning strips (406) and the connecting strips (405) are arranged perpendicular to each other.
7. The numerical control short arc machining monitoring device according to claim 6, characterized in that a tooth groove (407) is formed in one end of the moving plate (404) far away from the connecting strip (405), and the tooth groove (407) is engaged with a gear (408);
the gear (408) is rotatably connected to the outer wall of the adjusting rod (201).
8. The numerical control short arc machining monitoring device according to claim 1, wherein the comparison mechanism (300) comprises four L-shaped limiting strips (301), and the four L-shaped limiting strips (301) are respectively fixedly connected to the front end surface of the display (108) and are arranged at four corners of the display (108);
contrast photos (302) which cover the display screen (109) are arranged in the four L-shaped limiting strips (301).
9. The numerical control short arc machining monitoring device according to claim 8, characterized in that the front end surface of the display (108) is provided with two L-shaped positioning bars (303), and the two L-shaped positioning bars (303) are symmetrically and fixedly connected to the front end surface of the display (108) relative to the display screen (109);
a fixing rod (304) is movably arranged on the L-shaped positioning strip (303) in a penetrating manner, one end of the fixing rod (304) is fixedly connected with an auxiliary plate (305), and the other end of the fixing rod (304) is fixedly connected with a fixing plate (308) which is abutted against the comparison photo (302);
a compression spring (307) is arranged on the outer wall of the fixing rod (304), one end of the compression spring (307) is fixedly connected with the auxiliary plate (305), and the other end of the compression spring (307) is fixedly connected with the L-shaped positioning strip (303);
one end of the auxiliary plate (305) far away from the fixing rod (304) is fixedly connected with a brace (306).
10. A monitoring method of a numerical control short arc machining monitoring device is characterized by comprising the following specific steps:
the method comprises the following steps: firstly, the base (101) needs to be moved to a designated area, the fixing ring (203) can be rotated at the moment, the fixing ring (203) is enabled to be in non-contact with the first connecting plate (103), the angle of the high-temperature thermal imager (105) can be moved at the moment, and therefore the working angle of the high-temperature thermal imager (105) can meet the actual requirement, after the angle of the high-temperature thermal imager (105) is adjusted, the fixing ring (203) is rotated again, the fixing ring (203) is enabled to be abutted against the first connecting plate (103), and the high-temperature thermal imager (105) can be fixed;
step two: secondly, starting the power supply of the whole equipment, wherein a CCD shooting module arranged in a high-temperature thermal imager (105) can shoot a contrast photo (302) of a workpiece in advance, the contrast photo (302) is sent to an external printer through a sending module, the external printer prints the contrast photo (302) by using a transparency changing module and performs transparency processing, after the contrast photo (302) is processed, a fixed rod (304) and a fixed plate (308) are pulled through a pull rod (306), when a certain distance exists between the fixed plate (308) and the surface of a display screen (109), the contrast photo (302) is placed on the surface of the display screen (109), and the contrast photo (302) is positioned among four L-shaped limiting strips (301), then the pull rod (306) is released, the fixed rod (304) and the fixed plate (308) are driven to move on the L-shaped positioning strips (303) under the elastic action of a compression spring (307), after the fixing plate (308) is abutted against the comparison photo (302), the comparison photo (302) can be fixed;
step three: at the moment, the workpiece is processed by matching with an electric arc, at the moment, a high-temperature thermal imager (105) transmits a processing image and temperature information of the workpiece into a display (108) and displays the processing image and the temperature information through a display screen (109), the temperature of a molten pool where the workpiece is processed is highest, the image displayed on the display screen (109) is compared, the color of the molten pool of the workpiece is deepest, the outline of the molten pool can be clearly seen, and finally the comparison picture (302) and the image on the display screen (109) can be compared, so that the size of the molten pool can be judged and monitored;
step four: and finally, after the workpiece is processed, the gear (408) can be rotated, the gear (408) is matched with the tooth grooves (407) to drive the movable plate (404) to move on the vertical bars (401), and when the movable plate (404) moves, the cleaning bars (406) are driven to clean the surface of the transparent baffle (106).
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