An electric arc precision cutting device and cutting method for a ship

Abstract

The application discloses a marine electric arc precision cutting device and a cutting method, which comprises a cutting cabin. An automatic position adjusting mechanism is arranged on the inner side of the top of the cutting cabin and used for adjusting the limiting position of a workpiece. An automatic limiting detection assembly is arranged on the inner side of the bottom of the cutting cabin. The application inputs stable working current through an electric control translation assembly, drives each set of limiting sliding blocks and clamping plates to clamp the workpiece, after the clamping of the workpiece is completed, a positive metal contact plate contacts a positive contact surface of the workpiece, a power supply assembly and the electric arc precision cutting device input quantitative current to the workpiece, meanwhile, a lifting type resistance detector contacts the workpiece, collects the resistance data in the workpiece after electrification and transmits the resistance data to a control system, so as to judge whether the positive contact surface of the workpiece has an abnormal condition, and the technical effect of real-time state detection of the positive contact surface of the workpiece is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of arc cutting, more particularly to a marine arc precision cutting device and cutting method. BACKGROUND

[0002] In shipbuilding and ocean engineering, cutting of metal materials is a key process. Traditional arc cutting technology usually uses an external clamping method to connect the electrode (positive electrode) and the workpiece. However, due to the fact that some ship workpieces are exposed to the external environment for a long time, their surfaces are prone to attach rust layers or paint layers, which leads to poor contact between the electrode and the workpiece. This further leads to an abnormal increase in contact resistance, thereby directly causing the following problems:

[0003] 1. Cutting quality decreases: poor contact can lead to uneven distribution of arc energy, causing rough cutting surface, enlarged heat-affected zone, or even cutting interruption;

[0004] 2. Energy consumption increases: abnormal resistance reduces system current efficiency, requiring additional energy consumption to maintain the cutting process;

[0005] 3. Safety hazards: local overheating can cause workpiece deformation or equipment failure;

[0006] Therefore, there is an urgent need for a marine arc precision cutting device and cutting method to solve the above technical problems. SUMMARY

[0007] In order to overcome the above-mentioned defects of the prior art, the present application provides a marine arc precision cutting device and cutting method to solve the problems existing in the background art.

[0008] The present application provides the following technical solution: a marine arc precision cutting device, comprising an arc precision cutting device, the arc precision cutting device comprising a cutting cabin formed inside, the arc precision cutting device being provided with an electric control door on the front surface near the cutting cabin, and a cutting robot being installed on the inner side surface of one side of the cutting cabin, further comprising: a control system arranged inside the arc precision cutting device;

[0009] An automatic position adjusting mechanism is arranged on the inner side surface of the top of the cutting cabin for adjusting the limiting position of the workpiece, and an automatic limiting detection assembly is arranged on the inner side surface of the bottom of the cutting cabin for limiting the workpiece and assisting the control system in detecting the surface of the positive contact surface of the workpiece to determine whether there is any abnormality in the positive contact surface;

[0010] The automatic limiting detection assembly comprises a limiting plate, the inner wall of the top of the limiting plate is sequentially provided with a plurality of groups of electric control translation assemblies at equal intervals, the top of each group of the electric control translation assemblies is provided with a limiting slider, the outer surface of a group of limiting sliders is provided with a full-automatic polishing assembly for polishing the positive contact surface in an abnormal condition.

[0011] Further, the position automatic adjusting mechanism comprises an adjusting motor, the top surface of the adjusting motor is mounted on the inner side of the top of the cutting cabin, the transmission end of the adjusting motor is provided with an electric control hydraulic column, and the lifting end of the electric control hydraulic column is provided with a negative pressure adsorption device.

[0012] The inner side of each group of the limiting sliders near the middle region of the limiting plate is movably sleeved with a clamping plate.

[0013] Further, the side of each group of the clamping plates near the corresponding limiting slider is vertically provided with a spring, and the end of the spring away from the clamping plate is vertically mounted on the inner side of the limiting slider.

[0014] The outer side of a group of the clamping plates is provided with a positive metal contact plate, and one end of the positive metal contact plate is electrically connected with a power supply assembly.

[0015] The inner wall of one side of the limiting plate is provided with a detection groove.

[0016] Further, the inner side of the top of the detection groove is provided with an electric control telescopic door, and the inner side of the bottom of the detection groove is vertically provided with a lifting type resistance detector for collecting the resistance value data of the workpiece after being powered and conveying the resistance value data to a control system.

[0017] The full-automatic polishing assembly comprises an electric control lifting device.

[0018] Further, the electric control lifting device is mounted on the two sides of a group of the limiting sliders, the lifting end of the electric control lifting device is provided with a servo motor, the transmission end of the servo motor is provided with an electric control telescopic plate, the end of the electric control telescopic plate away from the servo motor is provided with an electric motor, and the transmission end of the electric motor is provided with a polishing wheel.

[0019] The side of the electric control telescopic plate near the polishing wheel is provided with an adsorption plate.

[0020] Further, the side of the adsorption plate near the polishing wheel is provided with an adsorption hole, the inside of the adsorption plate is provided with an adsorption groove, and the adsorption hole and the adsorption groove are in a gaseous mutual flow state, the upper surface of a group of the limiting sliders is provided with a foreign matter adsorption device, the output end of the foreign matter adsorption device is provided with a conveying pipe, and the end of the conveying pipe away from the foreign matter adsorption device is arranged in the adsorption groove.

[0021] The control system comprises an analysis unit and a communication module.

[0022] Further, the analysis unit simulates the simulated resistance data generated by the lifting resistance detector when the positive contact surface of the workpiece is in a normal state, integrates the simulated resistance data to form a threshold range, and compares the real-time resistance data with the threshold range. When the real-time resistance data is greater than the threshold range, it is judged that the positive contact surface of the workpiece is in an abnormal state.

[0023] A cutting method of a marine electric arc precision cutting device, applied to a marine electric arc precision cutting device, comprising the following operation steps:

[0024] Step one, the workpiece is placed on the outer surface of the limiting plate, each group of electrically controlled translation assemblies input stable working current, control each group of limiting slides and positive metal contact plates to contact the surface of the workpiece, and clamp the workpiece;

[0025] Step two, after the positive metal contact plate contacts the positive contact surface of the workpiece, input current, the lifting resistance detector contacts the surface of the workpiece, collects and transmits the internal resistance value data of the workpiece to the control system, and judges whether the positive contact surface of the workpiece is abnormal;

[0026] Step three, when the control system judges that the positive contact surface of the workpiece is in a normal state, the cutting robot inputs current to normally cut the workpiece, and if the control system judges that the positive contact surface of the workpiece is in an abnormal state, the full-automatic polishing assembly inputs stable working current to polish the positive contact surface;

[0027] Step four, after polishing the positive contact surface in an abnormal state, repeat step two to recheck the positive contact surface;

[0028] Step five: if the positive contact surface of the workpiece is in a normal state after the second recheck, the cutting robot inputs current to normally cut the workpiece, and if the control system judges that the positive contact surface of the workpiece is in an abnormal state again, the position automatic adjusting mechanism inputs current to adjust the clamping position of the workpiece;

[0029] Step six, after the position of the workpiece is adjusted, repeat steps two to three to judge the real-time situation of the positive contact surface after the position is adjusted by the control system, and if the positive contact surface after the position is adjusted is still in an abnormal state, repeat steps four to five;

[0030] Step seven, if the number of triggering times of step six exceeds three times, the control system judges that the whole workpiece is in a state that cannot be cut, and generates corresponding warning information, remotely reminds the worker through the communication module, and reaches the scene to check.

[0031] The technical effects and advantages of the present application are as follows:

[0032] 1、The present application inputs stable working current through the electric control translation assembly, drives each group of limit sliding blocks and clamping plates to clamp the workpiece, after the workpiece clamping is completed, the positive metal contact plate contacts the positive contact surface of the workpiece, the power supply assembly and the electric arc precision cutting device input quantitative current to the workpiece, at the same time, the lifting type resistance detector contacts the workpiece, collects the resistance data inside the workpiece after power-on and transmits to the control system, which is used for judging whether the positive contact surface of the workpiece exists abnormal condition, so as to achieve the technical effect of real-time state detection of the positive contact surface of the workpiece.

[0033] 2、The present application inputs stable working current through the servo motor and the electric control telescopic plate, drives the polishing wheel to rotate to the positive contact surface, the motor inputs stable working current to generate rotating force and controls the polishing wheel to be in a rotating state, under the control of the electric control lifting device, the positive contact surface of the workpiece is polished, the impurity adsorption device inputs stable working current, generates adsorbed air which is transmitted to the adsorption groove of the adsorption plate through the conveying pipe and is transmitted to the surface of the polishing wheel through the adsorption hole of the adsorption plate, and the impurities generated in the workpiece polishing process are recycled. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the overall structure schematic diagram of the present application.

[0035] Figure 2 It is the overall structure schematic diagram of the position automatic adjusting mechanism shown in the figure. Figure 1

[0036] It is the overall structure schematic diagram of the automatic limit detection assembly shown in the figure. Figure 3 Figure 1 It is the structure enlarged schematic diagram of A shown in the figure.

[0037] Figure 4 Figure 3 It is the structure enlarged schematic diagram of B shown in the figure.

[0038] Figure 5 It is the structure enlarged schematic diagram of B shown in the figure. Figure 3

[0039] It is the overall structure schematic diagram of the limit sliding block and the clamping plate shown in the figure. Figure 6 Figure 5 It is the exploded schematic diagram of the limit sliding block and the clamping plate shown in the figure.

[0040] Figure 7 Figure 6 It is the exploded schematic diagram of the limit sliding block and the clamping plate shown in the figure.

[0041] Figure 8 It is the partial structure schematic diagram of the full-automatic polishing assembly shown in the figure. Figure 6 ​​​​​

[0042] The figure is: 1, arc precision cutting device; 101, electric control door; 102, cutting robot; 2, automatic position adjusting mechanism; 201, adjusting motor; 202, electric control hydraulic column; 203, negative pressure adsorption device; 3, automatic limit detection assembly; 301, limit plate; 302, limit sliding block; 303, electric control telescopic door; 304, detection groove; 305, lifting type resistance detector; 306, electric control translation assembly; 307, positive metal contact plate; 3071, power supply assembly; 308, clamping plate; 309, spring; 4, full-automatic polishing assembly; 401, impurity adsorption device; 402, conveying pipe; 403, electric control lifting device; 404, servo motor; 405, electric control telescopic plate; 406, motor; 407, adsorption plate; 408, polishing wheel. DETAILED DESCRIPTION

[0043] The technical solutions in the application will be described clearly and completely below in combination with the drawings in the application. In addition, the forms of each structure described in the following embodiments are only examples, and the marine arc precision cutting device and cutting method involved in the application are not limited to each structure described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application.

[0044] Reference Figures 1 to 6 As shown in the figure, the application provides a marine arc precision cutting device, which comprises an arc precision cutting device 1, the arc precision cutting device 1 comprises a cutting cabin opened in the inside, the arc precision cutting device 1 is provided with an electric control door 101 on the front face close to the cutting cabin, the inside of one side of the cutting cabin is provided with a cutting robot 102, and the inside of the arc precision cutting device 1 is provided with a control system;

[0045] The inside of the top of the cutting cabin is provided with an automatic position adjusting mechanism 2 for adjusting the limiting position of the workpiece, and the inside of the bottom of the cutting cabin is provided with an automatic limit detection assembly 3 for limiting the workpiece and assisting the control system in detecting the surface of the positive contact surface of the workpiece to judge whether the positive contact surface is abnormal.

[0046] The automatic limit detection assembly 3 comprises a limit plate 301, the inner wall of the top of the limit plate 301 is sequentially and equidistantly provided with a plurality of electric control translation assemblies 306, the top of each electric control translation assembly 306 is provided with a limit sliding block 302, the outer surface of a group of limit sliding blocks 302 is provided with a full-automatic polishing assembly 4 for polishing the positive contact surface in an abnormal condition.

[0047] In the embodiment of the present application, the abnormal condition of the positive contact surface refers to that the surface of the contact surface remains insulating contaminants, such as rust or paint.

[0048] A cutting method of a marine electric arc precision cutting device, comprising the following operation steps: step one, the workpiece is placed on the outer surface of the limiting plate 301, each group of electrically controlled translation assemblies 306 inputs stable working current, controls each group of limiting slides 302 and positive metal contact plates 307 to contact the surface of the workpiece, and clamps the workpiece;

[0049] Step two, after the positive metal contact plate 307 contacts the positive contact surface of the workpiece, the lifting type resistance detector 305 contacts the surface of the workpiece, collects and transmits the internal resistance value data of the workpiece to the control system, and is used for judging whether the positive contact surface of the workpiece is abnormal or not;

[0050] Step three, when the control system judges that the positive contact surface of the workpiece is in a normal condition, the cutting robot 102 inputs current to normally cut the workpiece, and if the control system judges that the positive contact surface of the workpiece is in an abnormal condition, the full-automatic polishing assembly 4 inputs stable working current to polish the positive contact surface;

[0051] Step four, after the positive contact surface in the abnormal condition is polished, step two is repeated to recheck the positive contact surface;

[0052] Step five: if the positive contact surface of the workpiece is in a normal condition after the second recheck, the cutting robot 102 inputs current to normally cut the workpiece, and if the control system judges again that the positive contact surface of the workpiece is in an abnormal condition, the position automatic adjusting mechanism 2 inputs current to adjust the clamping position of the workpiece;

[0053] Step six, after the position of the workpiece is adjusted, steps two to three are repeated to judge the real-time condition of the positive contact surface after the position is adjusted by the control system, and if the positive contact surface after the position is adjusted is still in an abnormal condition, steps four to five are repeated;

[0054] Step seven, if the number of triggering in step six exceeds three times, the control system judges that the whole workpiece is in a state of being unable to cut, generates corresponding warning information, remotely reminds the worker through the communication module, and reaches the scene to check.

[0055] Reference Figures 1 to 2As shown, the present application provides a marine electric arc precision cutting device, the position automatic adjusting mechanism 2 comprises an adjusting motor 201, the top surface of the adjusting motor 201 is mounted on the inner side surface of the top of the cutting cabin, the transmission end of the adjusting motor 201 is provided with an electric control hydraulic column 202, and the lifting end of the electric control hydraulic column 202 is provided with a negative pressure adsorption device 203.

[0056] In the embodiment of the present application, the specific work flow of this part of the application is that the control system judges that the workpiece needs to be position adjusted, the automatic limiting detection assembly 3 stops the clamping work of the workpiece, the electric control hydraulic column 202 inputs stable working current, the negative pressure adsorption device 203 is controlled to contact the surface of the workpiece for adsorption work, and the adjusting motor 201 controls the electric control hydraulic column 202 to rotate for real-time adjustment of the position of the workpiece.

[0057] Referring to Figure 1 and Figures 3 to 7 As shown, the present application provides a marine electric arc precision cutting device, each group of the limiting sliding block 302 is movably sleeved with a clamping plate 308 on the inner side surface close to the middle region position of the limiting plate 301, each group of the clamping plate 308 is vertically provided with a spring 309 on the side surface close to the corresponding limiting sliding block 302, and one end of the spring 309 away from the clamping plate 308 is vertically mounted on the inner side surface of the limiting sliding block 302.

[0058] One end of the positive metal contact plate 307 is electrically connected with a power supply assembly 3071.

[0059] The inner wall of one side of the limiting plate 301 is provided with a detection groove 304, the inner side surface of the top of the detection groove 304 is provided with an electric control telescopic door 303, and the inner side surface of the bottom of the detection groove 304 is vertically provided with a lifting type resistance detector 305 for collecting the resistance data inside the workpiece after power-on and conveying to the control system.

[0060] In the embodiment of the present application, the specific work flow of this part of the application is that the workpiece moves to the outer surface of the limiting plate 301, the electric control translation assembly 306 inputs stable working current to drive each group of the limiting sliding block 302 and the clamping plate 308 to clamp the workpiece, after the clamping of the workpiece is completed, the positive metal contact plate 307 contacts the positive contact surface of the workpiece, the power supply assembly 3071 and the electric arc precision cutting device 1 input quantitative current to the workpiece, and at the same time, the lifting type resistance detector 305 contacts the workpiece, collects the resistance data inside the workpiece after power-on and conveys to the control system, so as to judge whether the positive contact surface of the workpiece has an abnormal condition, and achieve the technical effect of real-time state detection of the positive contact surface of the workpiece.

[0061] Referring toFigure 1 , Figure 3 , Figures 5 to 6 as well as Figure 8 As shown, the present invention provides a marine electric arc precision cutting device. The fully automatic grinding component 4 includes an electrically controlled lifting device 403, which is installed on both sides of a set of limit sliders 302. A servo motor 404 is installed at the lifting end of the electrically controlled lifting device 403, an electrically controlled telescopic plate 405 is installed at the transmission end of the servo motor 404, and an electric motor 406 is installed at the end of the electrically controlled telescopic plate 405 away from the servo motor 404. A grinding wheel 408 is installed at the transmission end of the electric motor 406.

[0062] An adsorption plate 407 is installed on the side of the electrically controlled telescopic plate 405 near the grinding wheel 408. The adsorption plate 407 has adsorption holes on its side near the grinding wheel 408. An adsorption groove is formed inside the adsorption plate 407, and the adsorption holes and the adsorption groove are in a state of mutual gas flow. An impurity adsorption device 401 is installed on the upper surface of a set of limiting sliders 302. A conveying pipe 402 is installed at the output end of the impurity adsorption device 401. The end of the conveying pipe 402 away from the impurity adsorption device 401 is set in the adsorption groove.

[0063] In this embodiment of the application, the specific workflow of this part of the application embodiment is as follows: When the control system determines that there is an abnormality on the positive electrode contact surface of the workpiece, the servo motor 404 and the electronically controlled telescopic plate 405 input a stable working current to drive the grinding wheel 408 to rotate to the positive electrode contact surface. The motor 406 inputs a stable working current to generate rotational force and control the grinding wheel 408 to be in a rotating state. Under the control of the electronically controlled lifting device 403, the positive electrode contact surface of the workpiece is ground. The impurity adsorption device 401 inputs a stable working current to generate adsorption air, which is transmitted through the conveying pipe 402 to the adsorption groove of the adsorption plate 407 and then transmitted through the adsorption holes of the adsorption plate 407 to the surface of the grinding wheel 408 to recover the impurities generated during the workpiece grinding process.

[0064] Reference Figures 1 to 8 As shown, the present invention provides a marine electric arc precision cutting device, the control system of which includes an analysis unit and a communication module;

[0065] The analysis unit simulates the simulated resistance data generated by the lifting resistance detector 305 when the positive electrode contact surface of the workpiece is in a normal condition, and integrates the simulated resistance data to form a threshold range. The analysis unit compares the real-time resistance data with the threshold range. When the real-time resistance data is greater than the threshold range, it is determined that there is an abnormality in the positive electrode contact surface of the workpiece.

[0066] In the embodiments of the present application, when the resistance data is less than the threshold range, it is judged that the workpiece is in an abnormal processing condition. The abnormal processing condition refers to the deformation phenomenon on the surface of the workpiece, which causes the abnormal increase of the positive contact surface; the accumulation of metal chips on the cutting platform forms an additional current branch between the workpiece and the rack; the lifting resistance detector 305 is damaged; the above-mentioned conditions cannot be solved by polishing the positive contact surface of the workpiece by the full-automatic polishing assembly 4, therefore the control system directly controls the position automatic adjusting mechanism 2 to adjust the clamping position of the workpiece. If the clamping position of the workpiece is adjusted more than three times and the real-time resistance data is still less than the threshold range, the control system judges that the overall workpiece is in a state of being unable to cut, and generates corresponding warning information to remotely remind the staff through the communication module to arrive on site to check.

[0067] In the embodiments of the present application, the specific working process of part of the embodiments is as follows:

[0068] Workpiece clamping and detection process: the workpiece moves to the outer surface of the limiting plate 301, the electric control translation assembly 306 inputs stable working current to drive each set of limiting sliding block 302 and clamping plate 308 to clamp the workpiece. After the workpiece is clamped, the positive metal contact plate 307 contacts the positive contact surface of the workpiece, the power supply assembly 3071 and the electric arc precision cutting device 1 input a certain amount of current to the workpiece, and at the same time the lifting resistance detector 305 contacts the workpiece and collects the resistance data inside the workpiece after being powered on and transmits it to the control system, which is used to judge whether the positive contact surface of the workpiece exists abnormal condition, so as to achieve the technical effect of real-time state detection of the positive contact surface of the workpiece.

[0069] Workpiece automatic polishing process: when the control system judges that the positive contact surface of the workpiece exists abnormal condition, the servo motor 404 and the electric control telescopic plate 405 input stable working current to drive the polishing wheel 408 to rotate to the positive contact surface, the electric motor 406 inputs stable working current to generate rotating force and control the polishing wheel 408 to be in rotating state, and under the control of the electric control lifting device 403, the polishing wheel 408 is used for polishing the positive contact surface of the workpiece. The impurity adsorption device 401 inputs stable working current to generate adsorption air which is transmitted to the adsorption groove of the adsorption plate 407 through the conveying pipe 402, and is transmitted to the surface of the polishing wheel 408 through the adsorption hole of the adsorption plate 407, and the impurities generated in the polishing process of the workpiece are recycled.

[0070] Finally should be explained a few points are: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for indicating the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0071] Second: the present application discloses the embodiment in the drawing, only relates to the structure involved in the present application, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0072] Finally: the above only for the preferred embodiment of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A marine electric arc precision cutting device, comprising an electric arc precision cutting device (1), the electric arc precision cutting device (1) comprising a cutting cabin opened inside, the electric arc precision cutting device (1) being provided with an electric control door (101) on the front face close to the cutting cabin, and a cutting robot (102) being installed on the inner side face of one side of the cutting cabin, characterized in that, Also include: The inside of the arc precision cutting device (1) is provided with a control system; The inner side of the top of the cutting cabin is provided with a position automatic adjusting mechanism (2) for adjusting the workpiece clamping position, and the inner side of the bottom of the cutting cabin is provided with an automatic limiting detection assembly (3) for limiting the workpiece and assisting the control system to detect the surface of the positive contact surface of the workpiece to judge whether the positive contact surface is abnormal; The automatic limiting detection assembly (3) comprises a limiting plate (301), and the inner wall of the top of the limiting plate (301) is sequentially and equidistantly provided with a plurality of electric control translation assemblies (306). Each electric control translation assembly (306) is provided with a limiting sliding block (302) on the top thereof. An automatic polishing assembly (4) is arranged on the outer surface of a group of limiting sliding blocks (302), which is used for polishing the positive contact surface in abnormal condition; Each group of limiting sliding blocks (302) is movably sleeved with a clamping plate (308) on the inner side near the middle region of the limiting plate (301); Each group of clamping plates (308) is vertically installed with a spring (309) on the side near the corresponding limiting sliding block (302), and one end of the spring (309) away from the clamping plate (308) is vertically installed on the inner side of the limiting sliding block (302); The outer side of a group of clamping plates (308) is provided with a positive metal contact plate (307), and one end of the positive metal contact plate (307) is electrically connected with a power supply assembly (3071); A detection groove (304) is formed in the inner wall of one side of the limiting plate (301); The inner side of the top of the detection groove (304) is provided with an electric control telescopic door (303), and the inner side of the bottom of the detection groove (304) is vertically installed with a lifting type resistance detector (305) for collecting the resistance value data of the workpiece after power on and conveying to the control system; The automatic polishing assembly (4) comprises an electric control lifting device (403); The electric control lifting device (403) is installed on both sides of a group of limiting sliding blocks (302), a servo motor (404) is installed on the lifting end of the electric control lifting device (403), an electric control telescopic plate (405) is installed on the transmission end of the servo motor (404), an electric motor (406) is installed on one end of the electric control telescopic plate (405) away from the servo motor (404), and a polishing wheel (408) is installed on the transmission end of the electric motor (406); The number of electric control telescopic plates (405) is two, and the opposite faces of the two electric control telescopic plates (405) near the polishing wheel (408) are provided with suction plates (407).

2. An electric arc precision cutting device for a ship according to claim 1, characterized in that: The position automatic adjusting mechanism (2) comprises an adjusting motor (201), the top surface of the adjusting motor (201) is installed on the inner side of the top of the cutting cabin, the transmission end of the adjusting motor (201) is provided with an electric control hydraulic column (202), and the lifting end of the electric control hydraulic column (202) is provided with a negative pressure suction device (203).

3. An electric arc precision cutting device for a ship according to claim 2, characterized in that: The adsorption plate (407) is provided with adsorption holes on the side close to the polishing wheel (408), the inside of the adsorption plate (407) is provided with an adsorption groove, and the adsorption holes and the adsorption groove are in a gaseous mutual flow state, the upper surface of a set of limit sliding blocks (302) is provided with an impurity adsorption device (401), the output end of the impurity adsorption device (401) is provided with a conveying pipe (402), and the conveying pipe (402) is arranged in the adsorption groove at the end away from the impurity adsorption device (401).

4. An electric arc precision cutting device for a ship according to claim 3, characterized in that: The control system comprises an analysis unit and a communication module; When the positive contact surface of the workpiece is in a normal state, the analysis unit simulates the analog resistance data generated by the lifting resistance detector (305), integrates the analog resistance data to form a threshold range, and compares the real-time resistance data with the threshold range.

5. A cutting method of a marine electric arc precision cutting device, characterized by, The ship electric arc precision cutting device of claim 4 comprises the following operation steps: Step one: the workpiece is placed on the outer surface of the limit plate (301), each group of electric control translation assemblies (306) inputs stable working current, controls each group of limit sliding blocks (302) and positive metal contact plates (307) to contact the surface of the workpiece, and clamps the workpiece; Step two: after the positive metal contact plate (307) contacts the positive contact surface of the workpiece, the lifting resistance detector (305) contacts the surface of the workpiece, collects and transmits the internal resistance value data of the workpiece to the control system, and judges whether the positive contact surface of the workpiece is abnormal; Step three: when the positive contact surface of the workpiece is in a normal state, the cutting robot (102) inputs current to normally cut the workpiece, and if the control system judges that the positive contact surface of the workpiece is in an abnormal state, the full-automatic polishing assembly (4) inputs stable working current to polish the positive contact surface; Step four: after the positive contact surface in the abnormal state is polished, step two is repeated to recheck the positive contact surface; Step five: if the positive contact surface of the workpiece is in a normal state after the second recheck, the cutting robot (102) inputs current to normally cut the workpiece, and if the control system judges that the positive contact surface of the workpiece is in an abnormal state again, the position automatic adjusting mechanism (2) inputs current to adjust the clamping position of the workpiece; Step six: after the position of the workpiece is adjusted, steps two to three are repeated to judge the real-time state of the positive contact surface after the position is adjusted, and if the positive contact surface after the position is adjusted is still in an abnormal state, steps four to five are repeated; Step seven: if the number of triggering times of step six exceeds three times, the control system judges that the whole workpiece is in a state that cannot be cut, generates corresponding warning information, remotely reminds the worker through the communication module, and reaches the scene to check.

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