CN110548975A - Control method for automatic replacement of electrode cap of welding gun - Google Patents
Control method for automatic replacement of electrode cap of welding gun Download PDFInfo
- Publication number
- CN110548975A CN110548975A CN201810540392.9A CN201810540392A CN110548975A CN 110548975 A CN110548975 A CN 110548975A CN 201810540392 A CN201810540392 A CN 201810540392A CN 110548975 A CN110548975 A CN 110548975A
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- Prior art keywords
- electrode cap
- grinding
- welding gun
- control method
- replacing
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention relates to a control method for automatically replacing an electrode cap of a welding gun, which comprises the following steps: s1, collecting the working times, the coping times and the coping amount of the electrode cap; s2, judging whether the working times of the electrode cap are less than a first set time, if so, not grinding the welding gun and not replacing the electrode cap, otherwise, performing the step S3; and S3, judging whether the number of times of grinding is not more than a second set number of times and the grinding amount is not more than a set thickness, grinding the welding gun if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the set thickness, and replacing the electrode cap if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the. Compared with the prior art, the invention can automatically judge the grinding and replacing conditions of the electrode cap, saves labor, improves the utilization rate of the electrode cap to the maximum extent, effectively reduces the consumption of the electrode cap and ensures the welding quality of a white vehicle body.
Description
Technical Field
The invention relates to the field of automobile manufacturing, in particular to a control method for automatically replacing an electrode cap of a welding gun.
Background
In the current automatic welding process of the body in white, when an electrode cap of a welding gun is replaced, batch replacement is mostly carried out by human experience.
At present, the global automobile industry is rapidly developed, the automobile manufacturing industry is developed day by day, the automobile safety is improved to the top level by the automobile manufacturing, and the welding quality of the body-in-white framework has a stricter significance. In the welding process of a white automobile body, a large number of robot spot welding are adopted, the diameter of the end face of the electrode cap is increased after a certain amount of welding spots are welded by a welding gun, and an oxide layer is attached to the head of the electrode cap. Because the electrode is subjected to high temperature in the welding process and has alloy oxidation reaction with a vehicle body sheet metal part, a zinc sublimation phenomenon is generated, namely zinc is displaced from a steel plate and gathered on the surface of the electrode, the process causes the increase of the resistance on the electrode and influences the conductivity of the electrode, and poor welding such as cold joint, explosion welding and the like is generated. In order to ensure the welding quality of a body-in-white, the electrode cap needs to be polished to remove an oxide layer on the surface of the head of the electrode cap, and the shape, the size and the function of the electrode are repaired by a cutting technology. Most of the existing electrode caps are replaced by artificial experience, so that the electrode caps are not utilized to the maximum extent, and the waste of metal resources and the increase of manufacturing cost are caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a control method for automatically replacing an electrode cap of a welding gun.
the purpose of the invention can be realized by the following technical scheme:
A control method for automatically replacing an electrode cap of a welding gun comprises the following steps:
S1, collecting the working times, the coping times and the coping amount of the electrode cap;
S2, judging whether the working times of the electrode cap are less than a first set time, if so, not grinding the welding gun and not replacing the electrode cap, otherwise, performing the step S3;
And S3, judging whether the number of times of grinding is not more than a second set number of times and the grinding amount is not more than a set thickness, grinding the welding gun if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the set thickness, and replacing the electrode cap if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the.
Preferably, the first set number of times ranges from 150 to 250 times.
Preferably, the first set number of times is 200 times.
Preferably, the second set number of times ranges from 10 to 25 times.
Preferably, the set thickness is 3-6 mm.
Preferably, the control method is realized by a programmable logic controller.
Compared with the prior art, the invention has the following advantages:
1. the grinding and replacing conditions of the electrode cap can be automatically judged, the labor is saved, the utilization rate of the electrode cap is improved to the maximum extent, the consumption of the electrode cap is effectively reduced, and the welding quality of a white vehicle body is ensured.
2. The acquisition signal is convenient, only need through current robot controller data acquisition, set for the program through programmable logic controller and realize control function, need not newly-increased equipment, convenient to use.
3. The data acquisition and processing process is simple, the response time of the control process is short, and the working reliability is high.
Drawings
FIG. 1 is a flow chart of a method in an embodiment.
Detailed Description
the invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
In this embodiment, different working mode programs are set through Matlab-Stateflow software, the number of times the electrode cap has been worked, and the number of times the electrode cap has been worked are continuously collected through a controller of the automatic sharpening robot, the number of times the electrode cap has been worked and the number of times the electrode cap has been worked are compared and determined with the number of times the electrode cap has been worked and the number of times the electrode cap has been worked, which are specified by technical requirements of an automobile factory, and the automatic sharpening robot is caused to perform corresponding working mode selection according. The present embodiment further illustrates the control method by taking the most common Φ 16 × 23 electrode cap as an example as follows:
S1, collecting the number of times a the electrode cap has been worked on, the number of times b the electrode cap has been sharpened and the amount c of sharpening by a controller of the automatic sharpening robot, and collecting the number of times a the electrode cap has been sharpened and the number c of times the electrode cap has been sharpened into a control program set by Stateflow as a dependent variable.
S2, judging whether the working times of the electrode cap are less than a first set time, wherein the first set time is determined by the technical requirements of automobile factories, the size of the electrode cap and the material, and is generally 150-250 times. In this embodiment, the first set number of times is 200 times, and if the number of times a that the electrode cap has been operated is less than 200 times, the robot selects the first operation mode, that is, the welding gun is not polished and the electrode cap is not replaced; if the number of times the electrode cap has been operated is equal to 200, the step S3 is performed for further determination.
S3, judging whether the number of times of grinding is not more than a second set number of times and the grinding amount is not more than a set thickness, wherein the second set number of times and the set thickness are determined by technical requirements of automobile factories and the size and the material of the electrode cap, the range of the second set number of times is 10-25 times generally, and the range of the set thickness is 3-6 mm. In this embodiment, the second set number of times is 20 times, the set thickness is 5 mm, and if the number of times of grinding the electrode cap is less than or equal to 5 mm and the number of times of grinding is less than or equal to 20 times, the robot selects the second working mode, that is, the welding gun grinds, but does not replace the electrode cap; and if the grinding times of the electrode cap are more than 20 times or the grinding amount of the electrode cap is more than 5 millimeters, the robot selects the third working mode and automatically replaces the electrode cap.
By the method, the automatic grinding robot continuously judges whether the electrode cap needs to be ground or replaced, the utilization rate of the electrode cap can be improved to the maximum extent, the consumption of the electrode cap is effectively reduced, the welding quality of a white vehicle body is guaranteed, and manpower is saved. The control method is realized by the programmable logic controller, and the response time is short and the working reliability is high due to simple data acquisition and processing.
Claims (6)
1. A control method for automatically replacing an electrode cap of a welding gun is characterized by comprising the following steps:
S1, collecting the working times, the coping times and the coping amount of the electrode cap;
S2, judging whether the working times of the electrode cap are less than a first set time, if so, not grinding the welding gun and not replacing the electrode cap, otherwise, performing the step S3;
And S3, judging whether the number of times of grinding is not more than a second set number of times and the grinding amount is not more than a set thickness, grinding the welding gun if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the set thickness, and replacing the electrode cap if the number of times of grinding is not more than the second set number of times and the grinding amount is not more than the.
2. The method for controlling the automatic replacement of the electrode cap of the welding gun according to claim 1, wherein the first set number of times is in a range of 150 to 250 times.
3. The automatic electrode cap replacement control method for the welding gun according to claim 2, wherein the first set number of times is 200.
4. the method for controlling the automatic replacement of the electrode cap of the welding gun according to claim 1, wherein the second set number of times is in a range of 10 to 25 times.
5. the method for controlling the automatic replacement of the electrode cap of the welding gun according to claim 1, wherein the set thickness is 3-6 mm.
6. The control method for automatically replacing the electrode cap of the welding gun according to claim 1, wherein the control method is realized by a programmable logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540392.9A CN110548975A (en) | 2018-05-30 | 2018-05-30 | Control method for automatic replacement of electrode cap of welding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540392.9A CN110548975A (en) | 2018-05-30 | 2018-05-30 | Control method for automatic replacement of electrode cap of welding gun |
Publications (1)
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| CN110548975A true CN110548975A (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810540392.9A Pending CN110548975A (en) | 2018-05-30 | 2018-05-30 | Control method for automatic replacement of electrode cap of welding gun |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008543A (en) * | 2020-07-20 | 2020-12-01 | 大制(苏州)科技有限公司 | Abnormal grinding diagnosis method for electrode cap of welding gun |
| CN112633752A (en) * | 2020-12-30 | 2021-04-09 | 广州明珞装备股份有限公司 | Electrode cap utilization rate evaluation method, system, device and storage medium |
| CN113327407A (en) * | 2021-05-08 | 2021-08-31 | 广州明珞装备股份有限公司 | Electrode cap alarm value analysis method, system and device and storage medium |
| CN113362573A (en) * | 2021-05-08 | 2021-09-07 | 广州明珞装备股份有限公司 | Electrode cap alarm threshold optimization method, system and device and storage medium |
| CN113409558A (en) * | 2021-05-08 | 2021-09-17 | 广州明珞装备股份有限公司 | Electrode cap batch replacement alarm method, system and device and storage medium |
| CN113843555A (en) * | 2021-10-19 | 2021-12-28 | 深圳市百耐信科技有限公司 | Automatic spot welding method and device for battery pack, computer equipment and storage medium |
| CN113927145A (en) * | 2021-11-10 | 2022-01-14 | 北京凌云东园科技有限公司 | Automatic grinding system and method for spot welding electrode cap |
| CN114633010A (en) * | 2022-03-15 | 2022-06-17 | 一汽解放汽车有限公司 | Robot welding gun grinding method and device, computer equipment and storage medium |
| CN116352513A (en) * | 2023-06-01 | 2023-06-30 | 佛山博世丰通汽车零部件有限公司 | Electrode polishing method, electrode polishing device and welding equipment |
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| CN108672910A (en) * | 2018-08-01 | 2018-10-19 | 长春三友汽车部件制造有限公司 | A kind of pressure between mash welder and its electrode controls automatic switchover system |
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| JP2002219581A (en) * | 2001-01-25 | 2002-08-06 | Honda Motor Co Ltd | Anomaly detection method for dressing of electrode tip and device therefor |
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| CN203928976U (en) * | 2014-05-13 | 2014-11-05 | 上海捷众汽车冲压件有限公司 | Multifunctional dot welding electrode pick-up unit |
| CN105290516A (en) * | 2014-07-23 | 2016-02-03 | 发那科株式会社 | Dressing system for electrode of spot welding gun |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008543A (en) * | 2020-07-20 | 2020-12-01 | 大制(苏州)科技有限公司 | Abnormal grinding diagnosis method for electrode cap of welding gun |
| CN112633752A (en) * | 2020-12-30 | 2021-04-09 | 广州明珞装备股份有限公司 | Electrode cap utilization rate evaluation method, system, device and storage medium |
| CN112633752B (en) * | 2020-12-30 | 2023-10-17 | 广州明珞装备股份有限公司 | Electrode cap use rate evaluation method, system, device and storage medium |
| CN113327407B (en) * | 2021-05-08 | 2022-07-26 | 广州明珞装备股份有限公司 | Electrode cap alarm value analysis method, system and device and storage medium |
| CN113327407A (en) * | 2021-05-08 | 2021-08-31 | 广州明珞装备股份有限公司 | Electrode cap alarm value analysis method, system and device and storage medium |
| CN113362573A (en) * | 2021-05-08 | 2021-09-07 | 广州明珞装备股份有限公司 | Electrode cap alarm threshold optimization method, system and device and storage medium |
| CN113409558A (en) * | 2021-05-08 | 2021-09-17 | 广州明珞装备股份有限公司 | Electrode cap batch replacement alarm method, system and device and storage medium |
| CN113843555A (en) * | 2021-10-19 | 2021-12-28 | 深圳市百耐信科技有限公司 | Automatic spot welding method and device for battery pack, computer equipment and storage medium |
| CN113927145A (en) * | 2021-11-10 | 2022-01-14 | 北京凌云东园科技有限公司 | Automatic grinding system and method for spot welding electrode cap |
| CN114633010A (en) * | 2022-03-15 | 2022-06-17 | 一汽解放汽车有限公司 | Robot welding gun grinding method and device, computer equipment and storage medium |
| CN114633010B (en) * | 2022-03-15 | 2024-06-04 | 一汽解放汽车有限公司 | Robot welding gun repairing and grinding method and device, computer equipment and storage medium |
| CN116352513A (en) * | 2023-06-01 | 2023-06-30 | 佛山博世丰通汽车零部件有限公司 | Electrode polishing method, electrode polishing device and welding equipment |
| CN116352513B (en) * | 2023-06-01 | 2023-07-21 | 佛山博世丰通汽车零部件有限公司 | Electrode polishing method, electrode polishing device and welding equipment |
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Application publication date: 20191210 |