CN111618412A - Electrode grinding device and working method - Google Patents
Electrode grinding device and working method Download PDFInfo
- Publication number
- CN111618412A CN111618412A CN202010587778.2A CN202010587778A CN111618412A CN 111618412 A CN111618412 A CN 111618412A CN 202010587778 A CN202010587778 A CN 202010587778A CN 111618412 A CN111618412 A CN 111618412A
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- electrode
- single ring
- ring
- chain
- arc surface
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000005065 mining Methods 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 230000010485 coping Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- B23K11/30—Features relating to electrodes
- B23K11/3063—Electrode maintenance, e.g. cleaning, grinding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to an electrode grinding device and a working method, and belongs to the technical field of large-specification mining chain flash welding. The electrode grinding device is realized by processing the sawtooth structures on two sides of the single-ring V-shaped opening, a new electrode is arranged on a welding machine, the device is arranged at a corresponding position, the electrode pressing-loosening-pressing actions are repeated, the single-ring of the sawtooth structures on the device rotates annularly, the excess materials at the point contact part of the inner arc surface of the electrode can be scraped, the repeated actions are repeated, the consistent adhesion of the arc surface of the sawtooth structures and the inner arc surface of the electrode can be rapidly realized, and the period from grinding the inner arc surface of the electrode to grinding the reliable arc surface is shortened to within a few minutes from the original period of welding hundreds of single rings (about 4 hours), so the period is greatly shortened, the chain ring welding quality is also improved, and a tool guarantee is provided for improving the chain product quality.
Description
Technical Field
The invention belongs to the technical field of large-specification mining chain flash welding, and particularly relates to an electrode grinding device and a working method.
Background
The surface of the chain ring is a curved surface similar to the outer surface of a cylinder, and the surface of the section of the chain ring is more irregular due to the bending and extrusion effect of the knitting machine on the straight edge of the open section of the chain ring in the chain knitting process. During the welding process, it is desirable that the electrode and the link contact surface are completely attached to ensure good conductivity. Under the condition of the prior art, the contact surface of the electrode used for contacting with the chain ring is usually processed into a cylindrical surface according to the shape of the outer edge of the bar stock, but the bar stock is deformed in the weaving process, and in addition, due to the installation position, the axis of the outer cylindrical surface of the bar stock and the axis of the cylindrical surface of the electrode often form a certain included angle. The cylindrical surface of the electrode and the cylindrical surface of the chain ring cannot be completely attached, particularly, the newly used electrode is poor in contact with the chain ring, so that the resistance of a contact part is increased, the temperature field distribution near the welded junction of the chain ring is further uneven, the performance of a welded joint is directly affected, and the serious quality problems such as overburning of materials at the contact position are caused most seriously.
The existing method is to gradually polish the new electrode by a spherical grinding head according to the specific contact condition of the new electrode and a chain ring, and weld the new electrode while polishing. Because the electrode is made of copper alloy and has soft hardness, the chain ring is made of high-strength steel and has hard hardness, and after hundreds of chain rings are welded, the contact surface between the electrode and the chain ring can be gradually attached due to natural abrasion between the electrode and the chain ring, and finally a good contact surface is formed. But the performance of the welded link weld joint during this period tends to be unstable, posing a risk to the product quality of the chain.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to a device for grinding an electrode aiming at flash butt welding shortens the period from the grinding of the electrode and a chain ring to the complete fitting and improves the welding quality of the chain ring.
(II) technical scheme
In order to solve the technical problem, the invention provides an electrode grinding device which is a single ring, and a saw-toothed structure is machined on the single ring at all contact surface positions of the single ring and an electrode.
Preferably, all contact surface positions on the single ring and the electrode comprise the upper surface and the side surfaces on two sides of the V-shaped opening on the single ring.
Preferably, the saw-tooth like structure is a saw-tooth like protrusion.
Preferably, the single loop has a profile that conforms to the links to be welded.
The invention also provides a preparation method of the device, which comprises the following steps: firstly, weaving a single ring by using a bar stock, wherein the specification size and tolerance of the single ring are consistent with those of a chain ring matched with an electrode, and machining a saw-toothed structure at the contact surface position of the single ring and the electrode.
The invention also provides a method for polishing the electrode by using the device, which comprises the following steps: after replacing a new electrode by a flash welding machine, firstly replacing a chain ring by an electrode grinding device, putting the electrode grinding device at the position of welding the chain ring, starting the welding machine, pressing down the electrode, wherein the contact surface of the electrode and a single ring is in point contact, repeating the action of pressing down and releasing the electrode through manual operation, at the moment, the left side and the right side of the single ring are fixed by a baffle, the bars at the two sides of a V-shaped opening of the single ring form a cantilever beam, and when the electrode is pressed down, the outer surface of the single ring and the contact surface of the electrode slide relatively, so when the electrode is pressed down, the V-shaped opening is reduced, the position of a zigzag structure on the single ring is subjected to forward pressure, meanwhile, under the premise that the left side and the right side of the single ring are fixed, the single ring rotates annularly, under the action of repeatedly pressing down and releasing the electrode, the zigzag structure is at the position opposite to, scraping the point contact part of the electrode and the sawtooth structure, and gradually transitioning to arc surface contact, thereby realizing the consistent joint of the sawtooth structure arc surface and the electrode inner arc surface, namely finishing the polishing of the electrode.
The invention also provides application of the device in improving the quality of chain products.
The invention also provides application of the electrode coping method in improving the quality of chain products.
The invention also provides application of the device in a large-specification mining chain flash welding technology.
The invention also provides application of the electrode coping method in a large-specification mining chain flash welding technology.
(III) advantageous effects
The electrode grinding device is realized by processing the sawtooth structures on two sides of the single-ring V-shaped opening, a new electrode is arranged on a welding machine, the device is arranged at a corresponding position, the electrode pressing-loosening-pressing actions are repeated, the single-ring of the sawtooth structures on the device rotates annularly, the excess materials at the point contact part of the inner arc surface of the electrode can be scraped, the repeated actions are repeated, the consistent adhesion of the arc surface of the sawtooth structures and the inner arc surface of the electrode can be rapidly realized, and the period from grinding the inner arc surface of the electrode to grinding the reliable arc surface is shortened to within a few minutes from the original period of welding hundreds of single rings (about 4 hours), so the period is greatly shortened, the chain ring welding quality is also improved, and a tool guarantee is provided for improving the chain product quality.
Drawings
FIG. 1 is a schematic view of an electrode dressing apparatus according to the present invention;
FIG. 2 is an enlarged view of the surface of the serrated structure of the electrode dressing apparatus according to the present invention;
fig. 3a is a schematic view showing the operation of an electrode and the electrode thinning apparatus of the present invention, and fig. 3b is a view taken along the direction a-a of fig. 3 a.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in figure 1, the electrode coping device provided by the invention is a single ring, the shape of the electrode coping device is consistent with that of a chain ring to be welded, a section of surface with a sawtooth structure is processed at all contact surface positions of the single ring and an electrode 1, and all contact surface positions of the single ring and the electrode 1 comprise the upper surface and the side surfaces of two sides of a V-shaped opening on the single ring.
The preparation method of the device comprises the following steps: firstly, weaving a single ring by using a bar stock, wherein the specification size and the tolerance are consistent with those of a chain ring matched with the electrode 1, and machining a saw-toothed structure (saw-toothed protrusion) at the contact surface position of the single ring and the electrode 1, wherein the shape of the saw-toothed structure is enlarged in a figure 2.
The method for polishing the electrode by using the device comprises the following steps: after replacing the electrode with a new one every time, the electrode sharpening device is used to replace the chain link, the electrode sharpening device is put in the position of the chain link to be welded, the welding machine is started, and the electrode 1 is pressed down, as shown in fig. 3. At this time, the electrode 1 is in contact with a few points of the single-ring contact surface, as shown in fig. 3a and 3 b; the actions of pressing down, loosening and pressing down of the electrode 1 are repeated through manual operation, at the moment, the left side and the right side of the single ring are fixed by the baffle, and due to the existence of the V-shaped opening of the single ring, the bar materials on the two sides of the V-shaped opening of the single ring actually form a cantilever beam; when the electrode 1 is pressed down each time, a relative sliding exists between the outer surface of the single ring and the contact surface of the electrode 1, as the outer side surface of the single ring (comprising the upper surface and the side surface of two sides of a V-shaped opening on the single ring) is processed with a saw-toothed structure, the saw-toothed structure can form a cutting effect on the contact surface of the softer electrode 1 and accelerate the abrasion of the electrode 1, when the electrode 1 is pressed down, the V-shaped opening is reduced, the position of the saw-toothed structure on the single ring is subjected to positive pressure, meanwhile, under the premise that the positions of the left side and the right side of the single ring are fixed, the single ring can rotate annularly, under the action of repeatedly pressing down and loosening the electrode 1, the saw-toothed structure is positioned opposite to the inner arc surface of the electrode 1, the saw-toothed structure acts on the inner arc surface of the electrode 1 to scrape the point contact part of the electrode, i.e. the thinning of the electrode 1 is completed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The electrode grinding device is characterized in that the device is a single ring, and a saw-toothed structure is machined on the single ring at all contact surface positions with electrodes.
2. The device of claim 1, wherein the locations of all contact surfaces on the single ring with the electrodes comprise the top surface and the sides of the single ring on both sides of the V-shaped opening.
3. The device of claim 1, wherein the serrations are serrations.
4. A device according to claim 1, wherein the single loop has a profile conforming to the links to be welded.
5. A method of manufacturing a device according to claim 2 or 3 or 4, comprising the steps of: firstly, weaving a single ring by using a bar stock, wherein the specification size and tolerance of the single ring are consistent with those of a chain ring matched with an electrode, and machining a saw-toothed structure at the contact surface position of the single ring and the electrode.
6. A method of electrode thinning using the apparatus of claim 2 or 3 or 4, comprising the steps of: after replacing a new electrode by a flash welding machine, firstly replacing a chain ring by an electrode grinding device, putting the electrode grinding device at the position of welding the chain ring, starting the welding machine, pressing down the electrode, wherein the contact surface of the electrode and a single ring is in point contact, repeating the action of pressing down and releasing the electrode through manual operation, at the moment, the left side and the right side of the single ring are fixed by a baffle, the bars at the two sides of a V-shaped opening of the single ring form a cantilever beam, and when the electrode is pressed down, the outer surface of the single ring and the contact surface of the electrode slide relatively, so when the electrode is pressed down, the V-shaped opening is reduced, the position of a zigzag structure on the single ring is subjected to forward pressure, meanwhile, under the premise that the left side and the right side of the single ring are fixed, the single ring rotates annularly, under the action of repeatedly pressing down and releasing the electrode, the zigzag structure is at the position opposite to, scraping the point contact part of the electrode and the sawtooth structure, and gradually transitioning to arc surface contact, thereby realizing the consistent joint of the sawtooth structure arc surface and the electrode inner arc surface, namely finishing the polishing of the electrode.
7. Use of a device according to claim 2 or 3 or 4 for improving the quality of a chain product.
8. Use of the electrode thinning method according to claim 6 for improving the quality of chain products.
9. Use of the apparatus of claim 2 or 3 or 4 in large scale mining chain flash welding technology.
10. Use of the method of electrode thinning according to claim 6 in large scale mining chain flash welding technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010587778.2A CN111618412B (en) | 2020-06-24 | 2020-06-24 | Electrode coping device and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010587778.2A CN111618412B (en) | 2020-06-24 | 2020-06-24 | Electrode coping device and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111618412A true CN111618412A (en) | 2020-09-04 |
| CN111618412B CN111618412B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010587778.2A Active CN111618412B (en) | 2020-06-24 | 2020-06-24 | Electrode coping device and working method |
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| Country | Link |
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| CN (1) | CN111618412B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255821A (en) * | 2022-07-26 | 2022-11-01 | 天津七所高科技有限公司 | Electrode grinding plate and method for prolonging service life of aluminum alloy resistance welding electrode cap |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071079A (en) * | 1998-09-01 | 2000-03-07 | Honda Motor Co Ltd | Chip dresser |
| CN201020660Y (en) * | 2007-08-13 | 2008-02-13 | 比亚迪股份有限公司 | Electrode grinding device for spot welding machine |
| CN201471075U (en) * | 2009-07-20 | 2010-05-19 | 李震 | Working auto-repairing device of electrode wheel of welding machine |
| CN105458623A (en) * | 2015-12-04 | 2016-04-06 | 顾伟 | Welding production technology for R4-level anchor chain |
| CN108367379A (en) * | 2015-12-01 | 2018-08-03 | 极动焊接机械有限公司 | Electrode tip reconditioning bite and electrode tip reconditioning equipment |
| CN212634654U (en) * | 2020-06-24 | 2021-03-02 | 北京华海基业机械设备有限公司 | Electrode grinding device and flash butt welding system |
-
2020
- 2020-06-24 CN CN202010587778.2A patent/CN111618412B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000071079A (en) * | 1998-09-01 | 2000-03-07 | Honda Motor Co Ltd | Chip dresser |
| CN201020660Y (en) * | 2007-08-13 | 2008-02-13 | 比亚迪股份有限公司 | Electrode grinding device for spot welding machine |
| CN201471075U (en) * | 2009-07-20 | 2010-05-19 | 李震 | Working auto-repairing device of electrode wheel of welding machine |
| CN108367379A (en) * | 2015-12-01 | 2018-08-03 | 极动焊接机械有限公司 | Electrode tip reconditioning bite and electrode tip reconditioning equipment |
| CN105458623A (en) * | 2015-12-04 | 2016-04-06 | 顾伟 | Welding production technology for R4-level anchor chain |
| CN212634654U (en) * | 2020-06-24 | 2021-03-02 | 北京华海基业机械设备有限公司 | Electrode grinding device and flash butt welding system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255821A (en) * | 2022-07-26 | 2022-11-01 | 天津七所高科技有限公司 | Electrode grinding plate and method for prolonging service life of aluminum alloy resistance welding electrode cap |
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| CN111618412B (en) | 2023-11-24 |
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