CN221008815U - A remove scar instrument for twin-screw copper tungsten arc contact - Google Patents
A remove scar instrument for twin-screw copper tungsten arc contact Download PDFInfo
- Publication number
- CN221008815U CN221008815U CN202322768703.6U CN202322768703U CN221008815U CN 221008815 U CN221008815 U CN 221008815U CN 202322768703 U CN202322768703 U CN 202322768703U CN 221008815 U CN221008815 U CN 221008815U
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- Prior art keywords
- cylindrical body
- area
- tungsten arc
- tool
- zone
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- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 231100000241 scar Toxicity 0.000 title claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 32
- 239000011241 protective layer Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001315 Tool steel Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 208000032544 Cicatrix Diseases 0.000 description 7
- 230000037387 scars Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Milling Processes (AREA)
Abstract
The utility model discloses a scar removing tool for a double-screw copper-tungsten arc contact, which comprises a cylindrical body connected with a driving device, wherein the cylindrical body is provided with a containing cavity penetrating through the cylindrical body, the containing cavity is divided into a thread protecting area and a locating area, a cutter clamping area is formed at the upper end of the outer wall of the cylindrical body, a cutting area is arranged at the bottom end of the cutter clamping area, and a protecting layer is arranged on the outer wall of the cylindrical body along the longitudinal direction of the cutter clamping area. The scar removing tool provided by the utility model can be used for rapidly and conveniently solving the problem of scar removing, the root of the removed screw rod achieves the back-gouging effect, the assembly requirement of a copper-tungsten contact is completely met, and the scar removing tool has the advantages of simple structure, high efficiency and low cost, and is strong in practicality and suitable for popularization and application.
Description
Technical Field
The utility model relates to the technical field of electromechanics, in particular to a scar removing tool for a double-screw copper-tungsten arc contact.
Background
An on-load tap changer is a special switch for switching the tap of a primary or secondary winding to regulate its output voltage in case of a transformer with a load. At present, copper tungsten alloy is mostly adopted in a heavy current tapping switch to manufacture an arc contact, copper in a copper tungsten contact material is a current carrying phase, and the copper tapping switch mainly plays roles in electric conduction and heat conduction. Because the melting point of copper is lower, the copper is melted into liquid under the action of high temperature of current, and tungsten metal which plays a role of a framework forms a plurality of small holes and has capillary action, so that the melted metal is stored in the capillary, the electric abrasion of the contact is reduced, and the electric life of the contact is prolonged. The copper-tungsten contact is sintered and formed by powder, and the copper-tungsten contact is welded on a base of the copper-tungsten contact after the copper-tungsten contact is formed, so that the welding position is required to be full and free of welding seams in order to ensure the welding quality in the welding process.
Currently, in the heavy current tapping switch, there is an on-load tapping switch, the screw on the copper tungsten arc contact is composed of two screws, and a double screw structure is formed, as shown in fig. 1, the two screws are welded on the copper tungsten contact base in a brazing mode, after welding, weld scars can be accumulated at the root of the screw, and the assembly can not be affected by removing the weld scars. At present, the weld scars at the root of the copper-tungsten contact screw rod are removed by adopting the following two technological methods: firstly, a fitter removes the workpiece through a polishing mode, and uses a polishing tool, such as a grinding wheel head with a small file, to polish the workpiece carefully along a circle of screw rod, and then uses the file to file the root part little by little, so that the workpiece is polished to meet the requirements. By adopting the bench grinding method, the working efficiency is low, the time is about 10 minutes, the removal quality cannot be ensured, and the situation that the grinding wheel head accidentally damages threads often occurs. And secondly, milling and removing by adopting a machining center, clamping the copper-tungsten contact on the machining center, setting convenient for walking knife programs, and controlling the knife to perform end milling along the circumference of the screw. Because the positioning of the copper-tungsten contacts is the external dimension, the external dimension of each contact has individual difference, so that the situation that the screw thread is milled easily occurs in the cutter feeding process is caused. By adopting the milling and removing method for the machining center, the requirement on the consistency of the external dimensions of the contact is very high, and if the external dimensions are machined by adopting a high-precision machining method, the machining cost of the contact is greatly increased.
The two processing methods have more defects, and in order to solve the processing problem of removing the weld marks of the copper-tungsten contacts, the existing processing mode needs to be improved, so that a special tool for removing the weld marks at the root of the screw is provided.
Disclosure of utility model
Aiming at the problems in the background technology, the utility model provides a scar removing tool which has a simple structure and is convenient to operate, and an existing drilling machine is adopted as a driving device, so that the scar removing tool can rapidly and conveniently treat the problem of the root of a screw rod, and the processing efficiency can be greatly improved, in particular to the scar removing tool for a double-screw-rod copper-tungsten arc contact.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a remove welding scar instrument for twin-screw copper tungsten arc contact, includes the cylindric body that is connected with drive arrangement, cylindric body has the holding cavity that link up cylindric body, hold the cavity and divide into screw thread protection district and location district, cylindric body's outer wall upper end is formed with the cutter clamping area, and is equipped with the cutting area in its bottom to on cylindric body's the outer wall, along its vertically be equipped with the protective layer.
Further, according to the scar removing tool for the double-screw copper-tungsten arc contact, the inner diameter of the thread protection zone in the cylindrical body is larger than the inner diameter of the positioning zone, the length of the thread protection zone is larger than the length of the positioning zone, and the inner diameter of the positioning zone is matched with the outer diameter of a screw to be polished; the protective layer is positioned on the outer wall of the cylindrical body outside the positioning area, and the length of the protective layer is the same as that of the positioning area.
Further, the utility model provides a defluxing tool for a double-screw copper-tungsten arc contact, wherein the cutting zone consists of a plurality of cutting edges arranged along the bottom of a cylindrical body.
Further, the utility model relates to a welding scar removing tool for a double-screw copper-tungsten arc contact, which is characterized in that: the cutting area forms a circular ring structure along the bottom of the cylindrical body through a plurality of cutting edges, and the principal deflection angle of the cutting edges is 45 degrees.
Furthermore, the utility model relates to a welding scar removing tool for a double-screw copper-tungsten arc contact, wherein the cylindrical body is made of carbon tool steel, the protective layer is a titanium plating coating, and the protective layer and the cylindrical body are manufactured into an integral structure.
Compared with the prior art, the welding scar removing tool for the double-screw copper-tungsten arc contact has the advantages that the existing drilling machine is used as a driving device, the cutting area at the bottom of the cylindrical body is utilized, the welding scar at the welding part can be polished through rotation of the cutting edge, and meanwhile, the cylindrical body at the outer side of the positioning area is also provided with the protective layer formed by the titanium plating coating, so that the wear resistance and the surface hardness of the cutting area can be increased. Therefore, the scar removing tool can quickly and conveniently solve the problem of scar removing, the processing time is reduced from about 10 minutes of original pincer polishing and removing to about 1 minute, the removed screw root achieves the effect of back gouging, the assembly requirement of the copper-tungsten contact is completely met, and the scar removing tool has the advantages of simple structure, high efficiency and low cost, and is strong in practicality and suitable for popularization and application.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a twin screw copper tungsten arc contact of an on-load tap-changer;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view of the structure of the present utility model in its use state;
fig. 4 is a second schematic structural view of the present utility model in a use state.
The figure shows: 1-cylindrical body, 11-thread protection zone, 12-location zone, 13-tool clamping zone, 14-cutting zone, 2-protection layer, 3-screw, 4-weld scar.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right" and the like are used herein for descriptive purposes only and are not intended to limit the scope of the utility model for which the utility model may be practiced.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected", "provided" and "having a meaning of" connected "are to be interpreted in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
It should be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 2, the scar removing tool for a double-screw copper-tungsten arc contact according to the present utility model comprises a cylindrical body 1 connected with a driving device, wherein the cylindrical body 1 is provided with a receiving cavity penetrating through the cylindrical body 1, the receiving cavity is divided into a thread protecting area 11 and a positioning area 12, a cutter clamping area 13 is formed at the upper end of the outer wall of the cylindrical body 1, a cutting area 14 is arranged at the bottom end of the cutter clamping area, and a protecting layer 2 is arranged on the outer wall of the cylindrical body 1 along the longitudinal direction of the cutter clamping area; wherein, the inner diameter of the thread protection zone 11 in the cylindrical body 1 is larger than the inner diameter of the positioning zone 12, the length of the thread protection zone 11 is larger than the length of the positioning zone 12, and the inner diameter of the positioning zone 12 is matched with the outer diameter of a screw to be polished; the protective layer 2 is positioned on the outer wall of the cylindrical body 1 outside the positioning area 12, and the length of the protective layer is the same as that of the positioning area 12; the cutting area 14 is composed of a plurality of cutting edges arranged along the bottom of the cylindrical body 1, the plurality of cutting edges form a circular ring structure along the bottom of the cylindrical body 1, and the principal deflection angle of the cutting edges is 45 degrees, namely, the cutting edges and the axis of the cylindrical body 1 form an included angle of 45 degrees.
Further, the cylindrical body 1 is made of carbon tool steel, the protective layer 2 is a titanium-plated coating, the protective layer 2 and the cylindrical body 1 are manufactured into an integral structure, and the protective layer 2 is made of the titanium-plated coating, so that the wear resistance and the surface hardness of the cutting area 14 can be increased.
As shown in fig. 2 and 3, the defluxing tool of the utility model is used in a double-screw copper-tungsten arc contact of an on-load tap-changer, and the specific using method is as follows:
Firstly, a cutter clamping area 13 in a cylindrical body 1 is connected with a driving device, the control driving is a drilling machine, then the cylindrical body 1 is sleeved on one screw rod to be polished, finally, the driving device is started, power is provided by the driving device to drive the cylindrical body 1 to move downwards and forwards, the axial feeding speed of a scar removing tool along the screw rod 3 is controlled to be 120-180 mm/min, the cylindrical body 1 polishes the scars of a welding part by using a cutting area 14 arranged at the bottom end of the cylindrical body 1 in the process of rotating around the screw rod from top to bottom, and the scars are removed by polishing until the root of the screw rod 3 reaches a back-chipping state, so that the assembly requirement of a copper-tungsten contact in an on-load tap changer is met; in the specific polishing process, the weld scars on one screw rod 3 are polished firstly, after polishing is finished, the driving device is controlled to drive the cylindrical body 1 to move upwards and reversely, so that the cylindrical body is separated from the top of the screw rod 3, and finally, the other screw rod 3 in the copper-tungsten arc contact is polished according to the same steps.
The utility model adopts the tool for removing the welding scars, as the cylindrical body 1 comprises a cutter clamping area 13, a thread protection area 11, a positioning area 12 and a cutting area 14, the cylindrical body 1 outside the positioning area 12 is provided with a titanium plating coating as a protective layer 2, the titanium plating coating is used for increasing the wear resistance and the surface hardness of the cutting area 14, wherein the cutter clamping area 13 can be designed according to the clamping size of a drilling machine, the thread protection area 11 is a cavity in the cylindrical body 1 to realize the protection of external threads on a screw rod 3, the inner diameter of the positioning area 12 is designed according to the size of the threads on the screw rod 3 and is slightly larger than the size of the external threads, the cutting area 14 consists of a circle of cutting edges, and the principal deflection angle of the cutting edges is 45 degrees. In the use process, the welding wire is clamped on a common drilling machine, the drilling machine is used for providing power to drive the cylindrical body 1 to rotate on the screw rod 3 from top to bottom, and the cutting edge in the cutting area 14 is used for polishing the weld scar 4.
Other aspects of the utility model are not specifically described and are well known to those skilled in the art.
The scar removing tool provided by the utility model can be used for rapidly and conveniently solving the problem of scar removing, the root of the removed screw rod achieves the back-gouging effect, the assembly requirement of a copper-tungsten contact is completely met, and the scar removing tool has the advantages of simple structure, high efficiency and low cost, and is strong in practicality and suitable for popularization and application.
The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific embodiments, but the above description is only a preferred embodiment of the present utility model, and is not limited to the present utility model, and any minor modifications, equivalent substitutions and improvements made according to the technical solutions of the present utility model should be included in the protection scope of the technical solutions of the present utility model.
Claims (5)
1. The utility model provides a remove scar instrument that is used for twin-screw copper tungsten arc contact, includes the cylindric body that is connected with drive arrangement, its characterized in that: the cylindrical body is provided with a containing cavity which penetrates through the cylindrical body, the containing cavity is divided into a thread protection area and a positioning area, a cutter clamping area is formed at the upper end of the outer wall of the cylindrical body, a cutting area is arranged at the bottom end of the cylindrical body, and a protection layer is arranged on the outer wall of the cylindrical body along the longitudinal direction of the cylindrical body.
2. A defluxing tool for twin screw copper tungsten arc contacts according to claim 1, wherein: the inner diameter of the thread protection zone in the cylindrical body is larger than the inner diameter of the positioning zone, the length of the thread protection zone is larger than the length of the positioning zone, and the inner diameter of the positioning zone is matched with the outer diameter of a screw to be polished; the protective layer is positioned on the outer wall of the cylindrical body outside the positioning area, and the length of the protective layer is the same as that of the positioning area.
3. A defluxing tool for twin screw copper tungsten arc contacts according to claim 2, wherein: the cutting zone is comprised of a plurality of cutting edges disposed along the bottom of the cylindrical body.
4. A defluxing tool for twin screw copper tungsten arc contacts according to claim 3, wherein: the cutting area forms a circular ring structure along the bottom of the cylindrical body through a plurality of cutting edges, and the principal deflection angle of the cutting edges is 45 degrees.
5. A defluxing tool for twin screw copper tungsten arc contacts according to claim 4, wherein: the cylindrical body is made of carbon tool steel, the protective layer is a titanium-plated coating, and the protective layer and the cylindrical body are manufactured into an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322768703.6U CN221008815U (en) | 2023-10-16 | 2023-10-16 | A remove scar instrument for twin-screw copper tungsten arc contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322768703.6U CN221008815U (en) | 2023-10-16 | 2023-10-16 | A remove scar instrument for twin-screw copper tungsten arc contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221008815U true CN221008815U (en) | 2024-05-24 |
Family
ID=91114510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322768703.6U Active CN221008815U (en) | 2023-10-16 | 2023-10-16 | A remove scar instrument for twin-screw copper tungsten arc contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221008815U (en) |
-
2023
- 2023-10-16 CN CN202322768703.6U patent/CN221008815U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |