CN103949767A - Spot-welding electrode - Google Patents
Spot-welding electrode Download PDFInfo
- Publication number
- CN103949767A CN103949767A CN201410199119.6A CN201410199119A CN103949767A CN 103949767 A CN103949767 A CN 103949767A CN 201410199119 A CN201410199119 A CN 201410199119A CN 103949767 A CN103949767 A CN 103949767A
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- CN
- China
- Prior art keywords
- electrode
- dovetail groove
- dovetail
- electrode tip
- spot
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B23K11/30—Features relating to electrodes
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
The invention discloses a spot-welding electrode. The spot-welding electrode comprises an upper electrode and a lower electrode, wherein the upper electrode comprises an upper electrode handle and an upper electrode head; the lower electrode comprises a lower electrode handle and a lower electrode head; the upper electrode handle comprises a first cylinder part and a first cone part; the lower electrode handle comprises a second cylinder part and a second cone part; a first dovetail groove is formed in the end part of the first cylinder part; the upper electrode head is provided with a first dovetail clamped with the first dovetail groove, and is fixed on the first dovetail groove by welding; a second dovetail groove is formed in the end part of the second cylinder part; the lower electrode head is provided with a second dovetail clamped with the second dovetail groove, and is fixed on the second dovetail groove by welding. In a spot-welding process, after a plurality of products are welded, the upper electrode and the lower electrode cannot be inclined, displaced (translated or rotated) and disengaged due to the combined positioning action of structural fixation and welding fixation of the dovetail grooves even if the own temperature of each electrode rises, so that the first-pass yield of spot-welded products is improved.
Description
Technical field
The present invention relates to spot-welding technology field, relate in particular to a kind of spot-wedling electrode.
Background technology
Spot welding is the method for attachment of a kind of high speed, economy, it is suitable for manufacturing and can adopts overlap joint, joint not to require that airtight, thickness is less than the punching press of 3mm, the thin-plate element of rolling,, for the processing of light sheet material in enormous quantities, be particularly the indivedual means of spot welds on the contact-making surface of joint weldment.Spot-wedling electrode is the strength member that guarantees point quality.
Some light sheet products designing requirement is fixed by spot welding mode, need to be welded into one by upper and lower two, inner thawing fully, and must not there is crackle, burn, burn and the excessively dark defects such as impression in appearance.If Product jointing will be combined together, must there is suitable electrode.
As depicted in figs. 1 and 2, Fig. 1 is upper electrode arrangement cutaway view of the prior art to existing electrode structure; Fig. 2 is lower electrode arrangement cutaway view of the prior art.As can be seen from Figure 1, upper electrode tip 02 is welded direct to the end of top electrode handle 01, and solder joint 03 is positioned on the lower surface 05 of top electrode handle 01; As can be seen from Figure 2, lower electrode tip 06 is welded direct to the end of bottom electrode handle 08, and solder joint 03 is positioned on the upper surface 09 of bottom electrode handle 08.No matter being top electrode or bottom electrode, is all that electrode handle and electrode tip are directly welding as one.Use the electrode of this direct welding, when product parts is carried out to spot welding, have following some deficiency:
1) adopt direct welding, weld after several products, the temperature of electrode itself can raise gradually, the lower surface 05 of top electrode handle 01 and the upper surface of bottom electrode handle 08 09 easily produce, therefore, have influence on the first working face 04 of upper electrode tip 02 and the second working face 07 depth of parallelism when welding processing of lower electrode tip 06 is too poor, easily cause product defective.
2) adopt direct welding, weld after several products, because the temperature of electrode itself raises gradually, the electrode tip on electrode produces translation or rotation, while directly causing welding processing, there is dislocation and cause that welding position docking is inaccurate, and then cause product defective.
3) adopt direct welding, weld after many products, the temperature of electrode itself can be more and more higher, and the electrode tip on electrode easily comes off, and causes product defective.
There are above three weak points in existing electrode, greatly reduces the first-time qualification rate of product.
Therefore, how solving the low problem of existing spot-wedling electrode solder yield, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
In view of this, the invention provides a kind of spot-wedling electrode, for improving the first-time qualification rate of spot welding product.
In order to address the above problem, the invention provides a kind of spot-wedling electrode, comprise top electrode and bottom electrode, described top electrode comprises top electrode handle and upper electrode tip, described bottom electrode comprises bottom electrode handle and lower electrode tip, described top electrode handle comprises the first cylindrical portion and the first conus portion, described bottom electrode handle comprises the second cylindrical portion and the second conus portion, the end of described the first cylindrical portion is provided with the first dovetail groove, described upper electrode tip is provided with the first dovetail with described the first dovetail groove clamping, and described upper electrode tip is by being fixedly welded on described the first dovetail groove, the end of described the second cylindrical portion is provided with the second dovetail groove, described lower electrode tip is provided with the second dovetail with described the second dovetail groove clamping, and described lower electrode tip is by being fixedly welded on described the second dovetail groove.
Preferably, described the first dovetail groove and described the first dovetail and described the second dovetail groove and described the second dovetail all adopt the silk thread cutting of being careful to process.
Preferably, the two ends of described the first dovetail groove all adopt welding and described upper electrode tip to fix, and the two ends of described the second dovetail groove all adopt welding and described lower electrode tip to fix.
Preferably, the cunning of described the first dovetail and described the first dovetail groove is joined gap and is less than or equal to 0.01mm, and the cunning of described the second dovetail and described the second dovetail groove is joined gap and is less than or equal to 0.01mm.
Preferably, the taper seat of described the first conus portion is less than or equal to the axiality on the face of cylinder of described the first cylindrical portion
the taper seat of described the second conus portion is less than or equal to the axiality on the face of cylinder of described the second cylindrical portion
Preferably, the first working face of described upper electrode tip is less than or equal to 0.015mm to the perpendicularity on the face of cylinder of described the first cylindrical portion, and the second working face of described lower electrode tip is less than or equal to 0.015mm to the perpendicularity on the face of cylinder of described the second cylindrical portion.
Preferably, the first working face of described upper electrode tip is less than 0.015mm to the perpendicularity of the side of described upper electrode tip, and the second working face of described lower electrode tip is less than 0.015mm to the perpendicularity of the side of described lower electrode tip.
Preferably, described top electrode handle and described bottom electrode handle are chromium zirconium copper rod, and described upper electrode tip and described lower electrode tip are molybdenum bar.
Spot-wedling electrode provided by the invention, comprise top electrode and bottom electrode, top electrode comprises top electrode handle and upper electrode tip, bottom electrode comprises bottom electrode handle and lower electrode tip, top electrode handle comprises the first cylindrical portion and the first conus portion, bottom electrode handle comprises the second cylindrical portion and the second conus portion, the end of the first cylindrical portion is provided with the first dovetail groove, upper electrode tip is provided with the first dovetail with the first dovetail groove clamping, and upper electrode tip is by being fixedly welded on the first dovetail groove, the end of the second cylindrical portion is provided with the second dovetail groove, lower electrode tip is provided with the second dovetail with the second dovetail groove clamping, and lower electrode tip is by being fixedly welded on the second dovetail groove.
With respect to the connected mode of direct welding of the prior art, the present invention adopts the fixing connected mode with being welded and fixed combination of dovetail groove by electrode tip and electrode handle.In pinpoint welding procedure, weld after many products, although the temperature of electrode itself raises, but, due to the integrated positioning effect that is subject to oat tail groove structure and fixes and be welded and fixed, top electrode and bottom electrode all can run-off the straight, dislocation (translation or rotation) and the phenomenon such as come off, and improved the first-time qualification rate of spot welding product.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is upper electrode arrangement cutaway view of the prior art;
Fig. 2 is lower electrode arrangement cutaway view of the prior art;
Fig. 3 is the front section view of the top electrode in specific embodiment of the invention scheme;
Fig. 4 is the side sectional view of the top electrode in specific embodiment of the invention scheme;
Fig. 5 is the front section view of the bottom electrode in specific embodiment of the invention scheme;
Fig. 6 is the side sectional view of the bottom electrode in specific embodiment of the invention scheme;
Fig. 7 is the top view of the bottom electrode in specific embodiment of the invention scheme;
In Fig. 1 and Fig. 2:
Top electrode handle-01, upper electrode tip-02, solder joint-03, the first working face-04, lower surface-05, lower electrode tip-06, the second working face-07, bottom electrode handle-08, upper surface-09;
In Fig. 3 to Fig. 7:
Top electrode handle-1, the first cylindrical portion-11, the first conus portion-12, the first solder joint-13, the first dovetail groove-14, upper electrode tip-2, the first reference side-21, the first working face-22, the first dovetail-23, bottom electrode handle-3, the second cylindrical portion-31, the second conus portion-32, the second solder joint-33, the second dovetail groove-34, lower electrode tip-4, the second reference side-41, the second working face-42, the second dovetail-43.
The specific embodiment
Core of the present invention is to provide a kind of spot-wedling electrode, for improving the first-time qualification rate of spot welding product.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 3 to Fig. 7, Fig. 3 is the front section view of the top electrode in specific embodiment of the invention scheme; Fig. 4 is the side sectional view of the top electrode in specific embodiment of the invention scheme; Fig. 5 is the front section view of the bottom electrode in specific embodiment of the invention scheme; Fig. 6 is the side sectional view of the bottom electrode in specific embodiment of the invention scheme; Fig. 7 is the top view of the bottom electrode in specific embodiment of the invention scheme.
In a kind of specific embodiment scheme, the invention provides a kind of spot-wedling electrode, comprise top electrode and bottom electrode, top electrode comprises top electrode handle 1 and upper electrode tip 2, bottom electrode comprises bottom electrode handle 3 and lower electrode tip 4.Top electrode handle 1 comprises the first cylindrical portion 11 and the first conus portion 12, and the periphery of top electrode handle 1 is provided with one section of face of cylinder and one section of taper seat, and the first conus portion 12 is for being mounted on mash welder by top electrode handle 1; Bottom electrode handle 3 comprises the second cylindrical portion 31 and the second conus portion 32, and the periphery of bottom electrode handle 3 is provided with one section of face of cylinder and one section of taper seat, and the second conus portion 32 is for being fixed on mash welder by bottom electrode handle 3.
The end of the first cylindrical portion 11 is provided with the first dovetail groove 14, and upper electrode tip 2 is provided with the first dovetail 23, the first dovetails 23 and connects and fixes in the first dovetail groove 14, and upper electrode tip 2 is also by being fixedly welded on the first dovetail groove 14.The end of the second cylindrical portion 31 is provided with the second dovetail groove 34, and lower electrode tip 4 is provided with the second dovetail 43, the second dovetails 43 and connects and fixes in the second dovetail groove 34, and lower electrode tip 4 is also by being fixedly welded on the second dovetail groove 34.This programme be take bottom electrode as example, as shown in Figure 7, the end of bottom electrode handle 3 is provided with the second dovetail groove 34, when assembling, first the second dovetail 43 of lower electrode tip 4 is inserted in the second dovetail groove 34, then according to Geometrical Tolerance Principle, fix the position of lower electrode tip 4, finally lower electrode tip 4 is welded on to the second dovetail groove 34.The structure of top electrode and assembling mode and bottom electrode are similar, so locate to repeat no more.
With respect to the connected mode of direct welding of the prior art, the present invention adopts the fixing connected mode with being welded and fixed combination of dovetail groove by electrode tip and electrode handle.In pinpoint welding procedure, weld after many products, although the temperature of electrode itself raises, but, due to the integrated positioning effect that is subject to oat tail groove structure and fixes and be welded and fixed, top electrode and bottom electrode all can run-off the straight, dislocation (translation or rotation) and the phenomenon such as come off, and improved the first-time qualification rate of spot welding product.
It should be noted that, dovetail groove in this programme and dovetail structure can adopt as modes such as casting or line cuttings and process and make, because the mechanical processing technique of electrode handle and electrode tip is all poor, adopt conventional machining mode guarantee size and Geometrical Tolerance Principle difficulty larger, therefore, the first dovetail groove 14 in the present invention and the first dovetail 23 and the second dovetail groove 34 and the second dovetail 43 all adopt the silk thread cutting of being careful to process.The silk thread of being careful cutting is a kind of of Wire EDM, is that the fine wire (being called wire electrode) that utilizes continuous moving is made electrode, and workpiece is carried out to pulse spark electric discharge removal metal, excision forming.Because slow feeding linear cutting is to take line electrode to supply continuously the mode of silk, line electrode completes processing in motion process, even if therefore line electrode generation loss also can be supplemented, continuously therefore can improve part processing precision.
In order to guarantee the bonding strength of electrode tip and electrode handle, and simplify electrode structure, preferably, in this programme, the two ends of the first dovetail groove 14 all adopt welding fixing with upper electrode tip 2, and the first solder joint 13 is positioned at the two ends of the first dovetail groove 14; The two ends of the second dovetail groove 34 all adopt welding fixing with lower electrode tip 4, and the second solder joint 33 is positioned at the two ends of the second dovetail groove 34.
Because spot-welding technology requires very high, therefore, very high to the Geometrical Tolerance Principle of top electrode and bottom electrode to the docking location of top electrode and bottom electrode.In order to reduce the form and position tolerance of top electrode and bottom electrode in this programme, make the link position location of electrode tip and electrode handle more accurate, preferably, the cunning of controlling the first dovetail 23 and the first dovetail groove 14 in this programme is joined gap and is less than or equal to 0.01mm, and the cunning of the second dovetail 43 and the second dovetail groove 34 is joined gap and is less than or equal to 0.01mm.
Preferably, take the face of cylinder of the first cylindrical portion 11 is benchmark, and the taper seat of the first conus portion 12 is less than or equal to the axiality on the face of cylinder of the first cylindrical portion 11
take the face of cylinder of the second cylindrical portion 31 is benchmark, and the taper seat of the second conus portion 32 is less than or equal to the axiality on the face of cylinder of the second cylindrical portion 31
Preferably, the perpendicularity on the face of cylinder of 22 pairs of first cylindrical portion 11 of the first working face of upper electrode tip 2 is less than or equal to 0.015mm, and the perpendicularity on the face of cylinder of 42 pairs of second cylindrical portion 31 of the second working face of lower electrode tip 4 is less than or equal to 0.015mm.
Preferably, the perpendicularity of the side of 22 pairs of upper electrode tips 2 of the first working face of upper electrode tip 2 (being the first reference side 21 in Fig. 3) is less than 0.015mm, and the perpendicularity of the side of 42 pairs of lower electrode tips 4 of the second working face of lower electrode tip 4 (being the second reference side 41 in Fig. 5) is less than 0.015mm.
It should be noted that, electrode material is generally the metal materials such as copper alloy, tungsten or molybdenum, and preferably, the top electrode handle 1 in this programme and bottom electrode handle 3 are chromium zirconium copper rod, and upper electrode tip 2 and lower electrode tip 4 are molybdenum bar.
Adopt the spot-wedling electrode that this programme provides to carry out product processing, a delivery-check qualified rate of product obviously improves, and brings up to approximately 99% by original 65%, has meanwhile also greatly guaranteed the serviceability of product.
The present invention adopts the fixing connected mode with being welded and fixed combination of dovetail groove by electrode tip and electrode handle, upper and lower two parts of simultaneously having guaranteed electrode each Geometrical Tolerance Principle when being combined into one, after many products of welding, although the temperature of electrode itself raises, but, due to the integrated positioning effect that is subject to oat tail groove structure and fixes and be welded and fixed, top electrode and bottom electrode all can run-off the straight, dislocation (translation or rotation) and the phenomenon such as come off, and obviously improved the first-time qualification rate of spot welding product.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a spot-wedling electrode, comprise top electrode and bottom electrode, described top electrode comprises top electrode handle (1) and upper electrode tip (2), described bottom electrode comprises bottom electrode handle (3) and lower electrode tip (4), described top electrode handle (1) comprises the first cylindrical portion (11) and the first conus portion (12), described bottom electrode handle (3) comprises the second cylindrical portion (31) and the second conus portion (32), it is characterized in that, the end of described the first cylindrical portion (11) is provided with the first dovetail groove (14), described upper electrode tip (2) is provided with the first dovetail (23) with described the first dovetail groove (14) clamping, and described upper electrode tip (2) is by being fixedly welded on described the first dovetail groove (14), the end of described the second cylindrical portion (31) is provided with the second dovetail groove (34), described lower electrode tip (4) is provided with the second dovetail (43) with described the second dovetail groove (34) clamping, and described lower electrode tip (4) is by being fixedly welded on described the second dovetail groove (34).
2. spot-wedling electrode according to claim 1, it is characterized in that, described the first dovetail groove (14) and described the first dovetail (23) and described the second dovetail groove (34) and described the second dovetail (43) all adopt the silk thread cutting of being careful to process.
3. spot-wedling electrode according to claim 1, it is characterized in that, the two ends of described the first dovetail groove (14) all adopt welding and described upper electrode tip (2) fixing, and the two ends of described the second dovetail groove (34) all adopt welding and described lower electrode tip (4) fixing.
4. spot-wedling electrode according to claim 1, it is characterized in that, described the first dovetail (23) is joined gap with the cunning of described the first dovetail groove (14) and is less than or equal to 0.01mm, and described the second dovetail (43) is joined gap with the cunning of described the second dovetail groove (34) and is less than or equal to 0.01mm.
5. spot-wedling electrode according to claim 4, is characterized in that, the taper seat of described the first conus portion (12) is less than or equal to the axiality on the face of cylinder of described the first cylindrical portion (11)
the taper seat of described the second conus portion (32) is less than or equal to the axiality on the face of cylinder of described the second cylindrical portion (31)
6. spot-wedling electrode according to claim 5, it is characterized in that, first working face (22) of described upper electrode tip (2) is less than or equal to 0.015mm to the perpendicularity on the face of cylinder of described the first cylindrical portion (11), and second working face (42) of described lower electrode tip (4) is less than or equal to 0.015mm to the perpendicularity on the face of cylinder of described the second cylindrical portion (31).
7. spot-wedling electrode according to claim 6, it is characterized in that, first working face (22) of described upper electrode tip (2) is less than 0.015mm to the perpendicularity of the side of described upper electrode tip (2), and second working face (42) of described lower electrode tip (4) is less than 0.015mm to the perpendicularity of the side of described lower electrode tip (4).
8. according to the spot-wedling electrode described in claim 1 to 7 any one, it is characterized in that, described top electrode handle (1) and described bottom electrode handle (3) are chromium zirconium copper rod, and described upper electrode tip (2) and described lower electrode tip (4) are molybdenum bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199119.6A CN103949767A (en) | 2014-05-12 | 2014-05-12 | Spot-welding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199119.6A CN103949767A (en) | 2014-05-12 | 2014-05-12 | Spot-welding electrode |
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| Publication Number | Publication Date |
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| CN103949767A true CN103949767A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410199119.6A Pending CN103949767A (en) | 2014-05-12 | 2014-05-12 | Spot-welding electrode |
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| CN (1) | CN103949767A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775166A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Weld assembly and resistance welder for resistance welder |
| CN108857029A (en) * | 2014-11-03 | 2018-11-23 | 中国航发常州兰翔机械有限责任公司 | Solve the electrode of engine part spot welding coreless |
| TWI689364B (en) * | 2017-10-31 | 2020-04-01 | 財團法人金屬工業研究發展中心 | Electrode rotation welding device and resistance spot welding equipment using the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857029A (en) * | 2014-11-03 | 2018-11-23 | 中国航发常州兰翔机械有限责任公司 | Solve the electrode of engine part spot welding coreless |
| CN107775166A (en) * | 2016-08-31 | 2018-03-09 | 浙江嘉熙科技有限公司 | Weld assembly and resistance welder for resistance welder |
| TWI689364B (en) * | 2017-10-31 | 2020-04-01 | 財團法人金屬工業研究發展中心 | Electrode rotation welding device and resistance spot welding equipment using the same |
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Application publication date: 20140730 |