CN203509328U - Spot welding fixture for preventing nugget skewing - Google Patents
Spot welding fixture for preventing nugget skewing Download PDFInfo
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- CN203509328U CN203509328U CN201320503881.XU CN201320503881U CN203509328U CN 203509328 U CN203509328 U CN 203509328U CN 201320503881 U CN201320503881 U CN 201320503881U CN 203509328 U CN203509328 U CN 203509328U
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- spot welding
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- nugget
- eddy current
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Abstract
The utility model discloses a spot welding fixture for preventing nugget skewing, and belongs to the field of spot welding fixtures. The fixture comprises a clamp, a positioning block, a base, supporting devices and a positioning base, wherein the clamp is located on one side of the upper surface of the base, the two supporting devices are located on the two sides of the lower surface of the base respectively, the Z-type positioning block is located on one side of the upper surface of the base, and the positioning base is located in the center of the upper surface of the base. The fixture further comprises a vortex heater, wherein the vortex heater is located in the middle of the lower surface of the base. By using the fixture, a workpiece can be directly heated by a worker, the workpiece can be welded after being heated, and therefore the fixture has the advantages of being convenient to operate, simple in structure, reasonable in design and easy to manufacture, and the cost is reduced.
Description
Technical field
The invention belongs to spot welding fixture (SWFX) field, specifically, relate to a kind of spot welding fixture (SWFX) that prevents nugget skew.
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.The indivedual means of spot welds on the contact-making surface of joint weldment.Spot welding requires metal will have good plasticity.Spot-wedling electrode is the strength member that guarantees point quality, and its major function has: (1) is to beam current through work-piece; (2) to workpiece transmission of pressure; (3) lead rapidly the heat of loose weld zone.Spot welding is divided into direct welding and the large class of indirect welding two conventionally.During direct welding, electrode is by two side direction weld feeds of workpiece.Typical direct welding mode is the most frequently used mode, and at this moment all there is electrode impression the both sides of workpiece.The conductive plate of large bonding area is done bottom electrode, can eliminate or alleviate like this impression of lower work piece.Be usually used in the spot welding of decorative panel.Weld the direct welding of two or more spot welding simultaneously, use a transformer and each electrode is in parallel, at this moment, the impedance of all current paths must be substantially equal, and the surface state of each welding position, material thickness, electrode pressure all need identical, guarantee is basically identical by the electric current of each solder joint, so adopt the two-sided multiple spot welding of a plurality of transformers.
Spot welding need to complete by fixture, for example Chinese Patent Application No. 201110442055.4, within open day, be within on 07 08th, 2012, to disclose the patent application document that a name is called a kind of spot welding fixture (SWFX) and spot-welding technology, this invention relates to a kind ofly can avoid rosin joint, dry joint and fried fiery phenomenon, and the spot welding fixture (SWFX) that uses of the spot-welding technology with higher welding efficiency, comprise jig main body and be located at battery core rest area and the fuse rest area on described jig main body, between described battery core rest area and fuse rest area, being provided with and keeping away a hole.With respect to prior art, this inventive point welding clamp can be good at locating the position of fuse and metal tape, and can adjust the height of capillary, improves point quality, reduces failure welding rate, boosts productivity, cost-saving.This patent is exactly a kind of spot welding fixture (SWFX), and the development of these fixtures has brought very large convenience to people's productive life, has also improved production efficiency, and workman operates these fixtures, easily, but also has inconvenient place to need to improve.For example, when carrying out not equal thickness or different materials spot welding, nugget will be asymmetric with its interface, but to one side skew of slab or conduction, poor thermal conductivity, the result of skew will reduce thin or conduction, workpiece penetration rate that thermal conductivity is good, and Joint Strength reduces.Nugget skew is by two workpiece heat production and radiating condition identical causing not.When thickness does not wait, thick resistance is large, interface ionization electrode is far away on one side, therefore heat production is many, heat radiation is few, causes thick of nugget deflection; When material is different, it is difficult that the material heat production of conduction, poor thermal conductivity is easily dispelled the heat, therefore nugget is also partial to this material.And in order to prevent nugget skew, in advance workpiece being carried out to preheating is one of very feasible way.But prior art needs a lot of technology and steps to workpiece preheating, has not only wasted time cost, has also increased cost of labor.
Summary of the invention
the problem that 1, will solve
, there is and adopt existing heater to heat the problem that program is complicated, cost is high in the situation that welds existing nugget skew for prior art mid point, the invention provides a kind of spot welding fixture (SWFX) that prevents nugget skew.
2, technical scheme
In order to reach object of the present invention, the present invention adopts following technical scheme:
A spot welding fixture (SWFX) that prevents nugget skew, comprises clamp, locating piece, base, bracing or strutting arrangement and positioning seat, and described clamp is positioned at a side of base upper surface; Described bracing or strutting arrangement has two, lays respectively at the both sides of base lower surface; Described locating piece is positioned at a side of base upper surface; Described locating piece is " Z " type; Described positioning seat is positioned at the centre of base upper surface; Also comprise eddy current heater, described eddy current heater is positioned at the lower surface middle part of base.
Preferably, the power of described eddy current heater is 100-500 watt.
3, beneficial effect
Than prior art, beneficial effect of the present invention is:
(1) the present invention includes clamp, locating piece, base, bracing or strutting arrangement and positioning seat, clamp is positioned at a side of base upper surface, and bracing or strutting arrangement has two, lays respectively at the both sides of base lower surface; Locating piece is positioned at a side of base upper surface; Positioning seat is positioned at the centre of base upper surface; Also comprise eddy current heater, eddy current heater is positioned at the lower surface middle part of base, like this when being needed preheating by the workpiece of spot welding, directly start eddy current heater, workpiece is heated, heating fast, and heat and completely weld, avoid the waste of energy, reduce costs;
(2) power of eddy current heater of the present invention is 100-500 watt, be applicable to processing miniature parts, power is crossed conference electric welding machine is caused to damage, so power can not be excessive, the too small effect that does not have heating, and power selection 100-500 watt can complete the heating to workpiece, impaired loci welding machine not again;
(3) the present invention is simple in structure, easy to use, reasonable in design, cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, clamp; 2, locating piece; 3, base; 4, eddy current heater; 5, bracing or strutting arrangement; 6, positioning seat.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further described.
As shown in Figure 1, a kind of spot welding fixture (SWFX) that prevents nugget skew, comprises clamp 1, locating piece 2, base 3, bracing or strutting arrangement 5 and positioning seat 6, and described clamp 1 is positioned at a side of base 3 upper surfaces; Described bracing or strutting arrangement 5 has two, lays respectively at the both sides of base 3 lower surfaces; Described locating piece 2 is positioned at a side of base 3 upper surfaces; Described locating piece 2 is " Z " type; Described positioning seat 6 is positioned at the centre of base 3 upper surfaces; Also comprise eddy current heater 4, described eddy current heater 4 is positioned at the lower surface middle part of base 3.During use, first start eddy current heater 4, after waiting workpiece heating, start welding; The power of eddy current heater 4 is 280 watts.
With embodiment 1, difference is that the power of eddy current heater 4 is 500 watts.
With embodiment 1, difference is that the power of eddy current heater 4 is 100 watts.
Claims (2)
1. a spot welding fixture (SWFX) that prevents nugget skew, comprises clamp (1), locating piece (2), base (3), bracing or strutting arrangement (5) and positioning seat (6), and described clamp (1) is positioned at a side of base (3) upper surface; Described bracing or strutting arrangement (5) has two, lays respectively at the both sides of base (3) lower surface; Described locating piece (2) is positioned at a side of base (3) upper surface; Described locating piece (2) is " Z " type; Described positioning seat (6) is positioned at the centre of base (3) upper surface; It is characterized in that: also comprise eddy current heater (4), described eddy current heater (4) is positioned at the lower surface middle part of base (3).
2. a kind of spot welding fixture (SWFX) that prevents nugget skew according to claim 1, is characterized in that: the power of described eddy current heater (4) is 100-500 watt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503881.XU CN203509328U (en) | 2013-08-19 | 2013-08-19 | Spot welding fixture for preventing nugget skewing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320503881.XU CN203509328U (en) | 2013-08-19 | 2013-08-19 | Spot welding fixture for preventing nugget skewing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203509328U true CN203509328U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320503881.XU Expired - Fee Related CN203509328U (en) | 2013-08-19 | 2013-08-19 | Spot welding fixture for preventing nugget skewing |
Country Status (1)
| Country | Link |
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| CN (1) | CN203509328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433613A (en) * | 2013-08-19 | 2013-12-11 | 芜湖奕辰模具科技有限公司 | Spot welding fixture capable of preventing nugget from shifting |
-
2013
- 2013-08-19 CN CN201320503881.XU patent/CN203509328U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433613A (en) * | 2013-08-19 | 2013-12-11 | 芜湖奕辰模具科技有限公司 | Spot welding fixture capable of preventing nugget from shifting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140819 |
|
| EXPY | Termination of patent right or utility model |