CN208246133U - Welding jigs and fixtures - Google Patents

Abstract

The utility model provides a kind of welding jigs and fixtures, comprising: ontology, the first clamping element and the second clamping element；First clamping element includes: the first connecting portion for being connected with ontology insulation；The first auxiliary section for being connected with first electrode in welding equipment；First auxiliary section has the first contact surface；Second clamping element includes: the second connecting portion for being connected with ontology insulation；The second auxiliary section for being connected with second electrode in welding equipment；Second auxiliary section has the second contact surface；First clamping element and the second clamping element so that the first contact surface and the second contact surface are contacted with the both side surface in area to be welded respectively, and can clamp to-be-welded pieces from the two sides in area to be welded along the direction relative motion perpendicular to area to be welded.Welding jigs and fixtures provided by the utility model, in welding, the first clamping element and the second clamping element can compress area to be welded, while realizing welding, guarantee that two parts in area to be welded will not generate relative movement, to improve welding quality.

Description

Welding jigs and fixtures

Technical field

The utility model relates to automobile body welding technology more particularly to a kind of welding jigs and fixtures.

Background technique

Vehicle body is one of important composition component of automobile, needs largely to use welding procedure in manufacturing process, and welding becomes Shape will lead to the Streamline of vehicle body from design value, and when running car, air-flow and vehicle body around vehicle body interact, and can increase Add car resistance, to directly affect the aerodynamic performance of vehicle body.

In the prior art, vehicle body is generally welded to each other by multiple plates, and Fig. 1 is the knot of welding procedure in the prior art Structure schematic diagram；Referring to FIG. 1, the first part 1 and the second part 2 are pipe fitting to be welded, the side of the first part 1 and the second part 2 Edge overlaps to form area 6 to be welded；When welding, the first part 1 first is clamped using fixture 5 respectively and the second part 2 leans on The position in nearly area 6 to be welded, then compresses area 6 to be welded using soldering turret, so that the first electrode 3 and second electrode 4 of soldering turret are divided Not with 6 liang of side contacts in area to be welded, welding operation is realized.

Fig. 2 is the structural schematic diagram of welding deformation in the prior art.Incorporated by reference to Fig. 2, due to the first part 1 and the second part 2 the problems such as there are tolerance, rebound or transport deformations in processing or transportational process, lead to first of area 6 to be welded after clamping It there is also gap between part 1 and the second part 2, when welding, when first electrode 3 and second electrode 4 and the first part 1 and After the contact of two parts 2, first electrode 3 and second electrode 4 also can make the first part 1 to the first part 1 and the second part 2 with pressure It is contacted with the second part 2, which can make the first part 1 and the second part 2 deform, and welding can be generated after welding and is become Shape not can guarantee welding quality.

Utility model content

The utility model provides a kind of welding jigs and fixtures, can generate weldering after overcoming welding fixture in the prior art to weld The problem of connecing deformation.

A kind of welding jigs and fixtures of the utility model, comprising: ontology, the first clamping element and the second clamping element.

First clamping element includes: the first connecting portion for being connected with ontology insulation；For with welding equipment The first connected auxiliary section of middle first electrode；First auxiliary section has the first contact surface.

Second clamping element includes: the second connecting portion for being connected with ontology insulation；For with the welding The second connected auxiliary section of second electrode in equipment；Second auxiliary section has the second contact surface.

First clamping element and second clamping element can along the direction relative motion perpendicular to area to be welded so that First contact surface and second contact surface are contacted with the both side surface in the area to be welded respectively, and from described to be welded The two sides in area clamp to-be-welded pieces.

Welding jigs and fixtures as described above, wherein first auxiliary section is equipped with recessed for accommodating the first of first electrode Slot, and the bottom wall of first groove with the first electrode for being in contact.

Welding jigs and fixtures as described above, wherein first auxiliary section also has adjacent with first contact surface First side, first groove also extend through the first side setting.

Welding jigs and fixtures as described above, wherein the first connecting portion is spirally connected with the ontology.

Welding jigs and fixtures as described above, wherein be provided with mounting groove in the first connecting portion；It is arranged on the ontology There is mounting plate；The mounting plate is plugged in the mounting groove；And mounting hole is provided on the mounting plate；The mounting groove Connecting hole is provided on cell wall；Bolt passes through the connecting hole and the mounting hole and nut cooperates, and the bolt with it is described Insulating layer is provided between first connecting portion and between the mounting groove and the mounting plate.

Welding jigs and fixtures as described above, wherein the quantity of the connecting hole be it is multiple, multiple connecting hole intervals are set It sets on the cell wall of the mounting groove；The quantity of the mounting hole be it is multiple, multiple mounting holes are arranged at intervals on the peace In loading board.

Welding jigs and fixtures as described above, wherein the surface in first clamping element towards the area to be welded is equipped with convex It rises, the surface of the protrusion is as first contact surface.

Welding jigs and fixtures as described above, wherein second auxiliary section is equipped with recessed for accommodating the second of second electrode Slot, and the bottom wall of second groove with the second electrode for being in contact.

Welding jigs and fixtures as described above, wherein second auxiliary section also has adjacent with second contact surface Second side, second groove also extend through the second side setting.

Welding jigs and fixtures as described above, wherein first clamping element is copper billet, and second clamping element is also copper Block.

Welding jigs and fixtures provided by the utility model, by the way that the first clamping element and the second clamping element are arranged on the body, the One clamping element includes: first connecting portion and the first auxiliary section；First connecting portion is connected with ontology insulation；Second auxiliary section and welding First electrode is connected in equipment；And first auxiliary section have the first contact surface.Second clamping element includes: second connecting portion and second Auxiliary section；Second connecting portion is connected with ontology insulation；Second auxiliary section is connected with second electrode in welding equipment；And second matches Conjunction portion has the second contact surface.In welding process, the first clamping element and the second clamping element can be relatively moved, so that the first contact Face and the second contact surface are contacted with the both side surface for stating area to be welded respectively, and clamp to-be-welded pieces from the two sides in area to be welded, Electric current can be transmitted to second electrode from first electrode, the first clamping element, area to be welded, the second clamping element, realize welding, can be with Guarantee that two in area to be welded parts will not generate relative movement, welding deformation amount is reduced, to improve welding quality.

Detailed description of the invention

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, it should be appreciated that herein Described specific embodiment is only used for describing and explaining the present invention, and the utility model is not limited to following specific realities Apply mode.

Fig. 1 is the structural schematic diagram of welding procedure in the prior art；

Fig. 2 is the structural schematic diagram of welding deformation in the prior art；

Fig. 3 is the structural schematic diagram of the utility model welding jigs and fixtures；

Fig. 4 is the structural schematic diagram of the first clamping element in Fig. 3；

Fig. 5 is the structural schematic diagram of the second clamping element in Fig. 3.

Description of symbols:

1: the first part；

2: the second parts；

3: first electrode；

4: second electrode；

5: fixture；

6: area to be welded；

7: the first clamping elements；71: the first contact surfaces；72: the first auxiliary sections；721: the first grooves；722: first side； The bottom wall of 723: the first grooves；73: first connecting portion；731: mounting groove；732: mounting plate；733: connecting hole；734: bolt；

8: the second clamping elements；81: the second contact surfaces；82: the second auxiliary sections；821: the second grooves；822: second side； The bottom wall of 823: the second grooves；83: second connecting portion.

Specific embodiment

Vehicle body is one of important composition component of automobile, and vehicle body needs to provide good operating condition to driver, to multiplying Visitor provide it is comfortable take condition, the invasion and influence of vibration, noise, exhaust gas when enabling them to resist running car, also It needs to guarantee traffic safety and mitigates damage sequence, therefore the processing quality of vehicle body and the property relationship of automobile are close.Currently, vehicle It needs largely to use welding procedure in body manufacturing process, welding deformation will lead to the Streamline of vehicle body from design value, work as automobile When driving, the air-flow around vehicle body and vehicle body interact, and will increase car resistance, to directly affect the air force of vehicle body Learn performance.

In the prior art, vehicle body is generally welded to each other by multiple plates, referring to FIG. 1, the first part 1 and the 2nd 0 Part 2 is pipe fitting to be welded, and the first part 1 forms area 6 to be welded together with the overlapping edges of the second part 2；When welding, first divide Not Shi Yong fixture 5 clamp the first part 1 and the second part 2 close to the position in area 6 to be welded, then compressed using soldering turret to be welded Area 6 is met, so that the first electrode 3 and second electrode 4 of soldering turret realize welding operation respectively with 6 liang of side contacts in area to be welded.

Incorporated by reference to Fig. 2, since there are tolerance, rebound or fortune in processing or transportational process for the first part 1 and the second part 2 The problems such as defeated deformation, causes to there is also gap between first part 1 and the second part 2 in area 6 to be welded after clamping, weld When, after first electrode 3 and second electrode 4 and the contact of the first part 1 and the second part 2, first electrode 3 and second electrode 4 The first part 1 and the second part 2 can be made to contact with pressure to the first part 1 and the second part 2, which can make the first part 1 and second part 2 deform, welding deformation can be generated after welding, not can guarantee welding quality.

To solve the above-mentioned problems, the utility model embodiment provides a kind of welding jigs and fixtures, to reduce welding deformation amount, Improve welding quality.

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, it should be appreciated that herein Described specific embodiment is only used for describing and explaining the present invention, and the utility model is not limited to following specific realities Apply mode.

Fig. 3 is the structural schematic diagram of the utility model welding jigs and fixtures；Fig. 4 is the structural representation of the first clamping element in Fig. 3 Figure；Fig. 5 is the structural schematic diagram of the second clamping element in Fig. 3.

Incorporated by reference to Fig. 3 to Fig. 5, the present embodiment provides a kind of welding jigs and fixtures, comprising: ontology, the first clamping element 7 and Two clamping elements 8；First clamping element 7 includes: the first connecting portion 73 for being connected with ontology insulation；For in welding equipment The first connected auxiliary section 72 of one electrode 3；First auxiliary section 72 has the first contact surface 71.Second clamping element 8 include: for The connected second connecting portion 83 of ontology insulation；The second auxiliary section 82 for being connected with second electrode 4 in welding equipment；Second matches Conjunction portion 82 has the second contact surface 81.First clamping element 7 and the second clamping element 8 can be along the direction phases perpendicular to area 6 to be welded To movement, so that the first contact surface 71 and the second contact surface 81 are contacted with the both side surface in area 6 to be welded respectively, and to be welded The two sides in area 8 clamp to-be-welded pieces.

Specifically, welding jigs and fixtures can be applied to the welding between two parts, it is preferable that it can be applied to vehicle body The welding of two composition plate lap-joints.Fig. 3 can be referred to, the first part 1 forms to be welded together with the overlapping edges of the second part 2 Meet area 6, welding jigs and fixtures may include the first clamping element 7 and the second clamping element 8, and the first clamping element 7 and the second clamping element 8 can be with For conductive material, and the two sides in area 6 to be welded can be located at, to compress area 6 to be welded, and respectively with first electrode 3 and second electrode 4 connect, to realize welding.

Welding jigs and fixtures can also include ontology, and the first clamping element 7 and the second clamping element 8 can insulate respectively is connected to this On body.Ontology can be stent-like structure, for the welding operation manually such as soldering turret, can be placed on ground or workbench, And it is kept fixed.For automatic soldering device, ontology can be the rack of automatic soldering device or workbench etc., do not do have herein Body limits.First clamping element 7 is provided with first connecting portion 73, and first connecting portion 73 can connect on the body, and protects with ontology Hold insulation, specific connection type can there are many, such as first connecting portion 73 can be clamped or rivet on the body, and first Insulated connecting piece or insulating coating has can be set in contact surface between clamping element 7 and ontology, to guarantee ontology and the first folder Insulation between tight part 7.Second clamping element 8 is provided with second connecting portion 83, and second connecting portion 83 also can connect on the body, And keep insulating with ontology, specific connection type can there are many, such as second connecting portion 83 can be clamped or be riveted on this On body, and insulated connecting piece or insulating coating has can be set in the contact surface between the second clamping element 8 and ontology, to make ontology Insulation is kept between the second clamping element 8.The material of first clamping element 7 and the second clamping element 8 can there are many, it is preferable that One clamping element 7 is copper billet, and the second clamping element 8 is also copper billet.To enhance conductive effect, automobile body welding quality is improved.

First clamping element, 7 first auxiliary section 72 is formed with the first contact surface 71 on first auxiliary section 72.First contact surface 71 It can be contacted with area 6 to be welded, to apply clamping force to area 6 to be welded.First contact surface 71 can be and 6 table of area to be welded The shape that face shape matches, such as when the part in area 6 to be welded is plane tabular structure, the first contact surface 71 can be flat Face, when the part in area 6 to be welded is arc, the first contact surface 71 can be the cambered surface to match with arc, do not do have herein Body limits.First auxiliary section 72 can be used for contacting with first electrode 3, the shape of the first auxiliary section 72 can there are many, such as First auxiliary section 72 can be plane, curved surface or the raised points etc. contacted with first electrode 3, be not specifically limited herein.

Second clamping element 8 includes the second auxiliary section 82, and the second contact surface 81, the second contact are formed on the second auxiliary section 82 It face 81 can be with another side contacts in area 6 to be welded, to apply clamping force to area 6 to be welded.Second contact surface 81 can be The shape matched with 6 surface shape of area to be welded, such as when the part in area 6 to be welded is plane tabular structure, second is connect Contacting surface 81 can be plane, and when the part in area 6 to be welded is arc, the second contact surface 81 can be the arc to match with arc Face is not specifically limited herein.Second auxiliary section 82 can be used for contacting with second electrode 4, and the shape of the second auxiliary section 82 can There are many, such as the second auxiliary section 82 can be plane, curved surface or the raised points etc. contacted with second electrode 4, not do herein It is specific to limit.

In addition, the both side surface in area 6 to be welded forms surface to be welded, the direction perpendicular to area 6 to be welded can be vertical In the direction of surface to be welded.First clamping element 7 and the second clamping element 8 are located at the two sides in area to be welded, and the first clamping element 7 can be with Opposite second clamping element 8 moves；Preferably, 8 centerline collineation of the first clamping element 7 and the second clamping element, the two can be along centers The direction relative motion of line is to compress area 6 to be welded, specifically there are many motion modes, for example, the first clamping element 7 can be slided Set on ontology, the second clamping element 8 can be fixed on the body, and the first clamping element 7 can be slided relative to ontology, when the first clamping When part 7 is mobile towards the second clamping element 8, gap between the two can be reduced, to compress area 6 to be welded；For another example, the first folder Tight part 7 can be fixed on the body, and the second clamping element 8 can be slidedly arranged on ontology, and the second clamping element 8 can be sliding relative to ontology It is dynamic, when the second clamping element 8 is mobile towards the first clamping element 7, gap between the two can be reduced, to compress area to be welded 6.It can be understood that the first clamping element 7 and the second clamping element 8 can also be all slidedly arranged on ontology, and can be along centerline direction Opposite or relative movement, is not specifically limited herein.Also, above-mentioned cunning, which sets mode, to be structure common in the art, Such as the type of attachment etc. of screw-driven or sliding rail and the sliding slot cooperation by external screw thread and screw-internal thread fit.

It is fixed with the second clamping element 8 in the present embodiment, for the sliding of the first clamping element 7, when welding, first by the first part 1 It overlaps to form area 6 to be welded with the second part 2, then drives the first clamping element 7 mobile relative to the second clamping element 8, make The first contact surface 71 and the second contact surface 81 two side contacts with area 6 to be welded respectively are obtained, to clamp area 6 to be welded.First One end of electrode 3 and second electrode 4 can be connect with welding equipment respectively, then by first electrode 3 away from the another of welding equipment One end is contacted with the first auxiliary section 72, and the other end by second electrode 4 away from welding equipment is contacted with the second auxiliary section 82, electrode After energization, charge flows to second electrode 4 through the first clamping element 7, area to be welded 6, the second clamping element 8 from first electrode 3, forms weldering Electric current is connect, so that the first part 1 and the second part 2 be welded together.Middle fixture 5 clamps the first part compared to the prior art 1 and second part 2 close to the position in area 6 to be welded, then area 6 to be welded is compressed using soldering turret, so that the first electricity of soldering turret Pole 3 and second electrode 4 respectively with 6 liang of side contacts in area to be welded, thus the method for realizing its welding, due to 7 He of the first clamping element Area 6 to be welded can directly be fixed and be clamped to second clamping element 8, and fixed effect is more preferable, and first electrode 3 and second electrode 4 are treated The active force of welding section 6 will not make the first part 1 and the second part 2 deform, and deform smaller after welding, and welding quality is also more Add.

Welding jigs and fixtures provided in this embodiment, by being arranged the first clamping element and the second clamping element on the body, first Clamping element includes: first connecting portion and the first auxiliary section；First connecting portion is connected with ontology insulation；Second auxiliary section is set with welding Standby middle first electrode is connected；And first auxiliary section have the first contact surface.Second clamping element includes: that second connecting portion and second are matched Conjunction portion；Second connecting portion is connected with ontology insulation；Second auxiliary section is connected with second electrode in welding equipment；And second cooperates Portion has the second contact surface.In welding process, the first clamping element and the second clamping element can be relatively moved, so that the first contact surface It is contacted respectively with the both side surface for stating area to be welded with the second contact surface, and clamps to-be-welded pieces, electricity from the two sides in area to be welded Stream can be transmitted to second electrode from first electrode, the first clamping element, area to be welded, the second clamping element, realize welding, Ke Yibao Relative movement will not be generated by demonstrate,proving two in area to be welded parts, welding deformation amount be reduced, to improve welding quality.

Further, a kind of preferred embodiment as the first clamping element 7, the first auxiliary section 72 are equipped with for accommodating the first electricity First groove 721 of pole 3, and the bottom wall 723 of the first groove with first electrode 3 for being in contact.

Specifically, the first clamping element 7 may include the first auxiliary section 72, and the bottom surface of the first auxiliary section 72 can connect for first Contacting surface 71, the first auxiliary section 72 can be recessed downwards to form the first groove 721 away from the top surface of bottom surface, and the first groove 721 can be with The first auxiliary section is constituted, first electrode 3 can protrude into the first groove 721 and contact with the bottom wall of the first groove 723, to guarantee The contact effect of first electrode 3 and the first auxiliary section 72 increases the intensity of welding current, improves welding effect.

Further, the first auxiliary section 72 also has the first side 722 adjacent with the first contact surface 71, the first groove 721 also extend through the setting of first side 722.

Specifically, the first auxiliary section 72 can be four prism type structure, and both ends can be respectively top and bottom, side Face may include first side 722, and the first groove 721 also extends through first side 722.Preferably, the cell wall of the first groove 721 is Arc enhances fixed effect so that the shape with electrode matches.When welder is soldering turret, first electrode 3 and the second electricity Pole 4 is fixed on the end of soldering turret, interferes between soldering turret and the first clamping element 7 in order to prevent, and the first groove 721 can run through First side 722, to adapt to different types of welder.

In addition, first connecting portion 73 is spirally connected with ontology.Specifically, first connecting portion 73 can be threaded hole, and screw can be with Cooperate across ontology and threaded hole, to simplify connection type, improves installation effectiveness.

As a kind of preferred embodiment of first connecting portion 73, mounting groove 731, every mounting groove are provided in first connecting portion 73 Connecting hole 733 is provided on 731 cell wall；Mounting plate 732 is provided on ontology, mounting plate 732 is plugged in mounting groove 731, And mounting hole is provided on mounting plate 732；Bolt 734 passes through connecting hole 733 and mounting hole and nut cooperates, and bolt 734 with Insulating layer is provided between first connecting portion 73 and between mounting groove 731 and mounting plate 732.

Specifically, mounting groove 731 has can be set in first connecting portion 73, and mounting groove 731 can set to run through from top to bottom It sets, mounting plate 732 is provided on ontology, mounting groove 731 can be inserted in mounting plate 732, and is provided with connecting hole on mounting groove 731 733, mounting hole is provided on mounting plate 732, bolt 734 can pass through connecting hole 733 and mounting hole and nut cooperates, thus real Existing first clamping element 7 is fixedly connected with ontology, and structure is simple, easy to accomplish, good fixing effect.In addition, bolt 734 and first It is provided with insulating layer between interconnecting piece 73 and between mounting groove 731 and mounting plate 732, realizes insulation connection, insulation layer structure Simply, easy to accomplish.

Further, the quantity of connecting hole 733 is multiple, and multiple connecting holes 733 are arranged at intervals on the cell wall of mounting groove 731 On；The quantity of mounting hole be it is also multiple, multiple mounting holes are arranged at intervals on mounting plate 732, to enhance fixed effect.It is preferred that The quantity of ground, connecting hole 733 and mounting hole can be 4.

In addition, the surface in the first clamping element 7 towards area 6 to be welded is equipped with protrusion, raised surface is as the first contact surface 71, so that the bottom surface of the first auxiliary section 72 protrudes from the bottom surface of first connecting portion 73, reduce the face of the first contact surface 71 Product reduces welding resistance, improves welding effect.

On the basis of the above embodiments, the second auxiliary section 82 is equipped with the second groove 822 for accommodating second electrode 4, And second groove bottom wall 823 for being in contact with second electrode 4.

Specifically, the second clamping element 8 may include the second auxiliary section 82, and the top surface of the second auxiliary section 82 can be second Contact surface 81, the second auxiliary section 82 can be recessed to form the second groove 821 upwards away from the bottom surface of top surface, the second groove 821 May be constructed the second auxiliary section, second electrode 4 can protrude into the second groove 821 and contact with the bottom wall of the second groove 823, thus The contact effect for guaranteeing second electrode 4 and the second auxiliary section 82 increases the intensity of welding current, improves welding effect.Second folder The structure of tight part 8 can be different or identical from the first clamping element 7, it is preferable that the second clamping element 8 can be with the first clamping element 7 relative to area 6 to be welded plane be symmetrical arranged, thus simplify process.

Further, the second auxiliary section 82 also has the second side 822 adjacent with the second contact surface 81, the second groove 821 also extend through the setting of second side 822.

Specifically, the second auxiliary section 82 can be four prism type structure, and both ends can be respectively top and bottom, side Face may include second side 822, and the second groove 821 also extends through second side 822.When welder is soldering turret, the first electricity Pole 3 and second electrode 4 are fixed on the end of soldering turret, interfere between soldering turret and the second clamping element 8 in order to prevent, the second groove 821 can run through second side 822, to adapt to different types of welder.

In addition, second connecting portion 82 is spirally connected with ontology, to simplify connection type, installation effectiveness is improved.Specifically, second Mounting groove 731 and connecting hole 733 has also can be set in interconnecting piece 83, specifically can be with reference to above-mentioned first connecting portion 73 and ontology Connection type embodiment, details are not described herein.

In the present invention, term " first ", " second " are used only for the purpose of description, and should not be understood as instruction or Imply relative importance；The indicating positions such as term " on ", "lower", "top", "bottom" or positional relationship are side based on the figure Position or positional relationship are merely for convenience of description the utility model, rather than the device or original part of indication or suggestion meaning are necessary With specific orientation, it is constructed and operated in a specific orientation；Unless otherwise clearly defined and limited, " installation ", " connection " Equal terms are broadly understood, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection. For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood as the case may be Meaning.

In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implementation The description of mode ", " example ", " specific example " or " some examples " etc. means embodiment or example is combined to describe specific Feature, structure, material or feature are contained at least one embodiment or example of the utility model.In this specification In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of welding jigs and fixtures characterized by comprising ontology, the first clamping element and the second clamping element；

First clamping element includes: the first connecting portion for being connected with ontology insulation；For in welding equipment The first connected auxiliary section of one electrode；First auxiliary section has the first contact surface；

Second clamping element includes: the second connecting portion for being connected with ontology insulation；For with the welding equipment The second connected auxiliary section of middle second electrode；Second auxiliary section has the second contact surface；

First clamping element and second clamping element can be along the direction relative motions perpendicular to area to be welded, so that described First contact surface and second contact surface are contacted with the both side surface in the area to be welded respectively, and from the area to be welded Two sides clamp to-be-welded pieces.

2. welding jigs and fixtures according to claim 1, which is characterized in that first auxiliary section is equipped with for accommodating first First groove of electrode, and the bottom wall of first groove with the first electrode for being in contact.

3. welding jigs and fixtures according to claim 2, which is characterized in that first auxiliary section also has and described first The adjacent first side of contact surface, first groove also extend through the first side setting.

4. welding jigs and fixtures according to claim 3, which is characterized in that the first connecting portion is spirally connected with the ontology.

5. welding jigs and fixtures according to claim 4, which is characterized in that be provided with mounting groove in the first connecting portion；

Mounting plate is provided on the ontology；The mounting plate is plugged in the mounting groove；And it is provided on the mounting plate Mounting hole；Connecting hole is provided on the cell wall of the mounting groove；Bolt passes through the connecting hole and the mounting hole is matched with nut It closes, and is provided with insulating layer between the bolt and the first connecting portion and between the mounting groove and the mounting plate.

6. welding jigs and fixtures according to claim 5, which is characterized in that the quantity of the connecting hole is multiple, Duo Gesuo Connecting hole is stated to be arranged at intervals on the cell wall of the mounting groove；The quantity of the mounting hole be it is multiple, between multiple mounting holes Every setting on the mounting plate.

7. welding jigs and fixtures according to claim 6, which is characterized in that first clamping element is towards the area to be welded Surface be equipped with protrusion, the surface of the protrusion is as first contact surface.

8. welding jigs and fixtures according to claim 1-7, which is characterized in that second auxiliary section is equipped with and is used for The second groove of second electrode is accommodated, and the bottom wall of second groove with the second electrode for being in contact.

9. welding jigs and fixtures according to claim 8, which is characterized in that second auxiliary section also has and described second The adjacent second side of contact surface, second groove also extend through the second side setting.

10. welding jigs and fixtures according to claim 1-7, which is characterized in that first clamping element is copper billet, Second clamping element is also copper billet.