CN212977304U

CN212977304U - Welding tool

Info

Publication number: CN212977304U
Application number: CN202021098657.3U
Authority: CN
Inventors: 厍广智; 周振; 谭双
Original assignee: Ningbo Aux Electric Co Ltd; Ningbo Aux Intelligent Commercial Air Conditioning Manufacturing Co Ltd
Current assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-16
Anticipated expiration: 2030-06-15

Abstract

The utility model provides a welding frock, including fixed part, supporting part and clamping part, fixed part and clamping part respectively with the both ends fixed connection of supporting part, the fixed part be used for with workstation fixed connection, the clamping part is used for the centre gripping work piece, the supporting part can be crooked and flexible. In the use, with fixed part fixed mounting on the frock bench, fix the work piece on the clamping part, through crooked and flexible regulation supporting part, change the position and the orientation of work piece, be convenient for carry out welding operation to the work piece, for the welding of hand work piece among the prior art, have higher stability, can improve welded accuracy, reduce the work load, reduce the cost of labor to reduce the loss that welding error caused.

Description

Welding tool

Technical Field

The application relates to the technical field of tools, in particular to a welding tool.

Background

When two wares of air conditioner and other pipe fittings weld, adopt all kinds of frocks usually to ensure that the welding is accurate, when welding filing and ripe pipeline, can use existing frock, adopt artifical hand-holding usually to pipeline trial-manufacturing in the new flat-open sending, rely on workman's experience etc. to guarantee its accuracy, often be difficult to control to complicated angle pipeline, factors such as the depth of insertion unstability during the welding to cause the waste to the cost of labor.

SUMMERY OF THE UTILITY MODEL

The application aim at provides a welding frock for solve among the prior art hand work piece welding accuracy low, the big problem of manual work volume.

Therefore, the application provides a welding frock, including fixed part, supporting part and clamping part, the fixed part with the clamping part respectively with the both ends fixed connection of supporting part, the fixed part be used for with workstation fixed connection, the clamping part is used for the centre gripping work piece, the supporting part can be crooked and flexible.

The application provides a welding frock, in the use, with fixed part fixed mounting at the frock bench, fix the work piece on the clamping part, through crooked and flexible regulation supporting part, change the position and the orientation of work piece, be convenient for carry out welding operation to the work piece, for the welding of hand work piece among the prior art, have higher stability, can improve welded accuracy, reduce the work load, reduce the cost of labor to reduce the loss that welding error caused.

In one possible embodiment of the present application, the support portion is of a rod-like structure and has plasticity.

With the above possible embodiment of the present application, the support portion is made of, for example, a spring structure made of plastic metal, and the plastic metal is made of, for example, wrought iron, aluminum, and the like, and can be bent arbitrarily and expanded and contracted, and can maintain the deformed shape after the bending and expansion and contraction deformation, and can stably support the workpiece, so that the workpiece can maintain the optimum welding position and the optimum welding angle.

In one possible embodiment of the present application, an angle indicating device for indicating a bending angle of the supporting portion is connected to the fixing portion.

Through the above possible implementation manner of the application, in the process of bending the bending angle of the supporting part, the bending angle of the supporting part can be observed through the angle indicating device, so that the supporting part can be conveniently and visually and accurately bent and adjusted. For example, when welding the workpiece a, the angle indicating device records the angle of the corresponding bending of the support as α, when welding the workpiece B, the angle indicating device records the angle of the corresponding bending of the support as β, when switching the welding between the workpieces a and B, the support can be correspondingly bent according to the recorded α and β, when welding the workpiece a, the support is bent by the angle α, and when welding the workpiece B, the support is bent by the angle β, so that the bending adjustment of the support can be completed more quickly and accurately.

In one possible embodiment of the application, the angle indicating means comprises a first dial having first angle graduations, a starting one of which is aligned parallel to the central axis of the support.

Through the above possible implementation manner of the present application, the first angle dial may be set to be a semicircular plate-shaped structure, dots of the first scale marks are located on a straight edge of the first angle dial, the straight edge of the first angle dial is vertically and fixedly connected with the fixing portion, one end of the supporting portion, which is far away from the clamping portion, is vertically and fixedly connected with the fixing portion, and the initial angle marks may be set to be zero degrees or 90 degrees. Parallel means that when the support portion is not bent, the start angle scale lines are parallel to the central axis of the support portion; the alignment means that the plane of the central axis of the support part and the start angle scale mark is perpendicular to the first angle scale. After the first support portion is bent in a direction parallel to the first angle scale, the angle at which the support portion is bent in a direction parallel to the first angle scale can be read by the first angle scale.

In a possible embodiment of the application, the angle indicating means comprises a second dial having second angle graduations, the first dial being perpendicular to the second dial, a starting one of the second angle graduations being aligned parallel to the central axis of the support.

Through the above possible embodiment of the present application, the second angle dial may be set to a semicircular plate-shaped structure, the first angle dial is perpendicular to the second angle dial, dots of the second scale marks are located on a straight edge of the second dial, a straight edge of the second angle dial is vertically and fixedly connected with the fixing portion, one end of the supporting portion, which is far away from the clamping portion, is vertically and fixedly connected with the fixing portion, and the initial angle marks may be set to zero degrees or 90 degrees. Parallel means that when the support portion is not bent, the start angle scale lines are parallel to the central axis of the support portion; the alignment means that the plane of the central axis of the support part and the initial angle scale mark is perpendicular to the second angle scale. After bending the second support portion in a direction parallel to the second angle scale, the angle at which the support portion is bent in a direction parallel to the second angle scale can be read by the second angle scale.

By reading the angle of bending of the support indicated by the first and second angle dials, the spatial bending angle of the support can be read.

In a possible embodiment of the present application, a bayonet is provided on the fixing portion, a fastening member is connected to the fixing portion, and the fastening member can extend into the bayonet in a direction perpendicular to the direction of the bayonet.

With the above possible embodiments of the present application, the bayonet may be formed in an Contraband shape, and the fastening member may be a fastening bolt or a screw, and the fastening member is screwed with the fixing portion. The workstation is the steel sheet mesa usually, during the installation, with the bayonet socket joint on the workstation edge, then screws the fastener, makes the fastener compress tightly the workstation to fix the fixed part on the workstation, it is convenient to install, and stability is high.

In a possible embodiment of the present application, the clamping portion includes a first clamping member, a second clamping member and an elastic member, the first clamping member is fixedly connected to the supporting portion, the first clamping member and the second clamping member are respectively connected to the elastic member, the second clamping member can move toward a direction close to or away from the first clamping member, and the elastic potential energy of the elastic member gradually increases when the second clamping member moves toward a direction away from the first clamping member.

Through the above-mentioned possible embodiment of this application, break first holder and second holder off with the hand, elastic component elastic potential energy crescent simultaneously presss from both sides the work piece and establishes between first holder and second holder, and after the loose hand, elastic potential energy was released gradually to the elastic component and promotes first holder and second holder and draw close the tight work piece each other.

In a possible embodiment of the present application, a first groove is provided on a surface of the first clamping member adjacent to the second clamping member.

Through the above-mentioned possible embodiment of this application, break off the back with first holder and second holder off with the fingers and thumb, place the work piece in first recess, the bottom surface and the side of first recess can restrict the degree of freedom of the three direction of work piece, are convenient for fix a position the work piece, then loosen the second holder again, and the elastic component promotes the direction motion of second holder towards being close to first holder, compresses tightly the work piece in first recess.

In a possible embodiment of the present application, a surface of the second clamping member adjacent to the first clamping member is provided with a second groove.

Through the above possible embodiment of this application, first holder draws close the back with the second holder, and first recess and second recess amalgamation together constitute an annular groove, can carry out 360 degrees restraints to the work piece, improve the clamping stability to the work piece.

In one possible embodiment of the present application, the first groove and the second groove are arc-shaped grooves, and a radius of the first groove is the same as a radius of the second groove.

Through the above-mentioned possible embodiment of this application, in pipe fitting welding process, the outer wall that the pipe fitting can be centre gripping to the arc wall improves the centre gripping stability to the pipe fitting, and when the outer wall radius of pipe fitting and the radius of first recess and second recess is the same, laminating pipe fitting outer wall that first recess and second recess can be inseparabler.

In a possible embodiment of the present application, the first clamping member is detachably connected to the support portion.

Through the above-mentioned possible embodiment of this application, the clamping part can be dismantled from the supporting part, is convenient for change the clamping part that corresponds according to the work piece of difference, for example, first recess and the amalgamation of second recess on the clamping part form circular centre gripping mouth, and the centre gripping mouth diameter of different clamping parts is 0.7cm, 1cm, 1.4cm, 1.6cm respectively, when welding diameter is 1 cm's pipe fitting, changes the clamping part that is 1cm for centre gripping mouth diameter.

In a possible embodiment of the application, the first clamping member is rotationally connected to the second clamping member.

Through the above possible implementation manner of the present application, the rotation central axes of the first clamping member and the second clamping member are located at one side of the clamping portion, for example, at one side of the first groove, and the second clamping member is pulled by hand in the direction away from the first clamping member, so that the second clamping member rotates in the direction away from the first clamping member, and the workpiece is conveniently placed between the first clamping member and the second clamping member. The elastic part adopts a torsional spring, one end of the torsional spring is connected with the first clamping part, the other end of the torsional spring is connected with the second clamping part, the central axis of the torsional spring is parallel to the central axis of the second clamping part rotating relative to the first clamping part, when the second clamping part rotates towards the direction far away from the first clamping part, the elastic potential energy of the torsional spring is gradually increased, the second clamping part is loosened after the workpiece is placed between the first clamping part and the second clamping part, the torsional spring releases the elastic potential energy to push the second clamping part towards the first clamping part, so that the workpiece is clamped by the second clamping part and the first clamping part, and after the workpiece is clamped by the second clamping part and the first clamping part, the torsional spring still has the tendency of releasing the elastic potential energy, the second clamping part is pressed on the workpiece towards the direction close to the first clamping part, thereby pre-tightening the workpiece and improving the stability of clamping the workpiece.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a front view of a welding tool in an embodiment of the present application;

FIG. 2 is a left side view of the welding tooling in an embodiment of the present application;

FIG. 3 is a front view of a clamp portion in an embodiment of the present application;

FIG. 4 is a bottom view of the clip portion in the embodiment of the present application;

FIG. 5 is a schematic structural view of an elastic member according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a fixing portion in the embodiment of the present application;

FIG. 7 is a schematic view of a connection structure between the angle indicating device and the fixing portion in the embodiment of the present application;

fig. 8 is a right side view of fig. 7.

Description of reference numerals:

100. a fixed part; 110. a bayonet; 120. a fastener;

200. a clamping portion; 210. a first clamping member; 220. a second clamping member; 230. an elastic member; 240. a clamping port; 241. a first groove; 242. a second groove;

300. a support portion;

400. an angle indicating device; 410. a first dial; 411. a first angle scale mark; 420. a second dial; 421. second angle scale lines.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Wherein like parts are designated by like reference numerals. It should be noted that, as used in the following description, the terms "front," "rear," "left," "right," "upper," "lower," "bottom" and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. The dotted lines in the drawing are the outlines that are occluded by the part.

FIG. 1 is a front view of a welding tool in an embodiment of the present application; FIG. 2 is a left side view of the welding tooling in an embodiment of the present application; fig. 3 is a front view of the clip portion 200 in the embodiment of the present application; fig. 4 is a bottom view of the clip portion 200 in the embodiment of the present application; fig. 5 is a schematic structural diagram of the elastic member 230 in the embodiment of the present application; fig. 6 is a schematic structural diagram of the fixing portion 100 in the embodiment of the present application; FIG. 7 is a schematic view of a connection structure between the angle indicating device 400 and the fixing portion 100 according to an embodiment of the present disclosure; fig. 8 is a right side view of fig. 7.

As described in the background art, when welding two air conditioners and other pipe fittings, various tools are generally adopted to ensure accurate welding, when welding filed and mature pipelines, the existing tools can be used, manual holding is generally adopted for trial production of the pipelines in new flat-open transmission, the accuracy of the pipelines is ensured by virtue of the experience of workers and the like, the pipelines with complex angles are often difficult to control, the insertion depth is unstable during welding, and the like, and the labor cost is wasted.

In order to solve the above technical problem, the present embodiment provides a welding tool, as shown in fig. 1 and fig. 2, including a fixing portion 100, a supporting portion 300, and a clamping portion 200, where the fixing portion 100 and the clamping portion 200 are respectively fixedly connected to two ends of the supporting portion 300, the fixing portion 100 is used for fixedly connecting to a workbench, the clamping portion 200 is used for clamping a workpiece, and the supporting portion 300 is capable of bending and stretching.

The welding frock that this embodiment provided, in the use, with fixed part 100 fixed mounting on the frock bench, fix the work piece on clamping part 200, through crooked and flexible regulation supporting part 300, change the position and the orientation of work piece, be convenient for carry out welding operation to the work piece, for the welding of hand work piece among the prior art, have higher stability, can improve welded accuracy, reduce the work load, reduce the cost of labor, and reduce the loss that welding error caused.

In one possible implementation manner of the present embodiment, the supporting portion 300 has a rod-shaped structure and has plasticity.

With the above possible embodiments of the present embodiment, the support portion 300 is made of, for example, a spring structure made of plastic metal, such as wrought iron or aluminum, and can be bent arbitrarily and expanded and contracted, and can maintain the deformed shape after the bending and expansion and contraction deformation, and can stably support the workpiece so that the workpiece can maintain the optimal welding position and the optimal welding angle. The design requirements of the spring structure are as follows: the internal diameter is 1cm, and considering that the height of the pipe fitting during welding generally does not exceed 30cm in the design process, the length of the spring structure is set to be 30-35 cm, and the structural stability of the spring is guaranteed in the length.

In a possible embodiment of the present embodiment, an angle indicating device 400 for indicating the bending angle of the supporting portion 300 is connected to the fixing portion 100.

Through the above possible implementation manner of the present embodiment, in the process of adjusting the bending angle of the support portion 300, the angle indicating device 400 can be used to observe the bending angle of the support portion 300, so as to facilitate intuitive and accurate bending adjustment of the support portion 300. For example, when welding a workpiece a, the angle indicating device 400 records the angle α at which the support 300 is bent, when welding a workpiece B, the angle indicating device 400 records the angle β at which the support 300 is bent, when switching between welding between workpieces a and B, the support 300 can be adjusted to be bent according to the recorded α and β, the support 300 is bent by the angle α when welding a workpiece a, and the support 300 is bent by the angle β when welding a workpiece B, so that the work of adjusting the bending of the support 300 can be performed more quickly and accurately.

In one possible implementation of the present embodiment, as shown in fig. 7, the angle indicating means 400 includes a first dial 410 having first angle graduation marks 411, a starting angle graduation mark of the first angle graduation marks 411 being aligned in parallel with the central axis of the support 300.

With the above possible implementation of the present embodiment, the first angle scale may be configured as a semicircular plate-shaped structure, dots of the first scale mark are located on a straight edge of the first scale 410, a straight edge of the first angle scale is vertically and fixedly connected with the fixing portion 100, an end of the supporting portion 300 away from the clamping portion 200 is vertically and fixedly connected with the fixing portion 100, and the starting angle scale mark may be configured as zero or 90 degrees, such as a vertical angle scale mark in fig. 7 and 8. Parallel means that when the support 300 is not bent, the start angle scale lines are parallel to the central axis of the support 300; by aligned, it is meant that the plane of the central axis of the support 300 and the start angle scale line is perpendicular to the first angle scale. After bending the first support 300 in a direction parallel to the first angle scale, the angle at which the support 300 is bent in a direction parallel to the first angle scale can be read by the first angle scale.

In one possible implementation of this embodiment, in conjunction with fig. 8, the angle indicating means 400 includes a second dial 420 having second angle scale lines 421, the first dial 410 being perpendicular to the second dial 420, a starting angle scale line of the second angle scale lines 421 being aligned in parallel with the central axis of the support 300.

With the above possible implementation manner of the present embodiment, the second angle scale may be configured as a semicircular plate-shaped structure, the first angle scale is perpendicular to the second angle scale, dots of the second scale mark are located on a straight edge of the second scale 420, a straight edge of the second angle scale is perpendicularly and fixedly connected with the fixing portion 100, an end of the supporting portion 300 away from the clamping portion 200 is perpendicularly and fixedly connected with the fixing portion 100, and the starting angle scale mark may be configured as zero degree or 90 degree. Parallel means that when the support 300 is not bent, the start angle scale lines are parallel to the central axis of the support 300; by aligned, it is meant that the plane of the central axis of the support 300 and the start angle scale line is perpendicular to the second angle scale. After bending the second support 300 in a direction parallel to the second angle scale, the angle at which the support 300 is bent in the direction parallel to the second angle scale can be read by the second angle scale.

By reading the angle of bending of the support 300 indicated by the first and second angle dials, the spatial bending angle of the support 300 can be read.

In a possible embodiment of this embodiment, as shown in fig. 6 and 7, a bayonet 110 is provided on the fixing portion 100, a fastening member 120 is connected to the fixing portion 100, and the fastening member 120 can extend into the bayonet 110 in a direction perpendicular to the direction in which the bayonet 110 faces.

With the above possible implementation of the present embodiment, the bayonet 110 may be formed in an Contraband shape, the fastening member 120 may be a fastening bolt or a screw, a threaded hole may be formed in the fixing portion 100, and the fastening member 120 may be screwed to the fixing portion 100. The workstation is steel sheet mesa usually, during the installation, with bayonet socket 110 joint on the workstation edge, then screws fastener 120, makes fastener 120 compress tightly the workstation to fix fixed part 100 on the workstation, it is convenient to install, and stability is high.

In a possible implementation manner of the present embodiment, as shown in fig. 3 and 4, the clamping portion 200 includes a first clamping member 210, a second clamping member 220, and an elastic member 230, the first clamping member 210 is fixedly connected to the supporting portion 300, the first clamping member 210 and the second clamping member 220 are respectively connected to the elastic member 230, the second clamping member 220 can move towards or away from the first clamping member 210, and the elastic potential energy of the elastic member 230 gradually increases when the second clamping member 220 moves towards a direction away from the first clamping member 210.

Through the above possible implementation manner of the embodiment, the first clamping member 210 and the second clamping member 220 are opened by hand, meanwhile, the elastic potential energy of the elastic member 230 is gradually increased, the workpiece is clamped between the first clamping member 210 and the second clamping member 220, and after the hand is released, the elastic potential energy is gradually released by the elastic member 230 to push the first clamping member 210 and the second clamping member 220 to close to each other to clamp the workpiece.

In a possible implementation manner of the present embodiment, as shown in fig. 3, a first groove 241 is provided on a surface of the first clamping member 210 close to the second clamping member 220.

Through the above possible implementation manner of this embodiment, after the first clamping member 210 and the second clamping member 220 are broken, the workpiece is placed in the first groove 241, the bottom surface and the side surface of the first groove 241 can limit the degrees of freedom of the workpiece in three directions, so as to position the workpiece, then the second clamping member 220 is released, and the elastic member 230 pushes the second clamping member 220 to move towards the direction close to the first clamping member 210, so as to press the workpiece in the first groove 241.

In a possible implementation manner of this embodiment, a surface of the second clamping member 220 close to the first clamping member 210 is provided with a second groove 242.

Through the above possible implementation manner of this embodiment, after the first clamping member 210 and the second clamping member 220 are closed together, the first groove 241 and the second groove 242 are spliced together to form an annular groove, so that 360-degree constraint can be performed on a workpiece, and the clamping stability of the workpiece is improved.

In a possible implementation manner of the present embodiment, the first groove 241 and the second groove 242 are arc-shaped grooves, and the radius of the first groove 241 is the same as that of the second groove 242.

Through the above possible embodiment of this embodiment, in pipe fitting welding process, the outer wall of pipe fitting can be centre gripping to the arc wall, improves the centre gripping stability to the pipe fitting, and when the outer wall radius of pipe fitting was the same with the radius of first recess 241 and second recess 242, first recess 241 and second recess 242 can be inseparabler laminating pipe fitting outer wall.

In one possible embodiment of the present embodiment, as shown in fig. 1 and 4, the first clamping member 210 is detachably connected to the supporting portion 300.

Through the above possible embodiments of the present embodiment, the clamping portion 200 can be detached from the supporting portion 300, so as to facilitate replacement of the corresponding clamping portion 200 according to different workpieces, for example, the first groove 241 and the second groove 242 on the clamping portion 200 are combined to form the circular clamping opening 240, the diameters of the clamping openings 240 of different clamping portions 200 are respectively 0.7cm, 1cm, 1.4cm and 1.6cm, and when welding a pipe with a diameter of 1cm, the pipe is replaced with the clamping portion 200 with a diameter of 1cm of the clamping opening 240.

For example, an external thread is disposed at an end of the supporting portion 300 close to the first clamping member 210, a screw hole is correspondingly disposed on the first clamping member 210, and the supporting portion 300 is in threaded connection with the first clamping member 210.

In one possible implementation of the present embodiment, the first clamping member 210 is rotatably connected to the second clamping member 220.

With the above possible implementation manner of this embodiment, as shown in fig. 3, the rotation central axes of the first clamping member 210 and the second clamping member 220 are located at one side of the clamping portion 200, for example, at one side of the first groove 241, and the second clamping member 220 is pulled by hand in a direction away from the first clamping member 210, so that the second clamping member 220 rotates in a direction away from the first clamping member 210, thereby facilitating to place the workpiece between the first clamping member 210 and the second clamping member 220.

As shown in fig. 3 and 5, the elastic member 230 is a torsion spring, one end of the torsion spring is connected to the first clamping member 210, the other end of the torsion spring is connected to the second clamping member 220, the central axis of the torsion spring is parallel to the central axis of the second clamping member 220 rotating relative to the first clamping member 210, when the second clamping member 220 rotates away from the first clamping member 210, the elastic potential energy of the torsion spring gradually increases, the workpiece is placed between the first clamping member 210 and the second clamping member 220, and then the second clamping member 220 is released, the torsion spring releases the elastic potential energy to push the second clamping member 220 towards the first clamping member 210, so that the second clamping member 220 and the first clamping member 210 clamp the workpiece, after the second clamping member 220 and the first clamping member 210 clamp the workpiece, the torsion spring still has a tendency to release the elastic potential energy, and presses the second clamping member 220 against the workpiece in a direction close to the first clamping member 210, thereby pre-tightening the workpiece, the stability of clamping the workpiece is improved.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The utility model provides a welding frock, its characterized in that includes fixed part (100), supporting part (300) and clamping part (200), fixed part (100) with clamping part (200) respectively with the both ends fixed connection of supporting part (300), fixed part (100) be used for with workstation fixed connection, clamping part (200) are used for the centre gripping work piece, supporting part (300) can be crooked and flexible.

2. The welding tool according to claim 1, characterized in that the support part (300) is of a rod-shaped structure and has plasticity.

3. The welding tooling of claim 2, wherein an angle indicating device (400) for indicating the bending angle of the support part (300) is connected to the fixing part (100).

4. The welding fixture of claim 3, wherein the angle indicating device (400) comprises a first dial (410) having first angle graduations (411), a starting one of the first angle graduations (411) being aligned parallel to a central axis of the support portion (300).

5. The welding tool according to claim 4, wherein the angle indicating device (400) comprises a second dial (420) having a second angle scale (421), the first dial (410) being perpendicular to the second dial (420), a starting angle scale of the second angle scale (421) being aligned parallel to a central axis of the support (300).

6. The welding tooling of claim 1, wherein a bayonet (110) is arranged on the fixing portion (100), a fastening member (120) is connected to the fixing portion (100), and the fastening member (120) can extend into the bayonet (110) in a direction perpendicular to the direction in which the bayonet (110) faces.

7. The welding tool according to claim 1, characterized in that the clamping portion (200) comprises a first clamping member (210), a second clamping member (220) and an elastic member (230), the first clamping member (210) is fixedly connected with the supporting portion (300), the first clamping member (210) and the second clamping member (220) are respectively connected with the elastic member (230), the second clamping member (220) can move towards a direction close to or away from the first clamping member (210), and the elastic potential energy of the elastic member (230) is gradually increased when the second clamping member (220) moves towards a direction away from the first clamping member (210).

8. The welding tool according to claim 7, characterized in that a first groove (241) is formed in one surface, close to the second clamping member (220), of the first clamping member (210).

9. The welding tool according to claim 8, characterized in that a second groove (242) is formed in one surface, close to the first clamping member (210), of the second clamping member (220).

10. The welding tool according to claim 9, characterized in that the first groove (241) and the second groove (242) are arc-shaped grooves, and the radius of the first groove (241) is the same as the radius of the second groove (242).

11. The welding tool according to claim 7, characterized in that the first clamping piece (210) is detachably connected with the supporting part (300).

12. The welding tool of claim 7, wherein the first clamping member (210) is rotatably connected to the second clamping member (220).