Metal piece welding tool

By designing a combination of multiple adjustment mechanisms, the problem that existing metal parts welding tools cannot adjust the splicing angle is solved, stable positioning and flexible welding of metal parts are achieved, and the applicability of welding is improved.

CN223070773UActive Publication Date: 2025-07-08SUZHOU MINGLI YAZHENG INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202421900136.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-07
Publication Date
2025-07-08
Estimated Expiration
2034-08-07

AI Technical Summary

Technical Problem

The existing metal parts welding tooling is difficult to adjust according to the different splicing angles of the metal parts, and the use flexibility is low and it cannot meet the diverse welding needs.

Method used

A metal piece welding tool including a box base, an L-shaped support plate, an adjustment mechanism, a thread drive mechanism, a universal adjustment mechanism and an adjustable clamping mechanism are designed. Through the combination of these mechanisms, the position of the welding machine, the distance and angle of the metal piece are adjusted to ensure stability and flexibility during the welding process.

Benefits of technology

It realizes flexible adjustment of the positioning height and inclination angle of the metal parts, reduces the up and down shift during the splicing process, and improves the flexibility and scope of welding.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223070773U_ABST
Patent Text Reader

Abstract

The utility model discloses a metal piece welding tool which comprises a box-shaped base with an opening in the top, an L-shaped supporting plate is fixedly connected to the rear side of the top of the box-shaped base, a welding machine is arranged in the L-shaped supporting plate, and an adjusting mechanism fixedly connected with the top of the welding machine is fixedly embedded in the inner wall of the top of the L-shaped supporting plate. The adjusting mechanism is used for adjusting the position of the welding machine, so that the welding machine is convenient to use and operate, a thread driving mechanism is installed between the inner walls of the two sides of the box-shaped base, and spherical sleeves are fixedly connected to the two sides of the top of the thread driving mechanism. Through the arrangement of a series of structures, the positioning height and the inclination angle of the metal piece can be adjusted and fixed before welding, so that the situation of up-down deviation in the splicing process can be effectively reduced, and the welding device can be suitable for different splicing angles, improves the use flexibility and widens the application range.
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Description

Technical Field

[0001] The utility model relates to the technical field of metal part welding tooling, in particular to a metal part welding tooling. Background Art

[0002] For welding in the manufacturing of various vehicle bodies, sheet metal processing, industrial pipelines, etc., when installing and splicing metal pipe fittings, it is usually necessary to use welding tooling for welding and fixing. When positioning the welding of metal parts in the prior art, due to the different splicing angles required, the existing metal part welding tooling can usually only horizontally position the metal parts, and it is difficult to adjust according to the splicing angle of the metal parts, with low flexibility in use and unable to meet the usage requirements. Considering the above situation, we have thus proposed a metal part welding tooling. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the drawbacks existing in the prior art, and to propose a metal part welding tooling.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A metal part welding tooling, including a box-shaped base with an open top. A rear side of the top of the box-shaped base is fixedly connected with an L-shaped support plate. A welding machine is arranged in the L-shaped support plate. An adjusting mechanism fixedly embedded on the inner wall of the top of the L-shaped support plate and fixedly connected with the top of the welding machine is used to adjust the position of the welding machine, thereby facilitating the use and operation of the welding machine. A threaded driving mechanism is installed between the inner walls on both sides of the box-shaped base. Both sides of the top of the threaded driving mechanism are fixedly connected with spherical sleeves. The threaded driving mechanism is used to laterally drive the two spherical sleeves. A universal adjusting mechanism is installed in the spherical sleeves. The top of the universal adjusting mechanism is fixedly connected with a U-shaped mounting seat. The setting of the universal adjusting mechanism can adjust the inclination angle of the U-shaped mounting seat. The two U-shaped mounting seats are symmetrically arranged. An adjustable clamping mechanism is installed in the U-shaped mounting seats and is used to clamp and position the metal parts.

[0006] Preferably, the adjusting mechanism includes a first electric telescopic rod fixedly embedded on the inner wall of the top of the L-shaped support plate. The bottom end of the output shaft of the first electric telescopic rod is fixedly connected with a cross-shaped electric slide rail. The sliding end of the cross-shaped electric slide rail is fixedly connected with the top of the welding machine. The cross-shaped electric slide rail can adjust the front, back, left, and right positions of the welding machine, and its adjustment principle is prior art and will not be specifically described here.

[0007] Preferably, the screw drive mechanism includes two first screws which are respectively rotatably installed on the inner walls of both sides of the box-shaped base. The thread directions of the two first screws are opposite. The ends of the two first screws close to each other are welded together. A rectangular block which is slidably installed on the inner wall of the bottom of the box-shaped base is threadedly sleeved on the first screw. The threaded connection mode between the first screw and the rectangular block can drive the corresponding rectangular block to move horizontally while the first screw rotates. The top of the rectangular block is fixedly connected to the bottom of the corresponding spherical sleeve. The left end of the left first screw extends to the left side of the box-shaped base and is fixedly connected to a knob.

[0008] Preferably, the universal adjustment mechanism includes a universal ball movably sleeved in the spherical sleeve. The universal ball and the spherical sleeve cooperate with each other to perform angle adjustment operations. The outer side of the universal ball is adhesively coated with a hard rubber sheet. The outer side of the hard rubber sheet is in movable contact with the inner wall of the corresponding spherical sleeve. The top of the universal ball is fixedly connected to a connecting block. The top of the connecting block is fixedly connected to the bottom of the corresponding U-shaped mounting seat. Rectangular grooves are formed on the inner walls of the two spherical sleeves away from each other. A rectangular pressing block is slidably sleeved in the rectangular groove. The sides of the two rectangular pressing blocks close to each other are both arc-shaped structures and are fixedly connected with a plurality of pointed blocks. The tips of the pointed blocks are in close contact with the outer side of the corresponding hard rubber sheet. The universal ball can be fixed under the friction force between the pointed blocks and the corresponding hard rubber sheet. A first T-shaped screw is rotatably installed on the sides of the two rectangular pressing blocks away from each other. The two first T-shaped screws extend to the outside of the corresponding spherical sleeves away from each other. The spherical sleeve is threadedly sleeved on the corresponding first T-shaped screw. The threaded connection mode between the spherical sleeve and the corresponding first T-shaped screw can move in position while the first T-shaped screw rotates.

[0009] Preferably, the adjustable clamping mechanism includes a first clamping plate and a second clamping plate arranged in the U-shaped mounting seat. The metal part can be clamped and fixed by the first clamping plate and the second clamping plate. The first clamping plate is slidably installed with the corresponding U-shaped mounting seat. A second T-shaped screw is rotatably installed on the top of the first clamping plate. The U-shaped mounting seat is threadedly sleeved on the corresponding second T-shaped screw. A multi-stage electric telescopic rod is embedded and fixed on the inner wall of the bottom of the U-shaped mounting seat. The top of the output shaft of the multi-stage electric telescopic rod is fixedly connected to the bottom of the corresponding second clamping plate. The multi-stage electric telescopic rod is used to drive the corresponding second clamping plate to move vertically. Anti-slip rubber sheets are adhesively fixed on the sides of the first clamping plate and the second clamping plate close to each other. The setting of the anti-slip rubber sheets can effectively reduce the slipping situation during the clamping and fixing process. The connecting block is movably sleeved on the corresponding multi-stage electric telescopic rod.

[0010] Preferably, a first through hole is formed in the inner wall of the bottom of the U-shaped mounting seat. One side of each of the two first through holes close to each other is an opening, and two multi-stage electric telescopic rods are respectively fixedly connected to the inner walls of the sides of the two first through holes far from each other. An avoidance groove is formed in the top of the connecting block. One side of each of the two avoidance grooves close to each other is an outlet, and the multi-stage electric telescopic rod is located in the corresponding avoidance groove.

[0011] Preferably, a movable through hole is formed in the inner wall of the top of the spherical sleeve. The connecting block is located in the corresponding movable through hole and does not contact the inner wall of the movable through hole. The arrangement of the movable through hole provides a space distance for the connecting block to rotate, and the inner diameter of the movable through hole is smaller than the outer diameter of the universal ball.

[0012] Compared with the existing technology, the beneficial effects of the utility model are as follows:

[0013] 1. By the cooperation of the U-shaped mounting seat and the adjustable reinforcement mechanism, the metal parts can be clamped and fixed, and the positioning height of the metal parts can be adjusted according to the welding requirements, effectively reducing the situation of up and down deviation during the splicing process;

[0014] 2. By the setting of the threaded drive mechanism, the distance between the two fixed metal parts can be adjusted according to the welding requirements, so that the splicing surfaces of the two metal parts are in movable contact, and by the setting of the adjustment mechanism, the position of the welding machine can be adjusted, thus facilitating the welding operation of the personnel;

[0015] 3. By the cooperation of the spherical sleeve and the universal adjustment mechanism, the inclination angles of the two metal parts can be adjusted according to the splicing angle requirements, so that it can be applicable to different splicing angles, improving the use flexibility and application range;

[0016] Through the setting of a series of structures of the utility model, the positioning height and inclination angle of the metal parts can be adjusted and fixed before welding, thus effectively reducing the situation of up and down deviation during the splicing process, and being applicable to different splicing angles, improving the use flexibility and application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a metal part welding tooling proposed by the utility model;

[0018] Figure 2 is Figure 1 the cross-sectional structural diagram of

[0019] Figure 3 is Figure 2 the enlarged structural diagram of part A in

[0020] Figure 4Schematic cross-sectional structure diagram of the inclined adjustment state after clamping a metal component by a clamping and fixing metal component welding tool proposed by the present utility model.

[0021] In the figure: 100, box-shaped base; 101, L-shaped support plate; 102, cross-shaped electric slide rail; 103, first electric telescopic rod; 104, welding machine; 1, first screw rod; 2, rectangular block; 3, U-shaped mounting seat; 4, first clamping plate; 5, second T-shaped screw rod; 6, second clamping plate; 7, multi-stage electric telescopic rod; 8, connecting block; 9, spherical sleeve; 10, universal ball; 11, hard rubber sheet; 12, rectangular groove; 13, rectangular pressing block; 14, first T-shaped screw rod; 15, pointed block; 16, movable perforation. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Refer to Figures 1-4 , a metal component welding tool, including a box-shaped base 100 with an open top. The rear side of the top of the box-shaped base 100 is fixedly connected with an L-shaped support plate 101. A welding machine 104 is arranged in the L-shaped support plate 101. An adjusting mechanism fixedly connected with the top of the welding machine 104 is embedded and fixed on the inner wall of the top of the L-shaped support plate 101. The adjusting mechanism includes a first electric telescopic rod 103 embedded and fixed on the inner wall of the top of the L-shaped support plate 101. Among them, an embedding hole for fixedly installing the first electric telescopic rod 103 is opened on the inner wall of the top of the L-shaped support plate 101. The bottom end of the output shaft of the first electric telescopic rod 103 is fixedly connected with a cross-shaped electric slide rail 102. The sliding end of the cross-shaped electric slide rail 102 is fixedly connected with the top of the welding machine 104. The cross-shaped electric slide rail 102 can adjust the front, back, left, and right positions of the welding machine 104. Its adjustment principle is prior art and will not be specifically described here;

[0024] A threaded drive mechanism is installed between the inner walls on both sides of the box-shaped base 100. The threaded drive mechanism includes two first screw rods 1, and the two first screw rods 1 are respectively rotatably installed on the inner walls on both sides of the box-shaped base 100. Circular holes are opened on the inner walls on both sides of the box-shaped base 100, and first bearings are fixedly sleeved in the circular holes. The inner side of the inner ring of the first bearing is fixedly connected to the outer side of the corresponding first screw rod 1. The first bearing serves to rotatably install the corresponding first screw rod 1. The thread directions of the two first screw rods 1 are opposite, and the ends of the two first screw rods 1 close to each other are welded. A rectangular block 2 that is slidably installed on the bottom inner wall of the box-shaped base 100 is threadedly sleeved on the first screw rod 1. A T-shaped slide rail is fixedly connected to the bottom inner wall of the box-shaped base 100. A T-shaped chute with openings on both sides is opened at the bottom of the rectangular block 2, and the T-shaped chute is slidably connected to the T-shaped slide rail. The T-shaped slide rail positions the rectangular block 2. A first threaded hole that is threadedly connected to the corresponding first screw rod 1 is opened on the right side of the rectangular block 2. The first screw rod 1 and the rectangular block 2 are threadedly connected through the corresponding first threaded hole, and the rectangular block 2 can be driven to move horizontally while the first screw rod 1 rotates. The left end of the first screw rod 1 on the left extends to the left side of the box-shaped base 100 and is fixedly connected to a knob;

[0025] A spherical sleeve 9 is fixedly connected to the top of the rectangular block 2. A universal adjustment mechanism is installed in the spherical sleeve 9. The universal adjustment mechanism includes a universal ball 10 that is movably sleeved in the spherical sleeve 9. The universal ball 10 and the spherical sleeve 9 cooperate to perform angle adjustment operations. A hard rubber sheet 11 is adhesively coated on the outer side of the universal ball 10, and the outer side of the hard rubber sheet 11 is in movable contact with the inner wall of the corresponding spherical sleeve 9. A connecting block 8 is fixedly connected to the top of the universal ball 10. Rectangular grooves 12 are opened on the inner walls on both sides of the two spherical sleeves 9 away from each other. A rectangular pressing block 13 is slidably sleeved in the rectangular groove 12. The sides of the two rectangular pressing blocks 13 close to each other are both arc-shaped structures and are fixedly connected with a plurality of pointed blocks 15. The tips of the pointed blocks 15 are in close contact with the outer side of the corresponding hard rubber sheet 11. The universal ball 10 can be fixed under the frictional force between the pointed blocks 15 and the corresponding hard rubber sheet 11. First T-shaped screw rods 14 are rotatably installed on the sides of the two rectangular pressing blocks 13 away from each other. Second bearings are fixedly connected to the sides of the two rectangular pressing blocks 13 away from each other. The inner side of the inner ring of the second bearing is fixedly connected to the outer side of the corresponding first T-shaped screw rod 14. The second bearing serves to rotatably install the corresponding first T-shaped screw rod 14. The sides of the two first T-shaped screw rods 14 away from each other respectively extend outside the corresponding spherical sleeve 9, and the spherical sleeve 9 is threadedly sleeved on the corresponding first T-shaped screw rod 14. A second threaded hole is opened on the inner wall of the rectangular groove 12 away from its opening, and the second threaded hole is threadedly connected to the corresponding first T-shaped screw rod 14. The spherical sleeve 9 and the corresponding first T-shaped screw rod 14 can move in position while the first T-shaped screw rod 14 rotates through the threaded connection of the second threaded hole;

[0026] A U-shaped mounting seat 3 is fixedly connected to the top of the connecting block 8. An activity perforation 16 is provided on the inner wall of the top of the spherical sleeve 9. The connecting block 8 is located in the corresponding activity perforation 16 and does not contact the inner wall of the activity perforation 16. The setting of the activity perforation 16 provides a rotatable space distance for the connecting block 8, and the inner diameter of the activity perforation 16 is smaller than the outer diameter of the universal ball 10. The two U-shaped mounting seats 3 are symmetrically arranged. An adjustable clamping mechanism is installed in the U-shaped mounting seat 3. The adjustable clamping mechanism includes a first clamping plate 4 and a second clamping plate 6 arranged in the U-shaped mounting seat 3. The metal part can be clamped and fixed by the first clamping plate 4 and the second clamping plate 6. The first clamping plate 4 is slidably installed with the corresponding U-shaped mounting seat 3. Sliding grooves are provided on the inner walls of the mutually remote sides of the two U-shaped mounting seats 3. Sliders are fixedly connected to the mutually remote sides of the two first clamping plates 4. The sliders are slidably connected to the corresponding sliding grooves. The sliders cooperate with the corresponding sliding grooves to guide the first clamping plate 4 vertically. A second T-shaped screw 5 is rotatably installed on the top of the first clamping plate 4. A third bearing is fixedly connected to the top of the first clamping plate 4. The inner ring of the third bearing is threadedly connected to the corresponding second T-shaped screw 5. The third bearing serves to rotatably install the corresponding second T-shaped screw 5. The U-shaped mounting seat 3 is threadedly sleeved on the corresponding second T-shaped screw 5. A third threaded hole is provided on the inner wall of the top of the U-shaped mounting seat 3. The third threaded hole is threadedly connected to the corresponding second T-shaped screw 5. The second T-shaped screw 5 rotates and vertically moves in the corresponding third threaded hole. A multi-stage electric telescopic rod 7 is embedded and fixed on the inner wall of the bottom of the U-shaped mounting seat 3. The top end of the output shaft of the multi-stage electric telescopic rod 7 is fixedly connected to the bottom of the corresponding second clamping plate 6. The multi-stage electric telescopic rod 7 is used to drive the corresponding second clamping plate 6 to move vertically. Anti-slip rubber sheets are adhesively fixed to the mutually close sides of the first clamping plate 4 and the second clamping plate 6. The setting of the anti-slip rubber sheets can effectively reduce the slipping during the clamping and fixing process. The connecting block 8 is movably sleeved on the corresponding multi-stage electric telescopic rod 7. A first through hole is provided on the inner wall of the bottom of the U-shaped mounting seat 3. The mutually close sides of the two first through holes are both provided as openings. The two multi-stage electric telescopic rods 7 are respectively fixedly connected to the inner walls of the mutually remote sides of the two first through holes. Avoidance grooves are provided on the top of the connecting block 8. The mutually close sides of the two avoidance grooves are both provided as outlets. The multi-stage electric telescopic rod 7 is located in the corresponding avoidance groove; through the setting of a series of structures of the present utility model, the positioning height and inclination angle of the metal part can be adjusted and fixed before welding, thereby effectively reducing the situation of vertical offset during the splicing process, and being applicable to different splicing angles, improving the use flexibility and application range.

[0027] Working principle: When in use, place the two metal parts to be spliced on the top of the corresponding second clamping plate 6 respectively. If the diameters of the two metal parts are different, the positioning height of the metal part with a smaller diameter can be adjusted. When adjusting, the corresponding multi-stage electric telescopic rod 7 can be started forward. The output shaft of the multi-stage electric telescopic rod 7 drives the corresponding second clamping plate 6 to move upward. When the second clamping plate 6 drives the corresponding metal part to move to the required height position, the multi-stage electric telescopic rod 7 can be stopped. Then, the second T-shaped screw rod 5 can be rotated forward. While the second T-shaped screw rod 5 rotates, it moves downward. The second T-shaped screw rod 5 drives the corresponding first clamping plate 4 to move downward. The first clamping plate 4 drives the corresponding anti-slip rubber sheet to move downward until it is in close contact with the top of the metal part. At this time, under the clamping force of the cooperation between the first clamping plate 4 and the second clamping plate 6, the fixation of the metal part is realized, and the positioning height position of the metal part can be adjusted, improving the positioning accuracy and effectively reducing the situation of up and down deviation during the splicing process;

[0028] After fixation, if direct horizontal welding is required, the knob can be rotated forward directly. The knob drives the two first screw rods 1 to rotate. Since the thread directions of the two first screw rods 1 are opposite, while the two first screw rods 1 rotate, they drive the two rectangular blocks 2 to move towards each other. The rectangular blocks 2 drive the position of the U-shaped mounting seat 3 to move through the corresponding spherical sleeves 9 and universal adjustment mechanisms in sequence. The U-shaped mounting seat 3 drives the corresponding metal part to move horizontally. When the surfaces of the two metal parts in contact with each other are spliced, the rotation of the knob can be stopped. At this time, the position of the welding machine 104 can be adjusted through the cooperation of the first electric telescopic rod 103 and the cross-shaped electric slide rail 102 for welding operations. After one side is welded, the other side of the metal part can be adjusted for welding;

[0029] When a certain angle is required between two metal parts to be welded, before turning the knob, the inclination angle of the corresponding metal part needs to be adjusted. During the adjustment, the first T-shaped screw 14 can be rotated in the reverse direction. While the first T-shaped screw 14 rotates, it moves away from the universal ball 10. The first T-shaped screw 14 drives the corresponding rectangular pressing block 13 to move away from the universal ball 10. The rectangular pressing block 13 drives the corresponding multiple pointed blocks 15 to separate from the hard rubber sheet 11, releasing the fixation of the universal ball 10. At this time, the U-shaped mounting seat 3 can be rotated. The U-shaped mounting seat 3 drives the corresponding connecting block 8 to rotate. The connecting block 8 drives the corresponding universal ball 10 and hard rubber sheet 11 to rotate. The U-shaped mounting seat 3 drives the corresponding metal part to rotate, causing its inclination angle to change. When the required inclination angle is adjusted according to the usage needs, stop rotating the universal ball 10 and rotate the first T-shaped screw 14 in the forward direction, so that the rectangular pressing block 13 drives the corresponding multiple pointed blocks 15 to move to closely contact the outer side of the hard rubber sheet 11. Under the frictional force between the pointed block 15 and the corresponding hard rubber sheet 11, the universal ball 10 is fixed, thereby fixing the metal part. After the adjustment, the knob can be rotated to adjust the distance between the two metal parts. When the splicing surfaces of the two metal parts are in contact, the welding operation can be carried out in the same manner as above. The adjustable inclination angle of the fixed metal part can be applied to different splicing angles, improving the usage flexibility and application range.

[0030] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A welding tool for metal parts, comprising a box-shaped base (100) with an open top. A rear side of the top of the box-shaped base (100) is fixedly connected to an L-shaped support plate (101). A welding machine (104) is provided inside the L-shaped support plate (101), and it is characterized in that, An adjustment mechanism fixedly embedded on the top inner wall of the L-shaped support plate (101) is fixedly connected to the top of the welding machine (104). A threaded driving mechanism is installed between the two inner walls of the box-shaped base (100). Both sides of the top of the threaded driving mechanism are fixedly connected with spherical sleeves (9). A universal adjustment mechanism is installed in the spherical sleeves (9). The top of the universal adjustment mechanism is fixedly connected with a U-shaped mounting seat (3). The two U-shaped mounting seats (3) are symmetrically arranged. An adjustable clamping mechanism is installed in the U-shaped mounting seat (3).

2. The metal part welding tooling according to claim 1, characterized in that, The adjustment mechanism includes a first electric telescopic rod (103) fixedly embedded on the top inner wall of the L-shaped support plate (101). The bottom end of the output shaft of the first electric telescopic rod (103) is fixedly connected with a cross-shaped electric slide rail (102). The sliding end of the cross-shaped electric slide rail (102) is fixedly connected to the top of the welding machine (104).

3. The metal part welding tooling according to claim 2, characterized in that, The threaded driving mechanism includes two first screw rods (1). The two first screw rods (1) are respectively rotatably installed on the two inner walls of the box-shaped base (100). The thread directions of the two first screw rods (1) are opposite. The mutually approaching ends of the two first screw rods (1) are welded together. A rectangular block (2) slidably installed on the bottom inner wall of the box-shaped base (100) is sleeved on the first screw rod (1) in a threaded manner. The top of the rectangular block (2) is fixedly connected to the bottom of the corresponding spherical sleeve (9). The left end of the left first screw rod (1) extends to the left side of the box-shaped base (100) and is fixedly connected with a knob.

4. A metal part welding tooling according to claim 3, characterized in that, The universal adjustment mechanism includes a universal ball (10) movably sleeved in the spherical sleeve (9). The outer side of the universal ball (10) is adhesively coated with a hard rubber sheet (11). The outer side of the hard rubber sheet (11) is in movable contact with the inner wall of the corresponding spherical sleeve (9). The top of the universal ball (10) is fixedly connected with a connecting block (8). The top of the connecting block (8) is fixedly connected to the bottom of the corresponding U-shaped mounting seat (3). Rectangular grooves (12) are respectively formed on the inner walls of the two mutually remote sides of the two spherical sleeves (9). A rectangular pressing block (13) is slidably sleeved in the rectangular groove (12). The mutually approaching sides of the two rectangular pressing blocks (13) are both arc-shaped structures and are fixedly connected with a plurality of pointed blocks (15). The tips of the pointed blocks (15) are in close contact with the outer side of the corresponding hard rubber sheet (11). A first T-shaped screw rod (14) is rotatably installed on the mutually remote side of each of the two rectangular pressing blocks (13). The mutually remote sides of the two first T-shaped screw rods (14) respectively extend outside the corresponding spherical sleeve (9). The spherical sleeve (9) is sleeved on the corresponding first T-shaped screw rod (14) in a threaded manner.

5. The welding tooling for metal parts according to claim 4, characterized in that The adjustable clamping mechanism includes a first clamping plate (4) and a second clamping plate (6) arranged in a U-shaped mounting seat (3). The first clamping plate (4) is slidably mounted with the corresponding U-shaped mounting seat (3). A second T-shaped screw rod (5) is rotatably mounted on the top of the first clamping plate (4). The U-shaped mounting seat (3) is threadedly sleeved on the corresponding second T-shaped screw rod (5). A multi-stage electric telescopic rod (7) is fixedly embedded on the bottom inner wall of the U-shaped mounting seat (3). The top end of the output shaft of the multi-stage electric telescopic rod (7) is fixedly connected to the bottom of the corresponding second clamping plate (6). Anti-slip rubber sheets are adhesively fixed on one side of the first clamping plate (4) and the second clamping plate (6) that are close to each other. The connecting block (8) is movably sleeved on the corresponding multi-stage electric telescopic rod (7).

6. The welding tooling for metal parts according to claim 5, characterized in that First through holes are formed in the bottom inner wall of the U-shaped mounting seat (3). One side of the two first through holes close to each other is provided as an opening. The two multi-stage electric telescopic rods (7) are respectively fixedly connected to the inner walls of the two first through holes on the sides far from each other. Avoidance grooves are formed in the top of the connecting block (8). One side of the two avoidance grooves close to each other is provided as an outlet. The multi-stage electric telescopic rod (7) is located in the corresponding avoidance groove.

7. A metal part welding tooling according to claim 4, characterized in that, An activity through hole (16) is formed in the top inner wall of the spherical sleeve (9). The connecting block (8) is located in the corresponding activity through hole (16) and does not contact the inner wall of the activity through hole (16).