Swing arm bracket fixture, swing arm bracket clamping tooling, swing arm bracket welding method

Abstract

The present invention provides a swing arm bracket clamp, a swing arm bracket clamping tool, and a welding method for a swing arm bracket. The swing arm bracket includes two bracket seats. The swing arm bracket clamp includes a first clamping part and a second clamping part. The first clamping part and the second clamping part include a first clamping claw and a second clamping claw respectively. The swing arm bracket clamp also includes a driving cylinder, a guiding part, and a positioning part. The driving cylinder simultaneously drives the first clamping part and the second clamping part to move linearly, so that the first clamping claw and the second clamping claw are respectively close to both sides of the positioning part. The two bracket seats can be clamped between one side of the positioning part and the first clamping claw, and between the other side of the positioning part and the second clamping claw respectively. The guiding part guides the first clamping claw and the second clamping claw to move linearly. With the above structure, the clamping claw is guided by the guiding part in the process of clamping the swing arm bracket, and always keeps linear motion, thereby ensuring the positioning effect of the swing arm bracket. Moreover, since the clamping claw moves linearly, it does not need to be opened to both sides, and can adapt to a relatively narrow working space.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a swing arm bracket clamp, a swing arm bracket clamping tool, and a swing arm bracket welding method. Background Art

[0002] In the front subframe products of compact vehicles, the swing arm bracket needs to be fixed by the swing arm bracket clamp before welding. In the conventionally designed clamp, the two jaws are connected by a hinge, and the jaws are prone to offset during the process of clamping each other, resulting in poor positioning of the swing arm bracket. Moreover, due to the structure of the jaws themselves, the two jaws need to be rotated to both sides to open, which cannot adapt to the relatively narrow welding space. At the same time, spatial interference is also prone to occur between the jaws.

[0003] Therefore, how to provide a clamping tool that can ensure the positioning effect of the swing arm bracket and adapt to narrow spaces is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a clamping tool which can ensure the positioning effect of front and rear swing arm brackets and is adaptable to narrow spaces.

[0005] In order to solve the above technical problems, the present invention provides a swing arm bracket clamp, the swing arm bracket includes two bracket seats, the swing arm bracket clamp includes a first clamping part and a second clamping part, the first clamping part and the second clamping part respectively include a first clamping jaw and a second clamping jaw; the swing arm bracket clamp also includes a driving cylinder, a guide part, and a positioning part; the driving cylinder simultaneously drives the first clamping part and the second clamping part to move linearly, so that the first clamping jaw and the second clamping jaw are respectively close to the two sides of the positioning part, and the two bracket seats can be clamped between one side of the positioning part and the first clamping jaw, and between the other side of the positioning part and the second clamping jaw; the guide part guides the first clamping jaw and the second clamping jaw to move linearly.

[0006] With the above structure, the first clamp and the second clamp are guided by the guide part during the process of clamping the swing arm bracket, and can always maintain linear motion, thereby ensuring the positioning effect of the swing arm bracket. In addition, since the clamps move in a linear manner and do not need to be opened to both sides, the requirements for the activity space are relatively small, and they can adapt to relatively narrow working spaces. It is also easier to ensure the space requirements for welding, and there will be no spatial interference between the clamps.

[0007] Optionally, the first clamp and the second clamp are both provided with positioning pins, and the positioning pins can pass through the holes of the bracket seat. The positioning part includes positioning blocks located on both sides, and the positioning blocks are provided with pin holes. The positioning pins move linearly with the corresponding first clamp and the second clamp to penetrate into or leave the pin holes.

[0008] Optionally, the guide portion includes a fixed frame arranged below the driving cylinder, the fixed frame is provided with a first guide unit and a second guide unit, and the first guide unit and the second guide unit respectively guide the first clamping jaw and the second clamping jaw to move linearly.

[0009] Optionally, the first guide unit and the second guide unit are staggered front to back, and each includes two linear bearings distributed upper and lower, the two linear bearings are horizontally arranged and have the same longitudinal position; each linear bearing is provided with a corresponding cylindrical shaft, and the cylindrical shaft can slide axially in the linear bearing, and both ends of the cylindrical shaft extend out of the linear bearing, one end of which is connected to the first clamp or the second clamp, and the other end is provided with a limit block.

[0010] Optionally, it also includes a clamping handle and a handle supporting rod, wherein the handle supporting rod is fixed to the first clamping part, the clamping handle is provided with a long hole, the handle supporting rod is slidably connected to the clamping handle through the long hole, the clamping handle is rotatably connected to the second clamping part, and the clamping handle can pre-clamp the first clamping part and the second clamping part.

[0011] Optionally, it also includes a swing arm support block, which is arranged at the lower end of the positioning portion. When the swing arm bracket is clamped on the positioning portion, the swing arm support block can support the bottom of the swing arm bracket from below.

[0012] Optionally, a contact sensor is further included, wherein the contact sensor is arranged at the lower end of the swing arm support block, and the sensing head of the contact sensor is arranged on the upper surface of the swing arm support block.

[0013] Optionally, it further includes a protective shell arranged on the outside of the guide part, and the protective shell can prevent foreign matter from falling into the guide part.

[0014] The present invention also provides a swing arm bracket clamping tool, which can fix the workpiece that needs to be welded with the swing arm bracket. The swing arm bracket clamping tool includes a base frame, the middle part of the base frame is used to fix the workpiece, and two swing arm bracket clamps are arranged at both ends of the base frame, which are used to clamp the two swing arm brackets before and after welding. The swing arm bracket clamp is the swing arm bracket clamp described above.

[0015] Optionally, a base is provided at each end of the base frame, and the two swing arm support clamps are installed on the base.

[0016] Optionally, the base frame also includes a sliding guide rail and a sliding sleeve arranged on the base. After the swing arm bracket is clamped on the swing arm bracket clamp, the swing arm bracket clamp can slide on the sliding guide rail through the sliding sleeve and move the swing arm bracket to a predetermined welding position.

[0017] Optionally, the sliding guide rail is arranged to be inclined and gradually tilts upward from a low position to a welding position.

[0018] The present invention also provides a welding method for a swing arm bracket, which is based on the swing arm bracket clamping tooling described above and includes the following steps: placing each swing arm bracket on a corresponding swing arm bracket fixture, so that the bracket seats on both sides of the swing arm bracket are respectively located between the corresponding positioning block and the first clamping jaw and the second clamping jaw, and performing a clamping operation; placing the front sub-frame on a base frame of the swing arm bracket clamping tooling to fix the front sub-frame; driving the sliding sleeve of the base to move along a sliding guide rail to drive the swing arm bracket to move to a predetermined welding position to perform a welding operation.

[0019] Optionally, the workpiece is a front subframe, and the sliding sleeve of the base is driven to gradually tilt upward along the sliding guide rail to the predetermined welding position. The swing arm bracket has a swing arm clamp, and the swing arm clamp moves from below the side beam of the front subframe to the inner side of the side beam during the tilting movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a swing arm bracket clamp provided by an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A structural diagram of the middle swing arm bracket fixture from another perspective;

[0022] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle swing arm bracket fixture after the protective shell is installed;

[0023] Figure 4 yes Figure 1 The schematic diagram of the structure of the two sets of swing arm bracket fixtures before and after the swing arm brackets are clamped and ready for welding;

[0024] Figure 5 It is a structural schematic diagram of welding the swing arm bracket on the front sub-frame by the swing arm bracket clamping tool according to an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A partial enlarged schematic diagram of

[0026] Figure 7 It is a structural schematic diagram of the swing arm bracket.

[0027] Figure 1-7The reference numerals in the figures are described as follows:

[0028] 1 first clamping part, 2 second clamping part, 3 first clamping jaw, 4 second clamping jaw, 5 driving cylinder, 6 guiding part, 61 linear bearing, 62 cylindrical shaft, 63 limit block, 64 fixing frame, 7 positioning part, 71 positioning block, 8 positioning pin, 9 clamping handle, 10 handle support rod, 11 swing arm support block, 12 contact sensor, 13 protective shell, 14 swing arm bracket, 141 bracket seat, 142 bottom, 143 swing arm clamping plate, 15 sliding guide rail, 151 sliding sleeve, 16 front subframe, 161 side beam, 17 slide rail driving cylinder. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Please refer to Figure 1-4 , Figure 1 is a structural schematic diagram of a swing arm bracket clamp provided by an embodiment of the present invention; Figure 2 yes Figure 1 A structural diagram of the middle swing arm bracket fixture from another perspective; Figure 3 yes Figure 1 Schematic diagram of the structure of the middle swing arm bracket fixture after the protective shell is installed; Figure 4 yes Figure 1 Schematic diagram of the structure of the two sets of swing arm bracket fixtures before and after clamping the swing arm brackets ready for welding.

[0031] The embodiment of the present invention provides a swing arm bracket fixture, the structure of the swing arm bracket 14 is as follows Figure 7 As shown, Figure 7 : is a schematic diagram of the structure of the swing arm bracket, the swing arm bracket 14 includes a bottom 142 and two bracket seats 141 standing on both sides of the bottom 142, and the swing arm bracket clamp needs to clamp the two bracket seats 141 at the same time and move to a designated position for welding. In this embodiment, the swing arm bracket clamp includes a first clamping portion 1 and a second clamping portion 2, the first clamping portion 1 and the second clamping portion 2 respectively include a first clamping jaw 3 and a second clamping jaw 4, and also includes a driving cylinder 5, a guide portion 6 and a positioning portion 7.

[0032] The driving cylinder 5 can simultaneously drive the first clamping part 1 and the second clamping part 2 to move linearly, so that the first clamping jaw 3 and the second clamping jaw 4 are respectively close to the two sides of the positioning part 7, and the two bracket seats 141 can be clamped between one side of the positioning part 7 and the first clamping jaw 3, and between the other side of the positioning part 7 and the second clamping jaw 4; the guide part 6 guides the first clamping jaw 3 and the second clamping jaw 4 to move linearly.

[0033] With the above structure, the driving cylinder 5 drives the first clamping part 1 and the second clamping part 2 to clamp toward the middle at the same time. Figure 1From the perspective of perspective, the first clamping jaw 3 and the second clamping jaw 4 are respectively arranged at the lower ends of the first clamping part 1 and the second clamping part 2, and the positioning part 7 is also located at the lower end, then the driving cylinder 5 can drive the first clamping jaw 3 and the second clamping jaw 4 to approach the two sides of the positioning part 7 respectively, that is, the first clamping jaw 3 and one side of the positioning part 7 form a clamping position, and the second clamping jaw 4 and the other side of the positioning part 7 form a clamping position, thereby simultaneously clamping the two bracket seats 141 of the swing arm bracket. In addition, the first clamping jaw 3 and the second clamping jaw 4 are guided by the guide part 6 when moving, and can always maintain linear motion, ensuring the positioning effect of the swing arm bracket 14 after clamping and fixing, and because each clamping part and each clamping jaw in this embodiment is generally a vertically extending structure, it moves linearly to both sides to clamp or release without rotating to both sides to open, and the required working space is small, which can adapt to a relatively narrow working space, and it is also easier to ensure the space requirements for welding, and there will be no spatial interference between the clamping jaws.

[0034] Please continue to refer to Figure 1 A positioning pin 8 is provided on the inner side of the first clamping jaw 3 and the second clamping jaw 4, and the inner side is the side facing the positioning portion 7. The positioning pin 8 can pass through the hole of the bracket seat 141. The positioning portion 7 includes positioning blocks 71 located on both sides thereof, and the two positioning blocks 71 are provided with pin holes for the positioning pin 8 to pass through.

[0035] When the bracket seat 141 is clamped between one side of the positioning part 7 and the first clamping jaw 3 or between the other side of the positioning part 7 and the second clamping jaw 4, the positioning pin 8 provided on the inner side of the clamping jaw can pass through the hole of the bracket seat 141 and be inserted into the pin hole of the positioning block 71, so as to further position the swing arm bracket 14 and prevent the bracket seat 141 from being out of the clamping position. Specifically, at the beginning of the clamping, the positioning pin 8 is not inserted into the pin hole, and the bracket seat 141 can be first passed through the positioning pin 8 for pre-positioning, and then the clamping jaw is driven to move, and in the process of the clamping jaw gradually approaching the positioning block 71, the positioning pin 8 is gradually inserted into the pin hole.

[0036] In this embodiment, the guide part 6 includes a fixed frame 64 arranged below the driving cylinder 5. The fixed frame 64 is provided with a first guide unit and a second guide unit (not marked in the figure). The first guide unit and the second guide unit respectively guide the first clamping jaw 3 and the second clamping jaw 4 to move linearly.

[0037] The fixing frame 64 is a supporting structure of the swing arm bracket clamp, and its lower end is fixedly connected to the positioning portion 7. When the first clamping portion 1, the second clamping portion 2, the first clamping jaw 3 and the second clamping jaw 4 are clamped, the first guide unit and the second guide unit provided on the fixing frame 64 respectively guide the first clamping jaw 3 and the second clamping jaw 4 in motion, and the fixing frame 64 can remain stationary to ensure the accuracy of the guidance.

[0038] Furthermore, if Figure 1 and Figure 2As shown, for ease of understanding, for the swing arm bracket fixture, this article defines Figure 1 The direction perpendicular to the paper surface is the front-to-back direction, the outside of the paper surface is the front, and the inside of the paper surface is the back. The first guide unit and the second guide unit are staggered front to back, the first guide unit is arranged at the front end of the fixed frame 64, and the second guide unit is arranged at the rear end of the fixed frame 64, and each guide unit includes two linear bearings 61 distributed up and down, and the two linear bearings 61 are arranged horizontally. In addition, the first guide unit and the second guide unit have a total of four linear bearings 61, which are staggered in sequence in the up and down directions. On the orthographic projection surface from top to bottom, the projection parts of the linear bearings 61 of the first guide unit and the linear bearings 61 of the second guide unit overlap, so as not to interfere with the respective driving of the corresponding jaws, and can save space. It can be seen that each guide unit can also include one linear bearing 61, and two linear bearings 61 further ensure the guiding effect.

[0039] A corresponding cylindrical shaft 62 is arranged in each linear bearing 61. The cylindrical shaft 62 can pass through the inside of the linear bearing 61. A ball is arranged in the linear bearing 61. The cylindrical shaft 62 slides axially along the linear bearing 61 and contacts the ball. Both ends of the cylindrical shaft 62 extend out of the linear bearing 61, one end is connected to the corresponding first clamping jaw 3 or second clamping jaw 4, and the other end is provided with a limit block 63.

[0040] Whether the cylindrical shaft 62 is specifically connected to the first clamping jaw 3 or the second clamping jaw 4 depends on which guide unit the corresponding linear bearing 61 belongs to. If the linear bearing 61 belongs to the first guide unit, the corresponding cylindrical shaft 62 is connected to the first clamping jaw 3. The stopper 63 can prevent the end of the cylindrical shaft 62 that is not connected to the first clamping jaw 3 or the second clamping jaw 4 from escaping from the linear bearing 61.

[0041] Based on the structure of the above-mentioned guide portion 6, the connection between the first clamping jaw 3 and the second clamping jaw 4 and the cylindrical shaft 62 also needs to be staggered front and back. At this time, the bottom clamping jaw head parts of the first clamping jaw 3 and the second clamping jaw 4 are bent in opposite directions, that is, the first clamping jaw 3 is bent backward, and the second clamping jaw 4 is bent forward, so that the positioning pins 8 arranged on the inner sides of the two clamping jaws are still coaxial with respect to the front sub-frame 16 and can be inserted into the pin hole of the positioning block 71.

[0042] In summary, the working process of the guide part 6 is: the driving cylinder 5 drives the first clamping part 1 and the second clamping part 2 to move linearly, and the first clamping part 1 and the second clamping part 2 respectively drive the first clamping jaw 3 and the second clamping jaw 4 to clamp, and the first guide unit fixed to the fixed frame 64 provides guidance for the first clamping jaw 3, and its corresponding cylindrical shaft 62 can only slide in the linear bearing 61 with a fixed direction, which ensures the linear movement of the first clamping jaw 3 in the horizontal direction. The upper and lower linear bearings 61 further ensure that the first clamping jaw 3 will not be offset in the vertical direction during linear movement; the guidance of the second clamping jaw 4 is similar to the guidance process of the first clamping jaw 3, except that the first guide unit that plays a guiding role is changed to the second guide unit, so it will not be repeated.

[0043] The present embodiment also includes a clamping handle 9 and a handle support rod 10. The handle support rod 10 is fixed to the upper end of the first clamping part 1. The clamping handle 9 is provided with a long hole. The handle support rod 10 is provided with a movable rod that can pass through the long hole and a groove space for the clamping handle 9 to move. The clamping handle 9 is slidably connected to the handle support rod 10 through the long hole and the movable rod. The clamping handle 9 is rotatably connected to the upper end of the second clamping part 2. A handle handrail is provided at the upper end of the clamping handle 9. The staff can control the clamping handle 9 by controlling the handle handrail to pre-clamp the first clamping part 1 and the second clamping part 2. Figure 1 From a perspective of perspective, driving the clamping handle 9 to rotate clockwise will push the two clamping parts apart, and driving the clamping handle 9 to rotate counterclockwise will pull the two clamping parts closer.

[0044] In actual operation, the swing arm bracket 14 is placed between the positioning pin 8 and the positioning block 71. After the hole of the bracket seat 141 is aligned with the positioning pin 8, the staff can shake the handle arm at the upper end of the clamping handle 9 to pre-clamp the first clamping part 1 and the second clamping part 2. After pre-clamping, the drive cylinder 5 can be opened to clamp and fix the swing arm bracket 14.

[0045] The pre-clamping can ensure that the locating pin 8 is inserted into the hole of the bracket seat 141 by the staff. If it is not pre-clamped, the drive cylinder 5 may start and clamp when the locating pin 8 is not inserted into the bracket seat 141, and the locating pin 8 cannot be correctly inserted into the hole of the bracket seat 141, which will cause damage to the locating pin 8, the clamping claw and the swing arm bracket 14.

[0046] In this embodiment, the swing arm bracket clamp also includes a swing arm support block 11, which is arranged at the lower end of the positioning part 7. When the swing arm bracket 14 is clamped and fixed to the positioning part 7, the swing arm support block 11 can support the bottom 142 of the swing arm bracket 14 from below to further fix the swing arm bracket 14.

[0047] A contact sensor 12 is also provided at the lower end of the swing arm support block 11, and the sensing head of the contact sensor 12 is arranged on the upper surface of the swing arm support block 11. When the swing arm bracket 14 is clamped in the clamping position, the swing arm support block 11 supports the bottom 142 of the swing arm bracket 14 from below, that is, the upper surface of the swing arm support block 11 contacts the bottom 142 of the swing arm bracket 14. The sensing head of the contact sensor 12 can sense the swing arm bracket 14 and send a signal to the welding system to start welding. If the contact sensor 12 cannot sense the swing arm bracket 14, it will not send a signal to the welding system, welding will not start, and wrong welding can be prevented.

[0048] Please refer to Figure 3 This embodiment also includes a protective shell 13 arranged on the outside of the guide part 6. During the welding process of the swing arm bracket 14, foreign matter may be generated. The protective shell 13 can prevent these foreign matter from falling into the guide part 6, thereby protecting the guide part 6.

[0049] like Figure 5 and Figure 6 As shown, Figure 5 It is a structural schematic diagram of welding the swing arm bracket on the front sub-frame by the swing arm bracket clamping tool according to an embodiment of the present invention; Figure 6 yes Figure 5 A partial enlarged schematic diagram of .

[0050] The present invention also provides a swing arm bracket clamping tool, including a base frame, the middle part of which can fix a workpiece to which a swing arm bracket 14 needs to be welded. In the embodiment, the workpiece is a front sub-frame 16, and a group of the above-mentioned swing arm bracket clamps are arranged at both ends of the base frame, each group includes two swing arm bracket clamps distributed front and back. When the front sub-frame 16 is fixed to the swing arm bracket clamping tool, each side of the front sub-frame 16 corresponds to a group of swing arm bracket clamps for clamping and welding the front and rear two swing arm brackets 14. The front and rear directions here are Figure 4 , 5 From a perspective, the front subframe 16 includes two side beams 161 , the front-to-rear direction is the length direction along the side beams 161 , and the front and rear two swing arm brackets 14 need to be welded to the outer sides of the side beams 161 along the length direction.

[0051] Among them, the swing arm bracket clamp is the swing arm bracket clamp described above. Since the swing arm bracket clamp already has the above technical effects, the swing arm bracket clamping tooling equipped with the swing arm bracket clamp should also have the same technical effects, so it will not be repeated here.

[0052] In addition, in addition to being arranged on the front subframe 16, the swing arm bracket 14 can also be arranged on other workpieces, such as the rear subframe and the front axle. The swing arm bracket fixture and the swing arm bracket clamping tooling provided by the present invention can also be used for welding the swing arm bracket 14 on the rear subframe and the front axle.

[0053] In this embodiment, a base can be set for a group of two swing arm brackets 14, and the fixing frames 64 of the two swing arm brackets 14 are fixed to the base, so as to easily ensure the relative position of the two swing arm brackets 14, thereby ensuring the coaxiality of the welding of the front and rear two swing arm brackets 14.

[0054] The swing arm bracket clamping tooling of this embodiment also includes a sliding guide rail 15 and a sliding drive cylinder 17 arranged on the base frame. The base of the swing arm bracket 14 can be provided with a matching sliding sleeve 151. After the swing arm bracket 14 is clamped in the swing arm bracket fixture, the sliding sleeve 151 can be driven by the sliding drive cylinder 17 to move relative to the sliding guide rail 15, so as to move the two swing arm brackets 14 to the predetermined welding position for welding. Figure 6 In the figure, the base is provided with two sliding sleeves 151 corresponding to the two swing arm bracket clamps, and each end of the base is provided with two corresponding sliding guide rails 15, corresponding to the two swing arm bracket clamps, so as to more stably move the two swing arm bracket clamps at the same end to the predetermined welding position.

[0055] In addition, if Figure 7 As shown, the swing arm bracket 14 also includes a swing arm clamp 143, which extends upward along one end of the bottom 142 of the swing arm bracket 14, and is located between the two bracket seats 141. When the swing arm bracket 14 is located at the welding position, the side of the bracket seat 141 is welded to the outside of the side beam 161, and the swing arm clamp 143 is located on the inside of the side beam 161, and the upper end of the swing arm clamp 143 is higher than the lower end of the side beam 161, so that it is clamped inside and outside the side beam 161 to increase the reliability of the connection with the side beam 161. At this time, the swing arm bracket 14 cannot be moved to the predetermined welding position by horizontal pushing, so, as shown in FIG. Figure 6 As shown, in this embodiment, the sliding guide rail 15 is tilted and gradually tilts upward from a low position to a welding position, so that during the tilting movement, the swing arm clamp 143 can gradually move from the bottom to the inner side of the side beam 161.

[0056] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A swing arm bracket fixture, the swing arm bracket (14) comprising two bracket seats (141), characterized in that: The swing arm bracket clamp comprises a first clamping portion (1) and a second clamping portion (2), wherein the first clamping portion (1) and the second clamping portion (2) respectively comprise a first clamping claw (3) and a second clamping claw (4); the swing arm bracket clamp also comprises a driving cylinder (5), a guide portion (6), and a positioning portion (7); The driving cylinder (5) simultaneously drives the first clamping part (1) and the second clamping part (2) to move linearly, so that the first clamping jaw (3) and the second clamping jaw (4) are respectively close to the two sides of the positioning part (7), and the two bracket seats (141) can be respectively clamped between one side of the positioning part (7) and the first clamping jaw (3), and between the other side of the positioning part (7) and the second clamping jaw (4); the guiding part (6) guides the first clamping jaw (3) and the second clamping jaw (4) to move linearly; The first clamping jaw (3) and the second clamping jaw (4) are both provided with a positioning pin (8), and the positioning pin (8) can pass through the hole of the bracket seat (141); the positioning portion (7) comprises positioning blocks (71) located on both sides, and the positioning blocks (71) are provided with pin holes, and the positioning pin (8) moves linearly with the corresponding first clamping jaw (3) and the second clamping jaw (4) to penetrate into or leave the pin hole; The guide portion (6) comprises a fixing frame (64) disposed below the driving cylinder (5), the fixing frame (64) being provided with a first guiding unit and a second guiding unit, the first guiding unit and the second guiding unit respectively guiding the first clamping jaw (3) and the second clamping jaw (4) to move linearly; The first guide unit and the second guide unit are staggered in front and back, and each comprises two linear bearings (61) distributed upward and downward, and the linear bearings (61) are arranged horizontally; A corresponding cylindrical shaft (62) is disposed in each of the linear bearings (61), and the cylindrical shaft (62) is capable of sliding in the linear bearing (61) along the axial direction. Both ends of the cylindrical shaft (62) extend out of the linear bearing (61), one end of which is connected to the first clamping jaw (3) or the second clamping jaw (4), and the other end of which is provided with a limit block (63); The invention also comprises a clamping handle (9) and a handle support rod (10), wherein the handle support rod (10) is fixed to the first clamping part (1), the clamping handle (9) is provided with a long hole, the handle support rod (10) is slidably connected to the clamping handle (9) through the long hole, the clamping handle (9) is rotatably connected to the second clamping part (2), and the clamping handle (9) can pre-clamp the first clamping part (1) and the second clamping part (2).

2. The swing arm bracket clamp according to claim 1, characterized in that: It also comprises a swing arm support block (11), wherein the swing arm support block (11) is arranged at the lower end of the positioning portion (7), and when the swing arm bracket (14) is clamped on the positioning portion (7), the swing arm support block (11) can support the bottom (142) of the swing arm bracket (14) from below.

3. The swing arm bracket clamp according to claim 2, characterized in that: It also comprises a contact sensor (12), wherein the contact sensor (12) is arranged at the lower end of the swing arm support block (11), and the sensing head of the contact sensor (12) is arranged on the upper surface of the swing arm support block (11).

4. The swing arm bracket clamp according to any one of claims 1 to 3, characterized in that: It also includes a protective shell (13) arranged outside the guide portion (6), wherein the protective shell (13) can prevent foreign matter from falling into the guide portion (6).

5. A swing arm bracket clamping tool, capable of fixing a workpiece to be welded with a swing arm bracket (14), characterized in that: The swing arm bracket clamping tooling comprises a base frame, the middle part of the base frame is used to fix the workpiece, and two swing arm bracket clamps are arranged at both ends of the base frame, which are used to clamp the two swing arm brackets (14) before and after welding. The swing arm bracket clamp is the swing arm bracket clamp according to any one of claims 1 to 4.

6. The swing arm bracket clamping tool according to claim 5, characterized in that: Each end of the base frame is provided with a base, and the two swing arm support clamps are installed on the base.

7. The swing arm bracket clamping tool according to claim 6, characterized in that: The base frame further comprises a sliding guide rail (15) and a sliding sleeve (151) arranged on the base; after the swing arm bracket (14) is clamped on the swing arm bracket clamp, the swing arm bracket clamp can slide on the sliding guide rail (15) via the sliding sleeve (151) and move the swing arm bracket (14) to a predetermined welding position.

8. The swing arm bracket clamping tool according to claim 7, characterized in that: The sliding guide rail (15) is arranged to be inclined, and gradually inclines upward from a low position to a welding position.

9. A welding method for a swing arm bracket, based on the swing arm bracket clamping tooling according to any one of claims 7 to 8, characterized in that: The steps include: Placing each swing arm bracket (14) on a corresponding swing arm bracket fixture so that the bracket seats (141) on both sides of the swing arm bracket (14) are respectively located between the corresponding positioning block (71) and the first clamping jaw (3) and the second clamping jaw (4), and performing a clamping operation; Placing the workpiece on the base frame of the swing arm bracket clamping fixture to fix the workpiece; The sliding sleeve (151) of the base is driven to move along the sliding guide rail (15), thereby driving the swing arm bracket (14) to move to a predetermined welding position to perform a welding operation.

10. The welding method of the swing arm bracket according to claim 9, characterized in that: The workpiece is a front sub-frame (16), and the sliding sleeve (151) of the base is driven to gradually tilt and move upward along the sliding guide rail (15) to the predetermined welding position. The swing arm bracket (14) has a swing arm clamping plate (143), and the swing arm clamping plate (143) moves from below the side beam (161) of the front sub-frame (16) to the inside of the side beam (161) during the tilting movement.

Images