Welding fixture and welding equipment

Abstract

The utility model discloses a welding fixture and welding equipment, the welding fixture comprises a clamping assembly, a rotating platform and an overturning platform, the clamping assembly comprises a mounting seat for placing a workpiece, a clamping piece and a first driving piece, and the first driving piece is used for driving the clamping piece to move so as to clamp the workpiece; the rotating platform is in driving connection with the mounting base and used for driving the workpiece to rotate with the axis of the workpiece as the center. The overturning platform is used for driving the rotating platform to rotate by a set angle, and the rotating center of the overturning platform is perpendicular to the rotating center of the rotating platform. After the workpiece is clamped on the clamping assembly, the turnover platform can drive the clamping assembly and the workpiece to turn over by a certain angle, so that the workpiece is deflected to one side from a vertically placed state, and an area to be welded is exposed. The welding nozzle can directly move downwards to one side of the workpiece so as to be close to a to-be-welded area. Meanwhile, the welding nozzle can be kept still in the welding process, the rotating platform drives the workpiece to rotate so that a circle can be welded to the periphery of the workpiece, and the requirement for the freedom degree of the welding nozzle is low.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing, and in particular to a welding fixture and welding equipment. Background Art

[0002] The driven composite gear is a key part of automobile transmission. It is composed of a driven gear and a clutch gear by laser welding. The welding of this workpiece is mostly electron beam welding. The disadvantage is that the welding area needs to be vacuumed during welding, and the welding efficiency is too low. The use of laser welding machines does not require a vacuum environment for welding. At the same time, due to the excellent beam performance of the laser, the welding effect is equivalent to that of electron beam welding, and the laser welding efficiency is significantly higher than that of electron beam welding. Therefore, it is an inevitable trend to use laser welding instead of electron beam welding for driven composite gear welding. Due to the external structure of the driven gear and the clutch gear, the welding nozzle needs to have a high degree of freedom when welding them, so as to approach the welding area at a specific angle to avoid interference with the workpiece. Correspondingly, the manufacturing cost of the welding equipment will be higher.

[0003] Application Contents

[0004] The present application proposes a welding fixture and a welding device, aiming to solve the problem that the current welding equipment has a high requirement on the degree of freedom of the welding nozzle when welding workpieces.

[0005] The present application proposes a welding fixture, comprising:

[0006] A fixture assembly, comprising a mounting seat for placing a workpiece, a clamping member disposed on the mounting seat, and a first driving member drivingly connected to the clamping member, wherein the first driving member is used to drive the clamping member to move so as to clamp the workpiece;

[0007] A rotating platform is drivingly connected to the mounting seat and is used to drive the workpiece to rotate around its own axis;

[0008] The flipping platform is drivingly connected to the rotating platform and is used to drive the rotating platform to rotate a set angle. The rotation center of the flipping platform is perpendicular to the rotation center of the rotating platform.

[0009] In some embodiments, the clamp assembly also includes a connecting rod that passes through the mounting seat, one end of the connecting rod is drivingly connected to the first driving member, and the other end is provided with a protrusion, and the clamping member is clamped on the end of the connecting rod provided with the protrusion.

[0010] In some embodiments, a side wall of the clamping member is provided with a slot for clamping with the connecting rod, one end of the clamping member is used to abut against the protrusion, and the other end is used to abut against the workpiece.

[0011] In some embodiments, the flip platform comprises:

[0012] Mounting frame;

[0013] A receiving seat, rotatably connected to the mounting frame, and used for mounting the rotating platform;

[0014] The first motor is arranged on the mounting frame and is drivingly connected to the receiving seat.

[0015] In some embodiments, the rotating platform comprises:

[0016] Base;

[0017] A rotating seat, rotatably connected to the base;

[0018] The second motor is arranged on the base and is drivingly connected to the rotating seat, and is used for driving the rotating seat to rotate relative to the base.

[0019] The present application also proposes a welding device, comprising the above-mentioned welding fixture, and the welding device also comprises a manipulator disposed above the welding fixture and a welding head drivingly connected to the manipulator.

[0020] In some embodiments, the welding equipment further includes a translation assembly, which is used to drive the welding fixture to translate so as to enter and exit the working area of ​​the welding head.

[0021] In some embodiments, the welding equipment further includes an outer cover for accommodating the manipulator and the welding fixture, and a fume purifier disposed on one side of the outer cover, wherein the fume purifier is connected to the outer cover.

[0022] In some embodiments, the welding equipment includes two groups of the welding fixtures, and two groups of translation components that are drive-connected to the two groups of the welding fixtures in a one-to-one correspondence.

[0023] The welding fixture in the present application includes a clamping assembly, a rotating platform and a flipping platform. The clamping assembly includes a mounting seat for placing a workpiece, a clamping member arranged on the mounting seat, and a first driving member drivingly connected to the clamping member, wherein the first driving member is used to drive the clamping member to move to clamp the workpiece; the rotating platform is drivingly connected to the mounting seat, and is used to drive the workpiece to rotate around its own axis; the flipping platform is drivingly connected to the rotating platform, and is used to drive the rotating platform to rotate a set angle, and the rotation center of the flipping platform is perpendicular to the rotation center of the rotating platform. After the workpiece is clamped on the clamping assembly, the flipping platform can drive the holding assembly and the workpiece to flip a certain angle, so that the workpiece is deflected to one side from a vertically placed state to expose the area to be welded. The welding nozzle can directly descend to one side of the workpiece to approach the area to be welded. At the same time, the welding nozzle can remain stationary during the welding process, and the rotating platform drives the workpiece to rotate to weld a circle around the periphery of the workpiece, and the degree of freedom of the welding nozzle is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a welding device in one embodiment of the present application;

[0025] Figure 2 for Figure 1 A schematic structural diagram of a welding fixture in an embodiment;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the rotating platform and the flipping platform in the embodiment;

[0027] Figure 4 for Figure 1 A cross-sectional view of a clamp assembly according to an embodiment.

[0028] Description of labels:

[0029] 10. Workpiece; 11. Gear; 12. Ring gear; 20. Fixture assembly; 21. Mounting seat; 22. First driving member; 23. Connecting rod; 24. Clamping member; 25. Pad; 30. Rotating platform; 31. Rotating seat; 32. First motor; 33. Base; 34. Slip ring; 35. Connecting seat; 40. Flipping platform; 41. Mounting frame; 42. Receiver seat; 43. Second motor; 51. Machine platform; 52. Frame; 60. Translation assembly; 70. Manipulator.

[0030] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the scheme in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0033] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0034] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] In one embodiment of the present application, refer to Figure 1 and Figure 4 The welding fixture includes: a fixture assembly 20, including a mounting seat 21 for placing a workpiece 10, a clamping member 24 arranged on the mounting seat 21, and a first driving member 22 drivingly connected to the clamping member 24, the first driving member 22 is used to drive the clamping member 24 to move to clamp the workpiece 10; a rotating platform 30, drivingly connected to the mounting seat 21, used to drive the workpiece 10 to rotate around its own axis; a flipping platform 40, drivingly connected to the rotating platform 30, used to drive the rotating platform 30 to rotate a set angle, and the rotation center of the flipping platform 40 is perpendicular to the rotation center of the rotating platform 30.

[0036] In the present application, the workpiece 10 includes two parts, a gear 11 and a ring gear 12. The gear 11 and the ring gear 12 are plugged in and remain coaxial after being plugged in. At the same time, laser welding is performed at the joint between the two to fix the ring gear 12 and the gear 11 together. During welding, the workpiece 10 is placed vertically with its axis vertical. At this time, the weld is on the circumference of the workpiece 10, so the welding nozzle needs to be kept horizontal to approach the joint. Normally, the welding nozzle is kept vertically downward. In order to weld this workpiece 10, the welding nozzle is required to have a degree of freedom of rotation to adjust its posture, so that it is easy to approach and unseal without interfering with the side of the gear 11.

[0037] In the embodiment of the present application, after the workpiece 10 is clamped on the clamping assembly, the flipping platform 40 can drive the holding assembly and the workpiece 10 to flip a certain angle, so that the workpiece 10 is deflected to one side from the vertically placed state to expose the area to be welded. The welding nozzle can directly descend to one side of the workpiece 10 to approach the area to be welded. At the same time, the welding nozzle can remain stationary during the welding process, and the rotating platform 30 drives the workpiece 10 to rotate to weld a circle around the periphery of the workpiece 10. The degree of freedom of the welding nozzle is relatively low. There is no need to use an articulated manipulator 70 with a high degree of freedom to drive the movement of the welding head and the welding nozzle. An ordinary three-axis drive module can be used, and the manufacturing cost is also lower.

[0038] In some embodiments, further reference is made to Figure 4 The clamp assembly 20 further includes a connecting rod 23 that passes through the mounting seat 21. One end of the connecting rod 23 is drivingly connected to the first driving member 22, and the other end is provided with a protrusion. The clamping member 24 is clamped on the end of the connecting rod 23 provided with the protrusion. The mounting seat 21 is provided with a central hole, and a plug hole for docking with the gear 11 is provided at its upper end. The connecting rod 23 passes through the plug interface and extends from the top of the mounting seat 21. The first driving member 22 inside the mounting seat 21 can be a cylinder, and the push rod of the cylinder is coaxial with the plug interface. One end of the connecting rod 23 is fixedly connected to the push rod.

[0039] In addition, the clamping member 24 may be a round block with an outer diameter slightly larger than the inner diameter of the gear ring 12, so that the mounting seat 21 can clamp the workpiece 10. The side wall of the clamping member 24 is provided with a slot for clamping with the connecting rod 23. One end of the clamping member 24 is used to abut against the protrusion to prevent the clamping member 24 from being separated from the connecting rod 23, and the other end is used to abut against the workpiece 10. When the workpiece 10 is placed on the mounting seat 21, the upper end of the connecting rod 23 is higher than the gear ring 12. At this time, the clamping member 24 can be clamped on the connecting rod 23, and the cylinder drives the connecting rod 23 to pull back, so that the workpiece 10 can be fixed on the mounting seat 21, and the gear 11 and the gear ring 12 are kept pressed. After welding is completed, the connecting rod 23 is extended to remove the clamping member 24, and the workpiece 10 can be removed from the mounting seat 21.

[0040] In some embodiments, further reference is made to Figure 2 and Figure 3 The flip platform 40 includes: a mounting frame 41; a receiving seat 42, which is rotatably connected to the mounting frame 41 and used to mount the rotating platform 30; and a first motor 32, which is arranged on the mounting frame 41 and is drivingly connected to the receiving seat 42. In this embodiment, the first motor 32 and the receiving frame are driven by a speed reduction mechanism, and the receiving seat 42 can be rotated to a certain angle and maintained at the set angle. The mounting frame 41 is recessed in the middle, and the receiving seat 42 is arranged in the recess, and the two sides are rotatably connected to the inner side wall of the mounting frame 41. The receiving seat 42 is box-shaped and has an opening at the top. The rotating platform 30 is arranged in the receiving seat 42, and the clamp assembly 20 is arranged on the rotating platform 30 and located above the receiving seat 42. In order to make the clamp assembly 20 higher than the receiving seat 42, a connecting seat 35 can be arranged between the rotating platform 30 and the clamp assembly 20 to raise the clamp assembly 20.

[0041] In addition, the rotating platform 30 includes: a base 33; a rotating seat 31, which is rotatably connected to the base 33; and a second motor 43, which is arranged on the base 33 and is drivingly connected to the rotating seat 31, and is used to drive the rotating seat 31 to rotate relative to the base 33. The second motor 43 and the rotating seat 31 are driven by a gear 11 group. The base 33 and the rotating seat 31 are both hollow, and a gas-electric integrated slip ring 34 can be arranged in the rotating platform 30. For further reference, Figure 4 Since the first driving member 22 adopts a cylinder, the cylinder must rotate with the rotating seat 31. Therefore, by connecting the working air port of the first driving member 22 with the air port at one end of the gas-electric integrated slip ring 34, the external air source is connected with the air port at the other end of the gas-electric integrated slip ring 34. Therefore, when the first driving member 22 rotates, its air pipe will not entangle the rotating seat 31. When the first driving member 22 adopts an electric cylinder, the electric cylinder can also be powered by the gas-electric integrated slip ring 34 to avoid wire entanglement. In order to maintain a certain distance between the workpiece 10 and the mounting seat 21, to reserve enough space for the welding nozzle to approach the joint and not interfere with the mounting seat 21, a cushion block 25 can be set between the workpiece 10 and the mounting seat 21 to raise the workpiece 10, and the cushion block 25 is plugged into the mounting seat 21, and the two can be coaxially arranged.

[0042] Reference Figure 1The present application also proposes a welding device, including the above-mentioned welding fixture, the welding device also includes a manipulator 70 arranged above the welding fixture and a welding head driven and connected to the manipulator 70. In the embodiment of the present application, the manipulator 70 can be an articulated manipulator 70, or a three-axis orthogonal drive module. The welding device includes a machine table 51 and a frame 52 arranged on the machine table 51, and the welding fixture is arranged on the machine table 51. The manipulator 70 is arranged on the frame 52 and is located above the machine table 51. The manipulator 70 includes two X-axis drive modules arranged on the frame 52, a Y-axis drive module arranged at the drive end of the two X-axis drive modules, and a Z-axis drive module arranged at the mobile end of the Y-axis drive module. The welding head is arranged at the mobile end of the Z-axis drive module, and the welding nozzle is arranged at the lower end of the welding head. The manipulator 70 can drive the welding nozzle to move to approach the joint on the workpiece 10.

[0043] In some embodiments, reference Figure 1 The welding equipment further includes a translation assembly 60, which is used to drive the welding fixture to translate so as to enter and exit the working area of ​​the welding machine head. The translation assembly 60 can adopt a linear drive module arranged on the machine table 51, and the welding fixture is arranged at the moving end of the linear drive module. At the same time, the driving direction of the linear drive module is along the X-axis direction. The translation assembly 60 can be set to load and unload the welding fixture when the welding fixture is outside the working area, so that the welding fixture has a larger loading and unloading space for the above operations.

[0044] In addition, the welding device further comprises an outer cover for accommodating the manipulator 70 and the welding fixture and a fume purifier disposed on one side of the outer cover, and the fume purifier is connected to the outer cover. The outer cover is disposed on the machine table 51 to prevent the fumes generated by welding from escaping, and the fume purifier can extract the air in the outer cover to filter the fumes and purify the air in the outer cover, thereby preventing the fumes from contaminating the welding machine head.

[0045] In some embodiments, reference Figure 1 The welding equipment includes two sets of welding fixtures and two sets of translation assemblies 60 that are connected to the two sets of welding fixtures in a one-to-one driving manner. In this embodiment, by providing two sets of welding fixtures and two sets of translation assemblies 60, the two sets of welding fixtures can be loaded and unloaded in rotation to improve welding efficiency.

[0046] Reference Figure 1 and Figure 4 In the embodiment of the present application, the principle of the welding fixture is as follows:

[0047] The welding fixture includes a clamping assembly, a rotating platform 30 and a flipping platform 40. The clamping assembly 20 includes a mounting seat 21 for placing a workpiece 10, a clamping member 24 disposed on the mounting seat 21, and a first driving member 22 drivingly connected to the clamping member 24, wherein the first driving member 22 is used to drive the clamping member 24 to move to clamp the workpiece 10; the rotating platform 30 is drivingly connected to the mounting seat 21, and is used to drive the workpiece 10 to rotate around its own axis; the flipping platform 40 is drivingly connected to the rotating platform 30, and is used to drive the rotating platform 30 to rotate a set angle, and the rotation center of the flipping platform 40 is perpendicular to the rotation center of the rotating platform 30. After the workpiece 10 is clamped on the clamping assembly, the flipping platform 40 can drive the holding assembly and the workpiece 10 to flip a certain angle, so that the workpiece 10 is deflected to one side from a vertically placed state to expose the area to be welded. The welding nozzle can directly descend to one side of the workpiece 10 to approach the area to be welded. Meanwhile, during the welding process, the welding nozzle can remain stationary, and the rotating platform 30 drives the workpiece 10 to rotate so as to weld a circle around the periphery of the workpiece 10 . The degree of freedom of the welding nozzle is relatively low.

[0048] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A welding fixture, characterized in that: include: A fixture assembly, comprising a mounting seat for placing a workpiece, a clamping member disposed on the mounting seat, and a first driving member drivingly connected to the clamping member, wherein the first driving member is used to drive the clamping member to move so as to clamp the workpiece; A rotating platform is drivingly connected to the mounting seat and is used to drive the workpiece to rotate around its own axis; The flipping platform is drivingly connected to the rotating platform and is used to drive the rotating platform to rotate a set angle. The rotation center of the flipping platform is perpendicular to the rotation center of the rotating platform.

2. The welding fixture according to claim 1, characterized in that: The clamp assembly also includes a connecting rod that passes through the mounting seat, one end of the connecting rod is drivingly connected to the first driving member, and the other end is provided with a protrusion, and the clamping member is clamped on the end of the connecting rod provided with the protrusion.

3. The welding fixture according to claim 2, characterized in that: A clamping groove is formed on the side wall of the clamping member, and the clamping groove is used for clamping with the connecting rod. One end of the clamping member is used for abutting against the protrusion, and the other end is used for abutting against the workpiece.

4. The welding fixture according to claim 1, characterized in that: The flip platform comprises: Mounting frame; A receiving seat, rotatably connected to the mounting frame, and used for mounting the rotating platform; The first motor is arranged on the mounting frame and is drivingly connected to the receiving seat.

5. The welding fixture according to claim 1, characterized in that: The rotating platform comprises: Base; A rotating seat, rotatably connected to the base; The second motor is arranged on the base and is drivingly connected to the rotating seat, and is used for driving the rotating seat to rotate relative to the base.

6. A welding device, characterized in that: The welding device comprises the welding fixture according to any one of claims 1 to 5, and the welding device further comprises a manipulator disposed above the welding fixture and a welding head driven and connected to the manipulator.

7. The welding device according to claim 6, characterized in that The welding equipment further comprises a translation assembly, and the translation assembly is used to drive the welding fixture to translate so as to enter and exit the working area of ​​the welding head.

8. The welding device according to claim 7, characterized in that The welding equipment further comprises an outer cover for accommodating the manipulator and the welding fixture, and a fume purifier arranged on one side of the outer cover, wherein the fume purifier is communicated with the outer cover.

9. The welding device according to claim 7, characterized in that: The welding equipment comprises two groups of welding fixtures and two groups of translation components which are drive-connected to the two groups of welding fixtures in a one-to-one correspondence.

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