Laser welding clamp

Abstract

The utility model belongs to the technical field of welding devices, and particularly discloses a laser welding clamp which comprises a main body portion, a connecting groove is formed in the main body portion, and the main body portion is used for being connected with rotating power. The limiting part is arranged on the side, away from the connecting groove, of the main body part, a positioning hole and a limiting hole are formed in the main body part and located in the limiting part, the axis of the positioning hole coincides with the axis of the main body part, and the limiting hole is formed in one side of the main body part. By means of the positioning hole formed in the central axis and the eccentric limiting hole, welding of circumferential welding seams of a workpiece with a non-circle-center shaft is achieved, and meanwhile welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a laser welding fixture. Background Art

[0002] For workpieces with circumferential welds, we always hope that the workpiece can be rotated to achieve welding. In laser welding operations, the workpiece often needs to be accurately positioned and fixed to ensure welding quality and accuracy. Traditional straight seam laser welding machines often require the use of a rotating worktable with a three-jaw or four-jaw chuck to achieve circumferential welds.

[0003] In the laser welding process, there are often many difficulties when welding the circumferential weld of a non-circular shaft, such as inaccurate positioning and difficulty in ensuring welding quality. In the prior art, the circumferential weld position of the rotating shaft at the non-circular shaft cannot be completed by conventional positioning fixtures. Most of the welding of the circumferential weld of the non-circular shaft is achieved by manual auxiliary fixture rotation, and it cannot be directly connected to the rotating shaft of the rotating equipment, which will result in poor welding quality, especially inconsistent weld appearance. In view of this, the applicant proposed a laser welding fixture. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a laser welding fixture for solving the problem of poor welding quality when welding workpieces with non-circular shafts in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a laser welding fixture, comprising:

[0006] A main body, wherein the main body is provided with a connection groove and is used for connecting with a rotating power;

[0007] The limiting portion is arranged on a side of the main body away from the connecting groove. The main body is provided with a positioning hole and a limiting hole. The positioning hole and the limiting hole are located in the limiting portion. The axis of the positioning hole coincides with the axis of the main body. The limiting hole is arranged on one side of the main body.

[0008] Optionally, a mounting groove is provided on the limiting portion, and the positioning hole and the limiting hole are both connected to the mounting groove.

[0009] Optionally, the limiting portion is an annular plate, and the axis of the limiting portion is located so that the axis of the positioning hole coincides with the perpendicular bisector of the axis of the limiting hole and the connecting line of the center of the positioning hole and the limiting hole.

[0010] Optionally, the limiting portion and the main body are integrally formed, and the positioning hole and the limiting hole are both connected to the connecting groove.

[0011] Optionally, the limiting portion is detachably connected to the main body.

[0012] Optionally, a limiting groove for positioning a workpiece is formed between the limiting portion and the main body.

[0013] Optionally, the main body is annular, and an outer diameter of the main body is greater than an outer diameter of the limiting portion.

[0014] As described above, the laser welding fixture proposed by the utility model has the following beneficial effects:

[0015] (1) Compared with the prior art, the utility model can be connected to the rotational power through the main body, and can limit the workpiece through the limit part. Moreover, through the positioning holes and the limit holes, one of the holes coincides with the axis of the main body, so that the main body rotates and drives a part of the workpiece that coincides with the axis of the main body to rotate synchronously. There is no need to use additional tooling to achieve welding, thereby ensuring the welding quality.

[0016] (2) Compared with the prior art, the present invention can be directly connected to the equipment that provides the rotational power, without the need to design and manufacture other tooling and rotating devices, thereby reducing the cost of welding non-circular parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of an embodiment of the utility model;

[0018] Figure 2 Shown is a top view of an embodiment of the utility model;

[0019] Figure 3 Shown is a cross-sectional view of an embodiment of the utility model;

[0020] Figure 4 Shown is a cross-sectional view of another embodiment of the utility model;

[0021] Figure 5 Shown is a schematic diagram of a workpiece in one embodiment of the present utility model.

[0022] Description of reference numerals:

[0023] Main body 1, positioning hole 2, limiting hole 3, mounting groove 4, limiting part 5, limiting groove 6, connecting groove 7, connecting screw 8, base 9, connecting foot 10, welding point 11. DETAILED DESCRIPTION

[0024] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] It should be noted that the diagrams provided in the present embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be changed at will, and the layout of the components may be more complicated. The structure, proportion, size, etc. shown in the diagrams attached to this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0026] Before describing the embodiment of the present invention, the application scenario of the present invention is described. The present invention is mainly used for circumferential welding of non-circular parts, such as Figure 5 The workpiece shown includes a base 9 and two connecting legs 10, and the two connecting legs 10 are respectively located on both sides of the central axis of the base 9. The base 9 and the connecting legs 10 are connected by circumferential welding, and the welding point 11 is on the upper surface of the base 9. The rotary power mechanism in this embodiment adopts a welding positioner to realize the rotation of the workpiece, and the axis of the connecting leg 10 does not correspond to the rotary power mechanism providing the rotary power. The axis of the rotary power mechanism corresponds to the axis of the base 9. Therefore, the base 9 and the connecting leg 10 cannot be directly welded during welding.

[0027] like Figure 1-Figure 4 As shown, the utility model provides a laser welding fixture.

[0028] Embodiment 1:

[0029] In an exemplary embodiment, a laser welding fixture includes:

[0030] A main body 1, the main body 1 is provided with a connection groove 7, and the main body 1 is used to connect with a rotating power;

[0031] The limiting portion 5 is arranged on the side of the main body 1 away from the connecting groove 7. The main body 1 is provided with a positioning hole 2 and a limiting hole 3. The positioning hole 2 and the limiting hole 3 are located inside the limiting portion 5. The axis of the positioning hole 2 coincides with the axis of the main body 1. The limiting hole 3 is arranged on one side of the main body 1.

[0032] In this embodiment, the main body 1 can be connected to the rotational power, and the limiting part 5 can limit the workpiece. The positioning hole 2 and the limiting hole 3 are provided, and one of the holes coincides with the axis of the main body 1. The rotation of the main body 1 drives the part of the workpiece that coincides with the axis of the main body 1 to rotate synchronously. There is no need to use additional tooling to achieve welding, thereby ensuring the welding quality.

[0033] At the same time, the utility model can be directly connected to the equipment providing the rotational power, and there is no need to design and manufacture other tooling and rotating devices, thus reducing the cost of welding non-circular center parts.

[0034] For example, Figure 1 As shown, the limiting portion 5 in this embodiment is an annular plate, and the axis of the limiting portion 5 coincides with the perpendicular midline of the connecting line of the center of the positioning hole 2 and the limiting hole 3 .

[0035] In an exemplary embodiment, a mounting groove 4 is provided on the limiting portion 5 , and both the positioning hole 2 and the limiting hole 3 are communicated with the mounting groove 4 .

[0036] The mounting groove 4 provided in this embodiment can be used for positioning the workpiece, and the specific shape of the mounting groove 4 can be designed according to the specific shape of the workpiece.

[0037] Exemplarily, the mounting groove 4 in this embodiment is a through groove, which is communicated with the connecting groove 7 .

[0038] In an exemplary embodiment, the limiting hole 3 is located on one side of the positioning hole 2 so that the axis of the limiting portion 5 coincides with the perpendicular bisector of the axis of the positioning hole 2 and the axis of the limiting hole 3 and the connecting line of the centers of the positioning hole 2 and the limiting hole 3 .

[0039] In this embodiment, the setting direction, distance and size of the limiting hole 3 relative to the positioning hole 2 are designed according to the specific size of the workpiece. For example, the two connecting feet 10 in this embodiment have the same size. Therefore, the radii of the limiting hole 3 and the positioning hole 2 are the same, and the distance between the two is the same as the distance between the connecting feet 10.

[0040] It is worth noting that in this embodiment, the distance between the positioning hole 2 and the limiting hole 3 is set according to the specific structure on the workpiece, but in the specific setting, one of the limiting hole 3 and the positioning hole 2 needs to coincide with the axis of the main body 1, that is, after the workpiece is installed on the utility model, one of the connecting feet 10 corresponds to the rotating power mechanism.

[0041] In an exemplary embodiment, the limiting portion 5 is integrally formed with the main body 1 , and the positioning hole 2 and the limiting hole 3 are both connected to the connecting groove 7 .

[0042] In this embodiment, the limiting portion 5 and the main body 1 are integrally formed, which is convenient to manufacture and has lower cost.

[0043] In an exemplary embodiment, a limiting groove 6 for positioning a workpiece is formed between the limiting portion 5 and the main body 1 .

[0044] In this embodiment, the workpiece base 9 can be positioned by the formed limiting groove 6, and cooperate with the mounting groove 4 to improve the fixing effect of the workpiece.

[0045] In an exemplary embodiment, the main body 1 is annular and is used to connect the rotational power, and the outer diameter of the main body 1 is greater than the outer diameter of the limiting portion 5 , so that the limiting portion 5 can be installed on the main body 1 .

[0046] Embodiment 2:

[0047] The difference from Example 1 is that the limiting part 5 in this embodiment is installed on the main body 1 in a detachable connection manner. Specifically, multiple connecting parts are installed between the limiting part 5 and the main body 1 to achieve the connection between the limiting part 5 and the main body 1. The connecting parts in this embodiment use connecting screws 8, which are easy to install.

[0048] In this embodiment, a detachable connection is adopted so that the limiting portion 5 can be removed to match bases 9 of different sizes.

[0049] Specific implementation steps:

[0050] (1) An operator or other device places the positioning fixture on a three-jaw or four-jaw rotary table, wherein the three-jaw chuck or the four-jaw chuck is connected to the main body 1;

[0051] (2) The operator or other device simultaneously inserts the two connecting legs 10 of the assembled workpiece to be welded into the positioning hole 2 and the limiting hole 3 respectively, and the base 9 of the workpiece is placed inside the limiting groove 6. If necessary, the assembly position is fine-tuned to achieve the best assembly state before welding;

[0052] (3) When the laser welding machine gun head is controlled to remain stationary, the positioning fixture rotates together with the rotary table providing the rotational power, so that the positioning hole 2 coincides with the rotation axis of the main body 1, thereby achieving a sealed welding at the first circumferential weld position on the workpiece with the same rotation axis as the positioning hole 2 at the welding point 11;

[0053] (4) Adjust the position of the workpiece, swap the positions of the two connecting legs 10 of the workpiece, and repeat the action of step (3) to achieve sealing welding of the second circumferential weld position of the workpiece, thereby completing the welding of the circumferential weld of the workpiece with a non-circular axis without rotating the laser welding machine gun head.

[0054] In summary, the utility model realizes the welding of the circumferential weld of the workpiece with a non-circular axis by means of the positioning hole and the eccentric limiting hole arranged on the central axis, while ensuring the welding quality.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A laser welding fixture, characterized in that: include: A main body, wherein the main body is provided with a connection groove and is used for connecting with a rotating power; The limiting portion is arranged on a side of the main body away from the connecting groove. The main body is provided with a positioning hole and a limiting hole. The positioning hole and the limiting hole are located in the limiting portion. The axis of the positioning hole coincides with the axis of the main body. The limiting hole is arranged on one side of the main body.

2. The laser welding fixture according to claim 1, characterized in that: The limiting portion is provided with a mounting groove, and the positioning hole and the limiting hole are both communicated with the mounting groove.

3. The laser welding fixture according to claim 2, characterized in that: The limiting portion is an annular plate, and the axis of the limiting portion coincides with the perpendicular midline of the connecting line of the positioning hole and the center of the limiting hole.

4. The laser welding fixture according to claim 1, characterized in that: The limiting portion and the main body are integrally formed, and the positioning hole and the limiting hole are both communicated with the connecting groove.

5. The laser welding fixture according to claim 1, characterized in that: The limiting portion is detachably connected to the main body.

6. The laser welding fixture according to claim 1, characterized in that: A limiting groove for positioning a workpiece is formed between the limiting portion and the main body.

7. The laser welding fixture according to claim 3, characterized in that: The main body is annular, and the outer diameter of the main body is greater than the outer diameter of the limiting portion.

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