Special clamp for laser welding

Abstract

The utility model provides a clamp special for laser welding, and belongs to the technical field of part welding, and the clamp specifically comprises a bottom plate used for making contact with the outer ring of an annular part, the annular part surrounds the periphery of the bottom plate, and air outlet holes are formed in the bottom plate; the movable plate is located above the bottom plate and used for being pressed on the outer ring of the annular part, and the movable plate is provided with a hollowed-out area allowing the laser welding head to penetrate through; wherein the welding seam of the annular part is located above the air outlet hole, the welding seam of the annular part is located in the projection range of the hollowed-out area on the bottom plate, the air outlet hole corresponds to the hollowed-out area, and inert protective gas is introduced into the welding seam area and the hollowed-out area of the annular part through the air outlet hole. Through the treatment scheme, the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] The present application relates to the field of parts welding, and in particular to a special fixture for laser welding. Background Art

[0002] The W-shaped sealing ring used in aircraft engines not only compensates for and cushions axial displacement caused by dynamic wear, axial play, and vibration, but also achieves a seal by applying a specific pressure to the sealing end face through its own elastic force combined with the pressure of the sealing medium. This demonstrates the high manufacturing precision requirements for metal sealing rings.

[0003] The W sealing ring needs to be welded during the processing. At present, the company has purchased automatic laser welding equipment for the welding processing of the W sealing ring. However, the operator needs to hold the parts in hand to complete the welding. Utility Model Content

[0004] In view of this, the present application provides a special fixture for laser welding, which solves the problem in the prior art that operators need to hold parts when welding W sealing rings, thereby improving welding efficiency and welding quality.

[0005] The laser welding fixture provided in this application adopts the following technical solution:

[0006] A laser welding fixture is used for welding annular parts, wherein the weld seam of the annular parts is distributed along the axial direction of the annular parts. The laser welding fixture comprises:

[0007] A bottom plate, used for contacting the outer ring of the annular component, the annular component surrounds the outer periphery of the bottom plate, and the bottom plate is provided with an air outlet;

[0008] A movable plate is located above the bottom plate and is used to press against the outer ring of the annular part. The movable plate is provided with a hollow area for the laser welding head to pass through;

[0009] Among them, the weld of the annular part is located above the air outlet, and the weld of the annular part is located within the projection range of the hollow area on the base plate, and the air outlet is arranged corresponding to the hollow area, and the air outlet is used to introduce inert protective gas into the weld area and the hollow area of ​​the annular part.

[0010] Optionally, a ventilation pipe is provided in the base plate, and a groove is provided on the top surface of the base plate. One end of the ventilation pipe is located in the groove, and the other end of the ventilation pipe extends to the side of the base plate. The other end of the ventilation pipe is connected to an inert gas source, and the portion of the ventilation pipe corresponding to the groove is provided with several air outlet holes.

[0011] Optionally, the groove is in the shape of an elongated strip, the two ends of the groove are semicircular, the hollow area is in the shape of an elongated strip, the two ends of the hollow area are semicircular, the length direction of the hollow area is parallel to the length direction of the groove, and the width of the hollow area is smaller than the width of the groove, and the length direction of the groove is parallel to the length direction of the weld of the annular part placed on the base plate.

[0012] Optionally, the center of the hollow area is aligned with the center of the groove.

[0013] Optionally, the inner wall of the top of the hollow area is tapered, and the tapered portion of the hollow area gradually expands from bottom to top.

[0014] Optionally, the length direction of the vent tube is parallel to the length direction of the groove, the width of the vent tube is smaller than the width of the groove, and two exhaust holes are provided on the air outlet, the number of the air outlet holes in each row is multiple, and the arrangement direction of each exhaust hole is parallel to the length direction of the groove.

[0015] Optionally, the bottom plate includes a first end and a second end opposite to each other, and the movable plate includes a third end and a fourth end opposite to each other, and the first end corresponds to the third end;

[0016] A positioning through hole and a positioning groove are provided on the end portion of the base plate near the second end, the length direction of the positioning through hole and the depth direction of the positioning groove are perpendicular to the top surface of the base plate, the positioning groove is located on the top surface of the base plate, a positioning column is provided on the fourth end of the movable plate to cooperate with the positioning through hole, and a positioning protrusion is provided on the movable plate to cooperate with the positioning groove, the positioning column slides along the positioning through hole when the movement approaches and moves away from the base plate, and the positioning protrusion simultaneously approaches and moves away from the positioning groove when the movement approaches and moves away from the base plate.

[0017] Optionally, the base plate is used to be detachably mounted on a workbench of the pressure equipment by bolts, and the movable plate is used to be mounted on a downward pressure output end of the pressure equipment, and the pressure equipment provides a pressing force for the movable plate on the annular part.

[0018] In summary, the present application includes the following beneficial technical effects: when welding annular parts, the butt ends of the annular parts are pre-welded and pre-fixed, and then the annular parts are sleeved on the outer periphery of the base plate. At this time, the top of the annular part is located between the base plate and the movable plate. When adjusting the annular part, the weld of the annular part is located above the air outlet. The pressure device is controlled to move the movable plate downward. The movable plate presses both sides of the weld of the annular part against the base plate to fix the annular part. Then, the laser welding head passes through the hollow area to complete the welding of the butt ends of the annular part. During the welding process, the annular part is clamped by the base plate and the movable plate, which improves the stability of the annular part during welding, saves labor, and improves welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the special fixture for laser welding in this application;

[0021] Figure 2 A top view of the base plate of this application;

[0022] Figure 3 A top view of the movable panel of this application;

[0023] Figure 4 This is a structural diagram of the hollowed-out area of ​​this application.

[0024] Explanation of the accompanying reference numerals: 1. bottom plate; 11. groove; 12. vent pipe; 13. air outlet; 2. movable plate; 21. hollow area; 3. positioning through hole; 4. positioning groove; 5. positioning column; 6. positioning protrusion. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, 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 application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0027] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0028] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0029] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0030] The embodiment of the present application provides a special laser welding fixture for welding annular parts, wherein the weld seam of the annular parts is distributed along the axial direction of the annular parts.

[0031] like Figures 1 to 4 As shown, a special fixture for laser welding includes:

[0032] The bottom plate 1 is used to contact the outer ring of the annular component. The annular component surrounds the outer circumference of the bottom plate 1. The bottom plate 1 is provided with an air outlet 13.

[0033] The movable plate 2 is located above the base plate 1 and is used to press against the outer ring of the annular part. The second end corresponds to the fourth end. The movable plate 2 is provided with a hollow area 21 for the laser welding head to pass through.

[0034] Among them, the weld of the annular part is located above the air outlet 13, and the weld of the annular part is located within the projection range of the hollow area 21 on the base plate 1, and the air outlet 13 is arranged corresponding to the hollow area 21, and the air outlet 13 is used to introduce inert protective gas into the weld area and the hollow area 21 of the annular part.

[0035] The bottom plate 1 includes a first end and a second end relative to each other, and the movable plate 2 includes a third end and a fourth end relative to each other, and the first end and the third end correspond to each other. When the annular part is placed on the bottom plate 1, the axial direction of the annular part is parallel to the direction from the first end to the second end, and the annular part enters between the bottom plate 1 and the movable plate 2 along the direction from the first end to the second end; a positioning through hole 3 and a positioning groove 4 are provided on the end of the bottom plate 1 near the second end, and the length direction of the positioning through hole 3 and the depth direction of the positioning groove 4 are perpendicular to the top surface of the bottom plate 1, and the positioning groove 4 is located on the top surface of the bottom plate 1, and a positioning column 5 is provided on the fourth end of the movable plate 2 to cooperate with the positioning through hole 3, and a positioning protrusion 6 is provided on the movable plate 2 to cooperate with the positioning groove 4. When the movement approaches and moves away from the bottom plate 1, the positioning column 5 slides along the positioning through hole 3, and when the movement approaches and moves away from the bottom plate 1, the positioning protrusion 6 simultaneously approaches and moves away from the positioning groove 4.

[0036] The guiding and positioning structure of the base plate 1 and the movable plate 2 is located at the second end of the base plate 1. The annular part enters between the movable plate 2 and the base plate 1 from the first end of the base plate 1 and is sleeved on the outer periphery of the base plate 1. The base plate 1 is used to be detachably mounted on the workbench of the pressure equipment by bolts, and the movable plate 2 is used to be mounted on the downward pressure output end of the pressure equipment. The pressure equipment provides the movable plate 2 with a pressing force on the annular part. In order to avoid the pressure equipment from affecting the placement of the annular part, in an embodiment of the present application, a mounting bracket can be designed on the workbench of the pressure equipment. The bottom end of the mounting bracket is fixed on the workbench, and the top end of the mounting bracket is connected to the second end of the base plate 1, so that enough space is reserved below the first end of the base plate 1 to accommodate the annular part. The coordination of the positioning column 5, the positioning through hole 3, the positioning protrusion 6 and the positioning groove 4 in the present application improves the alignment efficiency of the base plate 1 and the movable plate 2, and prevents the hollow area 21 from deviating from the weld.

[0037] In the embodiment of the present application, when welding an annular part, the butt end of the annular part is pre-welded and pre-fixed, and then the annular part is sleeved over the outer periphery of the base plate 1. At this time, the top of the annular part is located between the base plate 1 and the movable plate 2. When adjusting the annular part, the weld of the annular part is located above the air outlet 13. The pressure device is controlled to move the movable plate 2 downward. The movable plate 2 presses both sides of the weld of the annular part against the base plate 1 to fix the annular part. The laser welding head then passes through the hollow area 21 to complete the welding of the butt end of the annular part. During the welding process, the annular part is clamped by the base plate 1 and the movable plate 2, which improves the stability of the annular part during welding, saves labor, and improves welding quality and efficiency.

[0038] A vent tube 12 is provided within the base plate 1. A groove 11 is provided on the top surface of the base plate 1. One end of the vent tube 12 is located in the groove 11, and the other end of the vent tube 12 extends to the side of the base plate 1. The other end of the vent tube 12 is connected to an inert gas source. The portion of the vent tube 12 corresponding to the groove 11 is provided with a plurality of outlet holes 13. In this embodiment of the present application, the inert gas is argon. In this embodiment of the present application, the length of the groove 11 and the hollow area 21 is greater than the length of the weld, ensuring that the groove 11 and the hollow area 21 completely cover the weld.

[0039] The groove 11 is long and narrow, with semicircular ends. The hollow area 21 is long and narrow, with semicircular ends. The length of the hollow area 21 is parallel to the length of the groove 11, and the width of the hollow area 21 is smaller than the width of the groove 11. The length of the groove 11 is parallel to the length of the weld of the annular component placed on the base plate 1. While ensuring that the groove 11 and the hollow area 21 can cover the weld, the opening size of the groove 11 and the hollow area 21 is reduced, thereby improving the clamping stability of the annular component by the base plate 1 and the movable plate 2.

[0040] In the embodiment of the present application, the center of the hollow area 21 is aligned with the center of the groove 11.

[0041] The inner wall of the top of the hollow area 21 is tapered, and the tapered portion of the hollow area 21 gradually expands from bottom to top. The tapered design facilitates the laser welding head to enter the hollow area 21.

[0042] The length direction of the vent pipe 12 is parallel to the length direction of the groove 11, the width of the vent pipe 12 is smaller than the width of the groove 11, and two exhaust holes 13 are provided on the air outlet 13, the number of the air outlet holes 13 in each row is multiple, and the arrangement direction of each exhaust hole 13 is parallel to the length direction of the groove 11.

[0043] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A special fixture for laser welding, characterized in that: Used for welding annular parts, wherein the weld of the annular parts is distributed along the axial direction of the annular parts, the laser welding fixture includes: A bottom plate (1) is used for contacting the outer ring of the annular component, the annular component surrounds the outer periphery of the bottom plate (1), and the bottom plate (1) is provided with an air outlet (13); A movable plate (2) is located above the bottom plate (1) and is used to press against the outer ring of the annular part. The movable plate (2) is provided with a hollow area (21) for the laser welding head to pass through. The weld of the annular part is located above the air outlet (13), and the weld of the annular part is located within the projection range of the hollow area (21) on the bottom plate (1), and the air outlet (13) is arranged corresponding to the hollow area (21), and the air outlet (13) is used to introduce inert protective gas into the weld area and the hollow area (21) of the annular part.

2. The laser welding fixture according to claim 1, characterized in that: A vent pipe (12) is provided in the base plate (1), a groove (11) is provided on the top surface of the base plate (1), one end of the vent pipe (12) is located in the groove (11), the other end of the vent pipe (12) extends to the side of the base plate (1), the other end of the vent pipe (12) is connected to an inert gas source, and a portion of the vent pipe (12) corresponding to the groove (11) is provided with a plurality of air outlet holes (13).

3. The laser welding fixture according to claim 2, characterized in that: The groove (11) is in the shape of an elongated strip, and both ends of the groove (11) are semicircular. The hollow area (21) is in the shape of an elongated strip, and both ends of the hollow area (21) are semicircular. The length direction of the hollow area (21) is parallel to the length direction of the groove (11), and the width of the hollow area (21) is smaller than the width of the groove (11). The length direction of the groove (11) is parallel to the length direction of the weld of the annular part placed on the bottom plate (1).

4. The laser welding fixture according to claim 3, characterized in that: The center of the hollow area (21) is aligned with the center of the groove (11).

5. The laser welding fixture according to claim 3, characterized in that: The inner wall of the top of the hollow area (21) is arranged in a cone shape, and the cone-shaped portion of the hollow area (21) gradually expands from bottom to top.

6. The laser welding fixture according to claim 3, characterized in that: The length direction of the vent pipe (12) is parallel to the length direction of the groove (11), the width of the vent pipe (12) is smaller than the width of the groove (11), and two exhaust holes (13) are provided on the air outlet hole (13), the number of the air outlet holes (13) in each row is multiple, and the arrangement direction of each exhaust hole (13) is parallel to the length direction of the groove (11).

7. The laser welding fixture according to claim 1, characterized in that: The bottom plate (1) includes a first end and a second end that are opposite to each other, and the movable plate (2) includes a third end and a fourth end that are opposite to each other, and the first end and the third end correspond to each other; A positioning through hole (3) and a positioning groove (4) are provided on the end portion of the bottom plate (1) near the second end. The length direction of the positioning through hole (3) and the depth direction of the positioning groove (4) are perpendicular to the top surface of the bottom plate (1). The positioning groove (4) is located on the top surface of the bottom plate (1). A positioning column (5) cooperating with the positioning through hole (3) is provided on the fourth end of the movable plate (2). A positioning protrusion (6) cooperating with the positioning groove (4) is provided on the movable plate (2). When the movable plate (1) moves closer to and farther from the bottom plate (1), the positioning column (5) slides along the positioning through hole (3). When the movable plate (1) moves closer to and farther from the bottom plate (1), the positioning protrusion (6) simultaneously moves closer to and farther from the positioning groove (4).

8. The laser welding fixture according to claim 1, characterized in that: The base plate (1) is used for being detachably mounted on a workbench of a pressure device via bolts, and the movable plate (2) is used for being mounted on a downward pressure output end of the pressure device, and the pressure device provides the movable plate (2) with a pressing force on the annular part.

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