Vacuum brazing clamp for annular piece

Abstract

The utility model discloses an annular piece vacuum brazing clamp, belongs to the technical field of vacuum brazing clamps, and solves the problems that an inner ring and an outer ring of an existing device are inconvenient to adjust to be in a concentric circle state, a gap between the inner ring and the outer ring is easy to be uneven, and the vacuum brazing quality is affected. Sliding grooves are symmetrically formed in the left side and the right side of the top face of the bottom plate, external fixing assemblies are arranged in the sliding grooves, an internal fixing assembly is arranged in the middle of the top face of the bottom plate, a first threaded rod is driven by a first hand wheel to rotate, and a sliding block and an arc-shaped plate on the top face of the sliding block can be driven to move towards the side close to the peripheral face of an outer ring; then the outer ring is clamped and fixed to the middle of the top face of the bottom plate through the arc-shaped plates, the arc-shaped blocks make contact with the inner circumferential face of the inner ring, the arc-shaped blocks can be fixed to the middle of the top face of the bottom plate, the outer ring and the inner ring can be stably clamped and fixed, and the purpose that the outer ring and the inner ring are conveniently adjusted to be in a concentric circle state is achieved; and the vacuum brazing quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum brazing fixture technology, specifically a ring-shaped vacuum brazing fixture. Background Technology

[0002] Vacuum brazing is a process in which brazing filler metal is heated to a temperature above but below the melting point of the base metal in a vacuum furnace, causing the filler metal to melt and flow, thereby joining two or more metals. When vacuum brazing ring-shaped parts, brazing filler metal is first placed between the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring. Then, brazing fixtures are used to clamp and fix the inner and outer rings together. Finally, the parts are placed in a vacuum brazing furnace for heating and heat preservation to complete the vacuum brazing process.

[0003] A search revealed that patent application number 202121612084.6 discloses a vacuum brazing fixture for annular components, comprising a positioning ring with a diameter smaller than that of the inner ring to be brazed, and a plurality of radially threaded through holes evenly spaced on the positioning ring; it also includes a plurality of clamping blocks located between the positioning ring and the inner ring, the front end face of the clamping blocks being an arc-shaped surface with the curvature of the arc surface matching that of the inner circumferential surface of the inner ring; and a plurality of clamping bolts.

[0004] Although the vacuum brazing fixture for the annular component presses the inner circumference of the inner ring against the arc-shaped surface of the inner ring by the front end of the clamping block, thereby subjecting the inner ring to a uniform clamping force and making the inner ring and outer ring fit tightly together, the vacuum brazing fixture for the annular component is not convenient for adjusting the inner ring and outer ring to a concentric circle state, which can easily lead to uneven gaps between the inner ring and outer ring, affecting the quality of vacuum brazing.

[0005] Therefore, we propose a vacuum brazing fixture for ring-shaped parts. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a ring-shaped vacuum brazing fixture, which solves the problem that existing devices are not convenient for adjusting the inner and outer rings to a concentric circle state, which easily leads to uneven gaps between the inner and outer rings and affects the quality of vacuum brazing.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a vacuum brazing fixture for annular parts, comprising a base plate, on which an outer ring and an inner ring to be vacuum brazed are placed, the inner ring being located within the outer ring;

[0008] The top surface of the base plate has symmetrical sliding grooves on the left and right sides, and external fixing components are provided in the sliding grooves. An internal fixing component is provided in the middle of the top surface of the base plate.

[0009] The external fixing assembly includes a first threaded rod that is rotatably fitted in the middle of the base plate. The two ends of the first threaded rod are rotatably mounted on the side walls of the sliding grooves on the left and right sides via bearing rings. Two sliders with opposite thread directions are threaded onto the two ends of the first threaded rod. The two sliders are slidably fitted in the two sliding grooves respectively. An arc-shaped plate is fixedly installed on the top surface of the slider.

[0010] Preferably, the bottom surface of the arc-shaped plate and the top surface of the base plate are attached to each other, and the right end of the first threaded rod is fixedly installed with a first handwheel through the side wall of the base plate, wherein the first handwheel facilitates the rotation of the first threaded rod.

[0011] Preferably, the internal fixing assembly includes a sliding frame fixedly installed in the middle of the top surface of the base plate. A rectangular groove is opened through the middle of the left and right sides of the sliding frame. A second threaded rod is provided inside the sliding frame. Two rectangular columns with opposite thread directions are threaded onto both ends of the second threaded rod. The two rectangular columns are slidably fitted into the two rectangular grooves respectively. When the second threaded rod rotates, it can drive the two rectangular columns to move simultaneously along the inner wall of the rectangular groove to the side away from the sliding frame or to the side closer to the sliding frame.

[0012] Preferably, an arc-shaped block is fixedly installed at the end of the rectangular column away from the sliding frame, the bottom surface of the arc-shaped block is in contact with the top surface of the base plate, and a limit frame is fixedly fitted on the outer surface of the end of the rectangular column located inside the base plate. The inner ring is fixed to the middle of the top surface of the base plate by contacting the inner circumferential surface of the arc-shaped block.

[0013] Preferably, a U-shaped plate is fixedly installed in the middle of the top surface of the sliding frame, and a rotating rod is rotatably installed in the middle of the top surface of the U-shaped plate via a bearing ring. A second bevel gear is fixedly installed at the bottom end of the rotating rod, and a first bevel gear meshing with the second bevel gear is fixedly fitted in the middle of the second threaded rod. A second handwheel is fixedly installed at the top end of the rotating rod. The second handwheel facilitates the rotation of the rotating rod and the second bevel gear, which in turn drives the first bevel gear and the second threaded rod to rotate.

[0014] Preferably, symmetrically distributed handles are fixedly installed on the front and rear sides of the top surface of the base plate, which facilitates the movement of the base plate.

[0015] This utility model provides a vacuum brazing fixture for ring-shaped parts. It has the following beneficial effects:

[0016] This annular vacuum brazing fixture, driven by a first handwheel, rotates a first threaded rod, which moves a slider and its top surface arc plate closer to the outer circumference of the outer ring. The arc plate then clamps and fixes the outer ring to the center of the top surface of the base plate. The arc block contacts the inner circumference of the inner ring, fixing it to the center of the top surface of the base plate. This provides stable clamping and fixing of the outer and inner rings, facilitating the adjustment of the outer and inner rings to a concentric circle state. This ensures a uniform gap between the outer and inner rings, improving the quality of vacuum brazing. It solves the problem of existing devices being unable to easily adjust the inner and outer rings to a concentric circle state, leading to uneven gaps and affecting vacuum brazing quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the base plate structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the external fixing component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled internal fixing components of this utility model.

[0021] In the diagram: 1. Base plate; 11. Slide groove; 12. Handle; 2. External fixing component; 21. First threaded rod; 22. First handwheel; 23. Slider; 24. Arc plate; 3. Internal fixing component; 31. Slide frame; 32. Rectangular groove; 33. Rectangular column; 34. Second threaded rod; 35. Arc block; 36. Limiting frame; 37. First bevel gear; 38. U-shaped plate; 39. Rotating rod; 310. Second bevel gear; 311. Second handwheel; 4. Outer ring; 5. Inner ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] like Figure 1-4As shown: The system includes a base plate 1, on which are placed an outer ring 4 and an inner ring 5 to be vacuum brazed. The inner ring 5 is located inside the outer ring 4. Slide grooves 11 are symmetrically formed on the left and right sides of the top surface of the base plate 1. External fixing components 2 are installed in the slide grooves 11. An internal fixing component 3 is located in the center of the top surface of the base plate 1. The external fixing component 2 includes a first threaded rod 21 rotatably fitted in the center of the base plate 1. The two ends of the first threaded rod 21 are rotatably mounted on the side walls of the slide grooves 11 on the left and right sides via bearing rings. Two sliders 23 with opposite thread directions are threaded onto the two ends of the first threaded rod 21. The two sliders 23 are respectively... The sliding assembly is housed in two sliding grooves 11. An arc-shaped plate 24 is fixedly installed on the top surface of the slider 23, and the bottom surface of the arc-shaped plate 24 is in contact with the top surface of the base plate 1. A first handwheel 22 is fixedly installed through the side wall of the base plate 1 at the right end of the first threaded rod 21. The internal fixing assembly 3 includes a sliding frame 31 fixedly installed in the middle of the top surface of the base plate 1. Rectangular grooves 32 are opened through the middle of both sides of the sliding frame 31. A second threaded rod 34 is provided inside the sliding frame 31. Two rectangular posts 33 with opposite thread directions are threaded onto both ends of the second threaded rod 34. The two rectangular posts 33 are slidably fitted into the two rectangular grooves 31 respectively. Inside the base plate 1, an arc-shaped block 35 is fixedly installed at the end of the rectangular column 33 away from the sliding frame 31. The bottom surface of the arc-shaped block 35 is in contact with the top surface of the base plate 1. A limit frame 36 is fixedly fitted on the outer surface of the end of the rectangular column 33 located inside the base plate 1. A U-shaped plate 38 is fixedly installed in the middle of the top surface of the sliding frame 31. A rotating rod 39 is rotatably installed in the middle of the top surface of the U-shaped plate 38 via a bearing ring. A second bevel gear 310 is fixedly installed at the bottom end of the rotating rod 39. A first bevel gear 37 that meshes with the second bevel gear 310 is fixedly fitted in the middle of the second threaded rod 34. A second handwheel 3 is fixedly installed at the top end of the rotating rod 39. 11. By rotating the first threaded rod 21 through the first handwheel 22, the slider 23 and the arc plate 24 on its top surface can be moved closer to the outer circumference of the outer ring 4. Then, the outer ring 4 is clamped and fixed in the middle of the top surface of the base plate 1 by the arc plate 24. By contacting the inner circumference of the inner ring 5 through the arc block 35, the arc block 35 can be fixed in the middle of the top surface of the base plate 1. The outer ring 4 and the inner ring 5 can be stably clamped and fixed, which makes it easy to adjust the outer ring 4 and the inner ring 5 to be in a concentric circle state, so as to make the gap between the outer ring 4 and the inner ring 5 uniform and improve the quality of vacuum brazing.

[0025] Example 2:

[0026] like Figure 1-3 As shown: symmetrically distributed handles 12 are fixedly installed on the front and rear sides of the top surface of the base plate 1, which facilitates the movement of the base plate 1.

[0027] The working principle and usage process of this utility model: When using this annular vacuum brazing fixture, first place the outer ring 4 on the top surface of the base plate 1. Then, drive the first threaded rod 21 to rotate via the first handwheel 22, which will move the slider 23 and the arc-shaped plate 24 on its top surface towards the side closer to the outer circumference of the outer ring 4. The arc-shaped plate 24 then clamps and fixes the outer ring 4, securing it to the center of the top surface of the base plate 1. Place the inner ring 5 on the top surface of the base plate 1, within the inner ring of the outer ring 4. Then, drive the rotating rod 39 and the second bevel gear 310 to rotate via the second handwheel 311. The setting of 0 and the first bevel gear 37 can drive the second threaded rod 34 to rotate, and then drive the rectangular columns 33 at both ends of the second threaded rod 34 to move towards the side closer to the inner circumferential surface of the inner ring 5, until the arc block 35 contacts the inner circumferential surface of the inner ring 5, so that the arc block 35 can be fixed in the middle of the top surface of the base plate 1. At this time, the outer ring 4 and the inner ring 5 are in a concentric circle state. Then, brazing filler metal is inserted between the inner circumferential surface of the outer ring 4 and the outer circumferential surface of the inner ring 5, and vacuum brazing can be performed. After the vacuum brazing is completed, the outer fixing component 2 and the inner fixing component 3 fix the outer ring 4 and the inner ring 5, and the ring part after vacuum brazing can be obtained.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum brazing fixture for annular parts, comprising a base plate (1), wherein an outer ring (4) and an inner ring (5) to be vacuum brazed are placed on the base plate (1), and the inner ring (5) is located inside the outer ring (4); Its features are: The top surface of the base plate (1) is provided with symmetrical sliding grooves (11) on the left and right sides, and an external fixing component (2) is provided in the sliding groove (11). An internal fixing component (3) is provided in the middle of the top surface of the base plate (1). The external fixing component (2) includes a first threaded rod (21) that is rotatably fitted in the middle of the base plate (1). The two ends of the first threaded rod (21) are rotatably mounted on the side walls of the slide grooves (11) on the left and right sides via bearing rings. The two ends of the first threaded rod (21) are threaded with two sliders (23) with opposite thread directions. The two sliders (23) are slidably fitted in the two slide grooves (11) respectively. An arc plate (24) is fixedly installed on the top surface of the slider (23).

2. The ring-shaped vacuum brazing fixture according to claim 1, characterized in that: The bottom surface of the arc plate (24) is attached to the top surface of the base plate (1), and the right end of the first threaded rod (21) is fixedly installed with a first handwheel (22) through the side wall of the base plate (1).

3. The vacuum brazing fixture for annular components according to claim 1, characterized in that: The internal fixing component (3) includes a sliding frame (31) fixedly installed in the middle of the top surface of the base plate (1). A rectangular groove (32) is provided through the middle of the left and right sides of the sliding frame (31). A second threaded rod (34) is provided inside the sliding frame (31). Two rectangular columns (33) with opposite thread directions are threaded onto both ends of the second threaded rod (34). The two rectangular columns (33) are slidably fitted into the two rectangular grooves (32).

4. A vacuum brazing fixture for annular components according to claim 3, characterized in that: An arc-shaped block (35) is fixedly installed at the end of the rectangular column (33) away from the sliding frame (31). The bottom surface of the arc-shaped block (35) is in contact with the top surface of the base plate (1). A limit frame (36) is fixedly fitted on the outer surface of the end of the rectangular column (33) inside the base plate (1).

5. A vacuum brazing fixture for annular components according to claim 4, characterized in that: A U-shaped plate (38) is fixedly installed in the middle of the top surface of the sliding frame (31). A rotating rod (39) is rotatably installed in the middle of the top surface of the U-shaped plate (38) through a bearing ring. A second bevel gear (310) is fixedly installed at the bottom end of the rotating rod (39). A first bevel gear (37) that meshes with the second bevel gear (310) is fixedly fitted in the middle of the second threaded rod (34). A second handwheel (311) is fixedly installed at the top end of the rotating rod (39).

6. A vacuum brazing fixture for annular components according to claim 1, characterized in that: The bottom plate (1) has symmetrically distributed handles (12) fixedly installed on the front and rear sides of the top surface.

Images