A laser cladding auxiliary tool for improving precision

Abstract

The utility model relates to laser cladding technical field discloses a kind of laser cladding auxiliary tool of promoting precision, including base, motor-driven bidirectional lead screw is rotatably arranged in the lower portion of base, the both sides of bidirectional lead screw are uniformly provided with moving plate, each side sliding plate is connected with positioning frame, one positioning frame is uniformly provided with accommodating groove in the both sides, the both sides of another positioning frame are protrudingly provided with the sliding plate matched with accommodating groove, and the sliding plate is located in accommodating groove in initial state;The lower portion of base is provided with the laser cladding assembly of movable adjustment;The utility model can satisfy the laser cladding use of the inner wall of various diameter barrel, and the scope of application is wide, and simultaneously also not be influenced by barrel height, can be positioned to barrel in the process of laser cladding overall stretch into barrel, effectively promote the precision of laser cladding;It can be adjusted and stored after use, reduce the occupation of space, facilitate storage and transportation.

Description

Technical Field

[0001] This utility model relates to the field of laser cladding technology, and in particular to an auxiliary tooling for laser cladding that improves precision. Background Technology

[0002] Laser cladding is a novel surface modification technology that involves adding a cladding material to the surface of a substrate and then using a high-energy-density laser beam to fuse the material with a thin layer on the substrate surface, forming a metallurgically bonded cladding layer. Existing laser cladding assemblies are typically equipped with a robotic arm as an auxiliary tooling to move the assembly. However, because the robotic arm is often fixed to a base, it is easily obstructed by the outer wall of a barrel-shaped object when laser cladding is needed on the inner wall, preventing the assembly from reaching the required position and resulting in poor auxiliary performance.

[0003] Based on this utility model patent with publication number CN220579395U, a laser cladding auxiliary tooling is disclosed, including a fixing component. The fixing component includes a base, a fixing block slidably connected to the base, and a bidirectional lead screw threadedly connected to the fixing block. The fixing block is located on both sides of the middle of the bidirectional lead screw. A moving component is provided at the bottom of the base. The moving component includes a mounting part rotatably connected to the base, a first connecting sleeve slidably connected to the mounting part, a second connecting sleeve connected to the first connecting sleeve, a third connecting sleeve slidably connected to the second connecting sleeve, a rotating component for driving the mounting part to rotate, a first screw threadedly connected to the first connecting sleeve, and a second screw threadedly connected to the third connecting sleeve. This utility model can be easily fixed to the top of a barrel-shaped object by the fixing component, and the moving component can drive the laser cladding component to move along the inner wall of the barrel-shaped object, thereby performing laser cladding on the inner wall of the barrel-shaped object.

[0004] While the above solution can solve the laser cladding problem on the inner wall of barrel-shaped objects, its use still has the following problems: First, the base length is fixed, and the range of movement of the fixing block on it is limited. This makes it unsuitable for barrels with a diameter larger than the base length. If the base is directly inserted into a barrel with a larger diameter, the lack of positioning for the barrel and the base being suspended inside, coupled with the fact that the base is suspended by ropes, will cause swaying, affecting construction accuracy. Second, the fixed base length is inconvenient to adjust flexibly, resulting in a narrow range of applications. Furthermore, while meeting the positioning requirements for barrels of the same size, it occupies a large space in its initial state, making it inconvenient to carry and store. Therefore, there is an urgent need for a laser cladding auxiliary tool that can meet the requirements of laser cladding on the inner walls of barrels of various diameters, improve construction accuracy, and also be flexibly stored and transported conveniently. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary tooling for laser cladding that improves precision. It can be used for laser cladding of the inner walls of barrels of various diameters, has a wide range of applications, and is not affected by the height of the barrel. It can be inserted into the barrel to position it during the laser cladding process, effectively improving the precision of laser cladding. After use, it can be adjusted and stored to reduce space occupation and facilitate storage and transportation.

[0006] The present invention adopts the following technical solution:

[0007] A precision-enhancing laser cladding auxiliary fixture includes a base. A motor-driven bidirectional lead screw is rotatably mounted under the base. Movable plates are provided on both sides of the bidirectional lead screw. Each sliding plate is connected to a positioning frame. One positioning frame has receiving grooves on both sides, and the other positioning frame has sliding plates protruding from both sides that match the receiving grooves. In the initial state, the sliding plates are located within the receiving grooves. An adjustable laser cladding assembly is provided at the lower part of the base.

[0008] Preferably, the base is provided with symmetrical lifting lugs at its bottom.

[0009] Preferably, the base includes a top plate, with baffles symmetrically arranged on both sides of the bottom of the top plate, and a support plate arranged in the middle of the top plate between the two baffles. The bidirectional lead screw passes through the support plate and is rotatably connected to the baffles at both ends.

[0010] Preferably, each of the two positioning frames is rotatably equipped with a roller at the ends that are far apart from each other.

[0011] Preferably, a motor is provided at the middle of the bottom of the base, the motor shaft is connected to a support frame, a slide rod is slidably provided on the support frame, the slide rod passes through the support frame and one end extends out from the end of the support frame; a support is provided on the support frame and connected to the slide rod, the laser cladding assembly is provided on the support; a support plate is provided on the housing of the laser cladding assembly, and two limiting plates are provided at the bottom of the positioning frame at the corresponding end, the two limiting plates surround to form a limiting groove, and the support plate is located in the limiting groove.

[0012] Preferably, both the limiting plate and the support plate are arc-shaped structures.

[0013] Preferably, the support frame is provided with a limit block elastically arranged inside by a spring, and the slide rod is provided with a limit groove that matches the limit block. When the limit block is located in the limit groove, the spring is in a compressed state.

[0014] Preferably, the limiting blocks are symmetrically arranged at the upper and lower ends of the support frame.

[0015] Preferably, the bottom of the limiting block is configured as an arc-shaped structure, and the limiting groove is configured as an arc-shaped groove that matches the limiting block.

[0016] Preferably, one of the positioning frames has a receiving cavity on the side near the baffle, and the motor that drives the bidirectional lead screw is mounted on the baffle and is located in the receiving cavity in the initial state.

[0017] Compared with the prior art, the advantages of this utility model are as follows: This utility model sets a bidirectional lead screw on the base and two positioning frames connected to the slide plate on the bidirectional lead screw. The length adjustment of the entire tooling can be completed by the relative sliding of the two positioning frames. It has a wide range of applications and can meet the operation of larger diameter barrels. When working, it can be inserted into the barrel as a whole, and the end of the positioning frame is used to abut against the inner wall of the barrel for positioning, which increases the contact area with the barrel and effectively improves the construction accuracy. At the same time, since the positioning frame can be directly inserted into the barrel, it is not limited by the height of the barrel, and has strong practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0019] Figure 2 This is a partial cross-sectional view of the support frame according to an embodiment of this application;

[0020] Figure 3 This is a cross-sectional view of the base and positioning frame according to an embodiment of this application. Detailed Implementation

[0021] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0022] like Figures 1 to 3As shown, the laser cladding auxiliary fixture for improving precision according to this utility model includes a base 1. A bidirectional lead screw 2 driven by a motor is rotatably mounted below the base 1. The bidirectional lead screw 2 consists of two sections with opposite threads. Moving plates 3 are mounted on both sides of the bidirectional lead screw 2. Initially, the two moving plates 3 are positioned in the center of the base 1. Each moving plate 3 is connected to a positioning frame 4. One positioning frame 4 has receiving grooves 5 on both sides, and the other positioning frame 4 has protruding sliding plates 6 that match the receiving grooves 5 on both sides. Initially, the sliding plates 6 are located within the receiving grooves 5. During operation, as the bidirectional lead screw 2 rotates, it causes the two moving plates 3 to move away from each other, and the two positioning frames 4 also slide away from each other. The slide plate 6 will gradually slide out of the receiving groove 5. The relative sliding of the two positioning frames 4 can effectively extend the overall length of the tooling, expand the scope of application, and meet the positioning needs of large-sized barrel-shaped objects. After use, the two positioning frames 4 can slide and store in relative to each other, which can reduce the space occupied and facilitate storage and transportation. A laser cladding assembly 7 is provided at the lower part of the base 1. The laser cladding assembly 7 can move in a circular motion and horizontally relative to the base 1 in order to complete the laser cladding of the inner wall of the barrel-shaped object. The laser cladding assembly 7 is a common structure in the prior art. The specific structure and working principle are quite mature and well known to those skilled in the art. This application has not modified it, so it will not be described in detail here.

[0023] In this application, the positioning frame 4 and the base 1 can be inserted into the barrel as a whole. By controlling the relative sliding of the two positioning frames 4 and their contact with the inner wall of the barrel, the stability of the positioning frame 4, the base 1 and the barrel can be effectively guaranteed, which can effectively improve the construction accuracy. In addition, the positioning frame 4 and the base 1 can be inserted into the barrel as a whole without being limited by the height of the barrel, and the inner wall of the barrel can be flexibly laser cladding operation. It has a wide range of applications and strong practicality.

[0024] Furthermore, in this embodiment, the base 1 is symmetrically provided with lifting lugs 8 at its bottom for lifting and raising the entire fixture. The base 1 includes a top plate 1-1, with the lifting lugs 8 mounted on it. Symmetrically arranged baffles 1-2 are positioned on both sides of the bottom of the top plate 1-1, and a support plate 1-3 is located in the middle of the top plate 1-1 between the two baffles 1-2. A bidirectional lead screw 2 movably passes through the support plate 1-3, and its two ends are rotatably connected to the baffles 1-2 via bearings. One of the positioning frames 4 has a receiving cavity 9 on its side near the baffle 1-2. The motor driving the bidirectional lead screw 2 is mounted on the baffle 1-2 and is initially located within the receiving cavity 9, which improves the overall simplicity and integration of the fixture while reducing the space occupied.

[0025] In addition, rollers 10 are rotatably provided at the ends of the two positioning frames 4 that are far apart from each other. The rollers 10 can reduce frictional damage to the barrel wall when the positioning frame 4 moves down along the inner wall of the barrel during the working process.

[0026] Furthermore, a motor is installed at the bottom center of the base 1. The motor can be installed at the bottom of the support plate 1-3. The motor shaft is connected to the support frame 11. A slide rod 12 is slidably installed on the support frame 11, passing through the support frame 11 and extending out from the end of the support frame 11. A support 13 connected to the slide rod 12 is installed on the support frame 11, and the laser cladding assembly 7 is installed on the support 13. A support plate 14 is installed on the shell of the laser cladding assembly 7. Two limiting plates 15 are installed at the bottom of the positioning frame 4 at the corresponding end. The two limiting plates 15 enclose to form a limiting groove, and the support plate 14 is located in the limiting groove. During operation, as the positioning frame 4 moves, it will drive the support plate 14 to move through the limiting groove, thereby driving the laser cladding assembly 7 to slide along the support frame 11 towards the inner wall of the barrel, shortening the working distance. Then, the motor drives the support frame 11 to rotate, thus completing the laser cladding of the inner wall of the barrel. The limiting plate 15 and the support plate 14 are both coaxial arc-shaped structures. This design ensures that the support plate 14 can pass smoothly through the limiting groove when the support frame 11 rotates.

[0027] Furthermore, a limiting block 16 is elastically provided inside the support frame 11 via a spring 17, and a limiting groove 18 matching the limiting block 16 is provided on the slide rod 12. When the limiting block 16 is located within the limiting groove 18, the spring 17 is in a compressed state. This arrangement increases the frictional force when the slide rod 12 moves, ensuring that the slide rod 12 can only move along the length of the support frame 11 under the action of external force, preventing the slide rod 12 from moving when the support frame 11 rotates. Preferably, the limiting blocks 16 are symmetrically arranged at the upper and lower ends inside the support frame 11; additionally, the bottom of the limiting block 16 is preferably designed as an arc-shaped structure, and the limiting groove 18 is designed as an arc-shaped groove matching the limiting block 16. This ensures increased friction while reducing wear between the limiting block 16 and the limiting groove 18, extending their service life.

[0028] In use, the lifting base 1 enters the barrel, and then the bidirectional screw is rotated to make the two positioning frames 4 move away from each other and abut against the inner wall of the barrel. During this process, the laser cladding assembly 7 will be brought out with the movement of the positioning frames 4. Finally, the support frame 11 is rotated to complete the laser cladding of the inner wall of the barrel. The positioning frames 4 can be moved along the inner wall of the barrel by the lifting rope to achieve the laser cladding operation of the inner wall of the barrel from top to bottom. The structure is simple, the operation is convenient, and the practicality is strong.

Claims

1. A laser cladding auxiliary fixture for improving precision, characterized in that: The system includes a base, under which a motor-driven bidirectional lead screw is rotatably mounted. Movable plates are mounted on both sides of the bidirectional lead screw, and each sliding plate is connected to a positioning frame. One positioning frame has receiving grooves on both sides, while the other positioning frame has sliding plates protruding from both sides that match the receiving grooves. Initially, the sliding plates are located within the receiving grooves. An adjustable laser cladding assembly is mounted on the lower part of the base.

2. The laser cladding auxiliary tooling for improving accuracy according to claim 1, characterized in that: The base is symmetrically provided with lifting lugs at its bottom.

3. The laser cladding auxiliary tooling for improving accuracy according to claim 1, characterized in that: The base includes a top plate, with baffles symmetrically arranged on both sides of the bottom of the top plate, and a support plate arranged in the middle of the top plate between the two baffles. The bidirectional lead screw passes through the support plate and is rotatably connected to the baffles at both ends.

4. The laser cladding auxiliary tooling for improving accuracy according to claim 1, characterized in that: Both of the aforementioned positioning frames have rollers rotatably mounted at their ends that are far apart from each other.

5. The laser cladding auxiliary tooling for improving accuracy according to claim 1, characterized in that: A motor is located at the center of the bottom of the base. The motor's shaft is connected to a support frame. A slide rod is slidably mounted on the support frame, passing through the support frame and extending from one end of the support frame. A support bracket connected to the slide rod is mounted on the support frame, and the laser cladding assembly is mounted on the support bracket. A support plate is mounted on the housing of the laser cladding assembly, and two limiting plates are mounted at the bottom of the positioning frame at the corresponding end. The two limiting plates enclose a limiting groove, and the support plate is located within the limiting groove.

6. The laser cladding auxiliary tooling for improving accuracy according to claim 5, characterized in that: Both the limiting plate and the support plate are arc-shaped structures.

7. The laser cladding auxiliary tooling for improving accuracy according to claim 6, characterized in that: The support frame has a limit block elastically set inside by a spring, and the slide rod is provided with a limit groove that matches the limit block. When the limit block is located in the limit groove, the spring is in a compressed state.

8. The laser cladding auxiliary tooling for improving accuracy according to claim 7, characterized in that: The limiting blocks are symmetrically arranged at the upper and lower ends of the support frame.

9. The laser cladding auxiliary tooling for improving accuracy according to claim 8, characterized in that: The bottom of the limiting block is set as an arc-shaped structure, and the limiting groove is set as an arc-shaped groove that matches the limiting block.

10. The laser cladding auxiliary tooling for improving accuracy according to claim 3, characterized in that: One of the positioning frames has a receiving cavity on the side near the baffle, and the motor that drives the bidirectional lead screw is mounted on the baffle and is located in the receiving cavity in the initial state.

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