Engineering oil cylinder end face laser cladding device

Abstract

The utility model relates to the technical field of engineering oil cylinder cladding, and discloses an engineering oil cylinder end face laser cladding device which is characterized in that an adjusting disc and a plurality of arc-shaped grooves in the surface of the adjusting disc are arranged in a clamping seat, and when a servo motor drives the adjusting disc to rotate, the inner walls of the arc-shaped grooves generate radial thrust on a driving rod; the driving rod drives the I-shaped sliding block to slide along the sliding groove, then the multiple clamping plates synchronously move centripetally or centrifugally, uniform circumferential clamping force is formed, the clamping plates form symmetrically-distributed clamping force on the cylindrical surface oil cylinder pipe, the limitation that a traditional screw rod drives the clamping plates to only provide two-way opposite clamping force is avoided, and the clamping efficiency is improved. The uniform clamping force formed by the multiple clamping plates can effectively restrain the oil cylinder pipe from rotating deviation and radial shaking caused by thermal deformation or vibration, the accuracy of the cladding track is ensured, the thickness uniformity and bonding strength of a cladding layer are improved, meanwhile, the friction force between the anti-skid rubber pieces on the inner sides of the clamping plates and the surface of the oil cylinder pipe is increased, and the anti-skid effect is improved. And the clamping stability is further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder cladding technology, and in particular to a laser cladding device for the end face of an hydraulic cylinder. Background Technology

[0002] Laser cladding technology, as an advanced surface modification process, occupies an important position in the industrial field due to its unique technological advantages. This technology uses a high-energy laser beam to rapidly melt alloy powder onto the workpiece surface, forming a high-performance cladding layer that is metallurgically bonded to the substrate. This not only significantly improves the surface hardness, wear resistance, and corrosion resistance of the workpiece, but also, by precisely controlling the laser energy density and cladding trajectory, minimizes the heat-affected zone, allowing the thermal deformation of the hydraulic cylinder end face during the cladding process to be controlled at the micrometer level.

[0003] In existing laser cladding devices, the clamping and fixing of hydraulic cylinders usually adopts a screw-driven clamping plate structure. The screw-driven clamping plate can only provide bidirectional opposing clamping force. For cylindrical hydraulic cylinders, the clamping force is concentrated in the contact area between the clamping plate and the hydraulic cylinder, and cannot form a uniform circumferential constraint force. When thermal deformation or vibration occurs during the laser cladding process, the hydraulic cylinder is prone to rotational displacement around the axis or radial sway, causing the cladding trajectory to deviate from the preset position, resulting in defects such as uneven cladding layer thickness and poor bonding. Utility Model Content

[0004] To address the shortcomings of cylindrical hydraulic cylinders, which can only provide bidirectional opposing clamping force, resulting in the clamping force being concentrated in the contact area between the clamping plate and the cylinder and failing to form a uniform circumferential constraint force, and when thermal deformation or vibration occurs during laser cladding, the cylinder is prone to rotational displacement around its axis or radial sway, causing the cladding trajectory to deviate from the preset position, resulting in defects such as uneven cladding layer thickness and poor bonding, this utility model provides an engineering hydraulic cylinder end face laser cladding device with the advantages of uniform clamping, high stability, and a detachable and replaceable laser head, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a laser cladding device for the end face of an engineering hydraulic cylinder, comprising a base, a clamping seat installed at the upper end of the base, a motor box fixedly installed at the bottom inner side of the clamping seat, a servo motor installed inside the motor box, an adjusting plate installed at the upper end of the motor box, the output end of the servo motor connected to the bottom of the adjusting plate via a coupling, four arc-shaped grooves evenly opened on the surface of the adjusting plate, multiple sliding grooves opened at the upper end of the clamping seat, a hydraulic cylinder tube provided in the middle of the adjusting plate, multiple clamping plates provided at the outer ring position of the bottom of the hydraulic cylinder tube, an I-shaped slider fixedly installed at the bottom of each of the clamping plates, the middle of the I-shaped slider slidably installed inside the sliding groove, a drive rod fixedly installed at the bottom of each of the I-shaped sliders, multiple drive rods slidably installed inside the arc-shaped grooves respectively, and multiple anti-slip rubber sheets fixedly installed on the inner surface of the clamping plates.

[0006] Preferably, a rotary motor is installed at the bottom of the base, and the output end of the rotary motor is connected to the bottom of the clamp via a coupling.

[0007] By using a rotary motor, the clamp is driven to rotate the cylinder tube, achieving annular cladding on the end face and improving cladding efficiency and uniformity.

[0008] Preferably, a vertical plate is fixedly installed on the upper end of the base, a hydraulic cylinder is installed on the upper end of the vertical plate, a mounting bracket is fixedly installed on the bottom of the hydraulic cylinder through a piston rod, and a laser head is provided at the bottom of the mounting bracket.

[0009] By using a hydraulic cylinder, the mounting bracket is driven to move the laser head vertically, precisely adjusting the distance between it and the end face of the cylinder tube to ensure the quality of the cladding.

[0010] Preferably, the mounting bracket has a groove on its inner side, a bidirectional lead screw is rotatably mounted inside the groove, movable blocks are threaded on both sides of the bidirectional lead screw, and a drive motor is mounted on one side of the bottom of the mounting bracket.

[0011] By using a bidirectional lead screw, the movable block is driven to move the insertion rod synchronously, enabling rapid disassembly and precise positioning of the laser head and improving replacement efficiency.

[0012] Preferably, the output end of the drive motor is connected to the side of the bidirectional lead screw via a coupling, and the inner side of each movable block is fixedly equipped with a plug rod.

[0013] The insertion rod, in conjunction with the laser head positioning hole, enables quick positioning and installation, ensuring the laser head is stable and facilitating the replacement of laser heads of different specifications.

[0014] Preferably, positioning holes are provided on both sides of the upper end of the laser head, and the diameter of the positioning holes is the same as that of the insertion rod, and the insertion rod is inserted and installed inside the positioning holes.

[0015] The positioning holes, combined with the insertion rod, enable rapid positioning of the laser head, ensuring installation accuracy and facilitating efficient replacement of laser heads of different specifications.

[0016] This utility model has the following advantages:

[0017] 1. By setting an adjustment plate inside the clamping seat and multiple arc-shaped grooves on its surface, when the servo motor drives the adjustment plate to rotate, the inner wall of the arc-shaped groove generates a radial thrust on the drive rod, causing the drive rod to drive the I-shaped slider to slide along the groove. This causes multiple clamping plates to move synchronously centripetally or centrifugally, forming a uniform circumferential clamping force. This allows the clamping plates to form a symmetrically distributed clamping force on the cylindrical cylinder tube, avoiding the limitation of traditional screw-driven clamping plates that can only provide bidirectional opposing clamping force. The uniform clamping force formed by multiple clamping plates can effectively suppress the rotational offset and radial sway of the cylinder tube caused by thermal deformation or vibration, ensuring the accuracy of the cladding trajectory, improving the uniformity of the cladding layer thickness and the bonding strength. At the same time, the anti-slip rubber on the inner side of the clamping plate increases the friction with the surface of the cylinder tube, further enhancing the clamping stability.

[0018] 2. By installing a bidirectional lead screw in the groove at the bottom of the mounting bracket, when the drive motor drives the bidirectional lead screw to rotate, the movable block moves in opposite directions along the inner wall of the groove, causing the insertion rod fixed inside the movable block to move closer or further away synchronously. When replacing the laser head, the drive motor reverses to make the insertion rod exit from the positioning hole at the upper end of the laser head, releasing the positioning constraint on the laser head, allowing for quick disassembly of the old laser head. When installing the new laser head, align its positioning hole with the insertion rod, and the drive motor rotates forward to make the insertion rod accurately insert into the positioning hole. Through the transmission characteristics of the bidirectional lead screw, the insertion rod forms a bidirectional synchronous clamping and positioning force on the laser head, avoiding the installation deviation caused by single-point force in traditional fixing methods. This ensures that the axis of the laser head is precisely aligned with the cladding trajectory after installation. At the same time, disassembly and installation can be completed without additional tools, significantly improving the efficiency of laser head replacement and meeting the needs of different cladding processes for rapid switching of laser head specifications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall front-end cross-sectional structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the adjustment disc of this utility model;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the upper end of the clamp of this utility model;

[0023] Figure 5 This is a schematic diagram of the disassembled bottom structure of the mounting bracket of this utility model.

[0024] In the diagram: 1. Base; 2. Clamp; 3. Rotary motor; 4. Hydraulic cylinder tube; 5. Motor box; 6. Servo motor; 7. Adjustment plate; 8. Arc groove; 9. Slide groove; 10. Clamping plate; 11. Anti-slip film; 12. I-shaped slider; 13. Drive rod; 14. Vertical plate; 15. Hydraulic cylinder; 16. Mounting bracket; 17. Groove; 18. Two-way lead screw; 19. Drive motor; 20. Laser head; 21. Positioning hole; 22. Movable block; 23. Insert rod. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-4 A laser cladding device for the end face of an engineering hydraulic cylinder includes a base 1, a clamping seat 2 installed on the upper end of the base 1, a motor box 5 fixedly installed on the inner bottom of the clamping seat 2, a servo motor 6 installed inside the motor box 5, the servo motor 6 having a self-locking effect, so that the clamping plate 10 is stable after clamping and positioning and the cladding accuracy of the hydraulic cylinder tube 4 is ensured, an adjusting plate 7 is installed on the upper end of the motor box 5, the output end of the servo motor 6 is connected to the bottom of the adjusting plate 7 through a coupling, four arc-shaped grooves 8 are evenly opened on the surface of the adjusting plate 7, the adjusting plate 7 and the multiple arc-shaped grooves 8 on its surface are set inside the clamping seat 2, and the servo motor 6 drives the adjusting plate 7 to rotate.

[0027] The upper end of the clamping base 2 is provided with multiple sliding grooves 9. The middle part of the adjusting plate 7 is provided with a hydraulic cylinder tube 4. Multiple clamping plates 10 are provided at the outer ring of the bottom of the hydraulic cylinder tube 4. I-shaped sliders 12 are fixedly installed at the bottom of each clamping plate 10. The middle part of the I-shaped sliders 12 is slidably installed inside the sliding groove 9. The bottom of each I-shaped slider 12 is fixedly installed with a drive rod 13. Multiple drive rods 13 are slidably installed inside the arc-shaped groove 8. When the adjusting plate 7 rotates, the inner wall of the arc-shaped groove 8 generates a radial thrust on the drive rods 13, causing the drive rods 13 to drive the I-shaped sliders 12 to slide along the sliding groove 9, thereby causing the multiple clamping plates 10 to move synchronously in a centripetal or centrifugal direction. This creates a uniform circumferential clamping force, allowing the clamping plates 10 to form a symmetrically distributed clamping force on the cylindrical cylinder tube 4. This avoids the limitation of traditional screw-driven clamping plates 10, which can only provide bidirectional opposing clamping force. The uniform clamping force formed by multiple clamping plates 10 can effectively suppress the rotational offset and radial sway of the cylinder tube 4 caused by thermal deformation or vibration, ensuring the accuracy of the cladding trajectory and improving the uniformity of the cladding layer thickness and bonding strength. Multiple anti-slip rubber sheets 11 are fixedly installed on the inner surface of the clamping plates 10. At the same time, the anti-slip rubber sheets 11 on the inner side of the clamping plates 10 increase the friction with the surface of the cylinder tube 4, further enhancing the clamping stability.

[0028] Please see Figures 2-5 A rotary motor 3 is installed at the bottom of the base 1. The output end of the rotary motor 3 is connected to the bottom of the clamp 2 via a coupling. The rotary motor 3 drives the clamp 2 to rotate the cylinder tube 4, so that the laser head 20 can perform annular cladding on the end face of the cylinder tube 4, achieving uniform coverage of the cladding trajectory, improving cladding efficiency and interlayer uniformity. A vertical plate 14 is fixedly installed at the upper end of the base 1. A hydraulic cylinder 15 is installed at the upper end of the vertical plate 14. A mounting frame 16 is fixedly installed at the bottom of the hydraulic cylinder 15 via a piston rod. The laser head 20 is located at the bottom of the mounting frame 16. The piston rod of the hydraulic cylinder 15 drives the mounting frame 16 to move up and down, thereby driving the laser head 20 closer to or away from the end face of the cylinder tube 4. This allows for flexible and precise adjustment of the distance between the laser head 20 and the end face of the cylinder tube 4 when facing cylinder tubes of different specifications, ensuring that the laser beam irradiates the end face with a suitable energy density, improving the quality and effect of cladding, and also enhancing the adaptability of the equipment to different workpieces.

[0029] The mounting bracket 16 has a groove 17 on its inner side. A double-acting screw 18 is rotatably mounted inside the groove 17. Movable blocks 22 are threaded on both sides of the double-acting screw 18. When the double-acting screw 18 is installed in the groove 17 at the bottom of the mounting bracket 16, the movable blocks 22 move towards or away from each other along the inner wall of the groove 17 when the drive motor 19 drives the double-acting screw 18 to rotate. This causes the insert rod 23 fixed inside the movable block 22 to move closer or further away synchronously. The drive motor 19 is installed on one side of the bottom of the mounting bracket 16. The output end of the drive motor 19 is connected to the side of the double-acting screw 18 through a coupling.

[0030] The inner side of the movable block 22 is fixedly installed with a plug rod 23. The upper end of the laser head 20 is provided with positioning holes 21 on both sides. The diameter of the positioning holes 21 is the same as that of the plug rod 23, and the plug rod 23 is inserted into the inner side of the positioning holes 21. When replacing the laser head 20, the drive motor 19 reverses to make the plug rod 23 exit from the positioning hole 21 at the upper end of the laser head 20, releasing the positioning constraint on the laser head 20, so that the old laser head 20 can be quickly disassembled. When installing the new laser head 20, its positioning hole 21 is aligned with the plug rod 23, and the drive motor 19 rotates forward to make the plug rod 23 accurately insert into the positioning hole 21. Through the transmission characteristics of the bidirectional lead screw 18, the plug rod 23 forms a bidirectional synchronous clamping and positioning force on the laser head 20, avoiding the installation deviation caused by single-point force in the traditional fixing method. This ensures that the axis of the laser head 20 is accurately aligned with the cladding trajectory after installation. At the same time, disassembly and installation can be completed without additional tools, which significantly improves the replacement efficiency of the laser head 20 and meets the needs of different cladding processes for rapid switching of laser head 20 specifications.

[0031] Working principle: In actual use, first place the cylinder tube 4 in the middle of the clamp 2, start the servo motor 6 in the motor box 5, the servo motor 6 drives the adjustment plate 7 to rotate through the coupling, and the four arc grooves 8 on the surface of the adjustment plate 7 rotate accordingly. Since the lower end of the drive rod 13 slides into the arc groove 8, the rotation trajectory of the arc groove 8 will generate a radial thrust on the drive rod 13, so that the drive rod 13 drives the bottom I-shaped slider 12 to slide synchronously along the slide groove 9 at the upper end of the clamp 2, thereby pushing multiple clamping plates 10 to move towards the center until the anti-slip rubber sheet 11 on the inner side of the clamping plate 10 is tightly attached to the outer wall of the cylinder tube 4. At this time, the four clamping plates 10 form a uniform circumferential clamping force guided by the trajectory of the arc groove 8, and stably fix the cylinder tube 4.

[0032] Next, according to the requirements of the cladding process, the rotary motor 3 at the bottom of the base 1 is started. The rotary motor 3 drives the clamp 2 and the cylinder tube 4 to rotate at a constant speed around the axis through the coupling, so that the end face of the cylinder tube 4 enters the laser cladding area. At the same time, the hydraulic cylinder 15 at the top of the vertical plate 14 drives the mounting bracket 16 to move in the vertical direction through the piston rod, and adjusts the distance between the laser head 20 and the end face of the cylinder tube 4 to the preset position to ensure that the laser beam energy density meets the process requirements.

[0033] When the laser head 20 needs to be replaced, start the drive motor 19 at the bottom of the mounting bracket 16. The drive motor 19 drives the bidirectional lead screw 18 to rotate through the coupling. Since the threads on both sides of the bidirectional lead screw 18 rotate in opposite directions, the rotation will cause the two movable blocks 22 to move towards each other along the inner wall of the groove 17. The insertion rod 23 fixed inside the movable block 22 moves away synchronously and exits from the positioning hole 21 at the top of the laser head 20, releasing the positioning constraint on the laser head 20. At this time, the old laser head 20 can be quickly disassembled and the new laser head 20 can be installed. After aligning the positioning hole 21 of the new laser head 20 with the insertion rod 23, start the drive motor 19 in reverse. The bidirectional lead screw 18 drives the movable blocks 22 to move towards each other, and the insertion rod 23 is accurately inserted into the positioning hole 21, completing the quick replacement and positioning of the laser head 20.

[0034] Throughout the cladding process, the rotary motor 3 continuously drives the cylinder tube 4 to rotate, and the laser head 20 performs circumferential cladding on the end face. The uniform clamping force and precise rotation control ensure a stable cladding trajectory, and thermal deformation and vibration are effectively suppressed, thereby achieving a high-quality processing effect with uniform cladding layer thickness and strong bonding.

Claims

1. A laser cladding device for the end face of an engineering hydraulic cylinder, comprising a base (1), characterized in that: A clamp (2) is installed on the upper end of the base (1). A motor box (5) is fixedly installed on the bottom inner side of the clamp (2). A servo motor (6) is installed inside the motor box (5). An adjustment plate (7) is installed on the upper end of the motor box (5). The output end of the servo motor (6) is connected to the bottom of the adjustment plate (7) through a coupling. Four arc-shaped grooves (8) are evenly opened on the surface of the adjustment plate (7). Multiple sliding grooves (9) are opened on the upper end of the clamp (2). The middle of the adjustment plate (7) The unit is provided with a cylinder tube (4), and a plurality of clamps (10) are provided at the outer ring of the bottom of the cylinder tube (4). I-shaped sliders (12) are fixedly installed at the bottom of the plurality of clamps (10). The middle part of the I-shaped sliders (12) is slidably installed inside the slide groove (9). A drive rod (13) is fixedly installed at the bottom of the I-shaped sliders (12). The plurality of drive rods (13) are slidably installed inside the arc groove (8). A plurality of anti-slip rubber sheets (11) are fixedly installed on the inner surface of the clamps (10).

2. The laser cladding device for the end face of an engineering hydraulic cylinder according to claim 1, characterized in that: A rotary motor (3) is installed at the bottom of the base (1), and the output end of the rotary motor (3) is connected to the bottom of the clamp (2) via a coupling.

3. The laser cladding device for the end face of an engineering hydraulic cylinder according to claim 1, characterized in that: A vertical plate (14) is fixedly installed on the upper end of the base (1), and a hydraulic cylinder (15) is installed on the upper end of the vertical plate (14). A mounting bracket (16) is fixedly installed on the bottom of the hydraulic cylinder (15) through a piston rod. A laser head (20) is provided at the bottom of the mounting bracket (16).

4. The laser cladding device for the end face of an engineering hydraulic cylinder according to claim 3, characterized in that: The mounting bracket (16) has a groove (17) on its inner side. A two-way lead screw (18) is rotatably mounted inside the groove (17). Movable blocks (22) are threaded on both sides of the two-way lead screw (18). A drive motor (19) is mounted on one side of the bottom of the mounting bracket (16).

5. The laser cladding device for the end face of an engineering hydraulic cylinder according to claim 4, characterized in that: The output end of the drive motor (19) is connected to the side of the double-acting lead screw (18) via a coupling, and the inner side of the movable block (22) is fixedly equipped with a plug rod (23).

6. The laser cladding device for the end face of an engineering hydraulic cylinder according to claim 5, characterized in that: The upper end of the laser head (20) is provided with positioning holes (21) on both sides. The diameter of the positioning holes (21) is the same as that of the insertion rod (23), and the insertion rod (23) is inserted and installed inside the positioning holes (21).

Images