Intelligent laser cladding welding device for drilling tool machining

Abstract

The invention relates to the field of intelligent laser welding, in particular to an intelligent laser cladding welding device for drilling tool machining, which comprises a welding robot and a workbench, the welding robot is arranged on one side of the workbench, and a laser welding device is mounted on the welding robot; the device further comprises a connection device. The connection device is arranged below the workbench and used for grabbing a drilling tool and driving the drilling tool to move. The connecting device comprises a grabbing assembly used for clamping a drilling tool and a moving guide device used for driving the grabbing assembly to move in the vertical direction and the horizontal direction. The moving guide device comprises a support, a movable rod and a sliding rail, wherein the movable rod and the sliding rail are installed on the support. The slide rail comprises a first slide way and a second slide way, the first slide way is vertically arranged below the rotary table, and the second slide way is horizontally arranged on one side of the first slide way; a sliding column is arranged on the movable rod, can slide in a sliding groove of the sliding rail and drives the grabbing assembly to move in different directions. The drilling tool welding device has the effect of improving the drilling tool welding efficiency.

Description

Technical Field

[0001] This application relates to the technical field of intelligent laser welding, and in particular to an intelligent laser cladding welding device for drilling tool processing. Background Technology

[0002] Drilling tools are critical consumables in oil and gas exploration, geological drilling, and engineering drilling, and their performance directly affects drilling efficiency and service life. During long-term service, drilling tools are susceptible to wear, fatigue spalling, erosion, and microcracks due to complex operating conditions such as high temperature, high pressure, strong impact, and strong friction. This leads to decreased strength, structural deformation, and even premature failure. Traditional repair or strengthening methods mainly include welding, spraying, and thermal spraying. However, these methods generally suffer from low coating bonding strength, high dilution rate, large heat-affected zone, and poor repair accuracy, making it difficult to meet the remanufacturing and surface strengthening requirements of high-performance drilling tools.

[0003] In recent years, laser cladding technology, as a novel surface strengthening and remanufacturing process, utilizes a high-energy-density laser beam as a heat source to rapidly melt alloy powder or wire and form a metallurgical bonding layer with the base metal, thereby obtaining a cladding layer with high density, low dilution rate, and refined microstructure. This technology offers advantages such as concentrated energy, controllable heat input, minimal deformation, and stable process, and is applied to the surface strengthening treatment of wear-resistant, corrosion-resistant, and heat-resistant parts. Simultaneously, with the development of electronic information technology, the automation level of laser cladding welding equipment has gradually increased. For example, patent document CN120772663A discloses a laser welding device for a frame, which mainly includes a welding robot and an operating table. The welding robot is a multi-degree-of-freedom robotic arm with a welding device body (laser welding device) at its end. The robot drives the welding device body to move, thereby welding the workpiece on the operating table.

[0004] The welding equipment in related technologies is applicable to most planar components, while drill bits are mostly rotary components. Directly using the operating table in these technologies makes it difficult to effectively secure the drill bits. Therefore, specialized clamping fixtures for rotary parts, such as three-jaw chucks, are typically installed on the operating table. Changing the clamps improves the stability of the drill bit welding process; however, the loading and unloading of drill bits are still done manually, making assembly line production difficult. Therefore, the automation level of the welding equipment in these technologies needs further improvement to enhance the efficiency of drill bit welding. Summary of the Invention

[0005] In order to improve the automation level of laser cladding welding equipment and further improve the efficiency of drilling tool processing, this application provides an intelligent laser cladding welding equipment for drilling tool processing.

[0006] The intelligent laser cladding welding device for drilling tool processing provided in this application adopts the following technical solution: A smart laser cladding welding device for drilling tool processing includes a welding robot and a worktable. The welding robot is disposed on one side of the worktable, and a laser welding device is installed on the welding robot. The device is characterized by further including a connecting device. The connecting device is disposed below the worktable and is used to grasp the drilling tool and drive its movement. The connecting device includes a grasping component for gripping the drilling tool and a moving guide device for driving the grasping component to move vertically and horizontally. The moving guide device includes a support and a movable rod and a slide rail mounted on the support. The slide rail includes a first slide rail and a second slide rail. The first slide rail is vertically disposed below the rotary table, and the second slide rail is horizontally disposed on one side of the first slide rail. A sliding column is disposed on the movable rod, which can slide in the groove of the slide rail and drive the grasping component to move in different directions.

[0007] By adopting the above technical solution, and by setting up a welding robot, a worktable, and a connecting device below it, automated loading, unloading, and positioning of the drill bit during laser cladding welding is achieved. During processing, the gripping component grabs the workpiece, and then controls the sliding column on the movable rod to move in the first or second slide rail, thereby driving the gripping component closer to or away from the rotary table, realizing automated loading and unloading operations, improving the overall automation level of the welding system, and increasing the efficiency of drill bit welding.

[0008] Meanwhile, the docking device in this application uses a sliding rail to achieve the movement of the gripping component in different directions. Compared with the docking method using a robot, the docking method in this application has a simpler structure, lower production cost, and is more suitable for actual production, effectively reducing the manufacturer's R&D costs. Furthermore, due to the simple structure of the docking device in this application, its maintenance cost is also lower in assembly line production activities, reducing maintenance time and improving production efficiency.

[0009] Optionally, a connecting hole is provided on the side of the first slide rail near the second slide rail, and a switching plate is rotatably installed in the connecting hole; rotating the switching plate can block the connecting hole or divide the slide groove provided on the first slide rail; when the switching plate divides the slide groove on the first slide rail, it forms a guide groove located above the switching plate and a common groove located below the switching plate. In this state, the switching plate is connected to the second slide rail, so that the common groove is connected to the slide groove on the second slide rail.

[0010] By adopting the above technical solution, in this embodiment, the switching plate exists in two states. First, the switching plate blocks the connecting hole, disconnecting the connection between the first and second slide rails. In this case, the sliding column can only move within the groove on the first slide rail, meaning the movable rod moves linearly, allowing it to approach or move away from the rotary table. Second, the switching plate rotates, dividing the groove on the first slide rail into two parts (i.e., the guide groove and the common groove). Simultaneously, in this state, the connecting hole opens, and the common groove connects with the groove on the second slide rail, allowing the sliding column to enter the groove on the second slide rail, enabling the gripping component to move horizontally. Rotating the switching plate completes track connection and disconnection, improving the switching response speed. This solution allows the gripping component to smoothly switch between loading / unloading and welding stations, effectively improving production cycle time and equipment reliability, while reducing maintenance costs.

[0011] Optionally, the support is provided with a driving component, which is used to drive the end of the movable rod away from the gripping assembly to move linearly along the length direction of the first slide.

[0012] By adopting the above technical solution, the sliding column has a cylindrical structure. A linear drive component pulls or pushes one end of the movable rod, causing the movable rod to move. This movement has two states: First, the sliding column is located in the groove on the second slide rail. In this state, pulling one end of the movable rod causes it to receive a downward vertical force. As the movable rod rotates, the sliding column moves towards the first slide rail, thus entering the common groove. Second, after the sliding column enters the common groove, the switching plate rotates to block the connecting hole. Pushing or pulling the end of the movable rod then drives its linear movement. The linear drive component allows for changes in the moving direction of the gripping component, as well as changes in the gripping direction, enabling multi-angle changes in the workpiece and facilitating workpiece loading and unloading operations.

[0013] Optionally, the support is provided with a linkage assembly for transmitting power between the driving component and the switching plate. The linkage assembly includes a rotating disk, a connecting rod, a rack, and a gear. The rack is fixedly connected to the switching plate, meshes with the gear, and can slide relative to the support. The rotating disk can rotate relative to the support. The two ends of the connecting rod are rotatably connected to the rotating disk and the rack, respectively. The rotation of the rotating disk can drive the rack to reciprocate. The linkage assembly also includes a one-way drive assembly connected to the driving component for driving the rotating disk to rotate in one direction.

[0014] By adopting the above technical solution, the rotating disk, connecting rod, and rack form a crank-connecting rod structure, and the rotation of the rotating disk can drive the rack to reciprocate. Since the switching plate and the movable rod share a driving component, and the movable rod is driven to reciprocate, a unidirectional driving component is set here so that the linear driving component can drive the rotating disk to rotate in one direction.

[0015] Optionally, the unidirectional drive assembly includes a sliding block and a rotating rod. The sliding block is slidably connected to the first slide along the length of the first slide. The rotating rod is mounted on the sliding block and located above the rotating disk. A lever is provided on the rotating disk. When the sliding block moves downward, the rotating rod can move the lever. The end of the rotating rod near the rotating disk can rotate towards the ground.

[0016] By adopting the above technical solution, the sliding block drives the rotating rod to move, which in turn can move the lever to drive the rotating disk to rotate, thus achieving the driving of the rotating disk. At the same time, during the process of the sliding block resetting, since the end of the rotating rod near the rotating disk can rotate in the direction closer to the ground, it can automatically avoid causing the rotating disk to flip.

[0017] Optionally, the worktable includes a support, a rotary table, and a three-jaw chuck. The rotary table is rotatably connected to the support, and the three-jaw chuck is mounted on the rotary table, with multiple chucks arranged around the rotation axis of the rotary table.

[0018] By adopting the above technical solution, the worktable is mainly used to clamp the workpiece. The design of multiple three-jaw chucks enables the welding system to load and unload materials simultaneously during the welding process, thereby improving production efficiency and facilitating assembly line production.

[0019] Optionally, the unidirectional drive assembly further includes a tension spring for maintaining the tendency of the slider to slide away from the ground.

[0020] By adopting the above technical solution, the sliding block can be reset by the tension spring, making it easy to rotate the rotating disk again.

[0021] Optionally, a limiting component is provided on the first slide rail at the position corresponding to the rotating disk. The limiting component includes a first cylinder coaxially fixed on the rotating disk and a second cylinder slidably connected on the first slide rail. Two limiting protrusions are evenly spaced around the second cylinder's own axis. A limiting groove is provided on the first cylinder, and the limiting protrusions are embedded in the limiting groove. An inclined surface is provided on the limiting protrusions. An elastic element is provided on the first slide rail to keep the second cylinder moving towards the first cylinder. When the rotating disk rotates, the inclined surface can drive the second cylinder away from the first cylinder.

[0022] By adopting the above technical solution, the cooperation between the limiting protrusion and the limiting groove can limit the rotation of the rotating disk to a certain extent, thereby making the rotating disk more stable. At the same time, the setting of the limiting protrusion and the limiting groove also allows the rotating disk to have sufficient resistance so that it is not affected by the rotating rod during the sliding block reset process.

[0023] Optionally, the inclined surface is provided as two, and the two inclined surfaces are respectively provided on the two sides of the limiting protrusion parallel to the axis of the second cylinder, and the two inclined surfaces are inclined in a direction that approaches each other on the side away from the second cylinder.

[0024] By adopting the above technical solution, during the rotation of the turntable, after the lever moves the turntable to rotate a certain distance, the inclined surface on the limiting protrusion can abut against the limiting groove, and then the turntable can rotate automatically under the action of the elastic element, so that the lever does not need to deliberately move the turntable 180°.

[0025] Optionally, the slide rails are configured in two sets, with the two sets of slide rails respectively located on both sides of the movable rod.

[0026] In summary, this application includes the following beneficial technical effects: the connecting device and multiple three-jaw chucks enable automatic loading and unloading operations during the laser welding process of the drill bit, speeding up the production cycle, improving production efficiency, and facilitating assembly line production. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the overall structure of the connection device according to an embodiment of this application.

[0029] Figure 3 This is a structural schematic diagram of the connecting device according to an embodiment of this application from a first angle.

[0030] Figure 4 This is a schematic diagram of the structure of the mobile guidance device according to an embodiment of this application.

[0031] Figure 5 This is a structural schematic diagram of the connecting device according to an embodiment of this application from a second angle.

[0032] Figure 6 This is an embodiment of the present application. Figure 5 Enlarged view of part A in the middle.

[0033] Figure 7 This is a schematic diagram of the structure of a unidirectional drive component according to an embodiment of this application.

[0034] Figure 8 This is a schematic diagram of the structure of the limiting component according to an embodiment of this application.

[0035] Figure 9 This is a schematic diagram of the internal structure of the limiting component in an embodiment of this application.

[0036] Reference numerals: 1. Welding robot; 2. Workbench; 21. Support; 22. Rotary table; 23. Three-jaw chuck; 3. Connecting device; 31. Gripping assembly; 32. Moving guide device; 321. Support; 322. Movable rod; 323. Slide rail; 3231. First slide rail; 3232. Second slide rail; 3233. Limiting plate; 3234. Upper plate; 3235. Lower plate; 3236. Near plate; 3237. Far plate; 3238. Guide groove; 3239. Common groove; 324. Sliding column; 325. Driving component; 32 6. Transition plate; 327. Switching plate; 4. Linkage assembly; 41. Gear; 42. Rack; 43. Rotating disk; 44. Connecting rod; 45. One-way drive assembly; 451. Sliding block; 452. Avoiding block; 453. Rotating rod; 454. Toggle lever; 455. Blocking block; 456. Torsion spring; 457. Tension spring; 458. Retaining ring; 459. Extension block; 5. Conveyor belt device; 6. Limiting assembly; 61. Circular sleeve; 611. First sleeve; 612. Second sleeve; 62. Limiting protrusion; 63. Limiting groove; 64. Inclined surface. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0038] This application discloses an intelligent laser cladding welding device for drilling tool processing.

[0039] Reference Figure 1 and Figure 2 An intelligent laser cladding welding device for drilling tool processing includes a welding robot 1, a worktable 2, and a connecting device 3. The welding robot 1 is located on one side of the worktable 2 and is equipped with a laser welding device for cladding welding. The worktable 2 is used to clamp the drilling tool, and the connecting device 3 is located below the worktable 2 to grip the workpiece (in this embodiment, the drilling tool) and move it. During the welding process, the welding robot 1 drives the welding device to move and complete the welding. After welding, the connecting device 3 grips the workpiece on the worktable 2 and moves it to unload it. During the loading process, the connecting device 3 can also grip the workpiece in the loading area and then move it closer to the worktable 2 to load it.

[0040] In this embodiment, welding robot 1 is the FANUC M-20iB / 25 industrial robot from FANUC Corporation of Japan (the M-20iB / 25C clean version or other load classes in the same series are also optional). It is a 6-axis articulated robot with a maximum load capacity of 25 kg, a maximum working radius (reach) of approximately 1853 mm, and a repeatability of ±0.02 mm. The laser welding device is a YLS series fiber laser from IPG Photonics Corporation of the United States. This series of lasers can output power ranging from several kilowatts to tens of kilowatts (e.g., 1 kW to 100 kW models are available, with a wavelength of 1070 nm, supporting continuous wave or modulated operation (up to several kHz frequency modulation). In welding / cladding mode, the output range of 2–6 kW is selectable, the typical spot diameter can be adjusted from 0.6–2.0 mm, and the cladding speed can be in the range of 200–600 mm / min (the specific speed is determined according to the material, powder, powder feed rate, workpiece thermal conductivity, etc.).

[0041] Reference Figure 1 and Figure 2 The worktable 2 includes a support 21, a rotary table 22, and a three-jaw chuck 23. The support 21 includes two legs and a crossbeam. The two ends of the crossbeam are fixedly connected to the two legs by screws or welding, forming a "gate"-shaped structure. Two cantilever arms are also arranged parallel to each other at both ends of the crossbeam. The rotary table 22 is positioned between the two cantilever arms and has a square block structure. The two sides of the rotary table 22 are rotatably connected to the sides of the two cantilever arms that are close to each other. The rotation axis of the rotary table 22 is parallel to the ground. The three-jaw chuck 23 is rotatably connected to the rotary table 22 around its own axis, and the axis of the three-jaw chuck 23 is perpendicular to the axis of the rotary table. Under the action of the three-jaw chuck 23 and the rotary table 22, the workpiece can be driven to rotate around multiple different axes, which facilitates welding on different complex curved surfaces on the drilling tool.

[0042] Multiple three-jaw chucks 23 are evenly spaced along the rotation axis of the rotary table 22, so that the welding system can perform cyclic welding on multiple workpieces, thereby improving welding efficiency.

[0043] Reference Figure 2 and Figure 3 The connecting device 3 includes a gripping component 31 and a moving guide device 32. The gripping component 31 is used to grip the workpiece. The gripping component 31 is slidably connected to the moving guide device 32, which is used to drive the gripping component 31 to move in different directions. In this embodiment, the workpiece preparation area (not shown in the figure) for holding the workpiece is horizontally arranged on one side of the connecting device 3, and the connecting device 3 is arranged below the rotary table 22. Therefore, the moving guide device 32 is used to guide the gripping component 31 to approach the rotary table 22 in a vertically upward direction and to approach the workpiece preparation area in a horizontal direction.

[0044] Reference Figure 2 and Figure 3 The moving guide device 32 includes a support 321, a movable rod 322 and a slide rail 323 mounted on the support 321. The slide rail 323 includes a first slide rail 3231 and a second slide rail 3232. The first slide rail 3231 includes two parallel and spaced limiting plates 3233, forming a groove between the two limiting plates 3233. The first slide rail 3231 is vertically positioned and located directly below the rotary table 22. A sliding column 324 is provided on the movable rod 322. One end of the sliding column 324 is inserted into the groove. The groove width can be designed to be 12mm, and the diameter of the sliding column can be designed to be 11.8mm. The clearance is controlled to be ≤0.2mm to ensure the stability of the sliding column sliding in the groove. Under the action of the groove, the movable rod 322 can slide along the length direction of the first slide rail 3231. A gripping component 31 is mounted on one end of the movable rod 322. Sliding the movable rod 322 can drive the gripping component 31 to move in the vertical direction. During the loading process, the rotary table 22 can be controlled to rotate, so that the three-jaw chuck 23 faces the movable rod 322, thereby realizing the loading and unloading of the workpiece.

[0045] Reference Figure 2 and Figure 3 The second slide rail 3232 is horizontally positioned and has the same structure as the first slide rail 3231, both including two parallel and spaced-apart limiting plates 3233 located on one side of the first slide rail 3231. A connecting hole is provided on the limiting plate 3233 of the first slide rail 3231 near the second slide rail 3232, dividing the limiting plate 3233 into two segments. A transition plate 326 is provided between the second slide rail 3232 and the first slide rail 3231. For ease of description, the limiting plate 3233 of the second slide rail 3232 near the ground is defined as the lower plate 3235, and the limiting plate 3233 away from the ground is defined as the upper plate 3234; the limiting plate 3233 of the first slide rail 3231 near the second slide rail 3232 is defined as the near plate 3236, and the limiting plate 3233 of the first slide rail 3231 away from the second slide rail 3232 is defined as the far plate 3237. A transition plate 326 is provided between the lower plate 3235 and the near plate 3236. The two ends of the transition plate 326 are welded to the lower plate 3235 and the near plate 3236, respectively. A switching plate 327 is provided in the connecting hole. The two ends of the switching plate 327 abut against the end of the upper plate 3234 and the side of the far plate 3237 near the second slide rail 3232, respectively. When the two ends of the switching plate 327 abut against the end of the upper plate 3234 and the side of the far plate 3237 near the second slide rail 3232, they are parallel to the transition plate 326, and there is communication between the lower end of the first slide rail 3231 and the second slide rail 3232.

[0046] The rotation axis of the switching plate 327 is located on the trajectory line along the length of the near plate 3236, and at the same time, the rotation axis of the switching plate 327 is located at the middle position along the length of the switching plate 327. Therefore, rotating the switching plate 327 can block the connecting hole and make the switching plate 327 flush with the near plate 3236, thus disconnecting the connection between the first slide rail 3231 and the second slide rail 3232.

[0047] Reference Figure 2 and Figure 3 With the first slide rail 3231 and the second slide rail 3232 connected, the switching plate 327 divides the groove on the first slide rail 3231 into two sections: a common groove 3239 located below the switching plate 327 and a guide groove 3238 located above the switching plate 327. In this state, the sliding column 324 on the movable rod 322 can slide in the groove of the second slide rail 3232 and the common groove 3239. In one embodiment, the length of the second slide rail 3232 can be set to 400mm, and the length of the first slide rail 3231 can be set to 1200mm; the lengths of the first slide rail 3231 and the second slide rail 3232 can be adjusted by those skilled in the art based on experience and specific production environment, and there are no special requirements, which will not be described in detail here.

[0048] Reference Figure 2 and Figure 3 Applying a vertically downward pulling force to the end of the movable rod 322 away from the gripping component 31 causes the movable rod 322 to rotate, allowing the sliding column 324 to slide into the common groove 3239. Once the sliding column 324 is in the common groove 3239, it is in a vertical position. At this time, rotating the switching plate 327 blocks the connecting hole, disconnecting the connection between the common groove 3239 and the sliding groove on the second slide rail 3232. Simultaneously, the common groove 3239 connects with the guide groove 3238. The sliding column 324 can then slide within both the common groove 3239 and the guide groove 3238, causing the gripping component 31 to move vertically, approaching or moving away from the rotary table 22.

[0049] Reference Figure 2 and Figure 3 To improve the stability of the sliding of the movable rod 322, the slide rail 323 can be set in two sets, with the two sets of slide rail 323 respectively set on both sides of the movable rod 322. The sliding column 324 is set in two sets on both sides of the movable rod 322, corresponding to the slide rail 323, so that the slide rail 323 can guide and limit the movement on both sides of the movable rod 322.

[0050] Reference Figure 2 and Figure 3The moving guide device 32 also includes a drive component 325, which is used to move the movable rod 322. In this embodiment, the drive component 325 is an electric actuator, specifically the FD2 series electric actuator manufactured by Mingwei Machinery. This type of electric actuator is compatible with a 24V DC power supply. The piston rod can move at a speed of 6.5mm / s to 60mm / s. The electric actuator is vertically positioned below the first slide rail 3231. The cylinder of the electric actuator is fixed on the support 321. The piston rod of the electric actuator is rotatably connected to the end of the movable rod 322 away from the gripping assembly 31. The extension and retraction of the piston rod of the cylinder can apply a pulling or pushing force to the movable rod 322.

[0051] Reference Figure 3 and Figure 4 The support 321 is also equipped with a linkage component 4, which includes a gear 41 and a rack 42. The gear 41 is fixedly connected to the switching plate 327, and the rack 42 is slidably connected to the support 321 along the length of the first slide rail 3231. The sliding rack 42 can drive the gear 41 to rotate, thereby driving the switching plate 327 to rotate. The linkage component 4 also includes a rotating disk 43 and a connecting rod 44. The rotating disk 43 is rotatably connected to the support 321, and one end of the connecting rod 44 is rotatably connected to the rack 42, and the other end is rotatably connected to the rotating disk 43. The rotation axis between the connecting rod 44 and the rotating disk 43 is parallel to and spaced apart from the rotation axis of the rotating disk 43 itself. The rotating disk 43, the connecting rod 44, and the rack 42 form a crank-connecting rod structure. The rotation of the rotating disk 43 can drive the switching plate 327 to move back and forth, thereby changing the direction of movement of the rack 42.

[0052] Reference Figure 5 , Figure 6 and Figure 7 The linkage component 4 also includes a one-way drive component 45, which includes a sliding block 451, a clearance block 452, and a rotating rod 453. The sliding block 451 is slidably connected to the outer wall of the first slide rail 3231 in a direction parallel to the first slide rail 3231. In this embodiment, the first slide rail 3231 is fixedly connected to the support 321. Therefore, in other embodiments, the sliding block 451 can also be directly slidably connected to the support 321. The clearance block 452 is slidably connected to the sliding block 451 in a direction perpendicular to the first slide rail 3231 and perpendicular to the axis of the rotating disk 43. In one embodiment, the clearance block 452 can achieve a sliding engagement between the clearance block and the sliding block 451 through the cooperation of a wedge block and a dovetail groove. Of course, in other embodiments, a machine sliding engagement structure can be used.

[0053] Reference Figure 5 , Figure 6 and Figure 7An elastic element is provided on the sliding block 451. The elastic element is used to keep the avoidance block 452 sliding in a direction closer to the axis of the rotating disk 43. In this embodiment, the elastic element is set as a spring. One end of the spring is fixed on the avoidance block 452 and the other end is fixed on the sliding block 451, so that a force can be applied to the avoidance block 452, thereby making the avoidance block 452 maintain the tendency to move in a direction closer to the axis of the rotating disk 43.

[0054] Reference Figure 5 , Figure 6 and Figure 7 A rotating rod 453 is rotatably connected to a clearance block 452. The rotation axis of the rotating rod 453 is perpendicular to the first slide rail 3231 and perpendicular to the axis of the rotating disk 43. The rotating rod 453 is located on the side of the rotating disk 43 away from the ground. A lever 454 is arranged radially on the rotating disk 43. One end of the rotating rod 453 extends towards the lever 454 in a direction parallel to the axis of the rotating disk 43. A blocking block 455 is provided on the clearance block 452. The blocking block 455 is located on the side of the rotating disk 43 with the rotation axis of the rotating rod 453 perpendicular to the axis of rotation of the rotating rod 453, and is used to prevent the end of the rotating rod 453 corresponding to the lever 454 from rotating away from the rotating disk 43. Sliding the sliding block 451 causes it to move towards the rotating disk 43, and then the rotating rod 453 abuts against the lever 454, thereby actuating the rotating disk 43 and driving the rotating disk 43.

[0055] Reference Figure 5 , Figure 6 and Figure 7 Based on the structural principle of the crank-connecting rod structure, one rotation of the rotating disk 43 drives the rack 42 to reciprocate once. Therefore, half a rotation of the rotating disk 43 can drive the rack 42 to move linearly in one direction once. Thus, two levers 454 are configured around the rotation axis of the rotating disk 43. Moving the levers 454 twice will cause the rotating disk 43 to rotate one full turn, thereby switching the state of the switching plate 327. Simultaneously, during the rotation of the rotating disk 43, the abutment block 452 can slide, causing the rotating rod 453 to automatically avoid the rotating disk 43. The abutment block 452 also ensures effective contact and transmission between the rotating rod 453 and the lever 454, thus reliably driving the rotating disk 43 to rotate.

[0056] Reference Figure 5 , Figure 6 and Figure 7 The one-way drive assembly 45 also includes a torsion spring 456 and a tension spring 457. The torsion spring 456 is mounted on the abutment block 452 and is used to keep the rotating rod 453 rotating. One end of the tension spring 457 is fixedly connected to the first slide rail 3231 and the other end is fixedly connected to the sliding block 451, and is used to keep the sliding block 451 moving away from the ground.

[0057] Reference Figure 5 , Figure 6 and Figure 7 A retaining ring 458 is fixedly sleeved on the piston rod. In actual production, after the gripping assembly 31 grips the workpiece, the piston rod moves downward, simultaneously driving the retaining ring 458 to move closer to the sliding block 451. Since the sliding block 451 is located on the first slide rail 3231, an extension block 459 is integrally formed on the sliding block 451 to facilitate the movement of the retaining ring 458. A through hole is opened on the extension block 459, through which the piston rod of the electric push rod passes, so that the retaining ring 458 can more stably abut against the extension block 459, thereby driving the sliding block 451 to slide. When the retaining ring 458 on the piston rod abuts against the sliding block 451, it drives the lever 454 to move, thereby driving the rotating disk 43 to rotate half a revolution. At this time, the state of the switching plate 327 changes, sealing the connecting hole. Subsequently, the piston rod extends, driving the movable rod 322 into the guide groove 3238, and driving the gripping assembly 31 closer to the rotary table 22. At the same time, the sliding block 451 is reset under the action of the tension spring 457, while the rotating rod 453 rotates against the resistance of the torsion spring 456 to avoid the rotating disk 43 and prevent it from jamming.

[0058] Reference Figure 7 and Figure 8 In order to make the rotation angle of the rotating disk 43 more accurate, a limit component 6 is provided on the first slide rail 3231. The limit component 6 includes two coaxially arranged circular sleeves 61, one of which is coaxially fixed on the rotating disk 43, and the other circular sleeve 61 is slidably connected to the first slide rail 3231 along its own axis.

[0059] Reference Figure 7 and Figure 8 For ease of description, the circular sleeve 61 connected to the rotating disk 43 is defined as the first sleeve 611, and the sleeve connected to the first slide rail 3231 is defined as the second sleeve 612. Two limiting protrusions 62 are evenly spaced around the rotation axis of the second sleeve 612 near the end face of the first sleeve 611, and a limiting groove 63 is provided on the first sleeve 611 corresponding to the limiting protrusions 62.

[0060] Combination Figure 7An elastic element is provided between the second cylinder 612 and the support 321. This elastic element is used to maintain the second cylinder 612's tendency to move closer to the first cylinder 611. Here, the elastic element is also a spring. It is important to note that the elastic force of this element should be sufficiently large. In this embodiment, with the limiting protrusion 62 embedded in the limiting groove 63, the force exerted by the elastic element on the second cylinder 612 is not less than 200N to improve the effect of limiting the rotation of the rotating disk. Inclined surfaces 64 are provided on both sides of the limiting protrusion 62 parallel to the axis of the second cylinder 612. The inclined surfaces 64 are inclined along the axial direction of the second cylinder 612 from the direction away from the first cylinder 611 to the direction closer to the first cylinder 611, forming a sharp point at the position of the limiting protrusion 62 near the first cylinder 611. The limiting protrusion 62 is embedded in the limiting groove 63. During the rotation of the rotating disk 43, the inclined surfaces 64 can guide the second cylinder 612 to overcome the resistance of the elastic element and move away from the first cylinder 611. Simultaneously, when the limiting protrusion 62 moves to the position corresponding to another limiting groove 63, it can drive the rotating disk 43 to rotate actively under the action of the elastic element and the inclined surface 64, so that the lever 454 does not need to drive the rotating disk 43 to rotate 180°. Figure 4 In addition, the elastic element can also limit the rotation of the rotating disk 43, thereby making the switching plate 327 more stable during use.

[0061] Reference Figure 2 In this embodiment, the gripping component 31 is a pneumatic gripper (manufactured by Rouchu, model: FM-A5V5-LS1). This model of pneumatic gripper has an adjustable gripping force range between 10N and 60N, suitable for gripping drill bits with a diameter of 20mm–80mm. The outer shell of the pneumatic gripper is fixedly connected to the movable rod 322 by welding or screws, allowing the movement of the movable rod 322 to drive the movement of the pneumatic gripper, thus enabling the picking and placing of workpieces. In other embodiments, other types of gripping tools can be selected according to actual needs. In this embodiment, a conveyor belt device 5 is provided between the material preparation area and the connecting device 3 to transport workpieces, facilitating loading and unloading.

[0062] The implementation principle of the intelligent laser cladding welding device for drilling tool processing in this embodiment is as follows: In the initial operating state, the piston cylinder of the cylinder is extended, the movable rod 322 is located at the position corresponding to the second slide rail 3232, and the movable rod 322 is parallel to the ground. At this time, the conveyor belt device 5 drives the workpiece close to the gripping component 31, and then the gripping component 31 grips the workpiece. After the gripping component 31 grips the workpiece, the piston rod of the cylinder retracts, pulling one end of the movable rod 322 downward. Under the action of the pulling force, the movable rod 322 rotates, and at the same time, the sliding column 324 slides in the second slide rail 3232 and enters the common groove 3239. After the sliding column 324 enters the common groove 3239, the retaining ring 458 on the piston rod abuts against the sliding block 451, driving the sliding block 451 to slide downward, thereby causing the rotating rod 453 to drive the lever 454 to move, causing the rotating disk 43 to rotate.

[0063] During the rotation of the rotating disk 43, the limiting protrusion 62 disengages from the limiting groove 63. As the rotating disk 43 rotates, when the limiting protrusion 62 aligns with another limiting groove 63, the rotating disk 43 automatically rotates under the action of the elastic element and the inclined surface 64 until the limiting protrusion 62 is completely inserted into the limiting groove 63. At this time, the switching plate 327 completes the state transition and seals the connecting hole.

[0064] Subsequently, the piston rod of the cylinder extends again, and the sliding column 324 slides in the common groove 3239 and enters the guide groove 3238. At the same time, the movable rod 322 drives the workpiece to move vertically upward and inserts the workpiece between the jaws of the three-jaw chuck 23. Then, the three-jaw chuck 23 grabs the workpiece to complete the connection. Then, the rotary table 22 can be controlled to rotate so that the adjacent welded workpieces correspond to the gripping assembly 31. The gripping assembly 31 grabs the welded workpiece to complete the unloading. Then, the piston rod of the cylinder retracts, driving the sliding column 324 into the common groove 3239. At the same time as the piston rod retracts, it drives the rotating disk 43 to rotate half a turn again, thereby changing the state of the switching plate 327. At this time, the piston rod of the cylinder extends again, which can drive the movable rod 322 into the groove on the second slide rail 3232. Then, the gripping assembly 31 can place the welded workpiece on the conveyor belt device 5 to complete the unloading.

[0065] Of course, in some embodiments, this device may be used only for loading or unloading operations, and the specific control can be made based on the experience of those skilled in the art.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intelligent laser cladding welding device for drilling tool processing, comprising a welding robot (1) and a worktable (2), wherein the welding robot (1) is disposed on one side of the worktable (2), and a laser welding device is mounted on the welding robot (1); characterized in that, It also includes a connecting device (3); the connecting device (3) is located below the workbench (2) and is used to grab the drill bit and drive the drill bit to move; wherein, the connecting device (3) includes a gripping component (31) for gripping the drill bit and a moving guide device (32) for driving the gripping component (31) to move in the vertical and horizontal directions; the moving guide device (32) includes a support (321) and a movable rod (322) mounted on the support (321) and The slide rail (323) includes a first slide rail (3231) and a second slide rail (3232). The first slide rail (3231) is vertically arranged below the rotary table (22), and the second slide rail (3232) is horizontally arranged on one side of the first slide rail (3231). A sliding column (324) is provided on the movable rod (322). The sliding column (324) can slide in the groove of the slide rail (323) and drive the gripping component (31) to move in different directions.

2. The intelligent laser cladding welding device for drilling tool processing according to claim 1, characterized in that, A connecting hole is provided on the side of the first slide rail (3231) near the second slide rail (3232), and a switching plate (327) is rotatably installed in the connecting hole. Rotating the switching plate (327) can block the connecting hole or divide the slide groove provided on the first slide rail (3231). When the switching plate (327) divides the slide groove on the first slide rail (3231), it forms a guide groove (3238) above the switching plate (327) and a common groove (3239) below the switching plate (327). In this state, the switching plate (327) is connected to the second slide rail (3232), so that the common groove (3239) is connected to the slide groove on the second slide rail (3232).

3. The intelligent laser cladding welding device for drilling tool processing according to claim 2, characterized in that, The sliding column (324) is a cylindrical structure, and a driving member (325) is provided on the support (321). The driving member (325) is used to drive the movable rod (322) to move linearly along the length direction of the first slide (3231) at the end away from the gripping component (31).

4. The intelligent laser cladding welding device for drilling tool processing according to claim 3, characterized in that, The support (321) is provided with a linkage component (4), which is used to transmit power between the driving component (325) and the switching plate (327). The linkage component (4) includes a rotating disk (43), a connecting rod (44), a rack (42) and a gear (41). The rack (42) is fixedly connected to the switching plate (327), and the rack (42) meshes with the gear (41) and can slide relative to the support (321). The rotating disk (43) can rotate relative to the support (321). The two ends of the connecting rod (44) are rotatably connected to the rotating disk (43) and the rack (42) respectively. The rotation of the rotating disk (43) can drive the rack (42) to move back and forth. The linkage component (4) also includes a one-way drive component (45), which is connected to the driving component (325) and is used to drive the rotating disk (43) to rotate in one direction.

5. The intelligent laser cladding welding device for drilling tool processing according to claim 4, characterized in that, The unidirectional drive assembly (45) includes a sliding block (451) and a rotating rod (453). The sliding block (451) is slidably connected to the first slide rail (3231) along the length direction of the first slide rail (3231). The rotating rod (453) is mounted on the sliding block (451) and located above the rotating disk (43). A lever (454) is provided on the rotating disk (43). When the sliding block (451) moves downward, the rotating rod (453) can move the lever (454). The end of the rotating rod (453) near the rotating disk (43) can rotate towards the ground.

6. The intelligent laser cladding welding device for drilling tool processing according to claim 1, characterized in that, The worktable (2) includes a support (21), a rotary table (22) and a three-jaw chuck (23). The rotary table (22) is rotatably connected to the support (21). The three-jaw chuck (23) is mounted on the rotary table (22) and multiple chucks are arranged around the rotation axis of the rotary table (22).

7. The intelligent laser cladding welding device for drilling tool processing according to claim 5, characterized in that, The unidirectional drive assembly (45) also includes a tension spring (457) for maintaining the tendency of the slider (451) to slide away from the ground.

8. The intelligent laser cladding welding device for drilling tool processing according to claim 5, characterized in that, A limiting component (6) is provided on the first slide rail (3231) at the position corresponding to the rotating disk (43). The limiting component (6) includes a first cylinder (611) coaxially fixed on the rotating disk (43) and a second cylinder (612) slidably connected on the first slide rail (3231). Two limiting protrusions (62) are evenly spaced around their own axis on the second cylinder (612). A limiting groove (63) is provided on the first cylinder (611). The limiting protrusions (62) are embedded in the limiting groove (63). An inclined surface (64) is provided on the limiting protrusions (62). An elastic element is provided on the first slide rail (3231) to keep the second cylinder (612) moving towards the first cylinder (611). When the rotating disk (43) rotates, the inclined surface (64) can drive the second cylinder (612) away from the first cylinder (611).

9. The intelligent laser cladding welding device for drilling tool processing according to claim 8, characterized in that, The inclined surface (64) is set to two, and the two inclined surfaces (64) are respectively set on the two sides of the limiting protrusion (62) parallel to the axis of the second cylinder (612). The two inclined surfaces (64) are inclined in a direction that is closer to each other on the side away from the second cylinder (612).

10. The intelligent laser cladding welding device for drilling tool processing according to claim 1, characterized in that, The slide rail (323) is configured in two sets, with the two sets of slide rail (323) respectively located on both sides of the movable rod (322).

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