A TC bearing surfacing equipment and surfacing method thereof

Abstract

The present invention relates to the technical field of surfacing welding equipment, and proposes a TC bearing surfacing welding equipment and a surfacing welding operation method thereof, which can utilize centrifugal force to optimize and control the force of the molten pool during welding, further improve the control effect of the molten pool fluidity, further improve the welding quality, and have high welding efficiency and further enhance the practicality. The equipment comprises a welding gun and a TC bearing base, and also comprises a main structure, wherein the main structure comprises a four-corner support frame, the top end of the four-corner support frame is fixedly connected to a top mounting frame, the four-corner support frame is fixedly connected to a middle mounting frame, the middle mounting frame is rotatably connected to a rotating cylinder, the rotating cylinder is rotatably connected to the top mounting frame, a servo motor is installed at the bottom end of the middle mounting frame, a driving spur gear and a driven spur gear ring are fixedly connected to the output shaft of the servo motor and the outside of the rotating cylinder respectively, the driving spur gear is meshed with the driven spur gear ring, an electric clamping assembly is installed in the rotating cylinder, and the electric clamping assembly is used for clamping the TC bearing base.

Description

Technical Field

[0001] The present invention relates to the technical field of surfacing welding equipment, and in particular to a TC bearing surfacing welding equipment and a surfacing welding operation method thereof. Background Art

[0002] As we all know, TC bearings, or cemented carbide (TC) radial bearings, are key components widely used in oil exploration and drilling platforms. They are primarily used to withstand the radial loads generated during the operation of electric drill tools, ensuring a smooth and efficient drilling process. Due to material costs and wear resistance requirements, most TC bearings consist of an internal matrix and an external alloy layer. Therefore, TC bearing cladding equipment is usually used to form the connection between the internal matrix and the external alloy layer. To facilitate the manufacture of TC bearings, we have proposed a TC bearing cladding equipment and a cladding operation method.

[0003] After searching, the Chinese patent publication number CN111745261B discloses a TC bearing processing process, which is roughly described as including TC bearing cladding equipment, the TC bearing cladding equipment including a bed and a bearing fixing device arranged on the bed, a driving device connected to the bearing fixing device, a welding gun, a vibrating feeding mechanism and a welding wire feeding mechanism. When in use, one end of the TC bearing base is fixed to the bearing chuck, the axial movement speed and circumferential rotation speed of the driving device are set by the controller, and the welding parameters of the welding gun are set, a plurality of carbide blocks are placed in the vibrating disk, the carbide blocks are automatically arranged by the vibration of the vibrating disk and transported along the guide trough to the surface of the TC bearing base, the welding gun and the driving device are turned on, and the carbide blocks are spot-welded to the surface of the TC bearing base. The Chinese patent publication number CN216503154U discloses a TC bearing cladding equipment, which is roughly described as follows: The cam is fixedly mounted on the support frame of the chassis, and the cam is fixedly mounted on the support frame of the chassis to the support frame of the chassis.

[0004] Although the above-mentioned existing technical solutions can realize the welding connection of the carbide block relative to the TC bearing base and achieve the welding manufacturing of the TC bearing, it can be clearly found that the requirements for welding quality are relatively strict when considering the use environment of the TC bearing. Comprehensively evaluating the above-mentioned two sets of technical solutions, both have a welding angle from top to bottom, so the fluidity of the molten pool during welding is affected by gravity. Although this can improve the welding quality to a certain extent, considering that gravity is limited by the influence of gravitational acceleration, if it is necessary to further control the tightness of the welding molten pool to improve the welding quality, the above-mentioned technical solutions have great limitations and their practicality needs to be further improved. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a TC bearing surfacing equipment and a surfacing method thereof, which can utilize centrifugal force to optimize and control the force of the molten pool during the welding process, further improve the control effect of the molten pool fluidity, further improve the welding quality, and have higher welding efficiency and further enhance practicality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a TC bearing surfacing device, comprising a welding gun and a TC bearing base, and also comprising a main structure, wherein the main structure comprises a four-corner support frame, the top end of the four-corner support frame is fixedly connected to a top mounting frame, the four-corner support frame is fixedly connected to a middle mounting frame, the middle mounting frame is rotatably connected to a rotating cylinder, the rotating cylinder is rotatably connected to the top mounting frame, a servo motor is installed at the bottom end of the middle mounting frame, a driving spur gear and a driven spur gear ring are fixedly connected to the output shaft of the servo motor and the outside of the rotating cylinder respectively, the driving spur gear and the driven spur gear ring are fixedly connected to the driven spur gear ring. The spur gear rings are meshed with each other, and an electric clamping assembly is installed in the rotating cylinder, which is used to clamp the TC bearing base. A center hole is opened in the rotating cylinder, and a through-tube is fixedly connected in the center hole. An electric lifting rod is installed at the bottom end of the through-tube, and a lifting cylinder is installed on the lifting rod of the electric lifting rod. The lifting cylinder is slidably connected in the through-tube, and a centrifugal follower assembly is installed on the lifting cylinder. The welding gun is installed on the centrifugal follower assembly, and a distribution assembly is installed on the centrifugal follower assembly. The distribution assembly is used for distributing carbide particles relative to the TC bearing base.

[0007] Preferably, the centrifugal follower assembly includes a mounting cross cylinder, the mounting cross cylinder is fixedly connected to the lifting cylinder, a telescopic cross rod is slidably connected in the mounting cross cylinder, the welding gun is mounted at one end of the telescopic cross rod, the other end of the telescopic cross rod is fixedly connected to an end shell frame, an electromagnet is mounted in the end shell frame, an end of the mounting cross cylinder away from the welding gun is fixedly connected to an elastic spring, the elastic spring is fixedly connected to the end shell frame, an end of the mounting cross cylinder close to the end shell frame is fixedly connected to an end iron ring, the end iron ring matches the electromagnet, the elastic spring is sleeved outside the telescopic cross rod, a plurality of auxiliary iron rings are fixedly connected in the elastic spring, the plurality of auxiliary iron rings are each provided with a center hole, the plurality of center holes are each used for the passage of the telescopic cross rod, and the plurality of auxiliary iron rings are each matched with the electromagnet.

[0008] Preferably, the cloth assembly includes a laminating frame, the laminating frame is provided with an inner concave arc surface matching the TC bearing base, the laminating frame is connected relative to the telescopic cross bar through two connecting springs, the laminating frame is provided with a welding port, a feed port, a discharge port, an upper mounting arc port and a lower mounting arc port, the feed port and the discharge port are both connected with the welding port, the top of the laminating frame is connected with a storage hopper, a shielding cover is slidably connected to the storage hopper, the sliding opening direction of the shielding cover is opposite to the direction of the centrifugal force during the rotation of the rotating drum, the upper mounting arc port and the lower mounting arc port are respectively connected with the feed port and the discharge port, two upper opposing closing strips are slidably connected in the upper mounting arc port, and two lower opposing closing strips are slidably connected in the lower mounting arc port, a centrifugal closing mechanism and a centrifugal opening mechanism are installed on the laminating frame, the centrifugal closing mechanism matches the two lower opposing closing strips, and the centrifugal opening mechanism matches the two upper opposing closing strips.

[0009] Preferably, the centrifugal closing mechanism includes two opening springs and two opposing traction ropes, two storage grooves are opened in the discharge port, the two opening springs are fixedly connected in the two storage grooves respectively, the two opening springs are fixedly connected to the two lower opposing closing strips respectively, the two opposing traction ropes are fixedly connected to the two lower opposing closing strips respectively, two guide cylinders are fixedly connected to the outside of the bonding frame, the two opposing traction ropes are slidably connected in the two guide cylinders respectively, and the two opposing traction ropes are fixedly connected with the first centrifugal counterweight block.

[0010] Preferably, the centrifugal opening mechanism includes two closing springs and two second centrifugal counterweights, the two closing springs are fixedly connected in the upper mounting arc opening, the two upper opposing closing strips are respectively fixedly connected to the two closing springs, and the two second centrifugal counterweights are respectively fixedly connected to the ends of the two upper opposing closing strips that are away from each other.

[0011] Preferably, two outward-extending ear plates are fixedly connected to the telescopic cross bar, and the two outward-extending ear plates are fixedly connected to the two connecting springs respectively. Two bosses are fixedly connected to the fitting frame, and the two bosses are fixedly connected to the two connecting springs respectively. Guide rods are respectively installed in the two connecting springs, and the two guide rods are respectively fixedly connected to the two bosses. Guide holes are provided on the two outward-extending ear plates, and the two guide rods are respectively slidably connected to the two guide holes.

[0012] Preferably, the electric clamping assembly includes a rotating vertical shaft and a reduction motor. The rotating vertical shaft is rotatably connected in the rotating cylinder. An electric three-jaw chuck is installed on the rotating vertical shaft. The electric three-jaw chuck is used to clamp the TC bearing base. The reduction motor is installed in the rotating cylinder. A driving bevel gear and a driven bevel gear ring are respectively installed on the output shaft of the reduction motor and the rotating vertical shaft. The driving bevel gear and the driven bevel gear ring are meshed with each other.

[0013] Preferably, a rotating access disk is fixedly connected to the bottom end of the rotating cylinder, and the rotating access disk is rotatably matched with the middle mounting frame. A fixed access disk is installed at the bottom end of the middle mounting frame, and a plurality of graphite conductor inner rings and a plurality of annular inner groove cavities are provided in the rotating access disk. A plurality of graphite conductor outer rings and a plurality of annular outer groove cavities are provided in the fixed access disk. The plurality of graphite conductor inner rings are respectively matched with the plurality of graphite conductor outer rings to form circuit communication, and the plurality of annular inner groove cavities are respectively matched with the plurality of annular outer groove cavities to form air path communication.

[0014] Preferably, a bottom mounting plate is fixedly connected to the four corner support frames, a plurality of mounting holes are provided on the bottom mounting plate, a circular track is fixedly connected to the top mounting frame, a fixed half-shell is connected to the circular track, and a movable half-shell is rotatably connected to the fixed half-shell.

[0015] A surfacing welding method for TC bearing surfacing equipment comprises the following steps:

[0016] S1. Before operation, first install the welding machine and gas supply line for the welding gun, and complete the installation of the electric clamping assembly, centrifugal follower assembly, electric lifting rod, servo motor and supporting circuit of the welding machine. Then, install the TC bearing base to be welded in the electric clamping assembly, and load the hard alloy particles into the material distribution assembly to complete the preparation work before the welding operation.

[0017] S2. In the stationary state, the distribution assembly can control the carbide particles contained therein to form an independent storage, that is, the carbide particles do not form a distribution relative to the TC bearing base. Through the meshing transmission of the driving spur gear and the driven spur ring, the servo motor is powered on to realize the rotational drive of the rotating drum. Since the TC bearing base clamped by the electric clamping assembly is arranged off-center in the rotating drum, the TC bearing base is subjected to centrifugal force as a whole when it rotates synchronously with the rotating drum, and the centrifugal force exerted on the TC bearing base is controlled by the rotation speed of the rotating drum;

[0018] S3. As the rotating drum speed increases, the welding gun approaches the TC bearing base under the influence of centrifugal force, and the material distribution assembly and the TC bearing base are aligned for material distribution. As the rotating drum speed further increases and the rotating drum reaches the operating speed, it maintains a constant speed. The material distribution assembly distributes the cemented carbide particles therein relative to the TC bearing base. Under the action of centrifugal force, the cemented carbide particles distributed relative to the TC bearing base adhere to the side of the TC bearing base due to the relative friction between the two.

[0019] S4. Finally, the welding machine is powered on to realize the welding operation of the welding gun relative to the TC bearing substrate. During the welding operation, the carbide particles attached to the surface of the TC bearing substrate will form adhesion relative to the TC bearing substrate in the welding pool, so as to achieve the surfacing connection of the carbide particles on the surface of the TC bearing substrate. During the welding process, the centrifugal force of the welding pool can ensure that the welding pool has a better accumulation effect relative to the TC bearing substrate, thereby improving the welding density and ensuring the welding quality.

[0020] Compared with the prior art, the present invention provides a TC bearing surfacing equipment and surfacing method thereof, which has the following beneficial effects:

[0021] (1) In the present invention, the electric clamping assembly is designed to form a corresponding clamping structure with the TC bearing base, and while ensuring the relative position stability of the TC bearing base during the surfacing operation, the TC bearing base can also be rotated and adjusted to ensure the surfacing coverage of the complete annular surface on the TC bearing base.

[0022] (2) In the present invention, the design of the centrifugal follower assembly provides the necessary structure for the installation of the welding gun in the rotating cylinder. At the same time, the relative position adjustment of the welding gun relative to the TC bearing base to be welded can be achieved to ensure the position adjustment of the welding gun relative to the TC bearing base during welding, and the welding gun can be moved away from the TC bearing base after welding.

[0023] (3) In the present invention, the distribution of carbide particles during the welding process of the TC bearing matrix is ​​formed by designing the distribution component and matching the centrifugal follower component. The distribution continuity is good and the welding connection is also good.

[0024] (4) In the present invention, a complete installation structure of the electric clamping assembly, the centrifugal follower assembly and the cloth assembly is formed through the design of the main structure, which can realize the formation of basic centrifugal motion, and then ensure that the TC bearing matrix is ​​in an environment where centrifugal force is applied, and finally realize the surfacing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the movable half shell of the present invention when it is rotated and opened relative to the fixed half shell;

[0026] Figure 2 For the present invention Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the laminating frame, the guide cylinder and the first centrifugal weight block of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention in a stepped cross-section;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at B in the middle;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the cooperation between the laminating frame and the boss of the present invention;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the fixed access plate and the outer ring of the graphite conductor cooperating with each other in the present invention;

[0032] Figure 8 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 9 It is a schematic diagram of a partially cutaway bottom-up three-dimensional structure of the present invention;

[0034] Figure 10 It is a bottom-view schematic diagram of the three-dimensional structure of the coordination of the traction rope, the guide cylinder and the first centrifugal weight block of the present invention;

[0035] Figure 11 It is a partially cutaway three-dimensional structural diagram of the cooperation of the laminating frame, the upper oppositely movable sealing strip, and the lower oppositely movable sealing strip of the present invention;

[0036] Figure 12It is a partially cutaway perspective structural diagram of the telescopic crossbar, end housing frame, and electromagnet of the present invention;

[0037] Figure 13 It is a partially exploded three-dimensional structural diagram of the cooperation of the laminating frame, the upper oppositely movable sealing strip and the lower oppositely movable sealing strip of the present invention;

[0038] Figure 14 It is a schematic diagram of the three-dimensional structure of the laminating frame, the guide cylinder and the boss according to the present invention;

[0039] Figure 15 It is a schematic diagram of the three-dimensional structure of the cooperation of the lower movable closing strip, the opening spring and the movable traction rope of the present invention.

[0040] In the figure: 1. welding gun; 2. TC bearing base; 3. four-corner support frame; 4. top mounting frame; 5. middle mounting frame; 6. rotating cylinder; 7. driving spur gear; 8. driven spur gear ring; 9. through-tube; 10. electric lifting rod; 11. lifting cylinder; 12. mounting cross cylinder; 13. telescopic cross rod; 14. end shell frame; 15. electromagnet; 16. elastic spring; 17. end iron ring; 18. auxiliary iron ring; 19. fitting frame; 20. connecting spring; 21. concave arc surface; 22. welding port; 23. feeding port; 24. discharging port; 25. upper mounting arc port; 26. lower mounting arc port; 27. storage hopper; 28. shielding cover; 29. ​​upper shift closing strip; 30. lower shift closing strip; Shift closing strip; 31. Opening spring; 32. Counter-moving traction rope; 33. Storage tank; 34. Guide cylinder; 35. First centrifugal counterweight; 36. Closing spring; 37. Second centrifugal counterweight; 38. Outward ear plate; 39. Boss; 40. Guide rod; 41. Rotating vertical axis; 42. Reducer motor; 43. Electric three-jaw chuck; 44. Driving bevel gear; 45. Driven bevel gear ring; 46. Rotating access disk; 47. Fixed access disk; 48. Graphite conductor inner ring; 49. Annular inner groove cavity; 50. Graphite conductor outer ring; 51. Annular outer groove cavity; 52. Bottom mounting plate; 53. Mounting hole; 54. Annular track; 55. Fixed half-shell; 56. Movable half-shell. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] For examples, see Figures 1-15, a TC bearing surfacing equipment, including a welding gun 1 and a TC bearing base 2, also includes a main structure, the main structure includes four corner support frames 3, the top of the four corner support frames 3 is fixedly connected to the top mounting frame 4, the four corner support frames 3 are fixedly connected to the middle mounting frame 5, the middle mounting frame 5 is rotatably connected to the rotating cylinder 6, the rotating cylinder 6 is rotatably connected to the top mounting frame 4, a servo motor is installed at the bottom end of the middle mounting frame 5, the output shaft of the servo motor and the outside of the rotating cylinder 6 are respectively fixedly connected with a driving spur gear 7 and a driven spur gear ring 8, the driving spur gear 7 is meshed with the driven spur gear ring 8, an electric clamping assembly is installed in the rotating cylinder 6, the electric clamping assembly is used for clamping the TC bearing base 2, the electric clamping assembly includes a rotating vertical shaft 41 and a reduction motor 42, the rotating vertical shaft 41 is rotatably connected to the rotating cylinder 6, an electric three-jaw chuck 43 is installed on the rotating vertical shaft 41, the electric three-jaw chuck 43 is used for clamping the TC bearing base 2, the reduction motor 42 is installed in the rotating cylinder 6, the reduction motor The driving bevel gear 44 and the driven bevel gear ring 45 are respectively installed on the output shaft of 42 and the rotating vertical shaft 41. The driving bevel gear 44 and the driven bevel gear ring 45 are meshed with each other. Through the design of the electric clamping assembly, the TC bearing base 2 is matched to form a corresponding clamping structure. While ensuring the relative position stability of the TC bearing base 2 during the surfacing operation, the rotation adjustment of the TC bearing base 2 can also be realized to ensure the surfacing coverage of the complete annular surface on the TC bearing base 2. A center hole is opened in the rotating cylinder 6, and a through-tube 9 is fixedly connected in the center hole. An electric lifting rod 10 is installed at the bottom end of the through-tube 9, and a lifting cylinder 11 is installed on the lifting rod of the electric lifting rod 10. The lifting cylinder 11 is slidably connected in the through-tube 9. Through the design of the main structure, a complete installation structure of the electric clamping assembly, the centrifugal follower assembly and the cloth assembly is formed, which can realize the formation of basic centrifugal motion, thereby ensuring that the TC bearing base 2 is in an environment where centrifugal force is applied, and finally realizing the surfacing operation.

[0043] It should be further explained that a centrifugal follower assembly is installed on the lifting cylinder 11, and the welding gun 1 is installed on the centrifugal follower assembly. The centrifugal follower assembly includes a mounting cross cylinder 12, which is fixedly connected to the lifting cylinder 11, and a telescopic cross bar 13 is slidably connected inside the mounting cross cylinder 12. The welding gun 1 is mounted at one end of the telescopic cross bar 13, and the other end of the telescopic cross bar 13 is fixedly connected to an end shell frame 14. An electromagnet 15 is installed in the end shell frame 14, and an end of the mounting cross cylinder 12 away from the welding gun 1 is fixedly connected to an elastic spring 16, and the elastic spring 16 is fixedly connected to the end shell frame 14. An end of the mounting cross cylinder 12 close to the end shell frame 14 is fixedly connected to an end iron ring 17, and the end iron ring 17 matches the electromagnet 15. The elastic spring 16 is sleeved outside the telescopic cross bar 13, and the elastic spring 16 is fixed inside the elastic spring 16. There are multiple auxiliary iron rings 18 connected to the fixed body, and multiple auxiliary iron rings 18 are all provided with center holes. Multiple center holes are used for the passage of the telescopic cross bar 13. Multiple auxiliary iron rings 18 are matched with the electromagnet 15. When the electromagnet 15 is energized to generate an electromagnetic field, the multiple auxiliary iron rings 18 are attracted from near to far by the magnetic attraction, which can achieve auxiliary compression of the elastic spring 16. The design of the centrifugal follower assembly provides the necessary structure for the installation of the welding gun 1 in the rotating cylinder 6. At the same time, it can also achieve the relative position adjustment of the welding gun 1 relative to the TC bearing base 2 to be welded, so as to ensure the position adjustment of the welding gun 1 relative to the TC bearing base 2 during welding, and also achieve the distance of the welding gun 1 from the TC bearing base 2 after welding. The centrifugal follower assembly is equipped with a cloth assembly. Parts, the cloth assembly is used for distributing the carbide particles relative to the TC bearing matrix 2, the cloth assembly includes a fitting frame 19, the fitting frame 19 is provided with an inner concave arc surface 21 matching the TC bearing matrix 2, the fitting frame 19 is connected to the telescopic cross bar 13 through two connecting springs 20, the telescopic cross bar 13 is fixedly connected to two outward-extending ear plates 38, the two outward-extending ear plates 38 are respectively fixedly connected to the two connecting springs 20, the fitting frame 19 is fixedly connected to two bosses 39, the two bosses 39 are respectively fixedly connected to the two connecting springs 20, the two connecting springs 20 are both equipped with guide rods 40, the two guide rods 40 are respectively fixedly connected to the two bosses 39, the two outward-extending ear plates 38 are each provided with a guide hole, and the two guide rods 40 slide respectively with the two guide holes The bonding frame 19 is provided with a welding port 22, a feed port 23, a discharge port 24, an upper mounting arc port 25 and a lower mounting arc port 26. The feed port 23 and the discharge port 24 are both connected to the welding port 22. The top of the bonding frame 19 is connected to a storage hopper 27. A shielding cover 28 is slidably connected to the storage hopper 27. The sliding opening direction of the shielding cover 28 is opposite to the direction of the centrifugal force during the rotation of the rotating cylinder 6. During the rotation of the rotating cylinder 6, the shielding cover 28 will not open relative to the storage hopper 27 due to the influence of the centrifugal force. The upper mounting arc port 25 and the lower mounting arc port 26 are respectively connected to the feed port 23 and the discharge port 24. Two upper opposing closing strips 29 are slidably connected in the upper mounting arc port 25, and two lower opposing closing strips 30 are slidably connected in the lower mounting arc port 26.

[0044] It should be further explained that a centrifugal closing mechanism and a centrifugal opening mechanism are installed on the laminating frame 19. The centrifugal closing mechanism matches the two lower opposing closing strips 30, and the centrifugal opening mechanism matches the two upper opposing closing strips 29. The centrifugal closing mechanism includes two opening springs 31 and two opposing traction ropes 32. Two storage slots 33 are provided in the discharge port 24. The two opening springs 31 are fixedly connected to the two storage slots 33 respectively. The two opening springs 31 are fixedly connected to the two lower opposing closing strips 30 respectively. The two opposing traction ropes 32 are fixedly connected to the two lower opposing closing strips 30 respectively. The outside of the laminating frame 19 There are two guide cylinders 34 fixedly connected, and two opposing traction ropes 32 are respectively slidably connected in the two guide cylinders 34. The two opposing traction ropes 32 are fixedly connected to the first centrifugal counterweight 35. The centrifugal opening mechanism includes two closing springs 36 and two second centrifugal counterweights 37. The two closing springs 36 are fixedly connected in the upper mounting arc 25. The two upper opposing closing strips 29 are respectively fixedly connected to the two closing springs 36. The two second centrifugal counterweights 37 are respectively fixedly connected to the ends of the two upper opposing closing strips 29 away from each other. Through the design of the cloth component, the TC bearing base is formed in combination with the centrifugal follower component. The distribution of cemented carbide particles during the welding process of the body 2 has good distribution continuity and good welding connectivity. The bottom end of the rotating cylinder 6 is fixedly connected to a rotating access disk 46, and the rotating access disk 46 is rotatably matched with the middle mounting frame 5. The bottom end of the middle mounting frame 5 is installed with a fixed access disk 47. A plurality of graphite conductor inner rings 48 and a plurality of annular inner groove cavities 49 are provided in the rotating access disk 46. A plurality of graphite conductor outer rings 50 and a plurality of annular outer groove cavities 51 are provided in the fixed access disk 47. The plurality of graphite conductor inner rings 48 are matched with the plurality of graphite conductor outer rings 50 to form a circuit connection. The plurality of annular inner groove cavities 49 are respectively connected to the rotating access disk 46. The bottom mounting plate 52 is fixedly connected to the four corner support frames 3, and a plurality of mounting holes 53 are provided on the bottom mounting plate 52. The top mounting frame 4 is fixedly connected to the annular track 54, and the annular track 54 is connected to the fixed half-shell 55. The fixed half-shell 55 is rotatably connected to the movable half-shell 56, which forms a protection for the rotation state of the rotating cylinder 6 and improves the safety of the rotation operation of the rotating cylinder 6. In order to facilitate the observation of the welding state in the rotating cylinder 6, the fixed half-shell 55 or the movable half-shell 56 can be made of transparent material or an observation port can be set on the structure.

[0045] The servo motor, electric lifting rod 10, welding gun 1, electromagnet 15, reduction motor 42 and electric three-jaw chuck 43 in this embodiment are all conventional equipment purchased on the market and well known to those skilled in the art. In the present invention, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of the instruction manual, and will not be described in detail here.

[0046] In summary, the working principle of the TC bearing cladding equipment and the cladding method thereof is as follows: when in use, before operation, the welding machine and the gas supply circuit are first installed for the welding gun 1, and the installation of the reduction motor 42, the electric three-jaw chuck 43, the electromagnet 15, the electric lifting rod 10, the servo motor and the supporting circuit of the welding machine is completed. During the electrical installation process, the external circuit is first connected to the multiple graphite conductor outer rings 50, and then the reduction motor 42, the electric three-jaw chuck 43, the electromagnet 15, the electric lifting rod 10, the servo motor and the welding machine supporting graphite conductor inner ring 48 are electrically connected. When the rotating cylinder 6 rotates, the stone The graphite conductor inner ring 48 and the graphite conductor outer ring 50 form an electrical connection in a relative rotation state. For the gas supply required during welding, it is connected to the annular outer groove cavity 51 through an external pipeline, and the matching gas path on the welding gun 1 is connected to the annular inner groove cavity 49. When the rotating cylinder 6 rotates, the annular inner groove cavity 49 and the annular outer groove cavity 51 are kept in gas communication at all times. Then, the TC bearing base 2 that needs to be surfacing is clamped and installed in the electric clamping assembly, that is, the corresponding clamping of the TC bearing base 2 is formed by the electric three-jaw chuck 43, and carbide particles are loaded into the material distribution assembly. When the carbide particles are loaded, First, pull open the shielding cover 28 relative to the storage hopper 27 to open the top of the storage hopper 27, which is convenient for loading carbide particles relative to the storage hopper 27. After loading is completed, insert the shielding cover 28 again relative to the storage hopper 27 to close the top of the storage hopper 27, completing the preparation work before the surfacing operation. In the static state, under the elastic action of the two closing springs 36, the two upper opposing closing strips 29 are in relative contact, and the feed port 23 and the welding port 22 are in a partition state. The distribution component can control the carbide particles loaded therein to form an independent storage, that is, the carbide particles do not form a distribution relative to the TC bearing matrix 2. The material is fed into the rotating drum 6, and in a stationary state, under the elastic pushing action of the two opening springs 31, the two lower opposing closing strips 30 are relatively moved away from each other to open, so that the discharge port 24 and the welding port 22 are in a connected state. Through the meshing transmission action of the driving spur gear 7 and the driven spur gear ring 8, the servo motor is powered on to realize the rotation drive of the rotating drum 6. Since the TC bearing base 2 clamped by the electric clamping assembly is arranged off-center in the rotating drum 6, the TC bearing base 2 will be in a centrifugal force state as a whole when it rotates synchronously with the rotating drum 6, and the centrifugal force borne by the TC bearing base 2 is controlled by the speed of the rotating drum 6.

[0047] Furthermore, as the speed of the rotating cylinder 6 increases, under the influence of centrifugal force, the welding gun 1 tends to approach the TC bearing base 2. During this process, the elastic spring 16 is compressed and the telescopic cross bar 13 approaches the TC bearing base 2 relative to the mounting cross cylinder 12, which also enables the welding gun 1 to approach the TC bearing base 2 and enables the material distribution assembly to form a feeding match with the TC bearing base 2, that is, the fitting frame 19 forms relative contact with the TC bearing base 2. As the speed of the rotating cylinder 6 further increases, under the action of centrifugal force, the two first centrifugal counterweights 35 and the two second centrifugal counterweights 37 will be affected by the centrifugal force. Under the action of centrifugal force, the first centrifugal counterweights 35 forms a pull on the lower opposing closing strip 30 through the opposing traction rope 32, and when the centrifugal force is large enough, the two lower opposing closing strips 30 will move relative to each other and enter a state of contact with each other, thereby achieving relative isolation between the discharge port 24 and the welding port 22, and under the action of centrifugal force, the second centrifugal counterweight 37 will drive the corresponding upper opposing closing strip 29 to overcome the elastic force of the closing spring 36 and move. When the two upper opposing closing strips 29 move away from each other and the blanking ports on the two upper opposing closing strips 29 overlap, the connection between the feed port 23 and the welding port 22 can be achieved. The first centrifugal counterweight 35 and the second centrifugal counterweight 37 are made of materials with the same density, and the first centrifugal counterweight 35 and the second centrifugal counterweight 37 are made of materials with the same density. The volume of the counterweight 35 is larger than that of the second centrifugal counterweight 37. At the same time, the opening spring 31 and the closing spring 36 adopt the same elastic coil spring of the same specification. Therefore, in the process of gradually increasing the speed of the rotating drum 6, the two lower opposing closing strips 30 will first approach each other to form a partition between the discharge port 24 and the welding port 22. At this stage, the feed port 23 and the discharge port 24 are both separated from the welding port 22. When the speed of the rotating drum 6 is further increased, the two upper opposing closing strips 29 will have a suitable relative distance. In this state, the blanking ports on the two upper opposing closing strips 29 overlap with each other, and the speed of the rotating drum 6 is controlled to maintain the state of the two blanking ports overlapping with each other. Then, the hard material in the storage hopper 27 is kept away from the material. The carbide particles will fall into the welding port 22 under the action of their own gravity. The carbide particles falling into the welding port 22 will be retained in the welding port 22 under the support of the two lower opposing closing strips 30. As the rotation speed of the rotating drum 6 further increases, the relative distance between the two upper opposing closing strips 29 further increases, causing the blanking ports on the two upper opposing closing strips 29 to miss the position of overlapping with each other, and again blocking the carbide particles in the storage hopper 27 from entering the welding port 22. Thereafter, as the rotation speed of the rotating drum 6 further increases, the carbide particles entering the welding port 22 will form a fit relative to the TC bearing base 2 under the action of centrifugal force, in preparation for subsequent welding operations.

[0048] Furthermore, when the rotating drum 6 enters the working speed, it maintains a uniform speed. The distribution assembly makes the carbide particles inside it form a distribution relative to the TC bearing matrix 2. Under the action of centrifugal force, the carbide particles forming the distribution relative to the TC bearing matrix 2 will adhere to the side of the TC bearing matrix 2 under the action of the relative friction between the two. Then, the electromagnet 15 is energized to form a magnetic attraction between the end iron ring 17 and the multiple auxiliary iron rings 18, so as to further control the compression amount of the elastic spring 16, so that the welding gun 1 has a suitable welding distance relative to the TC bearing matrix 2. Finally, the welding machine is powered on to realize the welding gun 1 relative to the TC During the welding operation of the bearing base 2, the carbide particles attached to the surface of the TC bearing base 2 will form a weld adhesion relative to the TC bearing base 2 in the welding molten pool, so as to achieve a surfacing connection of the carbide particles on the surface of the TC bearing base 2. During the welding process, the centrifugal force of the welding molten pool can ensure that the welding molten pool has a better stacking effect relative to the TC bearing base 2, so as to improve the welding density and ensure the welding quality. During the welding process, the reduction motor 42 is powered on to drive the driving bevel gear 44 to rotate. Under the meshing transmission action of the driving bevel gear 44 and the driven bevel gear ring 45, the driving bevel gear 44 can rotate. The rotation drive of the rotating vertical shaft 41 can be realized, and the rotation drive of the rotating vertical shaft 41 realizes the rotation drive of the electric three-jaw chuck 43, and then realizes the rotation drive of the TC bearing base 2, so as to ensure that the TC bearing base 2 forms a complete annular surfacing at a certain height. During the welding process, the servo motor controls the rotating cylinder 6 to reduce the speed in stages, so that the two lower oppositely moving closing strips 30 enter a relatively open state, so as to achieve the discharge of the welding residue in the welding port 22 in the discharge port 24. After the welding residue is discharged inside and outside the discharge port 24, the servo motor increases the speed of the rotating cylinder 6 again to complete the re-engagement of the carbide particles relative to the welding port 22. During the material distribution and welding operation, the two blanking ports will also pass through the state of upper and lower overlap during the process of reducing the speed of the rotating drum 6. The process of controlling the speed reduction of the rotating drum 6 will not stay in the state of upper and lower overlap of the two blanking ports during the process of speed reduction. Therefore, the two blanking ports will quickly pass through the state of upper and lower overlap during this process. Therefore, in this process, the carbide particles dropped out of the two blanking ports in the instantaneous state of upper and lower overlap can be ignored. When the speed of the rotating drum 6 is increased again, the speed of the rotating drum 6 will stay in the state of upper and lower overlap of the two blanking ports to ensure that the carbide particles have enough time to fall into the welding port 22, as shown in the attached figure. Figure 6As shown, a stepped surface is provided on the inner concave arc surface 21 so that the convex surface of the TC bearing base 2 after the completion of the welding of the carbide particles affects the relative rotation of the fitting frame 19 relative to the TC bearing base 2. Considering the effect of gravity, after the TC bearing base 2 completes a surfacing ring, the electric lifting rod 10 is powered on to realize the raising of the lifting cylinder 11, and the welding operation of the next surfacing ring on the TC bearing base 2 is carried out, that is, the complete surfacing coverage of the entire TC bearing base 2 is realized from bottom to top, so as to achieve the stacking of the upper and lower surfacing rings during the welding process. At the same time, under the action of gravity, the welding molten pool also has a tendency to flow downward, which also ensures the relative connection effect between the upper and lower surfacing rings and further improves the welding quality of the surfacing.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A TC bearing surfacing device, comprising a welding gun (1) and a TC bearing base (2), characterized in that: The main structure also includes a four-corner support frame (3), the top of the four-corner support frame (3) is fixedly connected to the top mounting frame (4), the four-corner support frame (3) is fixedly connected to the middle mounting frame (5), the middle mounting frame (5) is rotatably connected to the rotating cylinder (6), the rotating cylinder (6) is rotatably connected to the top mounting frame (4), the bottom end of the middle mounting frame (5) is installed with a servo motor, the output shaft of the servo motor and the outside of the rotating cylinder (6) are respectively fixedly connected with a driving spur gear (7) and a driven spur gear ring (8), the driving spur gear (7) and the driven spur gear ring (8) are meshed, and an electric clamping assembly is installed in the rotating cylinder (6), the electric clamping assembly is used for the TC axis The TC bearing base (2) is clamped by the electric clamping assembly and is arranged in a manner deviating from the center of a circle in a rotating cylinder (6). A center hole is provided in the rotating cylinder (6). A through-hole (9) is fixedly connected in the center hole. An electric lifting rod (10) is installed at the bottom end of the through-hole (9). A lifting cylinder (11) is installed on the lifting rod of the electric lifting rod (10). The lifting cylinder (11) is slidably connected in the through-hole (9). A centrifugal follower assembly is installed on the lifting cylinder (11). The welding gun (1) is installed on the centrifugal follower assembly. A material distribution assembly is installed on the centrifugal follower assembly. The material distribution assembly is used for distributing carbide particles relative to the TC bearing base (2). The centrifugal follower assembly includes a mounting cross cylinder (12), the mounting cross cylinder (12) is fixedly connected to the lifting cylinder (11), a telescopic cross bar (13) is slidably connected in the mounting cross cylinder (12), the welding gun (1) is mounted on one end of the telescopic cross bar (13), the cloth assembly includes a fitting frame (19), the fitting frame (19) is provided with an inner concave arc surface (21) matching the TC bearing base (2), the fitting frame (19) is connected to the telescopic cross bar (13) via two connecting springs (20), the fitting frame (19) is provided with a welding port (22), a feeding port (23), a discharging port (24), an upper mounting arc port (25) and a lower mounting arc port (26), the feeding port (23) and the discharging port (24) are both connected to the welding port (22). The top of the laminating frame (19) is connected to a storage hopper (27), and a shielding cover (28) is slidably connected to the storage hopper (27). The sliding opening direction of the shielding cover (28) is opposite to the direction of the centrifugal force during the rotation of the rotating cylinder (6). The upper arc opening (25) and the lower arc opening (26) are respectively connected to the feed port (23) and the discharge port (24). Two upper opposing closing strips (29) are slidably connected in the upper arc opening (25), and two lower opposing closing strips (30) are slidably connected in the lower arc opening (26). A centrifugal closing mechanism and a centrifugal opening mechanism are installed on the laminating frame (19). The centrifugal closing mechanism matches the two lower opposing closing strips (30), and the centrifugal opening mechanism matches the two upper opposing closing strips (29).

2. The TC bearing surfacing equipment according to claim 1, characterized in that: The telescopic cross bar (13) is fixedly connected to an end shell frame (14), an electromagnet (15) is installed in the end shell frame (14), an end of the mounting cross cylinder (12) away from the welding gun (1) is fixedly connected to an elastic spring (16), the elastic spring (16) is fixedly connected to the end shell frame (14), an end of the mounting cross cylinder (12) close to the end shell frame (14) is fixedly connected to an end iron ring (17), the end iron ring (17) matches the electromagnet (15), the elastic spring (16) is sleeved on the outside of the telescopic cross bar (13), a plurality of auxiliary iron rings (18) are fixedly connected in the elastic spring (16), the plurality of auxiliary iron rings (18) are all provided with a center hole, the plurality of center holes are all used for the passage of the telescopic cross bar (13), and the plurality of auxiliary iron rings (18) are all matched with the electromagnet (15).

3. The TC bearing surfacing equipment according to claim 2, characterized in that: The centrifugal closing mechanism includes two opening springs (31) and two opposing traction ropes (32). Two storage grooves (33) are provided in the discharge port (24). The two opening springs (31) are fixedly connected to the two storage grooves (33) respectively. The two opening springs (31) are fixedly connected to the two lower opposing closure strips (30) respectively. The two opposing traction ropes (32) are fixedly connected to the two lower opposing closure strips (30) respectively. The laminating frame (19) is fixedly connected to two guide cylinders (34) outside. The two opposing traction ropes (32) are slidably connected to the two guide cylinders (34) respectively. The two opposing traction ropes (32) are fixedly connected to the first centrifugal counterweight (35).

4. The TC bearing surfacing equipment according to claim 3, characterized in that: The centrifugal opening mechanism comprises two closing springs (36) and two second centrifugal counterweights (37), the two closing springs (36) are fixedly connected in the upper mounting arc opening (25), the two upper opposing closing strips (29) are respectively fixedly connected to the two closing springs (36), and the two second centrifugal counterweights (37) are respectively fixedly connected to the ends of the two upper opposing closing strips (29) that are away from each other.

5. The TC bearing surfacing equipment according to claim 4, characterized in that: Two outward-extending ear plates (38) are fixedly connected to the telescopic cross bar (13), and the two outward-extending ear plates (38) are fixedly connected to the two connecting springs (20) respectively. Two bosses (39) are fixedly connected to the fitting frame (19), and the two bosses (39) are fixedly connected to the two connecting springs (20) respectively. Guide rods (40) are respectively sleeved in the two connecting springs (20), and the two guide rods (40) are respectively fixedly connected to the two bosses (39). Guide holes are respectively opened on the two outward-extending ear plates (38), and the two guide rods (40) are respectively slidably connected to the two guide holes.

6. The TC bearing surfacing equipment according to claim 5, characterized in that: The electric clamping assembly includes a rotating vertical shaft (41) and a reduction motor (42). The rotating vertical shaft (41) is rotatably connected to the rotating cylinder (6). An electric three-jaw chuck (43) is installed on the rotating vertical shaft (41). The electric three-jaw chuck (43) is used to clamp the TC bearing base (2). The reduction motor (42) is installed in the rotating cylinder (6). A driving bevel gear (44) and a driven bevel gear ring (45) are respectively installed on the output shaft of the reduction motor (42) and the rotating vertical shaft (41). The driving bevel gear (44) and the driven bevel gear ring (45) are meshed with each other.

7. The TC bearing surfacing equipment according to claim 6, characterized in that: The bottom end of the rotating cylinder (6) is fixedly connected to a rotating access disk (46), and the rotating access disk (46) is in rotational cooperation with the middle mounting frame (5). The bottom end of the middle mounting frame (5) is installed with a fixed access disk (47), and a plurality of graphite conductor inner rings (48) and a plurality of annular inner groove cavities (49) are provided in the rotating access disk (46). A plurality of graphite conductor outer rings (50) and a plurality of annular outer groove cavities (51) are provided in the fixed access disk (47). The plurality of graphite conductor inner rings (48) are matched with the plurality of graphite conductor outer rings (50) to form circuit communication, and the plurality of annular inner groove cavities (49) are matched with the plurality of annular outer groove cavities (51) to form gas path communication.

8. The TC bearing surfacing equipment according to claim 7, characterized in that: A bottom mounting plate (52) is fixedly connected to the four corner support frames (3), a plurality of mounting holes (53) are provided on the bottom mounting plate (52), a circular track (54) is fixedly connected to the top mounting frame (4), a fixed half-shell (55) is connected to the circular track (54), and a movable half-shell (56) is rotatably connected to the fixed half-shell (55).

9. A surfacing welding method for TC bearing surfacing equipment, characterized in that: A TC bearing surfacing device according to any one of claims 1 to 8 is used, comprising the following steps: S1. Before operation, the welding machine and gas supply circuit are first installed for the welding gun (1), and the electric clamping assembly, centrifugal follower assembly, electric lifting rod (10), servo motor and supporting circuit of the welding machine are installed. Then, the TC bearing base (2) to be welded is mounted in the electric clamping assembly, and carbide particles are loaded into the material distribution assembly to complete the preparation work before the welded operation. S2. In the static state, the distribution assembly can control the carbide particles loaded therein to form an independent storage, that is, the carbide particles do not form a distribution relative to the TC bearing base (2). Through the meshing transmission action of the driving spur gear (7) and the driven spur gear ring (8), the servo motor is powered on to realize the rotation drive of the rotating cylinder (6). Since the TC bearing base (2) clamped by the electric clamping assembly is set off the center of the circle in the rotating cylinder (6), the TC bearing base (2) will be in a centrifugal force state as a whole when it rotates synchronously with the rotating cylinder (6), and the centrifugal force borne by the TC bearing base (2) is controlled by the rotation speed of the rotating cylinder (6); S3. With the increase of the rotation speed of the rotating drum (6), under the influence of centrifugal force, the welding gun (1) is brought close to the TC bearing base (2), and the material distribution component is matched with the TC bearing base (2). With the further increase of the rotation speed of the rotating drum (6), when the rotating drum (6) enters the working speed, it maintains a uniform speed state, and the material distribution component makes the hard alloy particles inside form material distribution relative to the TC bearing base (2). Under the action of centrifugal force, the hard alloy particles forming material distribution relative to the TC bearing base (2) are attached to the side of the TC bearing base (2) under the action of the relative friction between the two. S4. Finally, the welding machine is powered on to realize the welding operation of the welding gun (1) relative to the TC bearing matrix (2). During the welding operation, the carbide particles attached to the surface of the TC bearing matrix (2) will form adhesion relative to the TC bearing matrix (2) in the welding pool, so as to achieve the surfacing connection of the carbide particles on the surface of the TC bearing matrix (2). During the welding process, the centrifugal force of the welding pool can ensure that the welding pool has a better accumulation effect relative to the TC bearing matrix (2), so as to improve the welding density and ensure the welding quality.

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