Motor casting surface defect repairing device

Abstract

The invention discloses a motor casting surface defect repairing device, and relates to the technical field of casting surface defect repairing, the motor casting surface defect repairing device comprises a workbench and a translation driving mechanism mounted on the workbench, and a welding repairing assembly is mounted on the translation driving mechanism; a plurality of fixing tools used for fixing castings and a transferring mechanism used for transferring the fixing tools to the position below the welding repairing assembly in sequence are arranged on the workbench, and bearing tables are connected between the fixing tools and the transferring mechanism. The arc-shaped pressing plates of the multiple supporting assemblies can stretch out at the same time and tightly abut against the inner wall of the motor end cover casting, the motor end cover casting is stably supported, the stability of the motor end cover casting is improved, and then the welding repair effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of casting surface defect repairing, and in particular to a motor casting surface defect repairing device. Background Art

[0002] Correcting Porosity and Sand Holes in Castings: Methods for addressing porosity and sand hole defects in casting assembly primarily rely on prevention and repair. Preventive measures can reduce the occurrence of porosity and sand holes by optimizing casting process parameters, improving mold quality, and controlling the melting process. For example, ensuring the purity of the molten metal during the melting process and avoiding excessive gas intrusion can effectively reduce porosity formation. Furthermore, improving the design of the gating system to ensure smooth filling of the molten metal into the mold can also help reduce the probability of defects. For repair, existing porosity and sand holes can be repaired using filling materials. For example, specialized repair compounds or welding techniques can be used to fill and reinforce the defective areas to restore the integrity and functionality of the casting. For components requiring high surface quality, machining can be used to remove the surface defect layer, followed by subsequent treatments such as polishing and coating to achieve the desired surface finish.

[0003] During the casting process of motor end covers, sand holes (air holes, slag holes) are common defects. These defects can seriously affect the airtightness, strength, and pressure resistance of the end cover, thereby affecting the performance and life of the motor. Therefore, detecting and repairing sand holes is particularly important.

[0004] When repairing motor end covers with welding, common fixtures cannot fully fit, as these often contain curved bearing chambers and irregularly shaped heat dissipation ribs. Parts of the motor end cover can easily become suspended during the welding process, causing vibration and displacement during welding, which can lead to poor fusion. This can not only result in unsatisfactory repair results but can even cause secondary damage to the end cover. Furthermore, repairing end covers of varying specifications requires frequent tooling changes, significantly impacting welding efficiency.

[0005] In view of the above problems, a device for repairing surface defects of motor castings is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for repairing surface defects of motor castings to solve the above problems.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A device for repairing surface defects of motor castings, comprising a workbench and a translation drive mechanism mounted on the workbench, a welding repair assembly mounted on the translation drive mechanism, a plurality of fixing fixtures for fixing castings and a transfer mechanism for sequentially transferring the plurality of fixing fixtures to a position below the welding repair assembly on the workbench, a receiving platform being connected between the plurality of fixing fixtures and the transfer mechanism, the fixing fixtures comprising a rotating rod, a fixing seat, a support assembly for supporting the inner wall of the casting, a collecting trough for collecting powder generated during welding of the casting, and a support assembly for driving the fixing fixtures. The pneumatic drive component for extending and retracting the support assembly, and the transmission assembly for driving the rotating rod to rotate, the rotating rod is vertically penetrated and arranged at the end of the receiving platform, and the rotating rod is rotatably connected to the receiving platform, the fixed seat and the collection tank are respectively fixedly sleeved on the upper and lower sides of the receiving platform, and a plurality of fixed cylinders are inserted into the side wall of the fixed seat along the circumferential direction, and the support assembly is provided with multiple, and the multiple support assemblies are respectively slidably connected with the multiple fixed cylinders in a one-to-one correspondence, the pneumatic drive component is fixedly installed at the bottom of the rotating rod, and the input end of the pneumatic drive component is respectively connected with the collection tank and the support assembly.

[0008] As a preferred solution of the present invention, the support assembly includes a moving tube, a piston, a first spring and an arc-shaped pressure plate. One end of the fixed tube is fixedly connected to the outer wall of the rotating rod, and the other end extends to the outside of the fixed seat after passing through the fixed seat. The moving tube is axially sealed and slidably connected to the inside of the fixed tube. The piston is fixedly connected to one end of the outside of the moving tube close to the rotating rod, and the piston and the fixed tube are axially sealed and slidably. The first spring is movably sleeved on the outer wall of the moving tube, and the two ends of the first spring are respectively in conflict with the piston and the fixed tube. The arc-shaped pressure plate is fixed to the other end of the moving tube.

[0009] As a preferred solution of the present invention, a cavity is provided inside the arc-shaped pressure plate, a plurality of through holes connected to the cavity are provided on the top of the arc-shaped pressure plate, and a connecting hole for connecting the cavity and the moving tube is provided on the side wall of the arc-shaped pressure plate, an air inlet is provided on the side of the bottom of the moving tube close to the piston, an air guide hole is provided on the side of the bottom of the fixed cylinder away from the rotating rod, the input end of the pneumatic drive component is connected to an input pipe, and the input pipe is connected to the interior of the fixed seat after passing through the rotating rod, a guide groove is provided on the inner wall of the rotating rod, and a plurality of diversion ports for connecting the guide groove and the fixed cylinder are evenly provided on the side wall of the rotating rod in the circumferential direction, and the output end of the pneumatic drive component is connected to the guide groove.

[0010] As a preferred solution of the present invention, a limiting groove connected to the guide groove is provided on the inner top wall of the rotating rod, and a movable tube is axially sealed and slidably connected to the inside of the guide groove. The top of the movable tube extends into the limiting groove, and a sealing plug is fixedly connected to the top of the movable tube. The sealing plug slides axially and sealedly with the inner wall of the limiting groove. A second spring movably connected to the movable tube is provided inside the limiting groove, and the two ends of the second spring respectively conflict with the sealing plug and the inner wall of the rotating rod. The outer wall of the movable tube is sequentially provided with a first exhaust port and a second exhaust port from top to bottom, and a plurality of air outlets are evenly arranged on the outer side wall of the top of the rotating rod in the circumferential direction.

[0011] As a preferred solution of the present invention, all of the first exhaust ports are located above the fixing seat, and all of the first exhaust ports are in a cone shape.

[0012] As a preferred solution of the present invention, the collection trough includes a groove plate and a conical guide plate. The groove plate is fixedly sleeved on the outer wall of the rotating rod and is located below the receiving platform. The conical guide plate is fixed inside the groove plate. A filter screen is fixedly connected between the bottom of the conical guide plate and the inner bottom wall of the groove plate. The filter screen divides the groove plate into a storage chamber and a ventilation chamber. The input end of the pneumatic drive is connected to an air intake pipe through a three-way pipe, and the air intake pipe is connected to the ventilation chamber.

[0013] As a preferred solution of the present invention, the transfer mechanism includes a pan head and a turntable, the pan head is installed at the center position of the top of the workbench, the turntable is installed on the pan head, the transmission assembly is installed inside the turntable, and the transmission assembly passes through the load-bearing platform and is connected to the rotating rod for transmission.

[0014] As a preferred solution of the present invention, the transmission assembly includes a main gear and multiple sub-gears, the main gear is rotatably arranged inside the turntable, and the multiple sub-gears are evenly rotated along the circumferential direction and arranged on the inner wall of the turntable, and the multiple sub-gears are all engaged with the main gear, and the main shafts of all the sub-gears are sleeved with a transmission belt, and the other end of the transmission belt passes through the receiving platform and is movably sleeved with the rotating rod, and a driving motor is also installed on the top of the turntable, and the output shaft of the driving motor is coaxially arranged with the main gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cooperates with a gas drive component and multiple support assemblies. Under the push of gas pressure, the arc-shaped pressure plates of the multiple support assemblies can be extended simultaneously and tightly abutted against the inner wall of the motor end cover casting, thereby stably supporting the motor end cover casting, improving the stability of the motor end cover casting, and thus ensuring the effect of welding repair; 2. By connecting the inlet pipe to the interior of the fixed base, the present invention allows the gas in the internal cavity of the arc-shaped pressure plate to enter the movable pipe through the connecting hole and then enter the interior of the fixed tube through the air inlet. The gas inside the multiple fixed tubes is collected inside the fixed base and then transported to the guide groove through the inlet pipe. As the gas is continuously extracted, a negative pressure is formed inside the cavity, further improving the support stability of the arc-shaped pressure plate and ensuring the fixing effect of the motor end cover casting during the welding repair process, further improving the quality and efficiency of the welding repair. 3. The present invention is provided with a movable tube. When the gas enters the guide groove, the sealing plug is pushed by the gas pressure and moves upward along the limit groove until the position of the first exhaust port moves to be connected with the limit groove, and the second exhaust port moves to be connected with the diversion port. When the first exhaust port is connected with the limit groove, the gas enters the limit groove from the first exhaust port and is discharged through multiple gas outlets, thereby blowing off the impurities generated during welding from the surface of the end cover, avoiding interference of impurities with the welding repair process, and preventing dust and impurities from entering the interior of the end cover from the socket of the end cover casting, ensuring the cleanliness of the socket edge, providing a good operating environment for subsequent repair work, not only improving the repair efficiency, but also effectively ensuring the repair quality, so that the defects on the surface of the motor casting can be repaired accurately and efficiently; 4. The present invention cooperates with the transmission assembly and the rotating rod, and drives the rotating rod to rotate through the transmission assembly, which can drive the fixed seat, the collection tank and the support assembly to rotate, and then drive the motor end cover casting to rotate, making it easier for the welding repair assembly to repair defects at different positions on the surface of the motor end cover casting, thereby improving the efficiency and effect of repairing surface defects of the motor end cover casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] Figure 1 The present invention provides a schematic diagram of the overall structure of a motor casting surface defect repair device; Figure 2 The present invention provides a front structural cross-sectional view of a device for repairing surface defects of motor castings; Figure 3 The present invention provides Figure 2 Cross-sectional view of the connection structure of the fixed tooling; Figure 4 The present invention provides Figure 3 A magnified view of the structure at point A; Figure 5 Provides a structural schematic diagram of a fixed tooling for the present invention; Figure 6 A top structural sectional view of a transmission assembly is provided for the present invention.

[0018] The numbers in the figure represent the following: 1. Workbench; 2. Welding repair assembly; 3. Fixing tool; 4. Transfer mechanism; 5. Receiving platform; 6. Rotating rod; 7. Fixed seat; 8. Support assembly; 9. Collection tank; 10. Pneumatic drive; 11. Transmission assembly; 12. Fixing cylinder; 41. Pan / tilt platform; 42. Turntable; 61. Guide groove; 62. Diverter port; 63. Limiting groove; 64. Movable pipe; 65. Sealing plug; 66. Second spring; 67. First exhaust port; 68. Second exhaust port; 69. Air outlet; 70. Input pipe; 81. Moving pipe; 82. Piston; 83. First spring; 84. Arc-shaped pressure plate; 85. Cavity; 86. Through hole; 87. Connecting hole; 88. Air inlet; 89. Air guide hole; 91. Groove plate; 92. Conical guide plate; 93. Filter; 94. Storage chamber; 95. Ventilation chamber; 96. Inlet pipe; 111. Main gear; 112. Sub-gear; 113. Drive belt. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 - Figure 6As shown, the present invention provides a surface defect repair device for motor castings, comprising a workbench 1 and a translation drive mechanism mounted on the workbench 1, a welding repair assembly 2 mounted on the translation drive mechanism, a plurality of fixing fixtures 3 for fixing the casting and a transfer mechanism 4 for sequentially transferring the plurality of fixing fixtures 3 to the bottom of the welding repair assembly 2 are provided on the workbench 1, a receiving platform 5 is connected between the plurality of fixing fixtures 3 and the transfer mechanism 4, the fixing fixture 3 comprises a rotating rod 6, a fixing seat 7, a support assembly 8 for supporting the inner wall of the casting, a collecting trough 9 for collecting powder generated during the welding repair of the casting, and a receiving platform 5 for receiving the powder generated during the welding repair of the casting. The pneumatic drive member 10 drives the support assembly 8 to extend and retract, and the transmission assembly 11 is used to drive the rotating rod 6 to rotate. The rotating rod 6 is vertically penetrated and arranged at the end of the receiving platform 5, and the rotating rod 6 is rotatably connected to the receiving platform 5. The fixed seat 7 and the collecting tank 9 are respectively fixedly sleeved on the upper and lower sides of the receiving platform 5. A plurality of fixed cylinders 12 are inserted into the side wall of the fixed seat 7 along the circumferential direction. The support assembly 8 is provided with multiple, and the multiple support assemblies 8 are respectively slidably connected with the multiple fixed cylinders 12 in a one-to-one correspondence. The pneumatic drive member 10 is fixedly installed at the bottom of the rotating rod 6, and the input end of the pneumatic drive member 10 is respectively connected with the collecting tank 9 and the support assembly 8.

[0021] The workbench 1 is also provided with a visual inspection system and a control host. The visual inspection system is connected to the control host by signal and is used to transmit inspection information to the control host. The control host is also electrically connected to the welding hopper assembly, the pneumatic drive 10, and the drive motors of the pan / tilt 41 and the transmission assembly 11, respectively, and is used to control the welding repair assembly 2 to cooperate with the surface defects of the motor end cover casting to repair the surface defects of the motor end cover casting according to the inspection information of the visual inspection system. Specifically, when repairing defects, the motor end cover casting is placed on multiple fixed toolings 3 in sequence, and is rotated by the transfer mechanism 4, which drives multiple fixed toolings 3 to rotate, thereby sequentially transferring multiple motor end cover castings to the bottom of the visual inspection system for inspection. When the visual inspection system visually inspects and determines the defects on the surface of the motor end cover casting and determines the location of the defects on the surface of the motor end cover casting, the transfer mechanism 4 rotates and drives the inspected motor end cover casting to rotate to the bottom of the welding repair assembly 2, and performs welding repair on the defects of the motor end cover casting. In order to facilitate the welding repair assembly Part 2 is moved for repair, and the welding repair component 2 can be driven by the translation drive mechanism to move along the X-axis and Y-axis directions above the fixed tooling 3 to improve the flexibility of the welding repair component 2, and in order to facilitate the welding repair work, a grinding component and a lifting component for driving the welding repair component 2 to rise and fall can be configured to improve the efficiency of the welding repair work. It is worth noting that the above-mentioned visual inspection system, welding repair component 2 and the matching grinding component and lifting component are all existing technologies, or any mechanism and equipment in the existing technology that can realize this function, and its working principle will not be described in detail here.

[0022] Furthermore, when welding and repairing the end cover casting, since the end cover usually contains a curved bearing chamber and special-shaped heat dissipation ribs, the general clamp cannot fit it completely. During the welding process, the motor end cover is easily partially suspended, resulting in vibration displacement during welding, which in turn causes poor fusion. Therefore, before welding, the motor end cover needs to be fixed, and the end cover casting is placed on the fixing seat 7, and the socket in the middle of the end cover is passed through the rotating rod 6. Then, the inner wall of the motor end cover casting is supported by the support assembly 8 on the fixed tooling 3. At the same time, the pneumatic drive 10 works, and its input end extracts the gas inside the collection tank 9, so that the collection tank 9 generates adsorption force, and transports gas to the inside of the fixed cylinder 12, thereby driving the support assembly 8 to extend the fixed cylinder 12, and then the inner wall of the motor end cover casting is supported by multiple support assemblies 8, thereby achieving the fixation of the motor end cover casting. To avoid partial suspension of the motor end cover casting during welding, thereby avoiding vibration displacement during welding and causing poor fusion, when the pneumatic drive component 10 is working, the negative pressure it generates draws internal gas through the collection tank 9, so that adsorption force is formed inside the collection tank 9, which can collect the powder generated during welding, avoid powder splashing, and improve the cleanliness of the welding repair working environment. At the same time, the transmission component 11 drives the rotating rod 6 to rotate, which can drive the fixed seat 7, the collection tank 9 and the support component 8 to rotate, and then drive the motor end cover casting to rotate, so that the welding repair component 2 can repair defects at different positions on the surface of the motor end cover casting, thereby improving the efficiency and effect of repairing surface defects of the motor end cover casting.

[0023] Specifically, the support assembly 8 includes a moving tube 81, a piston 82, a first spring 83 and an arc-shaped pressure plate 84. One end of the fixed tube 12 is fixedly connected to the outer wall of the rotating rod 6, and the other end extends to the outside of the fixed seat 7 after passing through the fixed seat 7. The moving tube 81 is axially sealed and slidably connected to the inside of the fixed tube 12, and the piston 82 is fixedly connected to the outside of the moving tube 81 near one end of the rotating rod 6, and the piston 82 and the fixed tube 12 are axially sealed and slidably. The first spring 83 is movably sleeved on the outer wall of the moving tube 81, and the two ends of the first spring 83 respectively conflict with the piston 82 and the fixed tube 12, and the arc-shaped pressure plate 84 is fixed to the other end of the moving tube 81.

[0024] The collecting trough 9 includes a groove plate 91 and a conical guide plate 92. The groove plate 91 is fixedly mounted on the outer wall of the rotating rod 6 and is located below the receiving platform 5. The conical guide plate 92 is fixed inside the groove plate 91. A filter screen 93 is fixedly connected between the bottom of the conical guide plate 92 and the inner bottom wall of the groove plate 91. The filter screen 93 divides the groove plate 91 into a storage chamber 94 and a ventilation chamber 95. The input end of the pneumatic drive 10 is connected to an air intake pipe 96 through a three-way pipe, and the air intake pipe 96 is connected to the ventilation chamber 95.

[0025] When the pneumatic drive 10 is working, it extracts the gas in the ventilation chamber 95 through the air inlet pipe 96, so that a negative pressure is formed in the ventilation chamber 95, so that an adsorption force is formed inside the collection tank 9. Then, through the cooperation of the conical guide plate 92 and the filter screen 93, the powder generated during welding can be guided into the storage chamber 94 through the conical guide plate 92 and filtered through the filter screen 93 to prevent the powder from entering the ventilation chamber 95.

[0026] Furthermore, the input end of the pneumatic drive component 10 is connected to an input pipe 70, which passes through the rotating rod 6 and is connected to the interior of the fixed seat 7. A guide groove 61 is provided on the inner wall of the rotating rod 6, and a plurality of diversion ports 62 for connecting the guide groove 61 and the fixed cylinder 12 are evenly provided on the side wall of the rotating rod 6 along the circumferential direction. The output end of the pneumatic drive component 10 is connected to the guide groove 61.

[0027] When the pneumatic drive 10 is working, the gas inside the collection tank 9 is extracted through the air inlet pipe 96, and the gas is transported to the guide groove 61 through the output end, and then transported to the inside of multiple fixed cylinders 12 through multiple diversion ports 62. When the gas enters the inside of the fixed cylinder 12, it can push the piston 82 inside the fixed cylinder 12 to move along the inside of the fixed cylinder 12, thereby driving the moving tube 81 and the arc-shaped pressure plate 84 to move toward the outside of the fixed seat 7. When the moving tube 81 moves, it squeezes the first spring 83 for compression. Under the push of gas pressure, the arc-shaped pressure plates 84 of multiple support assemblies 8 are extended at the same time and tightly contact the inner wall of the motor end cover casting, stably supporting the motor end cover casting, improving the stability of the motor end cover casting, and thus ensuring the effect of welding repair. In addition, when the welding repair is completed, the pneumatic drive component 10 stops working. At this time, the first spring 83 restores its elastic deformation, pushing the piston 82 and the moving tube 81 to move toward the inside of the fixed cylinder 12, thereby driving the arc-shaped pressure plate 84 to separate from the inner wall of the motor end cover casting, making it easy to remove the motor end cover casting, the operation is simple and quick, and the work efficiency is improved.

[0028] A cavity 85 is provided inside the arc-shaped pressure plate 84, and a plurality of through holes 86 communicating with the cavity 85 are provided on the top of the arc-shaped pressure plate 84. A connecting hole 87 for connecting the cavity 85 and the moving tube 81 is provided on the side wall of the arc-shaped pressure plate 84. An air inlet 88 is provided on the side of the bottom of the moving tube 81 close to the piston 82, and an air guide hole 89 is provided on the side of the bottom of the fixed cylinder 12 away from the rotating rod 6.

[0029] When the end cover casting is placed on the fixed seat 7, its inner top wall contacts the top of the arc-shaped pressure plate 84 and closes the through hole 86 on the top of the arc-shaped pressure plate 84. When the pneumatic drive 10 is working, the input pipe 70 connected to its input end is connected to the interior of the fixed seat 7. At this time, since the through hole 86 is closed, the gas inside the cavity 85 can only enter the moving tube 81 through the connecting hole 87 and enter the interior of the fixed cylinder 12 through the air inlet 88. The gas inside the multiple fixed cylinders 12 is collected inside the fixed seat 7 and then transported to the guide groove 61 through the input pipe 70. As the gas is continuously extracted, a negative pressure is formed inside the cavity 85, so that the inner top wall of the motor end cover casting is firmly adsorbed, thereby further improving the support stability of the arc-shaped pressure plate 84 and ensuring the fixing effect of the motor end cover casting during the welding repair process, further improving the quality and efficiency of the welding repair.

[0030] A limiting groove 63 connected to the guide groove 61 is provided on the inner top wall of the rotating rod 6, and a movable tube 64 is axially sealed and slidably connected inside the guide groove 61. The top of the movable tube 64 extends into the limiting groove 63, and a sealing plug 65 is fixedly connected to the top of the movable tube 64. The sealing plug 65 slides axially and sealedly with the inner wall of the limiting groove 63. A second spring 66 movably connected to the movable tube 64 is provided inside the limiting groove 63, and the two ends of the second spring 66 respectively conflict with the sealing plug 65 and the inner wall of the rotating rod 6. The outer wall of the movable tube 64 is provided with a first exhaust port 67 and a second exhaust port 68 from top to bottom, and a plurality of air outlets 69 are evenly arranged on the outer side wall of the top of the rotating rod 6 in the circumferential direction.

[0031] A movable tube 64 is provided in the guide groove 61 inside the rotating rod 6, and a sealing plug 65 is fixedly connected to the top of the movable tube 64. In the initial state, the movable tube 64 is slidingly and sealingly connected to the inner wall of the guide groove 61, and is elastically supported by the second spring 66, so that the first exhaust port 67 and the second exhaust port 68 on the inner wall of the movable tube 64 are closed. When the gas enters the inside of the guide groove 61, the sealing plug 65 is pushed by the gas pressure and moves upward along the limit groove 63 until the position of the first exhaust port 67 moves to communicate with the limit groove 63, and the second exhaust port 68 moves to communicate with the diversion port 62. When the first exhaust port 67 is connected with the limit groove 63, the gas enters the limit groove 63 from the first exhaust port 67 and is discharged through multiple gas outlets 69, thereby blowing impurities generated during welding off the surface of the end cover, avoiding interference of impurities with the welding repair process, and preventing dust and impurities from entering the end cover from the socket of the end cover casting, ensuring the cleanliness of the socket edge, and providing a good operating environment for subsequent repair work. It not only improves the repair efficiency, but also effectively guarantees the repair quality, allowing defects on the surface of motor castings to be repaired accurately and efficiently.

[0032] All first exhaust ports 67 are located above the mounting base 7 and are tapered. The tapered design facilitates smoother gas discharge, reduces resistance during the exhaust process, and improves gas discharge efficiency. Furthermore, the tapered shape of the exhaust ports provides a certain degree of guidance, allowing for diffuse gas discharge, increasing the discharge area and ensuring that the gas accurately blows off impurities and cleans the edges of the socket, further enhancing the cleaning effect on the end cap surface.

[0033] The transfer mechanism 4 includes a platform 41 and a turntable 42. The platform 41 is installed at the top center of the workbench 1, the turntable 42 is installed on the platform 41, and the transmission component 11 is installed inside the turntable 42. The transmission component 11 passes through the load-bearing platform and is connected to the rotating rod 6 for transmission.

[0034] The transmission assembly 11 includes a main gear 111 and multiple sub gears 112. The main gear 111 is rotatably arranged inside the turntable 42. The multiple sub gears 112 are evenly rotated along the circumferential direction and are arranged on the inner wall of the turntable 42. The multiple sub gears 112 are all engaged with the main gear 111. A transmission belt 113 is sleeved on the main shaft of all sub gears 112, and the other end of the transmission belt 113 passes through the receiving platform 5 and is movably sleeved on the rotating rod 6. A driving motor is also installed on the top of the turntable 42, and the output shaft of the driving motor is coaxially arranged with the main gear 111.

[0035] When the drive motor starts, its output shaft drives the main gear 111 to rotate. Since the main gear 111 is meshed with multiple sub-gears 112, the rotation of the main gear 111 drives all sub-gears 112 to rotate synchronously. The transmission belt 113 mounted on the main shaft of these sub-gears 112 also rotates accordingly, thereby transmitting the rotational power to the rotating rod 6 and driving the rotating rod 6 to rotate. By driving the rotating rod 6 to rotate through the transmission component 11, the fixed seat 7, the collection tank 9 and the support component 8 can be driven to rotate, thereby driving the motor end cover casting to rotate, making it easier for the welding repair component 2 to repair defects at different positions on the surface of the motor end cover casting, thereby improving the efficiency and effectiveness of repairing surface defects of the motor end cover casting.

[0036] The scope of protection of the application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A motor casting surface defect repair device, comprising a workbench (1) and a translation drive mechanism mounted on the workbench (1), wherein a welding repair component (2) is mounted on the translation drive mechanism, characterized in that: The workbench (1) is provided with a plurality of fixing fixtures (3) for fixing the casting and a transfer mechanism (4) for sequentially transferring the plurality of fixing fixtures (3) to the bottom of the welding repair assembly (2). A receiving platform (5) is connected between the plurality of fixing fixtures (3) and the transfer mechanism (4). The fixing fixture (3) includes a rotating rod (6), a fixing seat (7), a support assembly (8) for supporting the inner wall of the casting, a collecting trough (9) for collecting powder generated during the welding repair of the casting, and a pneumatic drive member (10) for driving the support assembly (8) to extend and retract, and a transmission assembly (11) for driving the rotating rod (6) to rotate. The rotating rod (6) is vertically penetrated and arranged at the end of the receiving platform (5), and the rotating rod (6) is rotatably connected to the receiving platform (5). The fixed seat (7) and the collecting tank (9) are respectively fixedly sleeved on the upper and lower sides of the receiving platform (5). The side wall of the fixed seat (7) is provided with a plurality of fixed cylinders (12) along the circumferential direction. The supporting assembly (8) is provided with a plurality of them, and the plurality of supporting assemblies (8) are respectively slidably connected with the plurality of fixed cylinders (12) in a one-to-one correspondence. The pneumatic driving member (10) is fixedly installed at the bottom of the rotating rod (6), and the input end of the pneumatic driving member (10) is respectively communicated with the collecting tank (9) and the supporting assembly (8).

2. The surface defect repairing device for motor castings according to claim 1, characterized in that: The support assembly (8) includes a moving tube (81), a piston (82), a first spring (83) and an arc-shaped pressure plate (84). One end of the fixed tube (12) is fixedly connected to the outer wall of the rotating rod (6), and the other end extends to the outside of the fixed seat (7) after passing through the fixed seat (7). The moving tube (81) is axially sealed and slidably connected to the inside of the fixed tube (12). The piston (82) is fixedly connected to one end of the outside of the moving tube (81) close to the rotating rod (6), and the piston (82) and the fixed tube (12) are axially sealed and slidably connected. The first spring (83) is movably sleeved on the outer wall of the moving tube (81), and the two ends of the first spring (83) are respectively in conflict with the piston (82) and the fixed tube (12). The arc-shaped pressure plate (84) is fixed to the other end of the moving tube (81).

3. The surface defect repairing device for motor castings according to claim 2, characterized in that: A cavity (85) is provided inside the arc-shaped pressure plate (84), a plurality of through holes (86) communicating with the cavity (85) are provided on the top of the arc-shaped pressure plate (84), and a connecting hole (87) for connecting the cavity (85) and the moving tube (81) is provided on the side wall of the arc-shaped pressure plate (84), an air inlet (88) is provided on the side of the bottom of the moving tube (81) close to the piston (82), and a gas inlet (88) is provided on the side of the bottom of the fixed cylinder (12) away from the rotating rod (6). An air guide hole (89) is provided, and the input end of the pneumatic driving member (10) is connected to an input pipe (70), and the input pipe (70) passes through the rotating rod (6) and is communicated with the interior of the fixed seat (7), and a guide groove (61) is provided on the inner wall of the rotating rod (6), and a plurality of diversion ports (62) for communicating with the guide groove (61) and the fixed cylinder (12) are uniformly provided on the side wall of the rotating rod (6) along the circumferential direction, and the output end of the pneumatic driving member (10) is communicated with the guide groove (61).

4. The surface defect repairing device for motor castings according to claim 3, characterized in that: A limiting groove (63) communicating with the guide groove (61) is provided on the inner top wall of the rotating rod (6), and a movable tube (64) is axially sealed and slidably connected inside the guide groove (61). The top of the movable tube (64) extends into the limiting groove (63), and a sealing plug (65) is fixedly connected to the top of the movable tube (64). The sealing plug (65) slides axially and seals with the inner wall of the limiting groove (63). A second spring (66) movably sleeved with the movable tube (64) is provided inside the limiting groove (63), and the two ends of the second spring (66) respectively contact the sealing plug (65) and the inner wall of the rotating rod (6). The outer wall of the movable tube (64) is sequentially provided with a first exhaust port (67) and a second exhaust port (68) from top to bottom, and a plurality of air outlets (69) are uniformly provided on the outer side wall of the top of the rotating rod (6) along the circumferential direction.

5. The surface defect repairing device for motor castings according to claim 4, characterized in that: All of the first exhaust ports (67) are located above the fixing seat (7), and all of the first exhaust ports (67) are in a cone shape.

6. The motor casting surface defect repairing device according to claim 1, characterized in that: The collecting trough (9) comprises a groove plate (91) and a conical guide plate (92), wherein the groove plate (91) is fixedly sleeved on the outer wall of the rotating rod (6) and is located below the receiving platform (5), and the conical guide plate (92) is fixed inside the groove plate (91), and a filter screen (93) is fixedly connected between the bottom of the conical guide plate (92) and the inner bottom wall of the groove plate (91), and the filter screen (93) divides the groove plate (91) into a storage chamber (94) and a ventilation chamber (95), and the input end of the pneumatic drive member (10) is connected to an air intake pipe (96) through a three-way pipe, and the air intake pipe (96) is communicated with the ventilation chamber (95).

7. The motor casting surface defect repairing device according to claim 1, characterized in that: The transfer mechanism (4) comprises a platform (41) and a turntable (42), wherein the platform (41) is mounted at the top center of the workbench (1), the turntable (42) is mounted on the platform (41), and the transmission assembly (11) is mounted inside the turntable (42). The transmission assembly (11) passes through the load-bearing platform and is connected to the rotating rod (6) in a transmission manner.

8. The motor casting surface defect repairing device according to claim 7, characterized in that: The transmission assembly (11) includes a main gear (111) and a plurality of sub-gears (112), wherein the main gear (111) is rotatably arranged inside the turntable (42), and the plurality of sub-gears (112) are uniformly rotatably arranged on the inner wall of the turntable (42) along the circumferential direction, and the plurality of sub-gears (112) are all meshed with the main gear (111), and a transmission belt (113) is sleeved on the main shaft of all the sub-gears (112), and the other end of the transmission belt (113) passes through the receiving platform (5) and is movably sleeved on the rotating rod (6), and a driving motor is also installed on the top of the turntable (42), and the output shaft of the driving motor is coaxially arranged with the main gear (111).

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