A motor casting surface defect repairing device

Abstract

The application discloses a motor casting surface defect repairing device and relates to the technical field of casting surface defect repairing. The device comprises a workbench, a translation driving mechanism installed on the workbench, a welding repairing assembly installed on the translation driving mechanism, a plurality of fixing tools for fixing castings and a transfer mechanism for sequentially transferring the plurality of fixing tools to the lower side of the welding repairing assembly, and connecting tables are arranged between the plurality of fixing tools and the transfer mechanism. The arc-shaped abutting plates of the plurality of supporting assemblies can be simultaneously extended and tightly abut on the inner wall of the motor end cover casting under the driving of the gas pressure, so that the motor end cover casting is stably supported, the stability of the motor end cover casting is improved, and the welding repairing effect is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting surface defect repair, and particularly relates to a motor casting surface defect repair device. BACKGROUND

[0002] Correction of casting porosity and sand hole defects: The method for handling porosity and sand hole defects in casting assembly mainly relies on two aspects of prevention and repair. In the prevention aspect, the generation of porosity and sand hole can be reduced by optimizing the casting process parameters, improving the mold quality and controlling the smelting process. For example, ensuring the purity of the metal liquid during the smelting process can effectively reduce the formation of porosity. In addition, improving the design of the pouring system to make the metal liquid fill the mold smoothly also helps to reduce the probability of defect occurrence. In the repair aspect, for the porosity and sand hole that have already appeared, a filling material can be used for repair. For example, a special repair agent or welding technology is used to fill and reinforce the defect site to restore the integrity and functionality of the casting. For some parts with high requirements for surface quality, the surface defect layer can also be removed by mechanical processing, and then subsequent processing such as polishing and coating is carried out to achieve the required surface finish.

[0003] In the process of casting motor end cover, sand hole (porosity, slag hole) is a common defect. These defects can seriously affect the air tightness, strength and pressure resistance of the end cover, and thus affect the performance and service life of the motor. Therefore, it is particularly important to detect and repair the sand hole.

[0004] When welding the motor end cover, the universal fixture cannot completely fit due to the fact that the end cover usually contains a curved bearing chamber and a special-shaped heat dissipation rib. During the welding process, the motor end cover is prone to be suspended locally, which causes vibration displacement during welding and thus causes poor fusion. This not only may result in unsatisfactory repair effect, but also may cause secondary damage to the end cover. In addition, different specifications of end covers need to be frequently replaced during repair, which also greatly affects the welding efficiency.

[0005] In view of the above problems, a motor casting surface defect repair device is provided. SUMMARY

[0006] The present application aims to provide a motor casting surface defect repair device to solve the above problems.

[0007] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0008] The utility model provides a motor casting surface defect repairing device, including work table and the translation drive mechanism of installation on work table, welding repair assembly is installed on the translation drive mechanism, be provided with a plurality of fixed tool for fixing casting and the transfer mechanism for transferring a plurality of fixed tool to the below of welding repair assembly in order on the work table, a plurality of fixed tool and transfer mechanism are all connected with the receiving station between, the fixed tool includes rotary lever, fixed seat, is used for the support component of the inner wall of casting resistance support, is used for the collection groove of the powder of generating when casting welding repair, and is used for the pneumatic drive spare of driving support component telescopic, and the transmission assembly for driving rotary lever rotation, rotary lever is vertically through the setting in receiving station end, and rotary lever is rotationally connected with receiving station, the fixed seat and collection groove are fixedly sheathed on the upper and lower sides of receiving station respectively, the side wall of fixed seat is inserted with a plurality of fixed cylinders along the circumferential direction, the support component is provided with a plurality of, a plurality of support components are slidably connected with a plurality of fixed cylinders one by one respectively, the pneumatic drive spare is fixedly installed at the bottom of rotary lever, and the input end of pneumatic drive spare is communicated with collection groove and support component respectively.

[0009] As a preferred scheme of the utility model, the support component includes a moving tube, a piston, a first spring, and an arc-shaped pressing plate, one end of the fixed cylinder is fixedly connected with the outer wall of the rotary lever, the other end extends to the outside of the fixed seat after penetrating the fixed seat, the moving tube is axially and sealingly connected inside the fixed cylinder, the piston is fixedly connected at one end of the moving tube outside, and the piston axially and sealingly slides with the fixed cylinder, the first spring is movably sleeved on the outer wall of the moving tube, and the two ends of the first spring are respectively abutted with the piston and the fixed cylinder, and the arc-shaped pressing plate is fixed at the other end of the moving tube.

[0010] As a preferred scheme of the utility model, a cavity is formed in the arc-shaped pressing plate, a plurality of through holes are formed in the top of the arc-shaped pressing plate and communicated with the cavity, a connecting hole is formed in the side wall of the arc-shaped pressing plate and used for connecting the cavity and the moving tube, an air inlet is formed in the bottom of the moving tube and close to the piston, a gas guide hole is formed in the bottom of the fixed cylinder and away from the rotary lever, an input pipe is connected with the input end of the pneumatic drive spare, the input pipe penetrates the rotary lever and is communicated with the inside of the fixed seat, a guide groove is formed in the inner wall of the rotary lever, a plurality of shunt ports are uniformly formed in the side wall of the rotary lever along the circumferential direction and used for connecting the guide groove and the fixed cylinder, and the output end of the pneumatic drive spare is communicated with the guide groove.

[0011] As a preferred scheme of the present application, a limiting groove in communication with the guide groove is formed in the inner top wall of the rotating rod, an active pipe is axially and sealingly connected in the guide groove, the active pipe top extends into the limiting groove, a sealing plug is fixedly connected to the active pipe top, the sealing plug axially and sealingly slides with the inner wall of the limiting groove, a second spring is arranged in the limiting groove and movably sleeved with the active pipe, the two ends of the second spring abut against the sealing plug and the inner wall of the rotating rod respectively, a first exhaust port and a second exhaust port are sequentially formed in the outer wall of the active pipe from top to bottom, and a plurality of gas outlets are uniformly formed in the outer side wall of the rotating rod top in the circumferential direction.

[0012] As a preferred scheme of the present application, all the first exhaust ports are located above the fixed seat, and all the first exhaust ports are conical.

[0013] As a preferred scheme of the present application, the collecting groove comprises a groove plate and a conical flow guide plate, the groove plate is fixedly sleeved on the outer wall of the rotating rod and located below the receiving table, the conical flow guide plate is fixed in the groove plate, a filter screen is fixedly connected between the bottom of the conical flow guide plate and the inner bottom wall of the groove plate, the filter screen separates the inner groove plate into a storage cavity and a ventilation cavity, and the input end of the gas pressure driving element is connected with an air inlet pipe through a three-way pipe, and the air inlet pipe is in communication with the ventilation cavity.

[0014] As a preferred scheme of the present application, the transfer mechanism comprises a holder and a rotating disc, the holder is installed at the center position of the top of the workbench, the rotating disc is installed on the holder, the transmission assembly is installed in the rotating disc, and the transmission assembly penetrates through the back of the bearing table and is in transmission connection with the rotating rod.

[0015] As a preferred scheme of the present application, the transmission assembly comprises a main gear and a plurality of auxiliary gears, the main gear is rotationally arranged in the rotating disc, the plurality of auxiliary gears are uniformly rotationally arranged on the inner wall of the rotating disc in the circumferential direction, and the plurality of auxiliary gears are in engagement with the main gear, a transmission belt is sleeved on the main shaft of all the auxiliary gears, and the other end of the transmission belt penetrates through the back of the receiving table and is movably sleeved with the rotating rod, and a driving motor is further installed on the top of the rotating disc, and the output shaft of the driving motor is coaxially arranged with the main gear.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The gas driving element and the plurality of supporting assemblies are matched, under the pushing of the gas pressure, the arc-shaped abutting plates of the plurality of supporting assemblies can be simultaneously extended 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 the welding repair effect is ensured.

[0018] 2、The present application communicates the input pipe with the inside of the fixed seat, so that the gas in the internal cavity of the arc-shaped pressing plate enters the moving pipe through the connecting hole and enters the inside of the fixed cylinder through the gas inlet. The gas in the inside of the fixed cylinder is collected in the inside of the fixed seat and then transported to the guide groove through the input pipe. With the continuous extraction of the gas, negative pressure is formed in the cavity, which further improves the support stability of the arc-shaped pressing plate and ensures the fixing effect of the motor end cover casting during the welding repair process, thereby further improving the quality and efficiency of the welding repair;

[0019] 3、The present application is provided with a movable pipe. When the gas enters the inside of the guide groove, the sealing plug is pushed to move upward along the limiting groove under the push of the gas pressure until the position of the first exhaust port moves to communicate with the limiting groove, and the second exhaust port moves to communicate with the shunt. When the first exhaust port communicates with the limiting groove, the gas enters the limiting groove from the first exhaust port and is discharged through the plurality of gas outlets, thereby blowing off the impurities generated during welding from the surface of the end cover, avoiding the interference of the impurities on the welding repair process, preventing dust and impurities from entering the inside 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 the subsequent repair work, improving the repair efficiency, effectively guaranteeing the repair quality, and accurately and efficiently repairing the defects on the surface of the motor casting;

[0020] 4、The present application is provided with a transmission assembly and a rotating rod. The transmission assembly drives the rotating rod to rotate, which can drive the fixed seat, the collecting groove and the support assembly to rotate, thereby driving the motor end cover casting to rotate, so as to facilitate the welding repair assembly to repair the defects at different positions on the surface of the motor end cover casting, improve the efficiency and effect of the repair of the defects on the surface of the motor end cover casting. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0022] Figure 1 The present application provides a kind of overall structure schematic diagram of motor casting surface defect repair device;

[0023] Figure 2 The present application provides a kind of front view structure sectional view of motor casting surface defect repair device;

[0024] Figure 3 The present application provides Figure 2 The connecting structure sectional view of fixed tool in the present application;

[0025] Figure 4 The structure of the fixing tool is shown in the figure. Figure 3 The structure of the fixing tool is shown in the figure.

[0026] Figure 5 The structure of the fixing tool is shown in the figure.

[0027] Figure 6 The structure of the fixing tool is shown in the figure.

[0028] The reference signs in the figure respectively represent the following:

[0029] 1, workbench; 2, welding repair assembly; 3, fixing tool; 4, transfer mechanism; 5, receiving table; 6, rotating rod; 7, fixing seat; 8, supporting assembly; 9, collecting groove; 10, air pressure driving piece; 11, transmission assembly; 12, fixing cylinder;

[0030] 41, holder; 42, rotating disc; 61, guide groove; 62, shunt; 63, limiting groove; 64, movable pipe; 65, sealing plug; 66, second spring; 67, first exhaust port; 68, second exhaust port; 69, gas outlet; 70, input pipe; 81, moving pipe; 82, piston; 83, first spring; 84, arc-shaped pressing plate; 85, cavity; 86, through hole; 87, connecting hole; 88, air inlet; 89, air guide hole; 91, recessed plate; 92, conical guide plate; 93, filter screen; 94, storage cavity; 95, air exchange cavity; 96, air inlet pipe; 111, main gear; 112, auxiliary gear; 113, transmission belt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] As Figure 1 - Figure 6As shown, the motor casting surface defect repairing device provided by the application comprises a workbench 1, a translation driving mechanism installed on the workbench 1, a welding repairing assembly 2 installed on the translation driving mechanism, a plurality of fixing tools 3 for fixing castings and a transfer mechanism 4 for transferring the plurality of fixing tools 3 to the lower side of the welding repairing assembly 2 in turn are arranged on the workbench 1, a plurality of receiving tables 5 are connected between the fixing tools 3 and the transfer mechanism 4, the fixing tool 3 comprises a rotating rod 6, a fixing seat 7, a supporting assembly 8 for supporting the inner wall of the casting, a collecting groove 9 for collecting the powder generated during the welding repair of the casting, a pneumatic driving part 10 for driving the supporting 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 arranged at the end of the receiving table 5 and is rotationally connected with the receiving table 5, the fixing seat 7 and the collecting groove 9 are fixedly arranged on the upper and lower sides of the receiving table 5 respectively, a plurality of fixing cylinders 12 are inserted into the side wall of the fixing seat 7 in the circumferential direction, a plurality of supporting assemblies 8 are arranged, the plurality of supporting assemblies 8 are slidingly connected with the plurality of fixing cylinders 12 one by one, the pneumatic driving part 10 is fixedly installed at the bottom of the rotating rod 6, and the input end of the pneumatic driving part 10 is in communication with the collecting groove 9 and the supporting assembly 8 respectively.

[0033] A visual detection system and a control host are further arranged on the workbench 1, the visual detection system is signal connected with the control host, is used for conveying detection information to the control host, and the control host is electrically connected with the welding repairing assembly, the pneumatic driving part 10, and the driving motor of the transmission assembly 11 and the holder 41, is used for controlling the welding repairing assembly 2 to repair the surface defects of the motor end cover casting according to the detection information of the visual detection system.

[0034] Specifically, when the defects are repaired, the motor end cover castings are placed on the plurality of fixing tools 3 in turn, are transferred by the transfer mechanism 4, and drive the plurality of fixing tools 3 to rotate, so as to transfer the plurality of motor end cover castings to the lower side of the visual detection system in turn for detection, when the visual detection system visually detects and determines the position of the surface defects of the motor end cover casting, the transfer mechanism 4 rotates and drives the detected motor end cover casting to rotate to the lower side of the welding repairing assembly 2, and the defects of the motor end cover casting are repaired by welding, in order to facilitate the movement of the welding repairing assembly 2, the welding repairing assembly 2 can be driven by the translation driving mechanism to move along the X-axis and Y-axis directions above the fixing tool 3, so as to improve the flexibility of the welding repairing assembly 2, and in order to facilitate the welding repair work, a polishing assembly and a lifting assembly for driving the welding repairing assembly 2 to ascend and descend can be configured, so as to improve the efficiency of the welding repair work, it is worth noting that the above-mentioned visual detection system, welding repairing assembly 2, and the matching polishing assembly and lifting assembly are all prior art, or any mechanism and device capable of realizing the function in the prior art can be used, and the working principle thereof will not be described in detail here.

[0035] Further, when welding the end cover casting, the general fixture cannot completely fit due to the curved bearing chamber and the special-shaped heat dissipation ribs in the end cover. During the welding repair process, the motor end cover is easily suspended locally, causing vibration displacement during welding, and thus causing poor fusion. Therefore, before welding, the motor end cover needs to be fixed, the end cover casting is placed on the fixed seat 7, and the socket in the middle of the end cover is inserted 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 tool 3. At the same time, the gas pressure driving part 10 works, its input end extracts the gas inside the collection groove 9, so that the suction force is generated inside the collection groove 9, and the gas is delivered to the inside of the fixed cylinder 12, so that the support assembly 8 can be driven to extend out of the fixed cylinder 12, and then the inner wall of the motor end cover casting is supported by the plurality of support assemblies 8, so as to fix the motor end cover casting, avoid the local suspension of the motor end cover casting during welding, and thus avoid the situation that the vibration displacement during welding causes poor fusion. When the gas pressure driving part 10 works, the negative pressure generated by the gas pressure driving part 10 extracts the gas inside the collection groove 9, so that the suction force is generated inside the collection groove 9, and the powder generated during welding can be collected, so as to avoid the splashing of the powder, improve the cleanliness of the welding repair working environment, and at the same time, the rotating rod 6 is driven to rotate by the transmission assembly 11, so as to drive the fixed seat 7, the collection groove 9 and the support assembly 8 to rotate, and then drive the motor end cover casting to rotate, so as to facilitate the welding repair assembly 2 to repair the defects at different positions on the surface of the motor end cover casting, and improve the efficiency and effect of the surface defect repair of the motor end cover casting.

[0036] Specifically, the support assembly 8 includes a moving pipe 81, a piston 82, a first spring 83 and an arc-shaped pressing plate 84. One end of the fixed cylinder 12 is fixedly connected with the outer wall of the rotating rod 6, and the other end extends to the outside of the fixed seat 7 after penetrating through the fixed seat 7. The moving pipe 81 is axially and sealingly connected in the fixed cylinder 12. The piston 82 is fixedly connected to one end of the moving pipe 81 outside the rotating rod 6, and the piston 82 is axially and sealingly connected with the fixed cylinder 12. The first spring 83 is movably sleeved on the outer wall of the moving pipe 81, and the two ends of the first spring 83 are respectively in contact with the piston 82 and the fixed cylinder 12. The arc-shaped pressing plate 84 is fixed to the other end of the moving pipe 81.

[0037] The collection groove 9 includes a recessed groove plate 91 and a conical flow guide plate 92. The recessed groove plate 91 is fixedly sleeved on the outer wall of the rotating rod 6 and located below the receiving table 5. The conical flow guide plate 92 is fixed in the recessed groove plate 91. The filter screen 93 is fixedly connected between the bottom of the conical flow guide plate 92 and the inner bottom wall of the recessed groove plate 91. The filter screen 93 divides the recessed groove plate 91 into a storage cavity 94 and a gas exchange cavity 95. The input end of the gas pressure driving part 10 is connected with an air inlet pipe 96 through a three-way pipe. The air inlet pipe 96 is in communication with the gas exchange cavity 95.

[0038] When the gas pressure driving part 10 works, it extracts the gas in the air exchange cavity 95 through the air inlet pipe 96, forms a negative pressure in the air exchange cavity 95, so that the adsorption force is formed in the collecting groove 9, and then the powder generated during welding is guided to the storage cavity 94 through the tapered flow guide plate 92 and filtered through the filter screen 93, so that the powder is prevented from entering the air exchange cavity 95.

[0039] Further, the input end of the gas pressure driving part 10 is connected with the input pipe 70, the input pipe 70 penetrates the rotating rod 6 and communicates with the inside of the fixed seat 7, the inner wall of the rotating rod 6 is provided with a guide groove 61, and a plurality of shunt openings 62 for communicating the guide groove 61 and the fixed cylinder 12 are uniformly arranged on the side wall of the rotating rod 6 in the circumferential direction, and the output end of the gas pressure driving part 10 communicates with the guide groove 61.

[0040] When the gas pressure driving part 10 works, the gas in the collecting groove 9 is extracted through the air inlet pipe 96, and then the gas is transported into the guide groove 61 through the output end, and then transported into the inside of the fixed cylinder 12 through the plurality of shunt openings 62, so that the piston 82 in the inside of the fixed cylinder 12 is pushed to move along the inside of the fixed cylinder 12, thereby driving the moving pipe 81 and the arc-shaped pressing plate 84 to move towards the outside of the fixed seat 7, the moving pipe 81 is compressed when moving to extrude the first spring 83, and under the pushing of the gas pressure, the arc-shaped pressing plate 84 of the plurality of supporting assemblies 8 is simultaneously stretched out and tightly abuts against the inner wall of the motor end cover casting, so as to stably support the motor end cover casting and improve the stability of the motor end cover casting, thereby ensuring the welding repair effect. In addition, when the welding repair is completed, the gas pressure driving part 10 stops working, at this time, the first spring 83 restores the elastic deformation, pushes the piston 82 and the moving pipe 81 to move towards the inside of the fixed cylinder 12, thereby driving the arc-shaped pressing plate 84 to separate from the inner wall of the motor end cover casting, so as to facilitate the motor end cover casting to be taken down, the operation is simple and convenient, and the working efficiency is improved.

[0041] The arc-shaped pressing plate 84 is internally provided with a cavity 85, a plurality of through holes 86 communicating with the cavity 85 are arranged on the top of the arc-shaped pressing plate 84, a connecting hole 87 for communicating the cavity 85 and the moving pipe 81 is arranged on the side wall of the arc-shaped pressing plate 84, an air inlet 88 is arranged on the side of the moving pipe 81 close to the piston 82, and a gas guide hole 89 is arranged on the side of the fixed cylinder 12 away from the rotating rod 6.

[0042] When the end cover casting is placed on the fixed seat 7, the inner top wall thereof abuts against the top of the arc-shaped abutting plate 84 and closes the through hole 86 at the top of the arc-shaped abutting plate 84. When the gas pressure driving element 10 is in operation, the input pipe 70 connected to the input end thereof is in communication with the inside of the fixed seat 7. At this time, since the through hole 86 is closed, the gas in the cavity 85 can only enter the movable pipe 81 through the connecting hole 87 and then enter the inside of the fixed cylinder 12 through the gas inlet 88. The gas in the inside of the plurality of fixed cylinders 12 is gathered in the inside of the fixed seat 7 and then delivered to the guide groove 61 through the input pipe 70. As the gas is continuously extracted, a negative pressure is formed in the inside of 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 abutting 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.

[0043] A limiting groove 63 in communication with the guide groove 61 is formed in the inner top wall of the rotating rod 6. The movable pipe 64 is axially and sealingly connected in the guide groove 61. The movable pipe 64 extends to the limiting groove 63 at the top. The sealing plug 65 is fixedly connected to the top of the movable pipe 64. The sealing plug 65 axially and sealingly slides in the inner wall of the limiting groove 63. The second spring 66 is arranged in the limiting groove 63 and movably sleeves the movable pipe 64. The two ends of the second spring 66 abut against the inner wall of the rotating rod 6 and the sealing plug 65, respectively. The first exhaust port 67 and the second exhaust port 68 are sequentially formed in the outer wall of the movable pipe 64 from top to bottom. A plurality of gas outlets 69 are uniformly formed in the outer side wall of the top of the rotating rod 6 in the circumferential direction.

[0044] The movable pipe 64 is arranged in the guide groove 61 in the rotating rod 6 and the sealing plug 65 is fixedly connected to the top of the movable pipe 64. In the initial state, the movable pipe 64 is sealingly connected with 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 in the inner wall of the movable pipe 64 are closed. When the gas enters the inside of the guide groove 61, the sealing plug 65 is pushed and moves upward along the limiting groove 63 under the pushing of the gas pressure until the position of the first exhaust port 67 moves to be in communication with the limiting groove 63 and the position of the second exhaust port 68 moves to be in communication with the shunt 62. When the first exhaust port 67 is in communication with the limiting groove 63, the gas enters the limiting groove 63 from the first exhaust port 67 and is discharged through the plurality of gas outlets 69, thereby blowing off the impurities generated during welding from the surface of the end cover, avoiding the interference of the impurities on the welding repair process and preventing the dust and impurities from entering the inside of the end cover from the socket of the end cover casting, ensuring the cleanliness of the edge of the socket and providing a good operating environment for the subsequent repair work. Not only the repair efficiency is improved, but also the repair quality is effectively guaranteed, so that the defects on the surface of the motor casting can be accurately and efficiently repaired.

[0045] All the first exhaust ports 67 are located above the fixed seat 7, and all the first exhaust ports 67 are conical in shape. The conical shape of the first exhaust port helps the gas to be discharged more smoothly, reduces the resistance of the gas during the exhaust process, and improves the exhaust efficiency of the gas. At the same time, the conical shape of the exhaust port also has a certain guiding effect, so that the gas is discharged in a diffused manner, increasing the discharge area, ensuring that the gas can accurately blow off impurities and clean the edge of the socket, further improving the cleaning effect on the surface of the end cover.

[0046] The transfer mechanism 4 comprises a holder 41 and a rotating disc 42, the holder 41 is installed at the top center position of the workbench 1, the rotating disc 42 is installed on the holder 41, and the transmission assembly 11 is installed inside the rotating disc 42 and is in transmission connection with the rotating rod 6 through the bearing table.

[0047] The transmission assembly 11 comprises a main gear 111 and a plurality of auxiliary gears 112, the main gear 111 is rotationally arranged inside the rotating disc 42, the plurality of auxiliary gears 112 are rotationally arranged on the inner wall of the rotating disc 42 in the circumferential direction, and the plurality of auxiliary gears 112 are in meshing connection with the main gear 111, a transmission belt 113 is sleeved on the main shaft of each auxiliary gear 112, and the other end of the transmission belt 113 is sleeved with the rotating rod 6 through the bearing table 5, and a driving motor is further installed on the top of the rotating disc 42, and the output shaft of the driving motor is coaxially arranged with the main gear 111.

[0048] When the driving motor is started, the output shaft drives the main gear 111 to rotate. Since the main gear 111 is in meshing connection with the plurality of auxiliary gears 112, the rotation of the main gear 111 drives all the auxiliary gears 112 to rotate synchronously. The transmission belt 113 sleeved on the main shaft of each auxiliary gear 112 also rotates, thereby transmitting the rotating 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 assembly 11, the fixed seat 7, the collecting groove 9 and the supporting assembly 8 are driven to rotate, thereby driving the motor end cover casting to rotate, which facilitates the welding repair assembly 2 to repair defects at different positions on the surface of the motor end cover casting, and improves the efficiency and effect of repairing defects on the surface of the motor end cover casting.

[0049] The protection scope of the application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the application within the spirit and protection scope of the application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the application.

Claims

1. A motor casting surface defect repairing device, comprising a workbench (1) and a translation driving mechanism installed on the workbench (1), and a welding repairing assembly (2) is installed on the translation driving mechanism, characterized in that, The workbench (1) is provided with a plurality of fixing tools (3) for fixing castings and a transfer mechanism (4) for transferring the plurality of fixing tools (3) to the lower side of the welding repair assembly (2) in sequence, and a receiving table (5) is connected between the plurality of fixing tools (3) and the transfer mechanism (4), the fixing tool (3) comprises a rotating rod (6), a fixing seat (7), a support assembly (8) for supporting the inner wall of the casting, a collecting groove (9) for collecting the powder generated during the welding repair of the casting, a pneumatic driving element (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 arranged at the end of the receiving table (5), and the rotating rod (6) is rotatably connected with the receiving table (5), the fixing seat (7) and the collecting groove (9) are fixedly arranged on the upper and lower sides of the receiving table (5), respectively, a plurality of fixed cylinders (12) are arranged in the circumferential direction of the side wall of the fixing seat (7), a plurality of support assemblies (8) are arranged, and the plurality of support assemblies (8) are slidably connected with the plurality of fixed cylinders (12) one by one, and the pneumatic driving element (10) is fixedly installed at the bottom of the rotating rod (6), and the input end of the pneumatic driving element (10) is communicated with the collecting groove (9) and the support assembly (8), respectively; The support assembly (8) comprises a moving pipe (81), a piston (82), a first spring (83) and an arc-shaped pressing plate (84), one end of the fixed cylinder (12) is fixedly connected with the outer wall of the rotating rod (6), the other end extends to the outside of the fixing seat (7) after penetrating through the fixing seat (7), the moving pipe (81) is axially and sealingly connected in the inside of the fixed cylinder (12), the piston (82) is fixedly connected at one end of the moving pipe (81) outside, close to the rotating rod (6), and the piston (82) is axially and sealingly connected with the fixed cylinder (12), the first spring (83) is movably sleeved on the outer wall of the moving pipe (81), and the two ends of the first spring (83) are respectively abutted with the piston (82) and the fixed cylinder (12), and the arc-shaped pressing plate (84) is fixed at the other end of the moving pipe (81). The arc-shaped pressing plate (84) is internally provided with a cavity (85), a plurality of through holes (86) are formed in the top of the arc-shaped pressing plate (84) and communicate with the cavity (85), a connecting hole (87) is formed in the side wall of the arc-shaped pressing plate (84) and is used for connecting the cavity (85) and the moving pipe (81), an air inlet (88) is formed in the bottom of the moving pipe (81) and is close to one side of the piston (82), a gas guide hole (89) is formed in the bottom of the fixed cylinder (12) and is away from the rotating rod (6), the input end of the gas pressure driving element (10) is connected with an input pipe (70), the input pipe (70) penetrates through the rotating rod (6) and then communicates with the inside of the fixed seat (7), a guide groove (61) is formed in the inner wall of the rotating rod (6), a plurality of shunt openings (62) are uniformly formed in the side wall of the rotating rod (6) and are used for connecting the guide groove (61) and the fixed cylinder (12) in the circumferential direction, and the output end of the gas pressure driving element (10) communicates with the guide groove (61).

2. A surface defect repair apparatus for motor castings as claimed in claim 1, wherein: A limiting groove (63) that communicates with the guide groove (61) is formed in the inner top wall of the rotating rod (6), the guide groove (61) is axially and sealingly connected with a movable pipe (64) in the inside, the movable pipe (64) extends to the limiting groove (63) in the top, the movable pipe (64) is fixedly connected with a sealing plug (65) in the top, the sealing plug (65) axially and sealingly slides with the inner wall of the limiting groove (63), the limiting groove (63) is provided with a second spring (66) that movably sleeves the movable pipe (64) in the inside, the two ends of the second spring (66) abut against the sealing plug (65) and the inner wall of the rotating rod (6) respectively, a first air outlet (67) and a second air outlet (68) are sequentially formed in the outer wall of the movable pipe (64) from top to bottom, and a plurality of gas outlets (69) are uniformly formed in the top outer side wall of the rotating rod (6) in the circumferential direction.

3. A surface defect repair apparatus for motor castings as claimed in claim 2, wherein: All the first air outlets (67) are located above the fixed seat (7) and are in a conical shape.

4. The apparatus for repairing surface defects of a motor casting according to claim 1, wherein: The collecting groove (9) comprises a groove plate (91) and a conical flow guide plate (92), the groove plate (91) is fixedly sleeved on the outer wall of the rotating rod (6) and is located below the supporting table (5), the conical flow guide plate (92) is fixed in the inside of the groove plate (91), a filter screen (93) is fixedly connected between the bottom of the conical flow guide plate (92) and the inner bottom wall of the groove plate (91), the filter screen (93) divides the inside of the groove plate (91) into a storage cavity (94) and an air exchange cavity (95), the input end of the gas pressure driving element (10) is connected with an air inlet pipe (96) through a three-way pipe, and the air inlet pipe (96) communicates with the air exchange cavity (95).

5. A surface defect repair apparatus for motor castings as claimed in claim 1, wherein: The transfer mechanism (4) comprises a holder (41) and a rotating disc (42), the holder (41) is installed at the top center position of the workbench (1), the rotating disc (42) is installed on the holder (41), the transmission assembly (11) is installed in the inside of the rotating disc (42), and the transmission assembly (11) penetrates through the supporting table and is in transmission connection with the rotating rod (6).

6. A surface defect repair apparatus for motor castings as claimed in claim 5, wherein: The transmission assembly (11) comprises a main gear (111) and a plurality of auxiliary gears (112), the main gear (111) is rotationally arranged inside the rotating disc (42), a plurality of auxiliary gears (112) are uniformly rotationally arranged on the inner wall of the rotating disc (42) in the circumferential direction, and the plurality of auxiliary gears (112) are all in mesh with the main gear (111), a transmission belt (113) is sleeved on the main shaft of all the auxiliary gears (112), and the other end of the transmission belt (113) is sleeved with the rotating rod (6) after penetrating through the supporting table (5), and a driving motor is further installed on the top of the rotating disc (42), and the output shaft of the driving motor is coaxially arranged with the main gear (111).

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