Full-automatic press fitting and coaxiality detection equipment for fan motor bearing

Abstract

The invention relates to the technical field of fan motor bearing detection, and discloses fan motor bearing full-automatic press fitting and coaxiality detection equipment which comprises a rack used for containing a to-be-detected machine shell and installing a coaxiality detection mechanism, and the coaxiality detection mechanism comprises an insertion type detection assembly; the plug-in type detection assembly comprises a first detection cylinder used for detecting the coaxiality deviation condition of a bearing groove in a machine shell. The extension assembly comprises a detection head; the first driving assembly is used for driving the detection head to move after entering the shell, so that the detection head is in contact with the inner wall of a bearing on the shell, the first detection cylinder is aligned with the bearing of the shell to be inserted, and the first driving assembly extrudes gas in the first detection cylinder to enable the detection head to move towards the inner wall of the bearing; by observing whether the distances of the detection heads extending out of the first detection cylinder are consistent and whether the detection heads can smoothly move in the bearing, the coaxiality deviation can be judged to be caused by the machining error of the bearing groove of the shell and the installation inclination of the bearing, and the positioning problem can be solved without extra disassembly.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine motor bearing testing technology, and particularly relates to a fully automatic press-fitting and coaxiality testing device for wind turbine motor bearings. Background Technology

[0002] In the production of wind turbine motors, the bearings, housing, and spindle must be coaxial. The spindle must be embedded into the bearing slots of the housing through bearings at both ends. The axes of the three must coincide. If there is a coaxiality deviation, it will not only cause assembly jamming and failure to install smoothly, but also cause problems such as accelerated bearing wear, increased noise, and increased energy consumption during motor operation. In severe cases, it will shorten the service life of the motor.

[0003] Currently, the industry standard for testing the coaxiality of bearings, housings, and spindles typically involves first pressing the bearings onto the housing using independent equipment, and then having workers use dial indicators, plug gauges, and other tools to randomly check the coaxiality, or rely on experience to observe the assembly clearance. This method has low accuracy and makes it difficult to pinpoint the root cause of deviations. Traditional tools can only preliminarily determine whether there is a coaxiality deviation, but cannot accurately distinguish the source of the deviation: whether it is caused by machining errors in the housing bearing groove leading to bearing installation misalignment, whether it is due to a mismatch in the inner ring size of the bearing itself, or whether there was a slight tilt during the pressing of the bearing. If uneven clearances are found during testing, workers need to repeatedly disassemble and replace the bearings or housing to troubleshoot the cause, which is not only time-consuming but may also damage parts during disassembly. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic press-fitting and coaxiality testing device for fan motor bearings, which solves the technical problem that traditional coaxiality testing tools in the prior art can only preliminarily determine whether there is a coaxiality deviation, but cannot accurately distinguish the source of the deviation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Fully automated press-fitting and coaxiality testing equipment for fan motor bearings, including: A frame for placing the housing to be tested and mounting a coaxiality testing mechanism, the coaxiality testing mechanism including an insert-type testing component; An insertion-type detection assembly includes a first detection cylinder for detecting the coaxiality misalignment of the bearing groove on the housing; The extension assembly includes a detection head for detecting the coaxiality of the housing and the bearing; The first drive assembly is used to drive the detection head to move after entering the housing, so that the detection head contacts the inner wall of the bearing on the housing.

[0006] According to some embodiments, the insertable detection assembly includes: a plurality of one-way air inlet pipes, all fixedly installed on a first detection cylinder; a first fixing ring, fixedly installed on the first detection cylinder, on which a plurality of hollow ring pipes are fixedly installed; and a first one-way air outlet pipe, fixedly installed on the first detection cylinder and fixedly connected to the hollow ring pipes.

[0007] According to some embodiments, the first driving component includes: a piston, slidably mounted inside the first detection cylinder, on which a movable column slidably connected to the first detection cylinder is fixedly mounted; and a second one-way air outlet pipe, one end of which is fixedly mounted on the piston and extends above the piston, and the other end is fixedly connected to the first fixing ring and communicates with the movable column.

[0008] According to some embodiments, the first drive assembly further includes: a compression column, fixedly installed at the bottom of the piston; and a threaded base, threadedly connected to the movable column, on which a plurality of first magnetic plates are fixedly installed.

[0009] According to some embodiments, the extension assembly includes: a second detection tube, fixedly mounted on the first detection cylinder, with a positioning plate fixedly mounted inside; a first auxiliary rod, slidably mounted on the positioning plate and fixedly connected to the detection head; and a second screw, rotatably connected to the positioning plate and threadedly connected to the detection head.

[0010] According to some embodiments, the extension assembly further includes: a hollow box, fixedly connected to the second screw, on which a plurality of bent tubes are rotatably mounted; a common gear, fixedly mounted on the bent tubes; and a connecting tube, one end of which is rotatably connected to the hollow box and the other end of which is fixedly connected to the first one-way air outlet pipe.

[0011] According to some embodiments, the coaxiality detection mechanism further includes a switching component, which includes: a second fixing ring, fixedly mounted on the connecting pipe; a hollow tube, rotatably mounted on the second fixing ring, with a track groove on its surface; a crown gear, fixedly mounted on the hollow tube; and a second auxiliary rod, fixedly mounted on the second fixing ring, with a magnetic ring slidably mounted on it extending into the track groove.

[0012] According to some embodiments, the coaxiality detection mechanism further includes a second driving component, the second driving component including: a slide rod, slidably mounted on the first fixed ring, with a driving ring fixedly mounted at its bottom end; a spring, one end of which is fixedly connected to the first fixed ring, and the other end of which is fixedly connected to the driving ring; and a second magnetic plate, fixedly mounted at the bottom of the driving ring.

[0013] In some embodiments, a pneumatic telescopic rod is fixedly installed on the frame, and the pneumatic telescopic rod is fixedly connected to the first detection cylinder.

[0014] According to some embodiments, the coaxiality detection mechanism further includes a coaxial placement assembly, which includes: a placement platform, fixedly mounted on the frame, on which a mounting bracket is fixedly mounted; and a first screw, rotatably mounted on the mounting bracket, on which a movable platform is threadedly connected and slidably connected to the placement platform.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, the first detection cylinder is inserted into the bearing of the housing, and the first drive assembly squeezes the gas inside the first detection cylinder to move the detection head toward the inner wall of the bearing. By observing whether the distance of each detection head extending out of the first detection cylinder is consistent and whether it can move smoothly inside the bearing, it can be determined that the coaxiality deviation is caused by the machining error of the bearing groove of the housing or the tilt of the bearing itself. The problem can be located without additional disassembly.

[0016] 2. During testing, the one-way air inlet pipe on the first testing cylinder helps balance the air pressure inside the cylinder, and the hollow ring pipe connects the sealed space with the first one-way air outlet pipe to ensure stable gas transmission. If each testing head extends the same distance but exceeds the outer surface of the first testing cylinder, it indicates that the inner ring size of the bearing does not meet the standard. If the testing head and the first testing cylinder cannot move further inside the bearing, it indicates that there is jamming after the bearing is installed. These non-coaxiality adaptation problems can be judged by the action of the gas-driven testing head.

[0017] 3. When dealing with housings and bearings of different heights, the present invention can rotate the first screw of the coaxial placement component to move the moving platform up and down to compensate for the height difference of the housing, so that the threaded base can contact the moving platform to achieve limiting; the threaded base can also be rotated to adjust its position, and the distance between the bearing and the threaded base can be controlled in conjunction with the downward movement of the moving platform to ensure that multiple detection heads can fully contact the inner wall of the bearing, thereby enabling the detection of products of different specifications. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the coaxiality detection mechanism in this invention; Figure 3 This is a schematic diagram of the assembly structure of the insertion-type detection component in this invention; Figure 4This is a schematic diagram of the assembly structure of the first driving component in this invention; Figure 5 This is a schematic diagram of the assembly structure of the second driving component in this invention; Figure 6 This is a schematic diagram of the assembly structure of the extension component in this invention; Figure 7 This is a schematic diagram of the assembly structure of the hollow box and the bent tube in this invention; Figure 8 This is a schematic diagram of the assembly structure of the switching component in this invention; Figure 9 This is a schematic diagram of the structure of the second auxiliary rod in this invention; Figure 10 This is a schematic diagram of the assembly structure of the coaxially placed components in this invention.

[0020] Reference numerals: 100, frame; 200, coaxiality detection mechanism; 210, coaxial placement assembly; 211, placement platform; 212, moving platform; 213, mounting bracket; 214, first screw; 220, insertion-type detection assembly; 221, first detection cylinder; 222, one-way air inlet pipe; 223, first fixing ring; 224, first one-way air outlet pipe; 225, hollow ring pipe; 230, first drive assembly; 231, piston; 232, extrusion column; 233, second one-way air outlet pipe; 234, moving column; 235, first magnetic plate; 236, threaded base; 240. Second drive assembly; 241, slide bar; 242, drive ring; 243, second magnetic plate; 244, spring; 250, extension assembly; 251, second detection tube; 252, detection head; 253, first auxiliary rod; 254, positioning plate; 255, second screw; 256, bent tube; 257, hollow box; 258, ordinary gear; 259, connecting tube; 260, switching assembly; 261, crown gear; 262, magnetic ring; 263, hollow tube; 264, track groove; 265, second fixing ring; 266, second auxiliary rod; 300, pneumatic telescopic rod; 400, housing. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0024] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0025] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1: like Figures 1 to 10 As shown, the fully automatic press-fitting and coaxiality testing equipment for wind turbine motor bearings includes a frame 100 and a housing 400 placed on the frame 100 for coaxiality testing. It also includes a coaxiality testing mechanism 200, which includes: an insertion-type testing component 220 including a first testing cylinder 221 for detecting the coaxiality misalignment of the bearing groove on the housing 400; an extension component 250 including a testing head 252 for detecting the coaxiality between the housing 400 and the bearing; and a first drive component 230 for driving the testing head 252 to move after entering the housing 400, so that the testing head 252 contacts the inner wall of the bearing on the housing 400.

[0028] It should be noted that in the wind turbine motor, a bearing needs to be installed at each of the front and rear ends of the spindle. The two bearings are respectively embedded in the bearing grooves of the two housings 400. Both ends of the spindle are installed inside the two bearings. This requires that the central axis of the housing 400, the bearings, and the spindle be on the same axis. If there is a deviation, installation will be impossible. However, during the manufacturing process of the housing 400, the bearing grooves used to install the bearings are not necessarily standard and may contain errors. This will cause the bearings installed on the housing 400 to also deviate, resulting in the spindle not being able to be installed on the bearings of the two housings 400. The housing 400 can be fixed to the frame 100, so that the first detection on the insertion detection component 220... As the cylinder 221 moves, since the fixed position center on the frame 100 coincides with the axis of the first detection cylinder 221, if the first detection cylinder 221 cannot enter the bearing inside the housing 400 when it moves down to the housing 400, it indicates that there may be a deviation in the bearing groove of the housing 400, resulting in a bearing installation deviation. It is also possible that the inner ring diameter of the bearing is too small and does not meet the standard, thus preventing it from entering. In this case, it is necessary to observe whether the radial clearance between the placement platform 211 and the bearing is evenly distributed. If it is not evenly distributed, it indicates that there is a deviation in the bearing groove of the housing 400, resulting in a bearing installation deviation. If it is evenly distributed, it indicates that the inner ring size of the bearing does not meet the standard and also needs to be replaced.

[0029] If the probe enters the bearing, the probe 252 on the first probe cylinder 221 will move synchronously, so that the probe 252 will come into contact with the inside of the bearing. If the end of the probe 252 near the inner wall of the bearing extends beyond the maximum diameter of the first probe cylinder 221, it means that the diameter of the bearing is too large and it needs to be replaced.

[0030] like Figures 1 to 4 As shown, the insertion-type detection assembly 220 includes a first detection cylinder 221, a one-way air inlet pipe 222, a first fixing ring 223, a first one-way air outlet pipe 224, and a hollow ring pipe 225; multiple one-way air inlets 222 are fixedly installed on the first detection cylinder 221; the first fixing ring 223 is fixedly installed on the first detection cylinder 221, and multiple hollow ring pipes 225 are fixedly installed on the first fixing ring 223; the first one-way air outlet pipe 224 is fixedly installed on the first detection cylinder 221, and the first one-way air outlet pipe 224 is fixedly connected to the hollow ring pipe 225.

[0031] It should be noted that the first fixing ring 223 divides the first detection cylinder 221 into two layers. The layer above the first fixing ring 223 is a sealed space, and the hollow ring tube 225 connects the sealed space to the internal space of the first one-way vent tube 224.

[0032] The first drive assembly 230 includes a piston 231, a compression column 232, a second one-way vent pipe 233, a moving column 234, a first magnetic plate 235, and a threaded base 236. The piston 231 is slidably installed inside the first detection cylinder 221, and the moving column 234, which is slidably connected to the first detection cylinder 221, is fixedly installed on the piston 231. One end of the second one-way vent pipe 233 is fixedly installed on the piston 231, and the second one-way vent pipe 233 extends above the piston 231. The other end of the second one-way vent pipe 233 is fixedly connected to the first fixing ring 223, and the second one-way vent pipe 233 is connected to the moving column 234.

[0033] The first drive assembly 230 also includes: a compression column 232 fixedly installed at the bottom of the piston 231; a threaded base 236 threadedly connected to the moving column 234, and a plurality of first magnetic plates 235 fixedly installed on the threaded base 236.

[0034] It should be noted that when the first detection cylinder 221 enters the bearing, the threaded base 236 is limited by the coaxial placement assembly 210. Driven by the pneumatic telescopic rod 300, the first detection cylinder 221 continues to move downwards. Since the piston 231 is fixed to the threaded base 236 via the moving column 234, the piston slides relative to the inner wall of the first detection cylinder 221, compressing the gas inside the cylinder to generate pressure, providing power for the movement of the detection head 252. This allows the gas to enter the first one-way outlet pipe 224 through the second one-way outlet pipe 233, and then enters the extension assembly 250, where it rotates to generate kinetic energy, driving the detection head 252 to move. Thus, the detection head 252 will move downwards against the inner ring of the bearing. If the end of multiple detection heads 252 furthest from the moving column 234 coincides with the outer surface of the first detection cylinder 221, it indicates that the coaxiality of the bearing installed on the housing 400 is correct, and the size of the bearing inner ring also conforms to the specifications. According to the standard, if multiple detection heads 252 move out and all extend beyond the outer surface of the first detection cylinder 221, but the distance they extend is the same, it indicates that the coaxiality is not a problem, but the inner ring size of the bearing is problematic and needs to be replaced. If the distances they extend are different, but multiple detection heads 252 can move up and down inside the bearing, it indicates that the coaxiality is a problem, and the inner ring size of the bearing is also problematic. If multiple detection heads 252 extend to different distances, and the first detection cylinder 221 and the detection heads 252 cannot move further inside the bearing, it indicates that the bearing was not installed stably in the bearing groove of the housing 400, but was tilted, causing the multiple detection heads 252 to move different distances and get stuck inside the bearing, and the bearing needs to be reinstalled. The different distances of movement of multiple detection heads 252 can also be used to determine which side of the bearing is tilted.

[0035] like Figure 6 and Figure 7As shown, the extension assembly 250 includes a second detection tube 251, a detection head 252, a first auxiliary rod 253, a positioning plate 254, a second screw 255, a bent tube 256, a hollow box 257, a common gear 258, and a connecting tube 259. The second detection tube 251 is fixedly installed on the first detection cylinder 221, and the positioning plate 254 is fixedly installed inside the detection head 252. The first auxiliary rod 253 is slidably installed on the positioning plate 254 and is fixedly connected to the detection head 252. The second screw 255 is rotatably connected to the positioning plate 254 and threadedly connected to the detection head 252.

[0036] The extension assembly 250 also includes a hollow box 257, which is fixedly connected to the second screw 255. Multiple bent pipes 256 are rotatably mounted on the hollow box 257. A common gear 258 is fixedly mounted on the bent pipes 256. One end of the connecting pipe 259 is rotatably connected to the hollow box 257, and the other end of the connecting pipe 259 is fixedly connected to the first one-way air outlet pipe 224.

[0037] It should be noted that the gas compressed by the piston 231 enters the first one-way exhaust pipe 224 through the second one-way exhaust pipe 233. Subsequently, the gas enters the hollow box 257 through the connecting pipe 259. The gas inside the hollow box 257 is discharged through the bent pipe 256. Due to the bend in the bent pipe 256, the gas reacts to the hollow box 257, causing the hollow box 257 to rotate continuously under the action of the gas. This causes the hollow box 257 to drive the second screw 255 to rotate. The rotation of the second screw 255 will drive the detection head 252 to move. The detection head 252 is used to detect the coaxiality of the bearing on the housing 400, as well as the size and installation status of the bearing.

[0038] like Figure 5 , Figure 8 and Figure 9 As shown, the switching assembly 260 includes a crown gear 261, a magnetic ring 262, a hollow tube 263, a track groove 264, a second fixing ring 265, and a second auxiliary rod 266. The second fixing ring 265 is fixedly mounted on the connecting pipe 259. The hollow tube 263 is rotatably mounted on the second fixing ring 265, and the track groove 264 is formed on the surface of the hollow tube 263. The crown gear 261 is fixedly mounted on the hollow tube 263. The second auxiliary rod 266 is fixedly mounted on the second fixing ring 265, and a magnetic ring 262 extending into the track groove 264 is slidably mounted on the second auxiliary rod 266.

[0039] The second drive assembly 240 includes a slide rod 241, a drive ring 242, a second magnetic plate 243, and a spring 244. The slide rod 241 is slidably mounted on the first fixed ring 223, and the drive ring 242 is fixedly mounted on the bottom end of the slide rod 241. One end of the spring 244 is fixedly connected to the first fixed ring 223, and the other end of the spring 244 is fixedly connected to the drive ring 242. The second magnetic plate 243 is fixedly mounted on the bottom of the drive ring 242.

[0040] A pneumatic telescopic rod 300 is fixedly installed on the frame 100, and the pneumatic telescopic rod 300 is fixedly connected to the first detection cylinder 221.

[0041] It should be noted that after the first detection cylinder 221 and the detection head 252 have completed their downward detection, if the first detection cylinder 221 and the detection head 252 can smoothly pass through the bearing and move to the bottom, then the first detection cylinder 221 will approach the threaded base 236. The first magnetic plate 235 on the threaded base 236 will also extend into the first detection cylinder 221, thereby acting on the magnetic ring 262. Since the magnetic ring 262 and the first magnetic plate 235 are magnetically repelled, the magnetic ring 262 will drive the hollow tube 263 to rotate. The rotation of the hollow tube 263 will cause the crown gear 261 to rotate, and the crown gear 261 will act on the ordinary gear 258. Because the detection head 252 is limited inside the bearing, it cannot... Extending further, the hollow box 257 also cannot rotate. In this case, the crown gear 261 will only drive the ordinary gear 258 to rotate, causing the bent tube 256 to rotate 180 degrees. Since the first detection cylinder 221 and the detection head 252 do not pass smoothly through the bearing, the pneumatic telescopic rod 300 first returns the first detection cylinder 221 to its original position, and then pushes the threaded base 236, causing the first magnetic plate 235 on the threaded base 236 to move into the first detection cylinder 221 to act on the magnetic ring 262. During this process, the detection head 252 will also be driven to move until it can no longer move. Only then will the magnetic ring 262 move, causing the crown gear 261 to drive the bent tube 256 to rotate, completing the reversal.

[0042] After the reversal is complete, the threaded base 236 can be pulled down to return it to its original position. This will cause the gas to drive the hollow box 257 to rotate. Due to the reversal of the bend 256, the detection head 252 will move in the opposite direction until it can no longer move. When the threaded base 236 returns to its original position, the extrusion column 232 on the piston 231 will press the slide rod 241, causing the drive ring 242 and the second magnetic plate 243 to move down until the second magnetic plate 243 acts on the magnetic ring 262, causing the crown gear 261 to rotate in the opposite direction, thus resetting the bend 256. Finally, the threaded base 236 is released, and the spring 244 returns to its original state, thus causing the drive ring 242 and the second magnetic plate 243 to return to their original positions. In this way, the slide rod 241 will also cause the piston 231 and the threaded base 236 to move up and return to their original positions. The upward movement of the piston 231 will compress the gas, causing the gas to drive the detection head 252 to move, so that the detection head 252 is flush with the opening of the second detection tube 251, making it convenient for continued use next time.

[0043] The working principle of this embodiment: The housing 400 to be tested is fixed on the frame 100, ensuring that the bearing groove of the housing 400 is aligned with the axis of the first testing cylinder 221; the pneumatic telescopic rod 300 on the frame 100 is activated, and the pneumatic telescopic rod 300 pushes the first testing cylinder 221 of the insertion testing assembly 220 to move vertically downward. The one-way air inlet pipe 222 on the first testing cylinder 221 synchronously balances the air pressure inside the cylinder to avoid air pressure fluctuations affecting the stability of the downward movement.

[0044] When the first detection cylinder 221 approaches and inserts into the bearing on the housing 400, the threaded base 236 of the first drive assembly 230 is limited and fixed by the coaxial placement assembly 210; the first detection cylinder 221 continues to move downward, driving the piston 231 to slide along the inner wall of the detection cylinder, the piston 231 squeezes the gas in the cylinder, the gas is transported to the first fixed ring 223 through the second one-way gas outlet pipe 233, and then diverted to the first one-way gas outlet pipe 224 through the hollow ring pipe 225, and finally enters the hollow box 257 of the extension assembly 250 through the connecting pipe 259.

[0045] The gas entering the hollow box 257 is discharged from multiple bends 256. Because the bends 256 are curved, the gas discharge generates a reaction force, driving the hollow box 257 to rotate. The hollow box 257 drives the second screw 255 to rotate synchronously. The second screw 255 is threadedly engaged with the detection head 252, driving the detection head 252 to move along the first auxiliary rod 253 towards the inner wall of the bearing. The positioning plate 254 ensures that the movement trajectory of the detection head 252 is accurate.

[0046] The test results are judged by observing the movement of the detection head 252: if the distances from which multiple detection heads 252 extend out of the first detection cylinder 221 are consistent and are flush with the outer surface of the first detection cylinder 221, it indicates that the coaxiality of the bearing groove of the housing 400 is qualified and the inner ring size of the bearing is standard; if the distances from which the detection heads 252 extend are the same but exceed the outer surface of the first detection cylinder 221, it indicates that the inner ring size of the bearing is too large; if the distances from which the detection heads 252 extend are inconsistent and the first detection cylinder 221 cannot move smoothly inside the bearing, it indicates that the bearing is installed at an angle; if the first detection cylinder 221 cannot be inserted into the bearing and the radial clearance between the placement platform 211 and the bearing is uneven, it indicates that the coaxiality of the bearing groove of the housing is deviated, and if the clearance is uniform, it indicates that the inner ring size of the bearing is too small.

[0047] After the test is completed, if the first test cylinder 221 passes smoothly through the bearing, the first magnetic plate 235 on the threaded base 236 extends into the first test cylinder 221 and interacts with the magnetic ring 262 of the switching assembly 260. The magnetic repulsion causes the magnetic ring 262 to slide along the track groove 264, which in turn drives the hollow tube 263 and the crown gear 261 to rotate. The crown gear 261 meshes with the ordinary gear 258, driving the bent tube 256 to rotate 180 degrees to complete the reversal.

[0048] The threaded base 236 is brought back to its original position. At this time, the gas reverses and drives the hollow box 257 to rotate. The second screw 255 drives the detection head 252 to move in the opposite direction. During the reset process of the threaded base 236, the extrusion column 232 on the piston 231 extrudes the slide rod 241 of the second drive assembly 240. The drive ring 242 compresses the spring 244 and moves it downward. The second magnetic plate 243 acts on the magnetic ring 262, driving the crown gear 261 to rotate in the opposite direction, so that the bent tube 256 is reset. The threaded base 236 is released. The spring 244 pushes the drive ring 242 and the slide rod 241 upward, driving the piston 231 and the threaded base 236 back to the initial position. The piston 231 moves upward and extrudes the gas, driving the detection head 252 to be flush with the opening of the second detection tube 251, preparing for the next detection.

[0049] Example 2: As Figure 1 and Figure 10 As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that: The coaxial placement assembly 210 includes a placement platform 211, a moving platform 212, a mounting bracket 213, and a first screw 214. The placement platform 211 is fixedly mounted on the frame 100, and the mounting bracket 213 is fixedly mounted on the placement platform 211. The first screw 214 is rotatably mounted on the mounting bracket 213, and the moving platform 212, which is slidably connected to the placement platform 211, is threaded onto the first screw 214.

[0050] The working principle of this embodiment is as follows: The height of the housing 400 varies depending on the specifications. When the height of the housing 400 is higher, the bottom of the threaded base 236 will not contact the moving platform 212 when the first detection cylinder 221 enters the bearing, and synchronization cannot be achieved. As a result, the detection head 252 cannot fully detect the coaxiality of the housing and the bearing. At this time, the first screw 214 can be rotated to drive the moving platform 212 to move upward. The moving platform 212 can compensate for the height difference of the housing 400, so that when the first detection cylinder 221 enters the bearing, the bottom of the threaded base 236 can contact the moving platform 212, thereby enabling the detection head 252 to perform detection.

[0051] Furthermore, the bearings vary in size and height. When encountering taller bearings, the length to be detected increases. Thus, after the threaded base 236 contacts the moving platform 212, although the above-mentioned synchronization can be achieved, the distance between the threaded base 236 and the bearing becomes smaller, causing some bearings to be undetectable. To address this, the threaded base 236 can be rotated to move it downwards, increasing the total length. The first screw 214 can also be rotated to move the moving platform 212 downwards, thereby controlling the distance between the bearing and the threaded base 236 and facilitating the synchronous operation of the threaded base 236 and the first detection cylinder 221.

[0052] Furthermore, the first detection cylinder 221 can be removed from the pneumatic telescopic rod 300, and a stamping platform can be installed. With the help of the pneumatic telescopic rod 300, the stamping platform can install the bearing into the machine housing 400 to complete the press fitting.

[0053] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0054] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fully automatic press-fitting and coaxiality testing equipment for fan motor bearings, characterized in that, include: A frame for placing the housing to be tested and mounting a coaxiality testing mechanism, the coaxiality testing mechanism including an insert-type testing component; An insertion-type detection assembly includes a first detection cylinder for detecting the coaxiality misalignment of the bearing groove on the housing; The extension assembly includes a detection head for detecting the coaxiality of the housing and the bearing; The first drive assembly is used to drive the detection head to move after entering the housing, so that the detection head contacts the inner wall of the bearing on the housing.

2. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 1, characterized in that, The insertion detection component includes: Multiple one-way air inlet pipes are all fixedly installed on the first detection cylinder; The first fixed ring is fixedly installed on the first detection cylinder, and multiple hollow ring tubes are fixedly installed on it; The first one-way exhaust pipe is fixedly installed on the first detection cylinder and is fixedly connected to the hollow ring pipe.

3. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 2, characterized in that, The first driving component includes: A piston is slidably installed inside the first detection cylinder, and a movable column that is slidably connected to the first detection cylinder is fixedly installed on it. The second one-way exhaust pipe has one end fixedly mounted on the piston and extends above the piston, and the other end is fixedly connected to the first fixing ring and communicates with the moving column.

4. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 3, characterized in that, The first driving component also includes: The extrusion column is fixedly installed at the bottom of the piston; A threaded base is threadedly connected to the movable column, and multiple first magnetic plates are fixedly installed on it.

5. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 4, characterized in that, The extension component includes: The second detection tube is fixedly installed on the first detection cylinder, and a positioning plate is fixedly installed inside it. The first auxiliary rod is slidably mounted on the positioning plate and fixedly connected to the detection head; The second screw is rotatably connected to the positioning plate and threadedly connected to the detection head.

6. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 5, characterized in that, The extension component also includes: A hollow box is fixedly connected to the second screw, and multiple bent tubes are rotatably mounted on it; A standard gear is fixedly installed on the bent pipe; The connecting pipe is rotatably connected to the hollow box at one end and fixedly connected to the first one-way air outlet pipe at the other end.

7. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 6, characterized in that, The coaxiality detection mechanism further includes a switching component, which comprises: The second fixing ring is fixedly installed on the connecting pipe; A hollow tube is rotatably mounted on the second fixed ring, and a track groove is formed on its surface; The crown gear is fixedly installed in the hollow tube; The second auxiliary rod is fixedly installed on the second fixed ring, and a magnetic ring extending into the track groove is slidably installed on it.

8. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 2, characterized in that, The coaxiality detection mechanism further includes a second drive component, the second drive component comprising: A sliding rod is slidably mounted on the first fixed ring, and a drive ring is fixedly mounted on its bottom end; One end of the spring is fixedly connected to the first fixed ring, and the other end is fixedly connected to the drive ring. The second magnetic plate is fixedly installed at the bottom of the drive ring.

9. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 2, characterized in that, A pneumatic telescopic rod is fixedly installed on the frame, and the pneumatic telescopic rod is fixedly connected to the first detection cylinder.

10. The fully automatic press-fitting and coaxiality testing equipment for fan motor bearings according to claim 1, characterized in that, The coaxiality detection mechanism further includes a coaxial placement assembly, which includes: A placement platform is fixedly installed on the frame, and a mounting bracket is fixedly installed on it; The first screw is rotatably mounted on the mounting bracket, and a movable platform that is slidably connected to the placement platform is threaded onto it.

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