A bearing press-fitting device for a permanent magnet motor

Abstract

The application provides a permanent magnet motor bearing press-fitting device, which comprises a rack, a pressing mechanism and a gas tightness detection mechanism arranged in sequence on the rack; the pressing mechanism is used for pressing the bearing into the motor end cover and comprises a fixing seat, a first pressing seat and a first pressing drive assembly; the fixing seat is arranged on the rack and is provided with a positioning part for positioning the end cover; the gas tightness detection mechanism is used for detecting the gas tightness of the motor end cover and comprises a sealing disc, a second pressing drive assembly, a second pressing seat, an inflation hole and a gas pressure detector; the sealing disc is arranged on the rack and can form a detection space with the bottom of the motor end cover. The permanent magnet motor bearing press-fitting device can stably press the bearing into the motor end cover, and after the operation of pressing the bearing is completed, the gas tightness detection mechanism is used for detecting the gas tightness of the motor end cover, so that unqualified motor end covers can be removed, and the production quality of the motor is improved.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically to a permanent magnet motor bearing press-fitting device. Background Technology

[0002] An electric motor (English: Electric machinery, commonly known as a "motor") is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Electric motors can be classified into DC motors and AC motors according to the type of power source they use. The end cover of an electric motor usually contains bearings to support the rotating shaft.

[0003] During the production process, the motor end cover needs to be pressed with a bearing. Due to cracks or air holes in some unqualified motor end covers during manufacturing or after pressing the bearing, the airtightness of the motor end cover is insufficient, which affects the quality of the motor. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a permanent magnet motor bearing press-fitting device.

[0005] One embodiment of the present invention provides a permanent magnet motor bearing press-fitting device, comprising: a frame and a pressing mechanism and an airtightness detection mechanism sequentially arranged on the frame;

[0006] The pressing mechanism is used to press the bearing into the motor end cover, and includes a fixed seat, a first pressing seat and a first pressing drive assembly. The fixed seat is disposed on the frame and is provided with a positioning part for positioning the end cover. The first pressing seat is movably disposed above the fixed seat by means of the first pressing drive assembly.

[0007] The air tightness testing mechanism is used to test the air tightness of the motor end cover. It includes a sealing disc, a second pressing drive assembly, a second pressing seat, an inflation hole, and a pressure detector. The sealing disc is mounted on the frame and can form a testing space with the bottom of the motor end cover. The pressure detector is connected to the sealing disc and communicates with the testing space. The second pressing seat is vertically and flexibly mounted above the sealing disc via the second pressing drive assembly. The second pressing seat is provided with an inflation hole that communicates with the testing space.

[0008] Compared with the prior art, the permanent magnet motor bearing pressing device of the present invention can stably press the bearing into the motor end cover, and after the bearing pressing operation is completed, the air tightness of the motor end cover can be detected by the air tightness detection mechanism, thereby facilitating the removal of unqualified motor end covers and improving the production quality of motors.

[0009] In some optional embodiments, the fixing base is provided with two clamping plates located on both sides of the positioning part, and a reset elastic element is connected between the clamping plates and the fixing base;

[0010] The first pressing seat is provided with two force-applying inclined surfaces. When the second pressing drive assembly drives the first pressing seat to descend, the force-applying inclined surfaces press against the clamping plates, so that the two clamping plates move towards each other and cooperate to clamp the motor end cover.

[0011] In some alternative embodiments, a force-receiving roller is rotatably provided on the clamping plate, and the force-applying inclined surface drives the clamping plate to move by pressing against the wheel surface of the force-receiving roller.

[0012] In some optional embodiments, the first pressing seat is provided with a pressing part, an elastic buffer and a damping buffer, the pressing part is connected to the first pressing seat through the elastic buffer, and the damping buffer is located between the first pressing seat and the pressing part;

[0013] After the first pressing drive assembly drives the first pressing seat to descend to the first position, the pressing part abuts against the bearing, and the elastic buffer is squeezed by the pressing part and generates elastic deformation. After the first pressing drive assembly drives the first pressing seat to descend to the second position, the damping buffer abuts against the pressing part and is compressed by the pressing part. The pressing part presses the bearing into the motor end cover. The second position is lower than the first position.

[0014] In some optional embodiments, the permanent magnet motor bearing press-fitting device further includes: a feeding mechanism disposed on one side of the frame, the frame being provided with a first guide rail and a first translation drive assembly, the fixed seat being movably connected to the first guide rail, and the first translation drive assembly being drively connected to the fixed seat for driving the fixed seat to move back and forth between the feeding mechanism and the first pressing seat along the first guide rail.

[0015] In some optional embodiments, the feeding mechanism includes a positioning seat, a motor end cover conveying assembly, a bearing conveying assembly, a first clamping assembly, and a second clamping assembly. The positioning seat is mounted on the frame and is used to position the motor end cover. The motor end cover conveying assembly and the bearing conveying assembly are located on opposite sides of the positioning seat. The first clamping assembly is located between the motor end cover conveying assembly and the positioning seat and is used to clamp the motor end cover on the motor end cover conveying assembly onto the positioning seat. The second clamping assembly is located between the bearing conveying assembly and the positioning seat and is used to clamp the bearing on the bearing conveying assembly onto the positioning seat.

[0016] In some optional embodiments, the bearing conveying assembly includes a bearing vibratory feeder, a bearing conveying groove, a pusher plate, and a second translation drive assembly. The bearing vibratory feeder is connected to the bearing conveying groove. The inner wall of the bearing conveying groove is provided with a first arc-shaped positioning part. The pusher plate is disposed on one side of the bearing conveying groove. The side of the pusher plate facing the first arc-shaped positioning part is provided with a second arc-shaped positioning part. The second translation drive assembly is drivenly connected to the pusher plate and is used to drive the pusher plate to move closer to or away from the second arc-shaped positioning part.

[0017] In some optional embodiments, a waste area is provided on one side of the frame, and a first guide rail, a third translation drive assembly, and a third clamping assembly are provided on the frame. The sealing disc is movably connected to the first guide rail, and the third translation drive assembly is drivenly connected to the fixed seat to drive the fixed seat to move back and forth between the second pressing seat and the third clamping assembly along the first guide rail. The third clamping assembly is used to clamp the motor end cover with unqualified airtightness on the sealing disc into the waste area.

[0018] In some optional embodiments, the permanent magnet motor bearing press-fitting device further includes: a press-fitting quality inspection mechanism disposed on one side of the frame, the press-fitting quality inspection mechanism including a second guide rail, a movable seat movably disposed on the second guide rail, and a vision inspection component disposed above the second guide rail, the movable seat moving closer to or further away from the vision inspection component along the second guide rail, the movable seat being provided with a positioning shaft and a rotary motor, the positioning shaft being used for engaging with the bearing, and the rotary motor being drively connected to the positioning shaft.

[0019] In some alternative embodiments, a bushing is detachably fitted on the outer side of the positioning shaft, and the positioning shaft is engaged with the bearing via the bushing.

[0020] To provide a clearer understanding of the present invention, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a permanent magnet motor bearing press-fitting device according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a motor end cover;

[0023] Figure 3 This is a schematic diagram of a portion of the structure of a permanent magnet motor bearing press-fitting device according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of one side of the pressing mechanism according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a fixing base according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of one side of the airtightness testing mechanism according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the sealing disc and the air pressure detector according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of one side of the airtightness testing mechanism according to another embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the feeding mechanism according to an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of a bearing delivery assembly according to an embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the structure of a movable base according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Frame; 11. First guide rail; 12. First translation drive assembly; 13. Waste area; 14. Third translation drive assembly; 15. Third clamping assembly; 20. Pressing mechanism; 21. Fixed base; 22. First pressing base; 221. Force application ramp; 222. Pressing part; 223. Elastic buffer; 224. Damping buffer; 23. First pressing drive assembly; 24. Positioning part; 25. Clamping plate; 26. Reset elastic element; 27. Force-bearing roller; 30. Air tightness detection mechanism; 31. Sealing plate; 32. Second pressing drive assembly; 33. Second pressing base; 34. Inflation hole; 35. 40. Air pressure detector; 41. Feeding mechanism; 42. Positioning seat; 43. Motor end cover conveying assembly; 44. Bearing conveying assembly; 45. Bearing vibratory plate; 46. Bearing conveying groove; 47. Push plate; 48. Second translation drive assembly; 49. First arc-shaped positioning part; 40. Second arc-shaped positioning part; 41. Limit sensing cylinder; 42. First clamping assembly; 43. Second clamping assembly; 54. Pressing quality inspection mechanism; 55. Second guide rail; 56. Moving seat; 57. Vision inspection assembly; 58. Positioning shaft; 59. Rotary motor; 60. Motor end cover; 61. Rotary shaft hole. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0035] Please see Figure 1 This is a schematic diagram of the structure of a permanent magnet motor bearing press-fitting device according to an embodiment of the present invention. The permanent magnet motor bearing press-fitting device includes: a frame 10 and a pressing mechanism 20 and an airtightness detection mechanism 30 arranged sequentially on the frame 10.

[0036] Please see Figures 2 to 5 , Figure 2 This is a schematic diagram of the structure of a motor end cover. Figure 3 This is a schematic diagram of a portion of the structure of a permanent magnet motor bearing press-fitting device according to an embodiment of the present invention. Figure 4 This is a schematic diagram of one side of the pressing mechanism according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of a fixed base according to an embodiment of the present invention. The pressing mechanism 20 is used to press the bearing onto the motor end cover 60 and includes a fixed base 21, a first pressing base 22, and a first pressing drive assembly 23. The fixed base 21 is mounted on the frame 10 and has a positioning part 24 for positioning the motor end cover 60. The positioning part 24 can be positioned and engaged with the shaft hole 61 of the motor end cover 60 or other suitable structures. The first pressing base 22 is vertically and flexibly mounted above the fixed base 21 via the first pressing drive assembly 23. The motor end cover 60 is positioned on the fixed base 21 by the positioning part 24. When the first pressing drive assembly 23 drives the first pressing base 22 to descend, the first pressing base 22 can press the bearing onto the motor end cover 60.

[0037] Please see Figures 6 to 7 , Figure 6 This is a schematic diagram of one side of the airtightness testing mechanism according to an embodiment of the present invention. Figure 7This is a schematic diagram of the structure of a sealing disc and a pressure detector according to an embodiment of the present invention. The air tightness detection mechanism 30 is used to detect the air tightness of the motor end cover 60 and includes a sealing disc 31, a second pressing drive assembly 32, a second pressing seat 33, an inflation hole 34, and a pressure detector 35. The sealing disc 31 is mounted on the frame 10 and can form a detection space with the bottom of the motor end cover 60. The pressure detector 35 is connected to the sealing disc 31 and communicates with the detection space. The second pressing seat 33 is movably mounted above the sealing disc 31 through the second pressing drive assembly 32. The second pressing seat 33 is provided with an inflation hole 34 communicating with the detection space. After the first pressing seat 22 presses the bearing onto the motor end cover 60, the motor end cover 60 is flipped over and placed on the sealing plate 31, so that a detection space is formed between the bottom of the motor end cover 60 and the sealing plate 31. At this time, the bearing is also located in the detection space. Then, the second pressing seat 33 descends so that the motor end cover 60 is tightly pressed against the sealing plate 31, thereby improving the sealing of the detection space. The motor end cover 60 has a shaft hole 61 for the shaft to pass through. The air inlet 34 communicates with the detection space through the shaft hole 61. The air inlet device fills the detection space with a preset air pressure through the air inlet 34. The air pressure of the detection space is monitored by the air pressure detector 35. If the air pressure of the detection space is less than the preset air pressure, the motor end cover 60 has a crack or a leak, and the motor end cover 60 is unqualified. In this embodiment, the inflation device inflates the detection space for 10 seconds and then maintains the pressure in the detection space for 20 seconds. During the pressure maintenance process, the air pressure detector 35 monitors whether the air pressure in the detection space drops. If it drops, it indicates that the motor end cover 60 is unqualified. Of course, in other embodiments, the inflation time and pressure maintenance time can also be adjusted according to actual needs, and are not limited to this example.

[0038] The barometric pressure detector 35 can be designed according to actual needs, such as a barometric pressure sensor, a pneumatic gauge, etc.

[0039] To improve sealing, an elastic silicone sealant can be provided on the top of the sealing disc 31, and the motor end cover 60 abuts against the elastic silicone sealant, thereby improving the sealing of the detection space and avoiding damage to the appearance of the motor end cover 60.

[0040] In addition, since the motor end cover 60 is provided with multiple through holes for screws to pass through, the sealing disc 31 is also provided with multiple positioning rods that pass through the corresponding through holes.

[0041] To prevent the motor end cover 60 from shifting its position, in some optional embodiments, the fixed base 21 is provided with two clamping plates 25 located on both sides of the positioning part 24, and a reset elastic member 26 is connected between the clamping plates 25 and the fixed base 21; the first pressing base 22 is provided with two force-applying inclined surfaces 221. When the second pressing drive assembly 32 drives the first pressing base 22 to descend, the force-applying inclined surfaces 221 press against the clamping plates 25, so that the two clamping plates 25 move towards each other and cooperate to clamp the motor end cover 60. At this time, the reset elastic member 26 generates elastic deformation. The movement of the clamping plates 25 driven by the movement of the first pressing base 22 can effectively simplify the structure. The motor end cover 60 is stably clamped by two clamping plates 25, so that when the first pressing seat 22 presses the bearing onto the motor end cover 60, the motor end cover 60 is not easy to shift its position. After the bearing is pressed, the first pressing seat 22 rises, and the two clamping plates 25 move away from each other under the elastic force of the reset elastic member 26, so that the clamping plates 25 are disengaged from the motor end cover 60.

[0042] In some alternative embodiments, a force-bearing roller 27 is rotatably provided on the clamping plate 25. The force-applying inclined surface 221 drives the clamping plate 25 to move by pressing against the wheel surface of the force-bearing roller 27. When the first pressing seat 22 descends, the force-bearing roller 27 can roll along the guide inclined surface, thereby effectively reducing the friction between the guide inclined surface and the clamping plate 25.

[0043] Please see Figure 8This is a schematic diagram of one side of the airtightness testing mechanism according to another embodiment of the present invention. Since the pressing speed of the first pressing drive component 23 is difficult to control, in order to avoid the first pressing seat 22 impacting the bearing or motor end cover 60, in some optional embodiments, the first pressing seat 22 is provided with a pressing part 222, an elastic buffer 223 and a damping buffer 224. The pressing part 222 is connected to the first pressing seat 22 through the elastic buffer 223, and the damping buffer 224 is located between the first pressing seat 22 and the pressing part 222. Before the clamping part 222 contacts the bearing, the first pressing drive assembly 23 drives the first pressing seat 22 to descend at a relatively fast speed. This increases the speed at which the clamping part 222 approaches the bearing, effectively improving production efficiency. When the first pressing drive assembly 23 drives the first pressing seat 22 to descend to the first position, the clamping part 222 abuts against the bearing. As the first pressing seat 22 continues to descend, the elastic buffer 223 is squeezed by the clamping part 222 and undergoes elastic deformation, causing the clamping part 222 to gradually decelerate, thereby achieving... The first pressing part 222 acts as a buffer to prevent the pressing part 222 from impacting the bearing. When the first pressing drive assembly 23 drives the first pressing seat 22 to descend to the second position, the top of the pressing part 222 abuts against the damping buffer 224. The damping buffer 224 abuts against the pressing part 222 and is compressed by the pressing part 222. The damping buffer 224 further decelerates the pressing part 222, so that the pressing part 222 slowly presses the bearing into the workpiece, effectively improving the pressing quality and preventing the bearing from being pressed too quickly and damaging the motor end cover 60.

[0044] To facilitate the loading of the motor end cover 60 and the bearing, in some optional embodiments, the permanent magnet motor bearing pressing device further includes: a loading mechanism 40 disposed on one side of the frame 10, wherein the frame 10 is provided with a first guide rail 11 and a first translation drive assembly 12, the loading mechanism 40 places the motor end cover 60 and the bearing on the fixed seat 21, the fixed seat 21 is movably connected to the first guide rail 11, and the first translation drive assembly 12 is drivenly connected to the fixed seat 21 to drive the fixed seat 21 to move back and forth between the loading mechanism 40 and the first pressing seat 22 along the first guide rail 11.

[0045] Please see Figure 9This is a schematic diagram of the structure of the feeding mechanism according to an embodiment of the present invention. The structure of the feeding mechanism 40 can be selected according to actual needs. In some optional embodiments, the feeding mechanism 40 includes a positioning seat 41, a motor end cover 60 conveying assembly 42, a bearing conveying assembly 43, a first clamping assembly 44, and a second clamping assembly 45. The positioning seat 41 is disposed on the frame 10 and is used to position the motor end cover 60. The motor end cover 60 conveying assembly 42 and the bearing conveying assembly 43 are disposed on both sides of the positioning seat 41. The first clamping assembly 44 is disposed between the motor end cover 60 conveying assembly 42 and the positioning seat 41 and is used to clamp the motor end cover 60 on the motor end cover 60 conveying assembly 42 onto the positioning seat 41. The second clamping assembly 45 is disposed between the bearing conveying assembly 43 and the positioning seat 41 and is used to clamp the bearing on the bearing conveying assembly 43 onto the motor end cover 60 on the positioning seat 41.

[0046] The motor end cover 60 and the conveying assembly 42 can be mesh belt conveying assemblies, roller conveying assemblies, chain conveying assemblies, belt conveying assemblies, etc.

[0047] Please see Figure 10 This is a schematic diagram of the structure of a bearing conveying assembly according to an embodiment of the present invention. In some optional embodiments, the bearing conveying assembly 43 includes a bearing vibratory feeder 431, a bearing conveying groove 432, a pusher plate 433, and a second translation drive assembly 434. The bearing vibratory feeder 431 is connected to the bearing conveying groove 432. A first arc-shaped positioning part 435 is provided on the inner wall of the bearing conveying groove 432. The pusher plate 433 is disposed on one side of the bearing conveying groove 432. A second arc-shaped positioning part 436 is provided on the side of the pusher plate 433 facing the first arc-shaped positioning part 435. The second translation drive assembly 434... 4 is connected to the push plate 433 for driving the push plate 433 to move closer to or away from the second arc-shaped positioning part 436. The bearing enters the bearing conveying groove 432 from the bearing vibrating plate 431 and is conveyed through the bearing conveying groove 432 to the space between the first arc-shaped positioning part 435 and the second arc-shaped positioning part 436. Then, the second translation drive assembly 434 drives the push plate 433 to move towards the first arc-shaped positioning part 435, so that the first arc-shaped positioning part 435 and the second arc-shaped positioning part 436 cooperate to clamp the bearing. Then, the second clamping assembly 45 clamps the bearing onto the motor end cover 60 on the positioning seat 41. Of course, the structure of the bearing conveying assembly 43 is not limited to this, and those skilled in the art can choose other suitable structures according to the teachings of this invention.

[0048] In addition, a limit sensing cylinder 437 is provided in the bearing conveying groove 432. The limit sensing cylinder 437 restricts the bearing from passing through the bearing conveying groove 432 by means of a piston rod. After the bearing is clamped by the second clamping assembly 45, the limit sensing cylinder 437 releases the restriction on the bearing, so that the bearing sequentially reaches between the first arc-shaped positioning part 435 and the second arc-shaped positioning part 436.

[0049] In some optional embodiments, a waste area 13 is provided on one side of the frame 10. A first guide rail 11, a third translation drive assembly 14, and a third clamping assembly 15 are provided on the frame 10. The sealing disc 31 is movably connected to the first guide rail 11. The third translation drive assembly 14 is drivenly connected to the fixed seat 21 and is used to drive the fixed seat 21 to move back and forth between the second pressing seat 33 and the third clamping assembly 15 along the first guide rail 11. The third clamping assembly 15 is used to clamp the motor end cover 60 with unqualified airtightness on the sealing disc 31 to the waste area 13.

[0050] The first clamping assembly 44, the second clamping assembly 45, and the third clamping assembly 15 can be selected according to actual needs. In this embodiment, the first clamping assembly 44, the second clamping assembly 45, and the third clamping assembly 15 include an N-axis translation drive module, two clamping plates, and a cylinder. The cylinder drives the two clamping plates to clamp and cooperate, and the translation drive module drives the cylinder to translate. The N-axis translation drive module can be a one-axis translation drive module, a two-axis translation drive module, or a three-axis translation drive module according to actual needs. The structure and principle of the N-axis translation drive module are well known to those skilled in the art and will not be described in detail here.

[0051] Please see Figure 11This is a schematic diagram of the structure of the movable seat according to an embodiment of the present invention. In some optional embodiments, the permanent magnet motor bearing press-fitting device further includes: a press-fitting quality inspection mechanism 50 disposed on one side of the frame 10. The press-fitting quality inspection mechanism 50 includes a second guide rail 51, a movable seat 52 movably disposed on the second guide rail 51, and a vision inspection component 53 disposed above the second guide rail 51. The movable seat 52 moves closer to or further away from the vision inspection component 53 along the second guide rail 51. A positioning shaft 54 ​​and a rotary motor 55 are disposed on the movable seat 52. The rotary motor 55 is connected to the positioning shaft 54 ​​in a transmission manner. The airtightness-tested motor end cover 60 is placed on the movable base 52, and the bearing is engaged with the positioning shaft 54 ​​of the movable base 52. Then, the movable base 52 moves along the second guide rail 51 to below the vision inspection component 53. The rotary motor 55 drives the positioning shaft 54 ​​to rotate, thereby causing the motor end cover 60 and the bearing to rotate. The motor end cover 60 is usually circular. If there is a deviation in the press-fitting position of the bearing and the motor end cover 60, the axis of the bearing and the axis of the rotating shaft hole 61 of the motor end cover 60 will be misaligned. That is, the motor end cover 60 will be in an off-center position of the bearing. As a result, when the bearing rotates under the drive of the rotary motor 55, the outer diameter of the motor end cover 60 will appear to increase. The outer diameter value of the motor end cover 60 in the rotating state is detected by the vision inspection component 53. If the difference between the outer diameter value of the motor end cover 60 in the rotating state and the outer diameter value when not rotating is greater than a preset difference, it indicates that the motor end cover 60 is unqualified. If the bearing and motor end cover 60 are correctly press-fitted, the outer diameter of the motor end cover 60 when it is rotating under the drive of the rotary motor 55 will be the same as the outer diameter when it is not rotating. The operating principle and structure of the vision inspection component 53 are well known to those skilled in the art and will not be described in detail here. In this embodiment, if the difference between the outer diameter of the motor end cover 60 when it is rotating and the outer diameter when it is not rotating is greater than or equal to 0.15 mm, the motor end cover 60 is deemed unqualified. Of course, in other embodiments, the preset difference can be adjusted according to the actual quality requirements of the motor end cover 60.

[0052] In addition, the third clamping assembly 15 can also be used to clamp the airtight motor end cap 60 on the sealing disc 31 onto the movable seat 52.

[0053] In some alternative embodiments, a bushing is detachably fitted on the outer side of the positioning shaft 54, and the positioning shaft 54 ​​is engaged with the bearing through the bushing, thereby enabling the positioning shaft 54 ​​to engage with bearings of different models.

[0054] The first downward driving component 23, the second downward driving component 32, the first translational driving component 12, the second translational driving component 434, and the third translational driving component 14 can be selected according to actual needs. In this embodiment, the first downward driving component 23, the second downward driving component 32, the first translational driving component 12, the second translational driving component 434, and the third translational driving component 14 are all driving cylinders, so that the power source is consistent and it is beneficial to simplify the overall device structure. Of course, the first downward driving component 23, the second downward driving component 32, the first translational driving component 12, the second translational driving component 434, and the third translational driving component 14 can also be hydraulic cylinders, electric cylinders, etc.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet motor bearing press-fitting device, characterized by, The utility model relates to a bearing pressing device for motor end cover, comprising: a rack and a pressing mechanism and a gas tightness detection mechanism arranged in sequence on the rack; the pressing mechanism is used for pressing bearing into motor end cover, comprising fixed seat, first pressing seat and first pressing drive assembly, the fixed seat is arranged on the rack, the fixed seat is provided with positioning portion for positioning end cover, the first pressing seat is arranged above the fixed seat through the first pressing drive assembly and can be lifted and descended; the gas tightness detection mechanism is used for detecting the gas tightness of motor end cover, comprising sealing disc, second pressing drive assembly, second pressing seat, inflation hole and air pressure detector, the sealing disc is arranged on the rack and can form detection space with the bottom of motor end cover, the air pressure detector is connected with the sealing disc and communicates to the detection space, the second pressing seat is arranged above the sealing disc through the second pressing drive assembly and can be lifted and descended, the second pressing seat is provided with inflation hole communicating with the detection space; the first pressing seat is provided with pressing part, elastic buffer and damping buffer, the pressing part is connected with the first pressing seat through the elastic buffer, and the damping buffer is located between the first pressing seat and the pressing part; after the first pressing drive assembly drives the first pressing seat to descend to the first position, the pressing part abuts against bearing, the elastic buffer is extruded by the pressing part and produces elastic deformation, after the first pressing drive assembly drives the first pressing seat to descend to the second position, the damping buffer abuts against the pressing part and is compressed by the pressing part, the pressing part presses bearing into motor end cover, and the second position is lower than the first position.

2. The permanent magnet motor bearing press-fitting device according to claim 1, characterized in that: the fixed seat is provided with two clamping plates located on both sides of the positioning portion respectively, and reset elastic members are connected between the clamping plates and the fixed seat; the first pressing seat is provided with two force applying inclined surfaces, when the second pressing drive assembly drives the first pressing seat to descend, the force applying inclined surfaces correspondingly abut against the clamping plates to make the two clamping plates move towards each other and clamp motor end cover in cooperation.

3. The permanent magnet motor bearing press-fitting device according to claim 2, characterized in that: force receiving rollers are rotatably arranged on the clamping plates, and the force applying inclined surfaces drive the clamping plates to move by abutting against the wheel surfaces of the force receiving rollers.

4. The permanent magnet motor bearing press-fitting device according to any one of claims 1 to 3, characterized in that, Further comprising: a feeding mechanism arranged on one side of the rack, the rack is provided with first guide rail and first translation drive assembly, the fixed seat is movably connected with the first guide rail, and the first translation drive assembly is drivingly connected with the fixed seat and used for driving the fixed seat to move back and forth along the first guide rail between the feeding mechanism and the first pressing seat.

5. The permanent magnet motor bearing press fitting device according to claim 4, characterized in that: The feeding mechanism comprises a positioning seat, a motor end cover conveying assembly, a bearing conveying assembly, a first clamping assembly and a second clamping assembly. The positioning seat is arranged on the rack and used for positioning the motor end cover. The motor end cover conveying assembly and the bearing conveying assembly are arranged on the two sides of the positioning seat. The first clamping assembly is arranged between the motor end cover conveying assembly and the positioning seat and used for clamping the motor end cover on the motor end cover conveying assembly to the positioning seat. The second clamping assembly is arranged between the bearing conveying assembly and the positioning seat and used for clamping the bearing on the bearing conveying assembly to the positioning seat.

6. The permanent magnet motor bearing press-fitting device according to claim 5, characterized in that: The bearing conveying assembly comprises a bearing vibration disc, a bearing conveying groove, a pushing plate and a second translation driving assembly. The bearing vibration disc is connected with the bearing conveying groove. The inner wall of the bearing conveying groove is provided with a first arc-shaped positioning part. The pushing plate is arranged on one side of the bearing conveying groove. The side of the pushing plate facing the first arc-shaped positioning part is provided with a second arc-shaped positioning part. The second translation driving assembly is drivingly connected with the pushing plate and used for driving the pushing plate to move close to or away from the second arc-shaped positioning part.

7. A kind of permanent magnet machine bearing press fitting device according to any one of claims 1 to 3, characterized by: One side of the rack is provided with a waste area. The rack is provided with a first guide rail, a third translation driving assembly and a third clamping assembly. The sealing disc is movably connected with the first guide rail. The third translation driving assembly is drivingly connected with the fixed seat and used for driving the fixed seat to move back and forth along the first guide rail between the second pressing seat and the third clamping assembly. The third clamping assembly is used for clamping the motor end cover with poor air tightness on the sealing disc to the waste area.

8. A permanent magnet machine bearing press fitting device according to any one of claims 1 to 3, characterized in that, Further comprising: A press-fitting quality detection mechanism arranged on one side of the rack. The press-fitting quality detection mechanism comprises a second guide rail, a moving seat movably arranged on the second guide rail and a visual detection assembly arranged above the second guide rail. The moving seat moves close to or away from the visual detection assembly along the second guide rail. The moving seat is provided with a positioning shaft and a rotating motor. The positioning shaft is used for clamping the bearing. The rotating motor is drivingly connected with the positioning shaft.

9. The permanent magnet motor bearing press fitting device according to claim 8, characterized in that: The outer side of the positioning shaft is detachably sleeved with a bushing. The positioning shaft is clamped with the bearing through the bushing.

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