An automatic pressing device for lower bearings of motors

Abstract

This utility model discloses an automatic pressing device for a lower bearing of a motor, applied in the field of automatic bearing pressing devices. The key technical features are: a base; a housing positioning assembly for positioning the housing and placing the lower bearing of the motor is fixedly connected to the base; a pressing abutment assembly for simultaneously abutting the housing and the rotor end to prevent rotor movement is movably connected above the housing positioning assembly; and a pressing rod for pressing the lower bearing of the motor into the housing is movably connected vertically below the housing positioning assembly based on a lifting pressing cylinder. The technical advantages are: simple structure and guaranteed assembly accuracy of the motor.

Description

Technical Field

[0001] This utility model relates to the field of automatic bearing pressing devices, and in particular to an automatic pressing device for motor bearings. Background Technology

[0002] A brushless motor includes components such as end caps, circuit boards, rotor assemblies, stator assemblies, and housings. The rotor assembly is installed in the housing via upper and lower bearings located at both ends. For the assembly of modern brushless motors, the upper bearings and rotor assembly must first be assembled into the housing, and then the lower bearing of the motor is press-fitted into the housing. However, it is necessary to ensure that the rotor position remains fixed during the press-fitting process.

[0003] Existing press-fit assemblies typically invert the housing on the machine tool when pressing the lower bearing of a motor. The bearing is then placed on the housing and pressed down by a hydraulic cylinder to press the lower bearing into the housing. However, this process also puts pressure on the rotor assembly and the upper bearing, causing changes in the rotor position and affecting the assembly accuracy of the motor. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide an automatic pressing device for the lower bearing of a motor, which has the advantages of simple structure and ensures the assembly accuracy of the motor.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic pressing device for a lower bearing of a motor, comprising a base; a housing positioning component for positioning the housing and placing the lower bearing of the motor is fixedly connected on the base; a pressing abutment component for simultaneously abutting the housing and the rotor end to prevent rotor movement is movably connected above the housing positioning component on the base; and a pressing rod for pressing the lower bearing of the motor into the housing is movably connected in the vertical direction below the housing positioning component on the base based on a lifting pressing cylinder.

[0006] The present invention is further configured such that: the housing positioning assembly includes a mounting base fixedly connected to the base in a horizontal direction and a positioning cylinder fixedly connected to the mounting base for positioning the lower bearing of the motor; a plurality of abutment support rods for abutting and supporting the lower end face of the housing are fixedly connected to the mounting base; and positioning pins protrude and are fixedly connected to the abutment support rods for cooperating with the mounting holes on the housing to achieve housing positioning.

[0007] The present invention is further configured such that: the pressing and abutting assembly includes a pressing cylinder fixedly connected to the base in the vertical direction and a pressing seat fixedly connected to the telescopic end of the pressing cylinder; a plurality of housing abutting rods for abutting the upper end face of the housing and thus abutting the housing to the abutting support rod are fixedly connected to the pressing seat in the vertical direction; and a rotor abutting rod for abutting the rotor end and thus preventing the rotor from moving upward during the pressing process is also fixedly connected to the pressing seat.

[0008] The present invention is further configured such that: at least one downward pressure guide rod is fixedly connected to the downward pressure seat along the vertical direction, and a downward pressure guide sleeve is fixedly connected to the base to cooperate with the downward pressure guide rod to ensure downward pressure stability.

[0009] The present invention is further configured such that: a magnetostrictive linear displacement sensor for detecting the lifting height of the lifting and pressing cylinder is fixedly connected to the base along the vertical direction, and the detection end of the magnetostrictive linear displacement sensor is fixedly connected to the extension end of the lifting and pressing cylinder based on the connecting plate.

[0010] The present invention is further configured such that a pressure sensor is fixedly connected between the top pressure rod and the telescopic end of the lifting and pressing cylinder.

[0011] The present invention is further configured such that a laser sensor for detecting the position of the housing is fixedly connected to the base.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. The housing and lower bearing of the motor are precisely positioned using the housing positioning assembly. The abutment support rod and positioning pin work together with the housing mounting holes to achieve stable positioning of the housing. The positioning cylinder ensures the bearing placement accuracy. At the same time, the pressing abutment assembly is driven by the pressing cylinder to press the pressing seat. The housing abutment rod fixes the housing to the abutment support rod, and the rotor abutment rod abuts the rotor end to prevent the rotor from moving upward during pressing. The pressing guide rod and guide sleeve ensure the pressing stability. The lifting pressing cylinder drives the pressing rod to push the bearing into the housing. The pressure sensor monitors the pressure in real time, and the magnetostrictive linear displacement sensor detects the lifting height. This avoids the positional displacement caused by the pressure on the rotor assembly and upper bearing in traditional inverted pressing, thus ensuring the motor assembly accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0015] Figure 2 yes Figure 1 Enlarged schematic diagram of part A;

[0016] Figure 3This is an exploded view of the housing positioning assembly in this embodiment;

[0017] Figure 4 This is a schematic diagram of the lifting and pressurizing cylinder in this embodiment.

[0018] Reference numerals: 1. Base; 2. Housing positioning assembly; 21. Mounting seat; 22. Positioning cylinder; 23. Abutment support rod; 24. Positioning pin; 3. Lifting and pressing cylinder; 4. Pressing and abutting assembly; 41. Pressing cylinder; 42. Pressing seat; 43. Housing abutment rod; 44. Rotor abutment rod; 45. Pressing guide rod; 46. Pressing guide sleeve; 5. Top pressure rod; 6. Magnetostrictive linear displacement sensor; 7. Connecting plate; 8. Pressure sensor; 9. Laser sensor; 10. Housing; 11. Rotor; 12. Mounting hole. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Example:

[0021] refer to Figures 1 to 4 An automatic pressing device for a lower motor bearing includes a base 1. A housing positioning assembly 2 for positioning a housing 10 and placing the lower motor bearing is fixedly connected to the base 1. A pressing abutment assembly 4 for simultaneously abutting the housing 10 and the end of a rotor 11 to prevent the rotor 11 from moving is movably connected to the base 1 directly above the housing positioning assembly 2. A pressing rod 5 for pressing the lower motor bearing into the housing 10 is movably connected to the base 1 vertically along the direction based on a lifting pressing cylinder 3 below the housing positioning assembly 2. The pressing rod 5 presses the lower motor bearing into the housing 10 from the bottom. The lifting mechanism pushes the lower bearing of the motor into the housing 10, and simultaneously abuts the housing 10 and the rotor end through the pressing abutment component 4. This avoids the positional displacement caused by the pressure on the rotor 11 assembly and upper bearing caused by traditional inverted pressing. It also facilitates the loading and unloading of materials from the housing 10. A pressure sensor 8 is fixedly connected between the pressing rod 5 and the telescopic end of the lifting pressing cylinder 3. A laser sensor 9 for detecting the positioning status of the housing 10 is fixedly connected to the base 1, thereby preventing damage to the equipment caused by pressing the housing 10 before it is properly installed.

[0022] refer to Figure 1 and Figure 3Specifically, the housing positioning assembly 2 includes a mounting base 21 fixedly connected to the base 1 along the horizontal direction and a positioning cylinder 22 fixedly connected to the mounting base 21 for positioning the lower bearing of the motor. Several abutment support rods 23 are fixedly connected to the mounting base for abutting and supporting the lower end face of the housing 10. Positioning pins 24 are protruding and fixedly connected to the abutment support rods 23 for cooperating with the mounting holes 12 on the housing 10 to achieve positioning of the housing 10. The housing positioning assembly 2 accurately positions the housing 10 and the lower bearing of the motor. The abutment support rods 23 and the positioning pins 24 cooperate with the mounting holes 12 of the housing 10 to achieve stable positioning of the housing 10, and the positioning cylinder 22 ensures the bearing placement accuracy.

[0023] refer to Figure 1 and Figure 2 Specifically, the pressing and abutting assembly 4 includes a pressing cylinder 41 fixedly connected to the base 1 in the vertical direction and a pressing seat 42 fixedly connected to the telescopic end of the pressing cylinder 41. Several housing abutting rods 43 are fixedly connected to the pressing seat 42 in the vertical direction to abut against the upper surface of the housing 10, thereby abutting the housing 10 against the abutting support rod 23. A rotor abutting rod 4 is also fixedly connected to the pressing seat 42 to abut against the end of the rotor 11, thereby preventing the rotor 11 from moving upwards during the pressing process. 4. The pressing and abutting assembly 4 drives the pressing seat 42 through the pressing cylinder 41. The housing abutting rod 43 fixes the housing 10 on the abutting support rod 23. The rotor abutting rod 44 abuts the end of the rotor 11 to prevent the rotor 11 from moving upward during pressing. At the same time, the pressing guide rod 45 and the guide sleeve ensure the pressing stability. At least one pressing guide rod 45 is fixedly connected to the pressing seat 42 along the vertical direction. The base 1 is fixedly connected to the pressing guide sleeve 46, which cooperates with the pressing guide rod 45 to ensure the pressing stability.

[0024] refer to Figure 1 and Figure 4 Specifically, a magnetostrictive linear displacement sensor 6 for detecting the lifting height of the lifting cylinder 3 is fixedly connected to the base 1 along the vertical direction. The detection end of the magnetostrictive linear displacement sensor 6 is fixedly connected to the extension end of the lifting cylinder 3 based on the connecting plate 7.

[0025] Brief description of the usage process: The housing 10 and the lower bearing of the motor are precisely positioned by the housing positioning component 2. The abutment support rod 23 and the positioning pin 24 cooperate with the mounting hole 12 of the housing 10 to achieve stable positioning of the housing 10. The positioning cylinder 22 ensures the placement accuracy of the bearing. At the same time, the pressing abutment component 4 drives the pressing seat 42 through the pressing cylinder 41. The housing abutment rod 43 fixes the housing 10 on the abutment support rod 23. The rotor abutment rod 44 abuts the end of the rotor 11 to prevent the rotor 11 from moving upward during pressing. At the same time, the pressing guide rod 45 and the guide sleeve ensure the stability of the pressing. The lifting pressing cylinder 3 drives the pressing rod 5 to push the bearing into the housing 10.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An automatic press-fitting device for a motor lower bearing, comprising a base (1); characterized in that, The base (1) is fixedly connected to a housing positioning assembly (2) for positioning the housing (10) and positioning the lower bearing of the motor. The base (1) is movably connected above the housing positioning assembly (2) to a pressing abutment assembly (4) for simultaneously abutting the housing (10) and the end of the rotor (11) to prevent the rotor (11) from moving. The base (1) is movably connected below the housing positioning assembly (2) to a pressing rod (5) for pressing the lower bearing of the motor into the housing (10) based on a lifting pressing cylinder (3) in the vertical direction.

2. The automatic press fitting device for the lower bearing of an electric machine according to claim 1, characterized in that, The housing positioning assembly (2) includes a mounting base (21) fixedly connected to the base (1) in the horizontal direction and a positioning cylinder (22) fixedly connected to the mounting base (21) for positioning the lower bearing of the motor. The mounting base (21) is fixedly connected to a plurality of abutment support rods (23) for abutting and supporting the lower end face of the housing (10). The abutment support rods (23) are fixedly connected to a positioning pin (24) for cooperating with the mounting hole (12) on the housing (10) to achieve positioning of the housing (10).

3. The automatic press fitting device for the lower bearing of an electric machine according to claim 2, characterized in that, The pressing and abutting assembly (4) includes a pressing cylinder (41) fixedly connected to the base (1) in the vertical direction and a pressing seat (42) fixedly connected to the telescopic end of the pressing cylinder (41). The pressing seat (42) has a plurality of housing abutting rods (43) fixedly connected in the vertical direction for abutting the upper end face of the housing (10) to abut the housing (10) against the abutting support rod (23). The pressing seat (42) also has a rotor abutting rod (44) fixedly connected for abutting the end of the rotor (11) to prevent the rotor (11) from moving upward during the pressing process.

4. The automatic press fitting device for the lower bearing of an electric machine according to claim 3, characterized in that, At least one downward pressure guide rod (45) is fixedly connected to the downward pressure seat (42) along the vertical direction, and a downward pressure guide sleeve (46) is fixedly connected to the base (1) to cooperate with the downward pressure guide rod (45) to ensure downward pressure stability.

5. The automatic press fitting device for the lower bearing of an electric machine according to claim 1, characterized in that, A magnetostrictive linear displacement sensor (6) for detecting the lifting height of the lifting cylinder (3) is fixedly connected to the base (1) along the vertical direction. The detection end of the magnetostrictive linear displacement sensor (6) is fixedly connected to the extension end of the lifting cylinder (3) based on the connecting plate (7).

6. The automatic pressing device for the lower bearing of a motor according to claim 1, characterized in that, A pressure sensor (8) is fixedly connected between the top pressure rod (5) and the telescopic end of the lifting and pressing cylinder (3).

7. The automatic pressing device for the lower bearing of a motor according to claim 1, characterized in that, A laser sensor (9) for detecting the position of the housing (10) is fixedly connected to the base (1).

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