CN112072863B

CN112072863B - Prevent motor assemblage tool of bearing damage

Info

Publication number: CN112072863B
Application number: CN201910499492.6A
Authority: CN
Inventors: 陈佳晋
Original assignee: Wuxi Dongjing Electric Micro Motor Co ltd
Current assignee: Wuxi Dongjing Electric Micro Motor Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2024-01-12
Anticipated expiration: 2039-06-11
Also published as: CN112072863A

Abstract

The invention discloses a motor assembly jig for preventing bearing damage, which comprises a frame body, a guide shaft hole, a gasket, a spring and a lower cover, wherein the lower surface of the frame body is fixedly connected with the lower cover, a groove corresponding to a motor flange is formed in the center of the upper surface of the frame body, an axle center hole is formed in the connection of the upper surface of the frame body and the groove, the guide shaft hole is formed in the connection of the front end of the axle center hole and the groove, a step surface is formed in the rear end of the guide shaft hole, the spring is arranged in the axle center hole, the gasket is arranged between the top end of the spring and the step surface, the bottom end of the spring is in contact with the lower cover, the concentricity of the guide axle center arranged by the assembly jig can be increased, the assembly is optimized, meanwhile, the attractive force between a rotor and a stator can be buffered by the buffer action of the spring, the bearing is prevented from being damaged, the rotor and the stator are prevented from being damaged, and the service life of the motor is prolonged.

Description

Prevent motor assemblage tool of bearing damage

Technical Field

The invention belongs to the field of motor assembly, and particularly relates to a motor assembly jig capable of preventing bearing damage.

Background

The assembly of the motor stator and the rotor usually adopts a manual assembly mode, and because the stator and the rotor have opposite magnetic fields, the positioning accuracy of the stator and the rotor is poor in the manual assembly process, so that the coaxiality and cylindricity matching error of the motor are large, a plurality of steps are required for completing the assembly, the assembly efficiency is low, and the requirement of mass production cannot be met.

In the motor assembly, the rotor is placed in the stator and fixed by adding the front cover and the rear cover, and most of low-power motors are directly placed in the teeth, so that the bearings are easily damaged. The permanent magnet motor is characterized in that the rotor is provided with the magnet, the rotor is placed in the stator, the rotor is attracted by magnetic force to cause rapid displacement, and the bearing is easy to collide with the bearing seat, so that the bearing balls are damaged.

The application number is: CN201120488337.3, 20111130 as filed date: in the patent of the motor stator and rotor assembling machine, a motor stator and rotor assembling machine is disclosed, which comprises a base, wherein a stator clamping device is arranged on the base, and a rotor pressing-in device is arranged at the upper part of the stator clamping device; the stator clamping device comprises a base clamping part which is matched with the stator structure, and the lower part of the base clamping part is connected with an air cylinder; the rotor pressing-in device comprises a first structural rod vertical to the base, a second structural rod vertically connected with the first structural rod, a cylinder fixed on the second structural rod and connected with a rotor pressing-in clamp, and the rotor pressing-in clamp vertically corresponds to the base clamping part.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the motor assembly jig for preventing bearing damage.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a prevent motor assemblage tool of bearing damage, includes framework 1, guide shaft hole 6, gasket 3, spring 4, lower cover 7, the fixed surface is connected lower cover 7 under the framework 1, framework 1 upper surface center department is equipped with the recess 2 that corresponds with the motor flange, is connected with recess 2 and sets up axle center hole 8, axle center hole 8 front end and recess 2 junction are equipped with guide shaft hole 6, guide shaft hole 6 rear end is equipped with the step face, step face rear end is equipped with spring 4, spring 4 sets up in axle center hole 8, be equipped with gasket 3 between spring 4 top and the step face, spring 4 bottom and lower cover 7 contact.

Preferably, a hollow groove 9 is arranged at the rear end of the shaft center hole 8, and the hollow groove 9 is arranged on the lower surface of the frame body 1.

More preferably, the hollow groove 9 has a larger diameter than the axial hole 8.

Preferably, a circular groove 71 is arranged at the center of the lower cover 7, and the bottom of the spring 4 is contacted with the lower cover 7 through the circular groove 71.

Preferably, the lower cover 7 is fixed in the screw hole of the frame 1 by a screw 5.

Preferably, 4 screws 5 are provided, and 4 screws 5 are respectively arranged at four corners of the lower cover 7.

Preferably, a chamfer is arranged at the edge of the frame body 1.

The invention has the beneficial effects that:

the guide axle center that this assemblage tool was equipped with can increase concentricity, optimizes the equipment, and the buffer action of spring can cushion the attractive force between rotor and the stator simultaneously, avoids motor bearing to hit the injury, avoids damaging rotor and stator, extension motor's life.

Drawings

Fig. 1 is a schematic cross-sectional view of a motor assembly fixture for preventing bearing damage.

Fig. 2 is a front view of a motor assembly jig for preventing bearing damage.

Fig. 3 is an exploded view of a motor assembly fixture for preventing bearing damage, in which: 10-motor.

Detailed Description

The technical scheme of the invention is further described with reference to the accompanying drawings 1-2:

In this embodiment, preferably, a hollow groove 9 is provided at the rear end of the axial hole 8, and the hollow groove 9 is provided on the lower surface of the frame 1.

In this embodiment, it is more preferable that the hollow groove 9 has a larger diameter than the axial hole 8.

The diameter of the front axle center hole 8 can fix the position of the spring, and the rear end is provided with the hollow groove 9, so that the buffer capacity of the spring can be increased, and the material is saved.

In this embodiment, preferably, a circular groove 71 is provided at the center of the lower cover 7, and the bottom of the spring 4 contacts the lower cover 7 through the circular groove 71.

The arrangement ensures that the bottom of the spring is fixed and can not shake and shift.

In this embodiment, the lower cover 7 is preferably fixed to the screw hole of the frame 1 by a screw 5.

In this embodiment, preferably, 4 screws 5 are provided, and 4 screws 5 are respectively provided at four corners of the lower cover 7.

In this embodiment, preferably, a chamfer is provided at the edge of the frame 1.

The guide axle center that this assemblage tool was equipped with can increase concentricity, optimizes the equipment, and the buffer action of spring can cushion the attractive force between rotor and the stator simultaneously, avoids the bearing to hit the injury, avoids damaging rotor and stator, prolongs motor's life. The jig has a simple structure, and the installation method does not need to be changed.

As shown in fig. 3, wherein reference numeral 10 is an electric motor.

When the stator is used, the stator is placed at the groove 2, and then the rotor is placed, so that the rotor magnet and the stator silicon steel sheet have attractive force, and the bearing can be damaged due to the fact that the bearing is impacted against the bearing seat under the action of the buffer spring 4 when the stator is placed. Wherein, the guiding shaft hole 6 has the guiding shaft center effect, and the rotor is prevented from being offset due to the attraction of magnetic force when the rotor is put into the stator.

Finally, it should be noted that:

in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present 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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Prevent motor group's tool of bearing damage, its characterized in that:

the novel motor comprises a frame body (1), a guide shaft hole (6), a gasket (3), a spring (4) and a lower cover (7), wherein the lower surface of the frame body (1) is fixedly connected with the lower cover (7), a groove (2) corresponding to a motor flange is arranged in the center of the upper surface of the frame body (1), an axle center hole (8) is arranged in connection with the groove (2), the guide shaft hole (6) is arranged at the joint of the front end of the axle center hole (8) and the groove (2), a step surface is arranged at the rear end of the guide shaft hole (6), the spring (4) is arranged at the rear end of the step surface, the spring (4) is arranged in the axle center hole (8), the gasket (3) is arranged between the top end of the spring (4) and the step surface, and the bottom end of the spring (4) is in contact with the lower cover (7);

and a chamfer is arranged on one side of the guide shaft hole (6) close to the groove (2).

2. The motor assembly jig of claim 1, wherein: the rear end of the axle center hole (8) is provided with a hollow groove (9), and the hollow groove (9) is arranged on the lower surface of the frame body (1).

3. The electric machine assembly jig of claim 2, wherein: the diameter of the hollow groove (9) is larger than that of the axle center hole (8).

4. The motor assembly jig of claim 1, wherein: the center of the lower cover (7) is provided with a circular groove (71), and the bottom of the spring (4) is contacted with the lower cover (7) through the circular groove (71).

5. The motor assembly jig of claim 1, wherein: the lower cover (7) is fixed in a threaded hole of the frame body (1) through a screw (5).

6. The motor assembly jig of claim 5, wherein: the number of the screws (5) is 4, and the 4 screws (5) are respectively arranged at four corners of the lower cover (7).

7. The motor assembly jig of claim 1, wherein: the edge of the frame body (1) is provided with a chamfer.