CN211991717U

CN211991717U - Motor rotor core shaft pressing device

Info

Publication number: CN211991717U
Application number: CN201922447812.1U
Authority: CN
Inventors: 谢炜; 高兰香; 王家祥
Original assignee: Shanghai Taichong Electric Co ltd
Current assignee: Shanghai Taichong Electric Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-24
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to the technical field of motors, a motor rotor core last item device is disclosed, including the base, locate a pair of branch on this base, truss upper plate on this pair of branch, locate the pressurized cylinder on this upper plate to and the truss is on this pair of branch and be equipped with the fly leaf of last item piece, its characterized in that: the base is also provided with a tool seat which is provided with a chute and used for placing the iron core, and the fixed-angle card can be freely inserted into and pulled out of the chute. The utility model has the beneficial effects that the chute is arranged on the iron core placing tool seat, and the chute formed by the chute and the rotor iron core is inserted by utilizing the fixed-angle card, so that the angle between the central axis of the pressing shaft process and the chute of the iron core is corrected, and the oblique angle of the rotor assembly is further ensured to be within 7 +/-0.1 degrees. Finally, the press fitting efficiency and the product percent of pass are improved, and the motor performance is greatly improved.

Description

Motor rotor core shaft pressing device

Technical Field

The utility model relates to the technical field of motors, especially indicate a motor rotor core last item device.

Background

To the processing of motor rotor chute iron core pressure axle, there can generally be the chute in the space can not the alignment, the angle between chute and the axis is wayward simultaneously, leads to behind the pressure axle that the chute is not straight and the contained angle between chute and the axis is unstable, and then makes the difficult control of rotor wire winding quality, motor performance unstability.

Therefore, the inventor provides a motor rotor iron core shaft pressing device which can effectively solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an invention iron core last item device of motor rotor, its simple structure, convenient operation to can improve the motor performance by a wide margin.

In order to realize the technical characteristics, the utility model discloses a structural scheme is: the device comprises a base, a pair of supporting rods arranged on the base, an upper plate truss on the supporting rods, a pressurizing cylinder arranged on the upper plate, and a movable plate truss on the supporting rods and provided with a pressing shaft block, wherein at least one pair of sleeves capable of freely sliding up and down along the supporting rods are arranged on the movable plate, and a pressure sensor assembly is also arranged on the movable plate;

the base is also provided with a tool seat which is provided with a chute and used for placing the iron core, and the fixed-angle card can be freely inserted into and pulled out of the chute. The vertical included angle of the chute is alpha, after the shaft is pressed, the vertical included angle between the fixed-angle clamping piece and the chute is beta, the alpha is 6.7 degrees, and the beta is 0-0.4 degrees;

the device also comprises a set of cylindrical depth mark rods, wherein the cylindrical depth mark rods are sleeved on the shaft when the shaft is pressed, the bottom of the cylindrical depth mark rods is finally contacted with the upper surface of the tool seat, and the length (L mark rods) is equal to the shaft length (L shaft) -the height (H iron core) of the iron core after the shaft is pressed;

and the base is also provided with a displacement sensor for sensing the vertical displacement distance of the movable plate.

The utility model has the beneficial effects that the chute is arranged on the iron core placing tool seat, and the chute formed by the chute and the rotor iron core is inserted by utilizing the fixed-angle card, so that the angle between the central axis of the pressing shaft process and the chute of the iron core is corrected, and the oblique angle of the rotor assembly is further ensured to be within 7 +/-0.1 degrees. Finally, the press fitting efficiency and the product percent of pass are improved, and the motor performance is greatly improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the adaptive structure of the middle tool seat 8 and the fixed-angle clamping sheet 9 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.

Referring to fig. 1-2, the utility model provides a motor rotor core last item device, the device includes base 1. A pair of supporting rods 2 which are parallel to each other are vertically and fixedly arranged on the base 1, and an upper plate 3 which is parallel to the base 1 is arranged on the supporting rods 2 in a truss mode and is fixed. A 2T gas-liquid pressure cylinder is adopted as the pressure cylinder 4, and pressure displacement monitoring is carried out;

the truss is further provided with a movable plate 5 which is parallel to the base 1 and is positioned below the upper plate 3 on the pair of supporting rods 2, and the movable plate 5 is movably connected with the supporting rods 2 through a pair of sleeves 51 which are arranged on the movable plate and can freely slide up and down along the pair of supporting rods 2. A pressure sensor 52 is fixedly mounted on the upper surface of the movable plate 5, and the pressure sensor 52 is in contact with the power output end of the supercharge cylinder 4 to sense the pressure value. A shaft pressing block 53 is fixedly installed on the lower surface of the movable plate 5 for pressing one end of the motor shaft 6 into the rotor core 7, and the rotor core 7 is provided with an inclined groove 71;

the base 1 is also fixedly provided with a tool seat 8 which is provided with a chute 81 and used for placing the rotor core 7, and the tool seat is cylindrical. A fixed-angle card 9 is freely inserted into and removed from the inclined grooves 71 and 81. The inclined groove 81 has a vertical angle α with the vertical direction (i.e., the Y-axis direction), and after pressing the shaft, the angle between the fixed-angle card 9 and the inclined groove 81 is β, where α is 6.7 ° and β is 0 ° to 0.4 °. The invention aims to solve the problem that after the motor shaft 6 is pressed into the rotor core 7, the angle of the inclined groove 71 on the rotor core 7 must be controlled within the range of 7 +/-0.1 degrees so as to meet the use requirement of the motor. Therefore, the rotor core 7 is generally formed by riveting and buckling stamped silicon steel sheets, and a weak gap exists between the laminations, so that the height of the laminations of the rotor core 7 before the shaft is pressed is larger than the height of the laminations after the shaft is pressed. From the measurements of the heights of the punched laminations, it was found that the height of the rotor core 7 before the shaft pressing was distributed between 46.8mm and 47.2mm, while the height of the rotor core 7 after the shaft pressing was typically 45mm in the middle. The formula of the inner triangle of the right triangle can be calculated as follows: after pressing the shaft, tan7 ° x 45mm is 5.5253 mm; the median height value of the rotor core 7 in front of the pressure taking shaft is as follows: 47mm (rounded off from 46.8 mm), tan6.7 degrees x 47 is 5.5212mm, and the error before and after pressing the shaft is controlled within a few filaments. Therefore, the bevel angle of the chute 71 on the rotor core 7 in front of the pressure taking shaft is 6.7 degrees, which can finally meet the design requirement that the bevel angle of the chute 71 on the rotor core 7 behind the pressure taking shaft is between 7 degrees +/-0.1 degrees;

the device still includes a set of tube-shape degree of depth sighting rod 10, and it is arranged in motor shaft 6 in the cover during pressure axle, and its bottom finally contacts with the upper surface of frock seat 8, and its length (L sighting rod) is axle length (L axle) -presses the axle back iron core height (H iron core). Therefore, the length of the depth mark bar 10 can be used to complement the dimension of the motor shaft 6 pressed into the rotor core 7;

a displacement sensor 11 for sensing the vertical displacement distance of the movable plate 5 is also mounted on the base 1.

The working steps of the patent are as follows:

firstly, putting a rotor core 7 to be pressed into a tool seat 8, and aligning a chute 71 with a chute 81;

secondly, inserting the fixed-angle cards 9 into the inclined grooves 81 and 71 in sequence, wherein the fixed-angle cards 9 have moving spaces in the two inclined grooves;

thirdly, inserting one end of a motor shaft 6 to be pressed into the rotor core 7, and sleeving the depth mark rod 10 on the motor shaft 6;

and fourthly, starting a two-hand switch for controlling the pressurizing cylinder 4, enabling the pressurizing cylinder 4 to start working and push the movable plate 5 and the pressing shaft block 53 to move downwards, and when the pressure sensor 52 senses a pressure signal that the pressing shaft block 53 presses the motor shaft 6, enabling the pressurizing cylinder 4 to start gradually pressurizing, enabling the pressure to reach 1T and maintaining the pressure for 5s, and enabling the movable plate 5 and the pressing shaft block 53 to continue to move downwards. When the shaft pressing block 53 is in contact with the depth mark rod 10, the booster cylinder 4 stops working, and the shaft pressing work is completed. During this gradual pressurization, since the gaps between the laminations of the rotor core 7 are gradually compacted by the press-fitting of the motor shaft 6, the skew angle of the inclined groove 71 gradually shifts from the initial 6.7 ° to the range of 7 ° ± 0.1 °. The card 9 is rotated (because the width of the chute 81 is larger than that of the card 9, providing space for the rotation), and the angle between the chute 81 and the card is gradually changed from 0 degree (namely, the vertical angle is 6.7 degrees, which is the value of the set vertical angle alpha of the chute 81) during insertion to beta angle which is less than or equal to 0.4 degree (because the design requires that the oblique angle of the chute 71 after pressing the shaft is kept in the range of 7 degrees +/-0.1 degrees, the beta angle is not more than 0.4 degrees at most).

The utility model discloses an open on placing frock seat 8 of rotor core 7 and put chute 81 to utilize fixed angle card 9 to insert the chute 71 that this chute 81 and rotor core 7 formed, revise the angle between last item process axis and the chute 71, and then ensure that the oblique angle of rotor subassembly is in 7 +/-0.1. Finally, the press fitting efficiency and the product percent of pass are improved, and the motor performance is greatly improved.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. The utility model provides a motor rotor core last item device, includes the base, locates a pair of branch on this base, truss upper plate on this pair of branch, locate the pressurized cylinder on this upper plate to and the truss just is equipped with the fly leaf of last item piece, its characterized in that on this pair of branch: the base is also provided with a tool seat which is provided with a chute and used for placing the iron core, and the fixed-angle card can be freely inserted into and pulled out of the chute.

2. The motor rotor core shaft pressing device according to claim 1, wherein a vertical included angle of the inclined groove is α, an included angle between the fixed-angle clamping piece and the inclined groove after shaft pressing is β, the α is 6.7 °, and the β is 0 ° to 0.4 °.

3. The electric motor rotor core shaft pressing device according to claim 1, wherein at least one pair of sleeves capable of freely sliding up and down along the supporting rod are arranged on the movable plate, and a pressure sensor assembly is further arranged on the movable plate.

4. The motor rotor core shaft pressing device according to claim 1, wherein a displacement sensor for sensing a vertical displacement distance of the movable plate is further arranged on the base.

5. The device for pressing the shaft of the rotor core of the motor as claimed in claim 1, further comprising a set of cylindrical depth mark bars, wherein the depth mark bars are sleeved on the shaft when the shaft is pressed, the bottom of the depth mark bars is finally contacted with the upper surface of the tool seat, and the length of the L mark bars is equal to the length of the L shaft and the height of the iron core after the shaft is pressed by the H iron core.