CN214125095U - Shaft pressing tool - Google Patents
Shaft pressing tool Download PDFInfo
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- CN214125095U CN214125095U CN202022850518.8U CN202022850518U CN214125095U CN 214125095 U CN214125095 U CN 214125095U CN 202022850518 U CN202022850518 U CN 202022850518U CN 214125095 U CN214125095 U CN 214125095U
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- shaft
- sleeve
- rotor core
- main shaft
- shaft sleeve
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Abstract
The utility model relates to a shaft pressing tool, which comprises an upper shaft sleeve, a limiting sleeve and a lower shaft sleeve which are sequentially arranged from top to bottom along the axial direction of a main shaft, wherein the upper shaft sleeve, the limiting sleeve and the lower shaft sleeve are respectively provided with a first through hole, a second through hole and a third through hole which are matched with the main shaft; the upper end of the lower shaft sleeve is provided with an annular boss, the inner edge and the outer edge of the upper end face of the annular boss are provided with chamfers or rounded circles, and the upper end face of the annular boss is matched with the circular concave table of the rotor core; one side of the limiting sleeve, facing the rotor core, extends into the rotor core and is abutted against the circular concave table of the rotor core, and one side of the limiting sleeve, facing away from the rotor core, is matched with the lower end face of the upper shaft sleeve; the inner edge of the lower end surface of the upper shaft sleeve is rounded. The main shaft and the rotor core are coaxial in the shaft pressing process, the main shaft is prevented from being pressed to pass the head, and the main shaft is protected from being pressed to deform and the rotor core is protected from being damaged.
Description
Technical Field
The utility model relates to an electric motor rotor makes the field, concretely relates to last item frock.
Background
The traditional motor rotor shaft pressing tool has no radial limit measure, and the main shaft is easy to incline in the pressing process, so that the coaxiality of the main shaft and an iron core is poor; the axial direction has no limit measure, so that the phenomenon of pressing the main shaft over the head is easy to occur, and particularly, the main shaft is pressed to deform; the pressing machine is adopted to directly press the shaft extension end part of the main shaft, and the shaft extension end part is easy to deform due to the fact that the diameter of the shaft extension end part is generally small; the traditional shaft pressing tool does not fully consider the factor of interference fit pressure release, and the rotor iron core is easy to expand or the silicon steel sheets are layered.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide a last item frock to solve the last item in-process axiality poor, the main shaft is easily by the problem of pressing head and main shaft and rotor core by crushing.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a shaft pressing tool is suitable for pressing a main shaft of a motor in a rotor core of the motor and comprises an upper shaft sleeve, a limiting sleeve and a lower shaft sleeve which are sequentially arranged from top to bottom along the axial direction of the main shaft, wherein a first through hole, a second through hole and a third through hole which are matched with the main shaft are respectively arranged on the upper shaft sleeve, the limiting sleeve and the lower shaft sleeve; the upper end of the lower shaft sleeve is provided with an annular boss, the inner edge and the outer edge of the upper end face of the annular boss are provided with chamfers or rounded corners, and the upper end face of the annular boss is matched with the circular concave table of the rotor core; one side of the limiting sleeve, facing the rotor core, extends into the rotor core and is abutted against the circular concave table of the rotor core, and one side of the limiting sleeve, facing away from the rotor core, is matched with the lower end face of the upper shaft sleeve; the inner edge of the lower end face of the upper shaft sleeve is rounded.
Further, a first bearing gear, a rotor gear, a second bearing gear and a shaft extension gear are sequentially arranged on the periphery of the main shaft along the axial direction, when the main shaft is pressed, the end portion of the main shaft extends into the lower shaft sleeve, the first bearing gear is in clearance fit with the third through hole, the rotor gear is respectively matched with the rotor core and the second through hole in the limiting sleeve, the second bearing gear and the shaft extension gear are matched with the first through hole in the upper shaft sleeve, and the lower end face of the upper shaft sleeve is abutted against the gear shoulder of the rotor gear.
Furthermore, the length of the limiting sleeve is 0.1-0.2mm larger than the size from the end face of the rotor iron core to the stop shoulder of the second bearing.
Furthermore, the upper end face of the lower shaft sleeve and the lower end face of the lower shaft sleeve are parallel to each other and perpendicular to the axial direction of the main shaft.
Furthermore, the upper end face of the limiting sleeve and the lower end face of the limiting sleeve are parallel to each other and perpendicular to the axial direction of the main shaft.
Furthermore, the upper end face of the upper shaft sleeve and the lower end face of the upper shaft sleeve are parallel to each other and perpendicular to the axial direction of the main shaft.
The utility model has the advantages that: the utility model discloses a last item frock has guaranteed the axiality of last item in-process main shaft and rotor core, has prevented that the main shaft from being pressed the head, has also effectively protected the main shaft not destroyed by pressure distortion and rotor core.
Drawings
FIG. 1 is a schematic view of the shaft pressing tool of the present invention cooperating with a rotor core and a main shaft;
FIG. 2 is a schematic diagram of the shaft pressing tool of the present invention cooperating with a rotor core and a main shaft;
FIG. 3 is a schematic view of the main shaft structure of the present invention;
FIG. 4 is a half-sectional view of the upper shaft sleeve of the present invention;
FIG. 5 is a front view of the stop collar of the present invention;
fig. 6 is a half-sectional view of the lower shaft sleeve of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the structure comprises an upper shaft sleeve, 2, a limiting sleeve, 3, a rotor iron core, 4, a lower shaft sleeve, 41, an annular boss, 5, a main shaft, 51, a first bearing gear, 52, a rotor gear, 53, a second bearing gear, 54, a shaft extension gear, 55 and a gear shoulder.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
A last axle sleeve 1, stop collar 2, lower axle sleeve 4 that the axial that is applicable to with the main shaft 5 pressure equipment of motor in the rotor core 3 of motor as shown in fig. 4 ~ 6 sets up from the top down in proper order, go up axle sleeve 1 stop collar 2 be equipped with respectively on the lower axle sleeve 4 with main shaft 5 matched with first through-hole, second through-hole, third through-hole, first through-hole, second through-hole, the coaxial setting of third through-hole. As shown in fig. 1-2, the shaft pressing tool is schematically matched with a rotor core 3 and a main shaft 5 of a motor, the limiting sleeve 2 and the lower shaft sleeve 4 are respectively arranged at two ends of the rotor core 3, and two end faces of the rotor core 3 are both provided with circular concave platforms; an annular boss 41 is arranged at the upper end of the lower shaft sleeve 4, the inner edge and the outer edge of the upper end face of the annular boss 41 are chamfered or rounded, and the upper end face of the annular boss 41 is matched with the circular concave table of the rotor core 3; one side, facing the rotor core 3, of the limiting sleeve 2 extends into the rotor core 3 and abuts against a circular concave table of the rotor core 3, and when the spindle 5 is pressed in place, one side, facing away from the rotor core 3, of the limiting sleeve 2 is matched with the lower end face of the upper shaft sleeve 1; as shown in fig. 4, the inner edge of the lower end surface of the upper boss 1 is rounded.
In this embodiment, as shown in fig. 3, a first bearing stop 51, a rotor stop 52, a second bearing stop 53, and a shaft extension stop 54 are sequentially disposed on the outer periphery of the main shaft 5 along the axial direction, and arc-shaped stop shoulders 55 recessed inward are disposed on the edges of the first bearing stop 51, the rotor stop 52, and the second bearing stop 53. When the main shaft 5 is pressed, the end of the main shaft 5 extends into the lower shaft sleeve 4, the first bearing retainer 51 is in clearance fit with the third through hole, the rotor retainer 52 is respectively matched with the rotor core 3 and the second through hole in the limiting sleeve 2, the second bearing retainer 53 and the shaft extension retainer 54 are matched with the first through hole in the upper shaft sleeve 1, and the lower end surface of the upper shaft sleeve 1 is abutted against the retainer shoulder 55 of the rotor retainer 52.
In this embodiment, the length of the position limiting sleeve 2 is 0.1-0.2mm larger than the dimension from the end face of the rotor core 3 to the shoulder of the second bearing stop 53, so that the spindle 5 is prevented from being deformed due to excessive pressure in the process of pressing the rotating shaft into the position limiting sleeve, and the spindle 5 is effectively protected.
In this embodiment, the upper end surface of the lower shaft sleeve 4 and the lower end surface of the lower shaft sleeve 4 are parallel to each other and perpendicular to the axial direction of the main shaft 5. This arrangement ensures the coaxiality of the main shaft 5 and the lower hub 4.
In this embodiment, the upper end surface of the position limiting sleeve 2 and the lower end surface of the position limiting sleeve 2 are parallel to each other and perpendicular to the axial direction of the main shaft 5. This arrangement ensures the coaxiality of the spindle 5 and the stop collar 2.
In this embodiment, the upper end surface of the upper shaft sleeve 1 and the lower end surface of the upper shaft sleeve 1 are parallel to each other and perpendicular to the axial direction of the main shaft 5. This arrangement ensures the coaxiality of the main shaft 5 with the upper hub 1.
The working principle is as follows:
before the main shaft 5 is pressed, the lower shaft sleeve 4 is placed on a station, the rotor core 3 is installed on the lower shaft sleeve 4, the lower end face of the rotor core 3 is matched with the annular boss 41 on the upper end face of the lower shaft sleeve 4, and the rotor core 3 is positioned. The lower end face of the limiting sleeve 2 is placed on the upper end face of the rotor core 3 for positioning, then the end part of the motor spindle 5 is placed in a through hole among the limiting sleeve 2, the rotor core 3 and the lower shaft sleeve 4, and the spindle 5 cannot move downwards to a target position due to the fact that the gap between the rotor gear 52 of the spindle 5 and the shaft hole of the rotor core 3 is small. Then, the upper shaft sleeve 1 is sleeved on the periphery of the main shaft 5, and the lower end face of the upper shaft sleeve 1 is matched with the stop shoulder 55 of the rotor stop 52, so that the position of the upper shaft sleeve 1 is kept at the shaft extending end part of the main shaft 5. And starting the press machine, pressing the press machine on the upper shaft sleeve 1, moving the upper shaft sleeve 1 and the shaft extension end of the main shaft 5 downwards under the action of pressure, and pressing the rotor stop 52 of the main shaft 5 into the iron core rotor. The upper shaft sleeve 1 shares the pressure of the press machine, so that the shaft extension end of the main shaft 5 is prevented from being deformed due to thinner pressure; go up the hole and the second bearing shelves 53 clearance fit of axle sleeve 1, the hole and the rotor shelves 52 clearance fit of stop collar 2, the hole and the first bearing shelves 51 clearance fit of lower axle sleeve 4 play limiting displacement, guarantee that axle sleeve 1, stop collar 2, lower axle sleeve 4 all are perpendicular with main shaft 5 to guarantee that rotor core 3 is perpendicular with main shaft 5. The inner edge of the lower end face of the upper shaft sleeve 1 is arc-shaped, so that the interference with a circular bead at the position of a stop shoulder 55 of the rotor stop 52 is avoided, and the lower end face of the upper shaft sleeve 1 is ensured to be in close contact with the stop shoulder 55 of the rotor stop 52. The lower extreme of stop collar 2 compresses tightly and fixes a position with rotor core 3's up end, prevents the skew of the in-process rotor core 3 of last item. The inner edge and the outer edge of the upper end surface of the lower shaft sleeve 4 are both arc-shaped, and the inner edge is arc-shaped, so that the interference between the upper end surface of the lower shaft sleeve 4 and the fillet of the rotor gear 52 shoulder 55 is avoided, and the close contact between the upper end surface of the lower shaft sleeve 4 and the rotor gear 52 shoulder 55 is ensured; the outer border is the arc, reduces the up end of lower axle sleeve 4 and rotor core 3 direct contact's area, prevents to coldly press the process, and area of contact is too big, and pressure nowhere releases, and leads to crowded bad rotor core silicon steel sheet. The length of the limiting sleeve 2 is 0.1-0.2mm larger than the size from the end face of the rotor iron core 3 to the stop shoulder of the second bearing stop 53, so that the main shaft 5 is prevented from being deformed due to excessive pressure in the process of pressing the rotating shaft in.
The pressing shaft tool of the embodiment ensures the coaxiality of the main shaft 5 and the rotor core 3 in the pressing shaft process, prevents the main shaft 5 from being pressed over the head, and effectively protects the main shaft 5 from being pressed and deformed and the rotor core 3 from being damaged.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The shaft pressing tool is characterized by being suitable for pressing a main shaft (5) of a motor in a rotor core (3) of the motor, and comprising an upper shaft sleeve (1), a limiting sleeve (2) and a lower shaft sleeve (4) which are sequentially arranged from top to bottom along the axial direction of the main shaft (5), wherein the upper shaft sleeve (1), the limiting sleeve (2) and the lower shaft sleeve (4) are respectively provided with a first through hole, a second through hole and a third through hole which are matched with the main shaft (5), the limiting sleeve (2) and the lower shaft sleeve (4) are respectively arranged at two ends of the rotor core (3), and two end faces of the rotor core (3) are respectively provided with a circular concave platform; an annular boss (41) is arranged at the upper end of the lower shaft sleeve (4), the inner edge and the outer edge of the upper end face of the annular boss (41) are provided with chamfers or rounded circles, and the upper end face of the annular boss (41) is matched with the circular concave table of the rotor core (3); one side, facing the rotor core (3), of the limiting sleeve (2) extends into the rotor core (3) and abuts against a circular concave table of the rotor core (3), and one side, facing away from the rotor core (3), of the limiting sleeve (2) is matched with the lower end face of the upper shaft sleeve (1); the inner edge of the lower end face of the upper shaft sleeve (1) is rounded.
2. The shaft pressing tool according to claim 1, wherein a first bearing stop (51), a rotor stop (52), a second bearing stop (53) and a shaft extension stop (54) are sequentially arranged on the periphery of the main shaft (5) along the axial direction, when the main shaft (5) is pressed, the end portion of the main shaft (5) extends into the lower shaft sleeve (4), the first bearing stop (51) is in clearance fit with the third through hole, the rotor stop (52) is respectively matched with the rotor core (3) and the second through hole in the limiting sleeve (2), the second bearing stop (53) and the shaft extension stop (54) are matched with the first through hole in the upper shaft sleeve (1), and the lower end face of the upper shaft sleeve (1) is abutted against a stop shoulder (55) of the rotor stop (52).
3. The shaft pressing tool according to claim 2, wherein the length of the limiting sleeve (2) is 0.1-0.2mm larger than the size from the end face of the rotor core (3) to the shoulder of the second bearing stop (53).
4. The shaft pressing tool according to claim 1, wherein the upper end surface of the lower shaft sleeve (4) and the lower end surface of the lower shaft sleeve (4) are parallel to each other and perpendicular to the axial direction of the main shaft (5).
5. The shaft pressing tool according to claim 1, wherein the upper end surface of the limiting sleeve (2) and the lower end surface of the limiting sleeve (2) are parallel to each other and perpendicular to the axial direction of the main shaft (5).
6. The shaft pressing tool according to claim 1, wherein the upper end surface of the upper shaft sleeve (1) and the lower end surface of the upper shaft sleeve (1) are parallel to each other and perpendicular to the axial direction of the main shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022850518.8U CN214125095U (en) | 2020-12-01 | 2020-12-01 | Shaft pressing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022850518.8U CN214125095U (en) | 2020-12-01 | 2020-12-01 | Shaft pressing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214125095U true CN214125095U (en) | 2021-09-03 |
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ID=77508236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022850518.8U Active CN214125095U (en) | 2020-12-01 | 2020-12-01 | Shaft pressing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214125095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116207936A (en) * | 2023-03-27 | 2023-06-02 | 丽水市信毅单向器有限公司 | Processing technology of new energy high-power motor rotor shaft |
-
2020
- 2020-12-01 CN CN202022850518.8U patent/CN214125095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116207936A (en) * | 2023-03-27 | 2023-06-02 | 丽水市信毅单向器有限公司 | Processing technology of new energy high-power motor rotor shaft |
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