CN219477798U

CN219477798U - Motor rotor fixing tool

Info

Publication number: CN219477798U
Application number: CN202320144752.XU
Authority: CN
Inventors: 吴敏; 姚立波; 祁红飞
Original assignee: Zhejiang Saifu Electromechanical Technology Co ltd
Current assignee: Zhejiang Saifu Electromechanical Technology Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-08-04
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a motor rotor fixing tool, which comprises: the lower pressing tooling plate comprises a first mounting hole positioned in the middle and a plurality of first connecting holes arranged around the first mounting hole; the upper pressing tooling plate comprises a second mounting hole positioned in the middle and a plurality of second connecting holes arranged around the second mounting hole; one end of the main shaft is arranged on the first mounting hole, and the other end of the main shaft penetrates through the second mounting hole; the rotor iron core is sleeved outside the main shaft; the fixed assembly penetrates through the first connecting hole, the rotor iron core and the second connecting hole; the shaft sleeve is sleeved on the main shaft. The utility model realizes the installation of the motor rotor and the adjustment of initial balance through the lower pressing tooling plate and the upper pressing tooling plate.

Description

Motor rotor fixing tool

Technical Field

The utility model relates to the technical field of motors, in particular to a motor rotor fixing tool.

Background

In the prior art, the permanent magnet motor rotor core is extremely important for the initial dynamic balance value. Burrs of the rotor sheet cause it to be impossible to fix it completely in place at the time of lamination, and once unbalance occurs in the installation of the rotor sheet, shaking occurs at the time of use, but the dynamic balance of the rotating member (particularly the dynamic balance of the high-speed motor) is not allowed to have shaking. Currently, motor rotor sheets are generally installed by some press equipment, but for some long shafts, the rotor sheets on the long shafts cannot be pressed due to limited travel of the hydraulic press.

As shown in fig. 1, in the prior art, a hydraulic press is adopted to match with a tooling to compress, and tooling is placed at the upper end and the lower end of a rotor to assist, so that the structure is complex and high in cost, and when a long rotor main shaft structural member is manufactured, because the hydraulic press is limited in stroke and high in cost of replacing large hydraulic equipment, the level and concentricity of the rotor punching sheet and the shaft extension of a long rotor shaft cannot be ensured, and the universality is not high.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a motor rotor fixing tool, which realizes the installation of a motor rotor and the adjustment of initial balance through a lower pressing tool plate and an upper pressing tool plate.

The utility model adopts the following technical scheme:

a motor rotor fixing tool comprising: the lower pressing tooling plate comprises a first mounting hole positioned in the middle and a plurality of first connecting holes arranged around the first mounting hole; the upper pressing tooling plate comprises a second mounting hole positioned in the middle and a plurality of second connecting holes arranged around the second mounting hole; one end of the main shaft is arranged on the first mounting hole, and the other end of the main shaft penetrates through the second mounting hole; the rotor iron core is sleeved outside the main shaft; the fixed assembly penetrates through the first connecting hole, the rotor iron core and the second connecting hole; the shaft sleeve is sleeved on the main shaft.

Preferably, the first mounting hole is a step hole, and the blocking part of the main shaft is positioned on the step hole.

Preferably, the step hole is in transition fit with the blocking part.

Preferably, the shaft sleeve is located in the second mounting hole and sleeved on the main shaft.

Preferably, the sleeve abuts against the surface of the rotor core.

Preferably, the fixing assembly comprises a long bolt penetrating through the first connecting hole, the rotor core and the second connecting hole, and fastening nuts arranged at two ends of the long bolt.

Preferably, the lower pressing tooling plate is provided with at least two groups of first connecting holes; at least two groups of second connecting holes are arranged on the upper pressing tooling plate.

Compared with the prior art, the utility model has the following advantages: the utility model provides a motor rotor fixing tool, which is characterized in that a rotor core is fixed through a lower pressing tool plate and an upper pressing tool plate, initial dynamic balance adjustment is realized through adjusting a long bolt and a fastening nut, and finally, the rotor core is ensured not to rebound through a shaft sleeve.

Drawings

Fig. 1 is a schematic diagram of a tooling of the prior art.

Fig. 2 is a schematic structural diagram of a motor rotor fixing tool according to the present utility model.

Fig. 3 is a schematic view of the structure of the lower pressing tooling plate.

Fig. 4 is a schematic structural view of the upper press tooling plate.

In the figure, a lower pressing tool plate 1, a first mounting hole 11, a first connecting hole 12, an upper pressing tool plate 2, a second mounting hole 21, a second connecting hole 22, a main shaft 3, a rotor core 4, a shaft sleeve 5, a long bolt 6 and a fastening nut 7.

Detailed Description

In order to facilitate understanding of the technical scheme of the present utility model, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 2-4, the motor rotor fixing tool comprises a lower pressing tool plate 1, an upper pressing tool plate 2, a main shaft 3, a rotor core 4, a fixing component and a shaft sleeve 5;

the lower pressing tooling plate 1 comprises a first mounting hole 11 positioned in the middle and a plurality of first connecting holes 12 arranged around the first mounting hole 11 and used for positioning the main shaft 3;

the upper pressing tool plate 2 comprises a second mounting hole 21 in the middle and a plurality of second connecting holes 22 arranged around the second mounting hole 21, and is matched with the lower pressing tool plate 1 to position the rotor core 4;

one end of the main shaft 3 is arranged on the first mounting hole 11, and the other end penetrates through the second mounting hole 21;

the rotor core 4 is sleeved outside the main shaft 3;

the fixing component penetrates through the first connecting hole 12, the rotor core 4 and the second connecting hole 22;

the shaft sleeve 5 is sleeved on the main shaft 3.

When the rotor core pressing device is used, one end of the main shaft 3 is arranged on the first mounting hole 11 of the lower pressing tool plate 1, the rotor core 4 is sleeved outside the main shaft 3, one end of the rotor core is propped against the lower pressing tool plate 1, the upper pressing tool plate 2 is arranged from the upper end of the main shaft 3 and pressed on the rotor core 4, and the lower pressing tool plate 1, the rotor core 4 and the upper pressing tool plate 2 are connected and fixed by using the fixing component.

Specifically, the fixing assembly comprises a plurality of long bolts 6 penetrating through the first connecting holes 12, the rotor core 4 and the second connecting holes 22, and fastening nuts 7 arranged at two ends of the long bolts 6. After the installation is completed, the rotor core 4 can be pressed by tightening the fastening nuts 7, the distance between each rotor sheet in the rotor core 4 is adjusted, the surface of the rotor core 4 is adjusted to be a plane, and the inclination condition can not occur, so that the stability of the initial value of dynamic balance is effectively improved.

The first mounting hole 11 is a step hole, the blocking part of the main shaft 3 is positioned on the step hole, and the step hole is in transition fit with the blocking part, so that the installation is convenient.

The shaft sleeve 5 is positioned in the second mounting hole 21 and sleeved on the main shaft 3. Specifically, the diameter of the second mounting hole 21 is slightly larger than the diameter of the corresponding part of the main shaft 3, and when the rotor is mounted, the heating shaft sleeve 5 is sleeved outside the main shaft 3 and mounted at a limit position (propped against the rotor core 4), the inner wall of the shaft sleeve 5 is tightly attached to the main shaft 3, and the rotor core 4 is ensured not to rebound after the cover plate is dismounted up and down by the friction force between the shaft sleeve 5 and the rotor core 4.

At least two groups of first connecting holes 12 which are circumferentially arranged are arranged on the lower pressing tooling plate 1; at least two groups of second connecting holes 22 which are arranged in a circumference manner are arranged on the upper pressing tool plate 2, so that the upper pressing tool plate can be suitable for mounting and fixing rotor cores 4 with different diameters and sizes.

The foregoing is merely a preferred embodiment of the present utility model, and the scope of the utility model is defined by the claims, and those skilled in the art should also consider the scope of the present utility model without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a fixed frock of motor rotor which characterized in that includes:

the lower pressing tooling plate (1) comprises a first mounting hole (11) positioned in the middle and a plurality of first connecting holes (12) arranged around the first mounting hole (11);

the upper pressing tooling plate (2) comprises a second mounting hole (21) positioned in the middle and a plurality of second connecting holes (22) arranged around the second mounting hole (21);

a main shaft (3) with one end mounted on the first mounting hole (11) and the other end penetrating through the second mounting hole (21); the rotor core (4) is sleeved outside the main shaft (3);

the fixing assembly penetrates through the first connecting hole (12), the rotor core (4) and the second connecting hole (22); and the shaft sleeve (5) is sleeved on the main shaft (3).

2. A motor rotor fixing tool as claimed in claim 1, wherein the first mounting hole (11) is a stepped hole, and the stopper portion of the spindle (3) is located on the stepped hole.

3. The motor rotor securing tool as claimed in claim 2, wherein the step hole is in transition engagement with the stop.

4. A motor rotor fixing tool according to claim 1, wherein the shaft sleeve (5) is located in the second mounting hole (21) and sleeved on the main shaft (3).

5. A motor rotor fixing tool according to claim 4, wherein the shaft sleeve (5) abuts against the surface of the rotor core (4).

6. A motor rotor fixing tool according to claim 1, wherein the fixing assembly comprises a long bolt (6) penetrating through the first connecting hole (12), the rotor core (4) and the second connecting hole (22), and fastening nuts (7) arranged at two ends of the long bolt (6).

7. A motor rotor fixing tool according to claim 1, wherein the lower pressing tool plate (1) is provided with at least two groups of first connecting holes (12); at least two groups of second connecting holes (22) are arranged on the upper pressing tool plate (2).