CN115694104A - Magnetic steel pressing device of high-speed motor - Google Patents
Magnetic steel pressing device of high-speed motor Download PDFInfo
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- CN115694104A CN115694104A CN202211443871.1A CN202211443871A CN115694104A CN 115694104 A CN115694104 A CN 115694104A CN 202211443871 A CN202211443871 A CN 202211443871A CN 115694104 A CN115694104 A CN 115694104A
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Abstract
The application relates to the technical field of motor rotors and discloses a high-speed motor magnetic steel pressing device for assembling a magnetic steel component and a main shaft, wherein the magnetic steel component is sleeved on the surface of the main shaft, and the magnetic steel component is in interference fit with the main shaft. The high-speed motor magnetic steel pressing device comprises a supporting mechanism, a first driving mechanism and a second driving mechanism; the supporting mechanism is used for supporting the main shaft; the first driving device is used for driving the magnetic steel component to deform so that the inner diameter of the magnetic steel component is larger than the diameter of the main shaft; the second driving device is used for driving the magnetic steel component to move along the axial direction of the main shaft after the inner diameter of the magnetic steel component is enlarged. The application discloses high-speed motor magnet steel suppression device can pack into the main shaft with the magnet steel that needs higher suppression pressure and great propulsion to improve assembly efficiency.
Description
Technical Field
The application relates to the technical field of motor rotors, in particular to a magnetic steel pressing device of a high-speed motor.
Background
The main shaft plus the magnetic steel is one of high-speed permanent magnet motor rotor structures, the matching form of the magnetic steel and the main shaft is interference fit, and for the interference fit, common assembling methods comprise a manual hammering method, a press-in method and a temperature difference method. However, the magnetic steel material is brittle and is not suitable for knocking and assembling by a temperature difference method, so the magnetic steel material is generally assembled by a press-in method.
At present, generally utilize hydraulic means to assemble the magnet steel, because magnet steel assembly propulsion is great, and the hydraulic means stroke is shorter, needs to dismantle and suppress many times, this just seriously influences assembly efficiency to the magnet steel is greater than pressure height, is unfavorable for safe operation.
Disclosure of Invention
The application provides a high-speed motor magnet steel suppression device can pack the magnet steel that needs higher suppression pressure and great propulsion into the main shaft to improve assembly efficiency.
The application provides a magnetic steel pressing device of a high-speed motor, which is used for assembling a magnetic steel component and a main shaft, wherein the magnetic steel component is sleeved on the surface of the main shaft, and the magnetic steel component and the main shaft are in interference fit; the high-speed motor magnetic steel pressing device comprises a supporting mechanism, a first driving mechanism and a second driving mechanism;
the supporting mechanism is used for supporting the main shaft;
the first driving device is used for driving the magnetic steel assembly to deform so that the inner diameter of the magnetic steel assembly is larger than the diameter of the main shaft;
and the second driving device is used for driving the magnetic steel assembly to move along the axial direction of the main shaft after the inner diameter of the magnetic steel assembly is increased.
The application provides a high-speed motor magnet steel suppression device, through setting up first drive arrangement and second drive arrangement, first drive arrangement can radially suppress magnetic steel component to make magnetic steel component's internal diameter grow, the second drive arrangement can suppress magnetic steel component axial, and after magnetic steel component's internal diameter grow, second drive arrangement pressed magnetic steel component to final mounted position. Above-mentioned high speed motor magnet steel suppression device can easily put in place magnet steel components pressure, labour saving and time saving, convenient and fast.
In some possible embodiments, the magnetic steel assembly comprises a first magnetic steel and a second magnetic steel arranged along the axial direction of the spindle;
the main shaft is detachably connected with the supporting mechanism;
the first driving device is used for driving the first magnetic steel to deform or driving the second magnetic steel to deform;
the second driving device is used for driving the first magnetic steel to move along the axial direction or driving the second magnetic steel to move along the axial direction.
In some possible embodiments, the first driving device includes a first hydraulic pump and a connector, one end of the connector is communicated with the first hydraulic pump, and the other end of the connector is connected with the first magnetic steel or the second magnetic steel.
In some possible embodiments, further comprising a sleeve assembly comprising a first sleeve and a second sleeve;
the first sleeve is sleeved on the outer surface of one end of the main shaft, and the end part of the first sleeve is abutted against the end face of the first magnetic steel;
the second sleeve is sleeved on the outer surface of the other end of the main shaft, and the end part of the second sleeve is abutted to the end face of the second magnetic steel;
the second driving device is connected to the first sleeve or the second sleeve.
In some possible embodiments, the device further comprises a transmission assembly, wherein the transmission assembly comprises a cylinder and a piston, and one end of the cylinder is provided with an opening;
one end of the piston is connected with one end of the first sleeve, which is far away from the first magnetic steel, or one end of the second sleeve, which is far away from the second magnetic steel, and the other end of the piston is sleeved in the cylinder body through the opening;
the driving device can be used for driving the piston to move along the axial direction relative to the cylinder body.
In some possible embodiments, a sealing assembly is provided between the cylinder and the piston, the sealing assembly being located at an end of the piston remote from the first sleeve.
In some possible embodiments, a guide ring for guiding the piston is provided between the cylinder and the piston.
In some possible embodiments, a dust ring is disposed between the cylinder and the piston, and the dust ring is located on a side of the guide ring facing the first sleeve.
In some possible embodiments, the second driving device comprises a second hydraulic pump and an adapter, and the adapter is located on one side of the cylinder body away from the magnetic steel assembly;
the first end of the adapter is fixed to the cylinder body, and the first end of the adapter is communicated with the interior of the cylinder body;
the second hydraulic pump with the second end intercommunication of adapter.
In some possible embodiments, the support mechanism comprises a three-jaw chuck, a tie rod disk, and a screw;
the three-jaw chuck is arranged opposite to the pull rod disc, the pull rod disc is positioned on one side of the cylinder body, which is far away from the magnetic steel assembly, and the three-jaw chuck is positioned on one side of the magnetic steel assembly, which is far away from the transmission assembly;
the screw rod extends along the axial direction of the main shaft, one end of the screw rod is fixed on the three-jaw chuck, and the other end of the screw rod is fixed on the pull rod disc;
the cylinder body is fixedly connected with the pull rod disc, and the adapter penetrates through the pull rod disc and then is fixed on the cylinder body;
when the transmission assembly is connected to one of the first sleeve and the second sleeve, the other of the first sleeve and the second sleeve is fixed to the three-jaw chuck.
In some possible embodiments, the first sleeve is provided with a first stop structure for limiting movement of the first sleeve in the axial direction, and/or the second sleeve is provided with a second stop structure for limiting movement of the second sleeve in the axial direction.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic steel pressing device of a high-speed motor in an embodiment of the present application;
fig. 2 is a schematic view of a part of the structure of the magnetic steel pressing device of the high-speed motor in fig. 1.
In the figure:
10-a main shaft; 20-a magnetic steel component; 21-first magnetic steel; 22-second magnetic steel; 30-a first sleeve; 31-a first limit structure; 40-a second sleeve; 41-a second limiting structure; 50-a three-jaw chuck; 60-screw rod; 70-a draw bar tray; 80-a nut; 90-cylinder body; 100-a piston; 110 — a first hydraulic pump; 120-a connector; 130-a second hydraulic pump; 140-an adapter; 150-O type seal ring; a 160-O type sealing ring retainer ring; 170-a guide ring; 180-J type dust ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the high-speed motor magnetic steel pressing device in the embodiment of the present application may include a supporting mechanism, a transmission assembly, a sleeve assembly, a first driving device, and a second driving device, the high-speed motor magnetic steel pressing device is used for assembling the magnetic steel assembly 20 and the spindle 10, the magnetic steel assembly 20 is sleeved on an outer surface of the spindle 10, and the magnetic steel assembly 20 and the spindle 10 are in interference fit.
As shown in fig. 1, the magnetic steel assembly 20 may include a first magnetic steel 21 and a second magnetic steel 22, the first magnetic steel 21 and the second magnetic steel 22 are arranged along the axial direction of the spindle 10, and in an initial state, the first magnetic steel 21 and the second magnetic steel 22 are disposed at an interval. That is to say, the high-speed motor magnetic steel pressing device in the embodiment of the present application is used for pressing the first magnetic steel 21 and the second magnetic steel 22 to a state of abutting.
The sleeve component can include a first sleeve 30 and a second sleeve 40, the first sleeve 30 is arranged on one side of the first magnetic steel 21 departing from the second magnetic steel 22, and the first sleeve 30 is sleeved on the outer surface of the main shaft 10 and abutted to the first magnetic steel 21. The second sleeve 40 is disposed on one side of the second magnetic steel 22 departing from the first magnetic steel 21, and the second sleeve 40 is sleeved on the outer surface of the spindle 10 and abuts against the second magnetic steel 22. It can be understood that the first magnetic steel 21 and the first sleeve 30 and the second magnetic steel 22 and the second sleeve 40 are symmetrically arranged.
The support mechanism may include a three-jaw chuck 50, a screw 60, and a draw bar disk 70, and the three-jaw chuck 50 and the draw bar disk 70 may be disposed opposite to each other and may be arranged along the axial direction of the spindle 10. One end of the screw 60 can be screwed into the three-jaw chuck 50, so that one end of the screw 60 is fixed to the three-jaw chuck 50, the pull rod plate 70 can be disposed in a corresponding limiting hole of the screw 60, and the other end of the screw 60 can be fixed to the pull rod plate 70 by the nut 80 after passing through the limiting hole. The screws 60 may be three, and the three screws 60 may be evenly distributed about the axis of the three-jaw chuck 50, which may allow the drawbar plate 70 to be more securely mounted to the three-jaw chuck 50.
The main shaft 10, the magnetic steel component 20 and the sleeve component are all located between the three-jaw chuck 50 and the pull rod disk 70, taking the example that the first magnetic steel 21 is close to the pull rod disk 70 and the second magnetic steel 22 is close to the three-jaw chuck 50, the second sleeve 40 can be fixed to the three-jaw chuck 50, and the main shaft 10 is sleeved with the second sleeve 40, so that the main shaft 10 can be fixed to the three-jaw chuck 50, and the main shaft 10 can be guaranteed not to be damaged in the pressing process. The second sleeve 40 and the three-jaw chuck 50 can be detachably connected, so that the spindle 10 and the magnetic steel assembly 20 can be conveniently taken out after being assembled.
The transmission assembly may include a cylinder 90 and a piston 100, the piston 100 is located on one side of the first sleeve 30 departing from the first magnetic steel 21, the piston 100 may be fixedly connected to the first sleeve 30, one end of the cylinder 90 is provided with an opening, and the cylinder 90 may be sleeved on the outer surface of the piston 100 through the opening. One side of the cylinder body 90 far from the main shaft 10 can be fixed on the pull rod disc 70, and during specific implementation, a spigot structure can be arranged on one side of the pull rod disc 70 facing the cylinder body 90, the spigot structure can be a clamping groove matched with the size of the cylinder body 90, and the cylinder body 90 is clamped in the clamping groove, so that the cylinder body 90 is fixed on the pull rod disc 70.
The first driving device may include a first hydraulic pump 110 and a connector 120, one end of the connector 120 may be connected to the first magnetic steel 21, and the other end may be communicated with the first hydraulic pump 110 through a conduit. When the first hydraulic pump 110 is pressurized, hydraulic oil can be transferred to the connector 120 through the conduit, and the connector 120 transfers the hydraulic oil to the first magnetic steel 21, so that the inner diameter of the first magnetic steel 21 is properly enlarged to be larger than the diameter of the main shaft 10, and at this time, the first magnetic steel 21 and the main shaft 10 can move relatively.
The second driving device may include a second hydraulic pump 130 and an adapter 140, one end of the adapter 140 may be fixed to the cylinder 90 after passing through the drawbar plate 70, an end of the adapter 140 may communicate with the inside of the cylinder 90, and the other end of the adapter 140 may communicate with the second hydraulic pump 130 through a conduit. When exerting pressure to second hydraulic pump 130, hydraulic oil can pass through the pipe and transmit for adapter 140, and adapter 140 transmits hydraulic oil between cylinder and piston 100, and under the effect of pressure, piston 100 can move towards first magnet steel 21 along the axial. When piston 100 was along axial displacement, can drive first sleeve 30 along axial displacement, because first sleeve 30 and first magnet steel 21 butt, the interference fit state has been relieved between first magnet steel 21 and the main shaft 10, when first sleeve 30 was along axial displacement, can drive first magnet steel 21 along axial displacement until suitable position.
The first sleeve 30 may be provided with a first stop structure 31, and the first stop structure 31 may be a step structure, which may match with the step structure provided by the spindle 10. It can also be understood that, when the first sleeve 30 can move relative to the main shaft 10 to the first limiting structure 31 to be clamped with the step structure of the main shaft 10, at this time, the first sleeve 30 can no longer move downward relative to the main shaft 10, and the first magnetic steel 21 moves to a proper position, so as to ensure the installation position of the first magnetic steel 21.
Similarly, the second sleeve 40 may be provided with a second stop structure 41, and the second stop structure 41 may also be a step structure, which may match the step structure provided by the main shaft 10. When the second sleeve 40 moves axially relative to the main shaft 10, the second magnetic steel 22 can be driven to move, when the second sleeve 40 moves to the first limiting structure 31 and is clamped with the step structure of the main shaft 10, the second sleeve 40 stops moving, and the second magnetic steel 22 moves to the installation position.
In this embodiment, in order to ensure the driving action of the hydraulic oil on the piston 100, a sealing assembly may be disposed between the side wall of the piston 100 and the side wall of the cylinder 90, and the sealing assembly may be located at an end of the piston 100 away from the main shaft 10. The seal assembly may include an axially aligned O-ring 150 and O-ring retainer ring 160, with the O-ring 150 being disposed adjacent the drawbar cup 70 such that the hydraulic oil may be sealed and secured against leakage.
A guide ring 170 may be further disposed between the side wall of the piston 100 and the side wall of the cylinder 90, the guide ring 170 may be located at the opening close to the cylinder 90, and the guide ring 170 may be used to guide the piston 100 when moving along the axial direction, so as to ensure that the pressure of the piston 100 can be uniformly applied to the first sleeve 30, and thus, the first magnetic steel 21. In addition, a J-shaped dust ring 180 may be further disposed between the piston 100 and the cylinder 90, and the J-shaped dust ring 180 may be located at a side of the guide ring 170 facing the main shaft 10 to prevent external dust from entering an inner surface of the cylinder 90 to contaminate the cylinder 90.
When it is necessary to assemble the magnetic steel assembly 20 with the spindle 10, as shown in fig. 1, the second sleeve 40 is first fixed to the three-jaw chuck 50, the first sleeve 30 is connected to the piston 100, and then the first magnetic steel 21 is pressed to a proper position by the first hydraulic pump 110 and the second hydraulic pump 130. After the first magnetic steel 21 is pressed, the second sleeve 40 can be taken out of the three-jaw chuck 50, and then the spindle 10 is turned around to fix the first sleeve 30 to the three-jaw chuck 50, so that the second sleeve 40 is connected to the piston 100. Then, the second magnetic steel 22 is pressed to a proper position by the first hydraulic pump 110 and the second hydraulic pump 130, so that the installation between the magnetic steel assembly 20 and the main shaft 10 is completed. When the first magnetic steel 21 or the second magnetic steel 22 is pushed to move along the axial direction, the first magnetic steel 21 or the second magnetic steel 22 and the spindle 10 are in a non-interference fit state, so that the magnetic steel assembly 20 can be easily and accurately pressed in place, time and labor are saved, and the magnetic steel assembly is convenient and quick.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A magnetic steel pressing device of a high-speed motor is used for assembling a magnetic steel component and a main shaft, wherein the magnetic steel component is sleeved on the surface of the main shaft and is in interference fit with the main shaft; the device is characterized in that the high-speed motor magnetic steel pressing device comprises a supporting mechanism, a first driving mechanism and a second driving mechanism;
the supporting mechanism is used for supporting the main shaft;
the first driving device is used for driving the magnetic steel component to deform so that the inner diameter of the magnetic steel component is larger than the diameter of the main shaft;
and the second driving device is used for driving the magnetic steel component to move along the axial direction of the main shaft after the inner diameter of the magnetic steel component is increased.
2. The magnetic steel pressing device of the high-speed motor according to claim 1, wherein the magnetic steel assembly comprises a first magnetic steel and a second magnetic steel which are arranged along an axial direction of the spindle;
the main shaft is detachably connected with the supporting mechanism;
the first driving device is used for driving the first magnetic steel to deform or driving the second magnetic steel to deform;
the second driving device is used for driving the first magnetic steel to move along the axial direction or driving the second magnetic steel to move along the axial direction.
3. A high-speed motor magnetic steel pressing device according to claim 2, wherein the first driving device includes a first hydraulic pump and a connector, one end of the connector is communicated with the first hydraulic pump, and the other end of the connector is connected with the first magnetic steel or the second magnetic steel.
4. The high-speed motor magnetic steel pressing device according to claim 2, further comprising a sleeve assembly, wherein the sleeve assembly comprises a first sleeve and a second sleeve;
the first sleeve is sleeved on the outer surface of one end of the main shaft, and the end part of the first sleeve is abutted against the end face of the first magnetic steel;
the second sleeve is sleeved on the outer surface of the other end of the main shaft, and the end part of the second sleeve is abutted to the end face of the second magnetic steel;
the second driving device is connected to the first sleeve or the second sleeve.
5. The magnetic steel pressing device of the high-speed motor according to claim 4, further comprising a transmission assembly, wherein the transmission assembly comprises a cylinder and a piston, and an opening is formed in one end of the cylinder;
one end of the piston is connected with one end of the first sleeve, which is far away from the first magnetic steel, or one end of the second sleeve, which is far away from the second magnetic steel, and the other end of the piston is sleeved in the cylinder body through the opening;
the driving device can be used for driving the piston to move along the axial direction relative to the cylinder body.
6. A high-speed motor magnetic steel pressing device according to claim 5, wherein a sealing assembly is arranged between the cylinder body and the piston, and the sealing assembly is located at one end, far away from the first sleeve, of the piston.
7. A high-speed motor magnetic steel pressing device according to claim 5, wherein a guide ring for guiding the piston is arranged between the cylinder body and the piston.
8. A high-speed motor magnetic steel pressing device according to claim 7, wherein a dust ring is arranged between the cylinder body and the piston, and the dust ring is located on one side, facing the first sleeve, of the guide ring.
9. The high-speed motor magnetic steel pressing device according to claim 5, wherein the second driving device comprises a second hydraulic pump and an adapter, and the adapter is located on one side, away from the magnetic steel assembly, of the cylinder body;
the first end of the adapter is fixed to the cylinder body, and the first end of the adapter is communicated with the interior of the cylinder body;
the second hydraulic pump with the second end intercommunication of adapter.
10. The high-speed motor magnetic steel pressing device according to claim 9, wherein the supporting mechanism comprises a three-jaw chuck, a pull rod disc and a screw rod;
the three-jaw chuck is arranged opposite to the pull rod disc, the pull rod disc is positioned on one side of the cylinder body, which is far away from the magnetic steel assembly, and the three-jaw chuck is positioned on one side of the magnetic steel assembly, which is far away from the transmission assembly;
the screw rod extends along the axial direction of the main shaft, one end of the screw rod is fixed on the three-jaw chuck, and the other end of the screw rod is fixed on the pull rod disc;
the cylinder body is fixedly connected to the pull rod disc, and the adapter penetrates through the pull rod disc and then is fixed to the cylinder body;
when the transmission assembly is connected to one of the first sleeve and the second sleeve, the other of the first sleeve and the second sleeve is fixed to the three-jaw chuck.
11. The high-speed motor magnetic steel pressing device according to claim 4, wherein the first sleeve is provided with a first limiting structure for limiting the first sleeve to move in the axial direction, and/or the second sleeve is provided with a second limiting structure for limiting the second sleeve to move in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443871.1A CN115694104A (en) | 2022-11-18 | 2022-11-18 | Magnetic steel pressing device of high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211443871.1A CN115694104A (en) | 2022-11-18 | 2022-11-18 | Magnetic steel pressing device of high-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115694104A true CN115694104A (en) | 2023-02-03 |
Family
ID=85053297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211443871.1A Pending CN115694104A (en) | 2022-11-18 | 2022-11-18 | Magnetic steel pressing device of high-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115694104A (en) |
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2022
- 2022-11-18 CN CN202211443871.1A patent/CN115694104A/en active Pending
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