CN220234301U - Rotor shaft with cavity structure - Google Patents
Rotor shaft with cavity structure Download PDFInfo
- Publication number
- CN220234301U CN220234301U CN202321849874.5U CN202321849874U CN220234301U CN 220234301 U CN220234301 U CN 220234301U CN 202321849874 U CN202321849874 U CN 202321849874U CN 220234301 U CN220234301 U CN 220234301U
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- rotating shaft
- shaft
- channel
- middle section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 11
- 238000005520 cutting process Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000005465 channeling Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Abstract
The utility model provides a rotor shaft with a cavity structure, which is divided into a rotating shaft middle section, a rotating shaft side section and magnetic steel for separate processing and production, wherein a through channel is arranged in the rotating shaft middle section, the magnetic steel is arranged in the channel, and two ends of the magnetic steel are provided with magnetic steel protection structures for preventing the magnetic steel from being crushed and channeling to two ends; the side section of the rotating shaft comprises a side shaft part, one end of the side shaft part is provided with a connecting part, the side shaft part and the connecting part are of hollow structures, and the connecting parts are respectively inserted from two ends of a penetrating channel and respectively propped against two ends of magnetic steel so as to form a hollow structure at two ends, thereby reducing the overall weight of the rotor shaft and saving the material cost; the middle section of the rotating shaft and the two side sections of the rotating shaft are both made by a wax injection process, compared with the cutting by a cold heading process, less waste is generated, and the abrasion of the cutting tool caused by the cutting is greatly reduced, so that the production cost is reduced.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a rotor shaft with a cavity structure.
Background
The rotor shaft of the prior art is generally a cold heading process, and is generally a solid rotor shaft made of nickel-based alloy.
When the solid rotor shaft is manufactured, the material consumption is large, the cutting waste is large, the abrasion to the cutter is serious, and the cost is high; when the rotor is used, the solid rotor shaft is large in weight, large in moment of inertia and large in energy loss during starting and stopping, so that the overall efficiency of the rotor is low.
Disclosure of Invention
The utility model aims to solve the problems that: a rotor shaft having a cavity structure is provided which is inexpensive to manufacture and efficient to use.
The utility model solves the problems by adopting the following technical scheme: the rotor shaft with the cavity structure comprises a rotating shaft middle section and two rotating shaft side sections which are respectively arranged at two ends of the rotating shaft middle section, wherein a penetrating channel is arranged in the rotating shaft middle section; the magnetic steel is arranged in the channel; the two ends of the magnetic steel are provided with magnetic steel protection structures; the rotating shaft side section comprises a side shaft part, and one end of the side shaft part is provided with a connecting part; the side shaft part and the connecting part are hollow structures; the two connecting parts are inserted from two ends of the penetrating channel respectively and respectively prop against two ends of the magnetic steel so as to form a cavity structure at the two ends; the middle section of the rotating shaft and the side sections of the two rotating shafts are both manufactured by a wax injection process.
Compared with the integral solid rotor shaft in the prior art, the rotor shaft is divided into the middle section of the rotating shaft, the side sections of the rotating shaft and the magnetic steel for separate processing and production, the middle section of the rotating shaft is provided with a through channel, the channel is provided with the magnetic steel, and the two ends of the magnetic steel are provided with magnetic steel protection structures for preventing the magnetic steel from being crushed and channeling to the two ends; the side section of the rotating shaft comprises a side shaft part, one end of the side shaft part is provided with a connecting part, the side shaft part and the connecting part are of hollow structures, and the connecting parts are respectively inserted from two ends of a penetrating channel and respectively propped against two ends of magnetic steel so as to form a hollow structure at two ends, thereby reducing the overall weight of the rotor shaft and saving the material cost; the middle section of the rotating shaft and the two side sections of the rotating shaft are both made by a wax injection process, compared with the cutting by a cold heading process, less waste is generated, and the abrasion of the cutting tool caused by the cutting is greatly reduced, so that the production cost is reduced.
The rotor shaft with the cavity structure comprises a magnetic steel protection structure, wherein the magnetic steel protection structure is a protection sheet, and the protection sheet is round and is arranged between the connecting part and the magnetic steel; the round shape can be used for matching with the middle section of the rotating shaft, and can play a supporting role on the middle section of the rotating shaft.
The rotor shaft with the cavity structure comprises a connecting part and a magnetic steel, wherein a clamping groove is formed in one end of the connecting part, which is contacted with the magnetic steel; the protection sheet is arranged in the clamping groove; the outer side wall of the protection sheet is in interference fit with the inner side wall of the clamping groove; the interference fit between the parts has the advantages of simple structure and convenient matching and processing, and reliable connection is formed between the protection sheet and the clamping groove.
The rotor shaft with the cavity structure is characterized in that the protection sheet is internally provided with the exhaust holes for exhausting the air pressure discharged by the magnetic steel during high pressure so as to prevent the magnetic steel from being crushed.
According to the rotor shaft with the cavity structure, the inner side wall of the channel is in interference fit with the outer side wall of the magnetic steel, interference fit between parts has the advantages of being simple in structure and convenient to fit and process, and reliable connection is formed between the channel and the magnetic steel.
According to the rotor shaft with the cavity structure, the outer side wall of the connecting part is in interference fit with the inner side wall of the channel, interference fit between parts has the advantages of being simple in structure and convenient to fit and process, and reliable connection is formed between the connecting part and the channel.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is an exploded view of the mating structure of the shaft side segments and the protective sheet;
FIG. 4 is a cross-sectional view of the present utility model;
fig. 5 is a schematic diagram of the cooperation of the side section of the rotating shaft, the protection sheet and the magnetic steel.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
Referring to fig. 1, 2 and 4, the technical scheme adopted by the present utility model for solving the above problems is as follows: the rotor shaft with the cavity structure comprises a rotating shaft middle section 1 and two rotating shaft side sections 2 which are respectively arranged at two ends of the rotating shaft middle section 1, wherein a through channel 11 is arranged in the rotating shaft middle section 1; the magnetic steel 3 is arranged in the channel 11; the rotating shaft side section 2 comprises a side shaft part 21, and one end of the side shaft part 21 is provided with a connecting part 22; the side shaft part 21 and the connecting part 22 are hollow structures; two connecting parts 22 are respectively inserted from two ends of the through channel 11 and respectively abutted against two ends of the magnetic steel 3 so as to form a cavity structure at the two ends; the middle section 1 of the rotating shaft and the two side sections 2 of the rotating shaft are both manufactured by a wax injection process.
In actual use, the rotor shaft is divided into the middle rotating shaft section 1, the side rotating shaft section 2 and the magnetic steel 3 for separate processing and production, the middle rotating shaft section 1 is provided with the through channel 11, the magnetic steel 3 is arranged in the channel 11, the side rotating shaft section 2 comprises the side shaft part 21, one end of the side shaft part 21 is provided with the connecting part 22, the side shaft part 21 and the connecting part 22 are of hollow structures, the connecting parts 22 are respectively inserted from two ends of the through channel 11 and respectively abutted against two ends of the magnetic steel 3 so as to form a cavity structure at two ends, thereby reducing the overall weight of the rotor shaft and saving the material cost, and the dynamic inertia of the rotor shaft during working is reduced due to the reduction of the weight, thereby improving the overall efficiency of the rotor; the middle section 1 and the two side sections 2 of the rotating shaft are made by a wax injection process, compared with the cutting by a cold heading process, less waste is generated, and the abrasion of the cutting tool caused by the cutting is greatly reduced, so that the production cost is reduced.
Please continue to refer to fig. 2 and 3, wherein the magnetic steel protection structure 4 is preferably a protection sheet, the protection sheet is circular, and is disposed between the connection portion 22 and the magnetic steel 3 for fixing the position of the magnetic steel 3, preventing the magnetic steel 3 from being crushed into cavities at two ends of the rotor shaft to cause failure of the rotor shaft, and being capable of supporting the middle section 1 of the rotating shaft, and preventing the middle section 1 of the hollow supporting rotating shaft from being crushed after being deformed by extrusion.
It should be noted that, the magnetic steel protection structure 4 may be a reinforced support structure disposed in the channel 11 and disposed in a ring shape, in addition to the individually disposed protection sheets; or a reinforced support structure which is arranged at one end of the connecting part 22 contacted with the magnetic steel 3 and is in a ring shape; such a structure can play a role in fixing the position of the magnetic steel 3 and supporting the middle section 1 of the rotating shaft.
With continued reference to fig. 3 and 5, a clamping groove 221 is formed at one end of the connecting portion 22 contacting the magnetic steel 3; the protective sheet is disposed in the card slot 221; the outer sidewall of the protective sheet is in interference fit with the inner sidewall of the clamping groove 221.
With continued reference to fig. 3 and 5, the protection sheet has a vent 41 therein for preventing the magnetic steel 3 from being crushed.
With continued reference to fig. 4 and 5, the inner side wall of the channel 11 is in interference fit with the outer side wall of the magnetic steel 3; the outer side wall of the connecting portion 22 is in interference fit with the inner side wall of the channel 11.
During actual assembly, the two protection sheets are pressed into the two clamping grooves 221 to be fixed, and then the connecting part 22 of one of the rotating shaft middle sections 1 is pressed into the channel 11 of the rotating shaft middle section 1, and the pressing-in distance is limited during pressing-in, so that the two protection sheets can be pressed into a proper distance; then pressing the magnetic steel 3 into the channel 11 of the middle section 1 of the rotating shaft; finally, the connecting part 22 of the other rotating shaft middle section 1 is pressed into the channel 11 of the rotating shaft middle section 1, and the two protection sheets are propped against the two ends of the magnetic steel 3; at this time, the outer side wall of the protection sheet is in interference fit with the inner side wall of the clamping groove 221, the inner side wall of the channel 11 is in interference fit with the outer side wall of the magnetic steel 3, the outer side wall of the connecting part 22 is in interference fit with the inner side wall of the channel 11, and the interference fit amount is preferably between 0.08 and 0.1 mm; after the assembly is completed, the whole device is subjected to follow-up steps such as fine grinding processing, dynamic balance testing and the like.
The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (6)
1. The utility model provides a rotor shaft with cavity structure, includes pivot middle section (1), and set up respectively in two pivot side sections (2) at pivot middle section (1) both ends, its characterized in that: a through channel (11) is arranged in the middle section (1) of the rotating shaft; the magnetic steel (3) is arranged in the channel (11); two ends of the magnetic steel (3) are provided with magnetic steel protection structures (4); the rotating shaft side section (2) comprises a side shaft part (21), and a connecting part (22) is arranged at one end of the side shaft part (21); the side shaft part (21) and the connecting part (22) are hollow structures; the two connecting parts (22) are respectively inserted from two ends of the through channel (11) and respectively propped against two ends of the magnetic steel (3) so as to form a cavity structure at the two ends; the middle section (1) and the two side sections (2) of the rotating shaft are both made by wax injection technology.
2. A rotor shaft having a cavity structure according to claim 1, wherein: the magnetic steel protection structure (4) is a protection sheet, the protection sheet is round, and the protection sheet is arranged between the connecting part (22) and the magnetic steel (3).
3. A rotor shaft having a cavity structure according to claim 2, wherein: a clamping groove (221) is formed in one end, contacted with the magnetic steel (3), of the connecting part (22); the protection sheet is arranged in the clamping groove (221); the outer side wall of the protection sheet is in interference fit with the inner side wall of the clamping groove (221).
4. A rotor shaft having a cavity structure according to claim 3, wherein: the protection sheet is provided with an exhaust hole (41).
5. A rotor shaft having a cavity structure according to claim 1, wherein: the inner side wall of the channel (11) is in interference fit with the outer side wall of the magnetic steel (3).
6. A rotor shaft having a cavity structure according to claim 1, wherein: the outer side wall of the connecting part (22) is in interference fit with the inner side wall of the channel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849874.5U CN220234301U (en) | 2023-07-14 | 2023-07-14 | Rotor shaft with cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849874.5U CN220234301U (en) | 2023-07-14 | 2023-07-14 | Rotor shaft with cavity structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234301U true CN220234301U (en) | 2023-12-22 |
Family
ID=89177119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321849874.5U Active CN220234301U (en) | 2023-07-14 | 2023-07-14 | Rotor shaft with cavity structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234301U (en) |
-
2023
- 2023-07-14 CN CN202321849874.5U patent/CN220234301U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101222166B (en) | Punching method for motor stator/rotor plate | |
| CN220234301U (en) | Rotor shaft with cavity structure | |
| CN101596482B (en) | Paper shredding cutter and processing method thereof | |
| CN109713838B (en) | Switched reluctance motor | |
| CN213072329U (en) | Output shaft assembly and motor using same | |
| CN214495265U (en) | A inflatable shaft that is used for rolling after lithium cell is cut | |
| CN210452582U (en) | Bearing installation tool | |
| CN201187453Y (en) | Rotor of Roots blower | |
| CN216065112U (en) | Female die for punching six holes of automobile transmission shaft retainer | |
| CN111958210A (en) | Disassembling tool for tapered roller bearing iron retainer | |
| CN207961207U (en) | A kind of short-tail staking fastening kit, dismantling device | |
| CN201295724Y (en) | Combined positioning device for blanking processing | |
| CN202270906U (en) | Composite forging and stamping die | |
| CN211701773U (en) | Motor stator press fitting mould | |
| CN211681706U (en) | Sealing ring press-in tool for support bearing of vortex air compressor | |
| CN209682626U (en) | A kind of bore hole fixture head for glass workpiece | |
| CN210280544U (en) | Material ejecting device of forging press | |
| CN215703034U (en) | Self-adaptive jacking device for silicon rod | |
| CN214920136U (en) | Efficient and long-service-life rolling wheel retainer plate | |
| CN220037034U (en) | End face labyrinth impeller and diffuser structure | |
| CN214557480U (en) | Cutter for X-shaped sealing ring die | |
| CN2731143Y (en) | Inner ring free needle roller bearing for gear pump | |
| CN208456841U (en) | A kind of novel radial plunger structure | |
| CN219665015U (en) | Ring rolling die and inner ring forging | |
| CN210738617U (en) | Turbine expansion working wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |