CN217252855U - Air static pressure high-speed electric spindle based on titanium-aluminum-magnesium mandrel - Google Patents
Air static pressure high-speed electric spindle based on titanium-aluminum-magnesium mandrel Download PDFInfo
- Publication number
- CN217252855U CN217252855U CN202220256833.4U CN202220256833U CN217252855U CN 217252855 U CN217252855 U CN 217252855U CN 202220256833 U CN202220256833 U CN 202220256833U CN 217252855 U CN217252855 U CN 217252855U
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- Prior art keywords
- air bearing
- titanium
- magnesium alloy
- motor rotor
- mandrel
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- -1 titanium-aluminum-magnesium Chemical compound 0.000 title claims abstract description 33
- 230000003068 static effect Effects 0.000 title claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 9
- 239000010936 titanium Substances 0.000 abstract description 9
- 229910052719 titanium Inorganic materials 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000014392 establishment of spindle localization Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Motor Or Generator Frames (AREA)
- Turning (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a high-speed electric main shaft of air static pressure based on titanium almag dabber, including base, shell, titanium aluminium magnesium alloy dabber, thrust air bearing, supporting component and cooling module. The titanium-aluminum-magnesium alloy mandrel is arranged on the base, and the thrust air bearing is sleeved on the mandrel. The utility model discloses a dabber is titanium magnadure material, can improve the machining efficiency and the precision of electricity main shaft, increase of service life. The supporting component is arranged in the shell to support the titanium-aluminum-magnesium alloy mandrel, and the cooling component is arranged on the outer side of the supporting component and in the shell. The outside of titanium aluminium magnesium alloy dabber sets gradually toper motor rotor and motor stator, and toper motor rotor and motor stator all are located cooling unit's inboard. Furthermore, the utility model discloses still set up electric motor rotor into the toper, the diameter of its one end is greater than the diameter of the other end, can provide certain axial force when the motor is rotatory for thrust air bearing's atress reduces, is showing and is improving electric main shaft life-span.
Description
Technical Field
The utility model belongs to the technical field of high-speed electric main shaft, concretely relates to high-speed electric main shaft of air static pressure based on titanium almag dabber.
Background
The electric spindle has the advantages of compact structure, light weight, small inertia, small vibration, low noise, quick response and the like, and is high in rotating speed and power, the machine tool design is simplified, the spindle positioning is easy to realize, and the electric spindle is an ideal structure in a high-speed spindle unit. At present, a high-speed motorized spindle mainly adopts a rolling bearing support, a hydrostatic bearing support, a magnetic suspension bearing support, an air bearing support and the like. The high-speed motor mainly adopts two types of a three-phase asynchronous alternating current motor and a permanent magnet brushless direct current motor. The ultra-high speed processing needs to be adapted to a main shaft with higher rotating speed, and has the characteristics of high power and wide speed regulation range. However, in the prior art, the structural design, production, manufacturing and operation control of the electric spindle are complex and strict, the technical problems of heat dissipation, dynamic balance, support, lubrication, precision control and the like are difficult to overcome, the problems of short service life and insufficient machining precision still exist, and the structure needs to be continuously improved.
Therefore, it is necessary to provide a new electric spindle.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
For the problem that the electric main shaft life-span that exists is not enough among the solution prior art, the machining precision is not high enough, the utility model provides a high-speed electric main shaft of air static pressure based on titanium almag dabber.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
an air static pressure high-speed electric spindle based on a titanium-aluminum-magnesium core shaft comprises a base, a shell, a titanium-aluminum-magnesium alloy core shaft, a thrust air bearing, a supporting assembly and a cooling assembly;
the titanium aluminum magnesium alloy mandrel is arranged on the base, and the thrust air bearing is sleeved on the titanium aluminum magnesium alloy mandrel and is arranged at one end far away from the base;
the support assembly is arranged in the shell to support the titanium-aluminum-magnesium alloy mandrel;
the cooling assembly is arranged on the outer side of the supporting assembly and in the shell;
a conical motor rotor and a motor stator are sequentially arranged on the outer side of the titanium-aluminum-magnesium alloy mandrel, and both the conical motor rotor and the motor stator are positioned on the inner side of the cooling assembly;
the diameter of one end, close to the base, of the conical motor rotor is larger than that of one end, far away from the base, of the conical motor rotor.
In the air static pressure high-speed electric spindle, the diameter of one end of the conical motor rotor close to the base is preferably 4-6mm larger than that of the end far away from the base.
The aerostatic high-speed electric spindle is characterized in that the length of the conical motor rotor and the length of the motor stator are preferably 90-110 mm.
The aerostatic high-speed electric spindle preferably comprises a cooling channel and a cooling jacket;
the cooling jacket is arranged on the inner side of the shell and the outer side of the supporting component;
the cooling flow channel is arranged on the cooling jacket along the circumferential direction of the cooling jacket.
The aerostatic high-speed motorized spindle comprises a support assembly, a bearing assembly and a bearing assembly, wherein the support assembly comprises a bearing outer sleeve and a bearing inner container;
the bearing inner container is sleeved on the titanium-aluminum-magnesium alloy mandrel, and the bearing outer sleeve is arranged on the outer side of the bearing inner container and connected with the cooling assembly.
Preferably, the bearing housing includes a front radial air bearing housing and a rear radial air bearing housing respectively disposed at front and rear ends of the conical motor rotor and the motor stator, and the rear radial air bearing housing is disposed at an end close to the base;
the bearing inner container comprises a conical motor rotor, a front radial air bearing inner container and a rear radial air bearing inner container, wherein the front radial air bearing inner container and the rear radial air bearing inner container are arranged at the front end and the rear end of the motor stator respectively, and the front radial air bearing inner container and the rear radial air bearing inner container are arranged on the inner sides of the front radial air bearing outer sleeve and the rear radial air bearing outer sleeve respectively.
The aerostatic high-speed electric spindle as described above preferably further comprises a sealing end cover;
the seal end cap is disposed at a front end of the thrust air bearing.
The aerostatic high-speed electric spindle as described above preferably further comprises a spacer disposed between the thrust air bearing and the support assembly.
(III) advantageous effects
The utility model has the advantages that:
firstly, the utility model discloses regard as the preparation material of dabber with titanium magnadure, titanium magnadure's density is less, and has fine corrosion resistance, good plasticity and higher intensity, and in addition, titanium magnadure's mechanical properties is higher, and toughness and corrosion resistance are comparatively excellent, consequently can improve the machining efficiency and the precision of electricity main shaft, prolong the life of electricity main shaft.
Secondly, the utility model discloses set up electric motor rotor into the toper, the diameter of its one end is greater than the diameter of the other end, and this kind of toper structure of electric motor rotor can provide certain axial force when the motor is rotatory for thrust air bearing's atress reduces, improves thrust air bearing's the atress condition, realizes improving main shaft rigidity, electric main shaft's output and machining precision's technological effect, and improved electric main shaft's dynamic characteristic and thermal stability effectively. Therefore, the utility model discloses well electric main shaft after the improvement has the rotational speed height, advantages such as longe-lived.
Drawings
Fig. 1 is the overall structure schematic diagram of the aerostatic high-speed electric spindle based on the titanium-aluminum-magnesium mandrel in the utility model.
[ instruction of reference ]
1: a base; 2: a rear radial air bearing housing; 3: a cooling flow channel; 4: a cooling jacket; 5: a front radial air bearing housing; 6: a gasket; 7: a thrust air bearing; 8: sealing the end cover; 9: a front radial air bearing inner bladder; 10: a titanium aluminum magnesium alloy mandrel; 11: a motor stator; 12: a conical motor rotor; 13: a rear radial air bearing inner container; 14: a housing.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Example 1
As shown in fig. 1, the present embodiment provides an aerostatic high-speed electric spindle based on a titanium-aluminum-magnesium mandrel, which includes a base 1, a housing 14, a titanium-aluminum-magnesium alloy mandrel 10, a thrust air bearing 7, a support assembly, and a cooling assembly.
Specifically, the titanium-aluminum-magnesium alloy mandrel 10 is arranged on the base 1, and the thrust air bearing 7 is sleeved on the titanium-aluminum-magnesium alloy mandrel 10 and is arranged at one end, far away from the base 1, of the titanium-aluminum-magnesium alloy mandrel 10. In the embodiment, the titanium-magnesium-aluminum alloy is used as a preparation material of the mandrel, so that the machining efficiency and the machining precision of the electric spindle can be improved.
The support assembly is disposed inside the housing 14 to support the titanium-aluminum-magnesium alloy mandrel 10. The cooling assembly is disposed outside the support assembly and also inside the housing 14 for improving the overall heat dissipation capability of the electric spindle.
The present embodiment also provides a spacer 6 between the thrust air bearing 7 and the support assembly to allow for a more intimate connection between the components.
In order to further improve the motor spindle, in this embodiment, a tapered motor rotor 12 and a motor stator 11 are sequentially arranged on the outer side of the titanium-aluminum-magnesium alloy mandrel 10, and both the tapered motor rotor 12 and the motor stator 11 are located on the inner side of the cooling assembly. As shown in fig. 1, the diameter of the end of the conical motor rotor 12 close to the base 1 is larger than the diameter of the end far from the base 1, matching with the conical motor rotor 12, and the inner side surface of the motor stator 11 is also conical.
In the embodiment, the titanium-magnesium-aluminum alloy is used as a preparation material of the mandrel, the titanium-magnesium-aluminum alloy has low density, good corrosion resistance, good plasticity and high strength, and in addition, the titanium-magnesium-aluminum alloy has high mechanical property and excellent toughness and corrosion resistance, so that the processing efficiency and precision of the electric spindle can be improved, and the service life of the electric spindle can be prolonged.
The motor rotor is set to be conical, the diameter of one end of the motor rotor is larger than that of the other end of the motor rotor, the conical structure can provide certain axial force when the motor rotates, the stress of the thrust air bearing is reduced, the purpose of improving the stress of the thrust air bearing is achieved, the technical effects of improving the rigidity of the spindle, the output power of the electric spindle and the machining precision are achieved, and meanwhile the dynamic characteristic and the thermal stability of the electric spindle are effectively improved. After the electric spindle of the embodiment is improved, the electric spindle has the advantages of high rotating speed, long service life and the like.
Preferably, the length of the tapered motor rotor 12 and the length of the motor stator 11 are the same, and both are 90mm-110mm, and the outer diameter of the end of the tapered motor rotor 12 with the larger diameter is 40 mm. Specifically, the diameter of the end of the conical motor rotor 12 close to the base 1 is 4-6mm larger than the diameter of the end far from the base 1, and the optimal value is 5 mm.
Preferably, the cooling assembly comprises a cooling flow channel 3 and a cooling jacket 4. The cooling jacket 4 is arranged inside the housing 14 and at the same time outside the support assembly. The cooling flow path 3 includes a plurality of lines which are uniformly opened in the cooling jacket 4 along the circumferential direction of the cooling jacket 4. The housing 14 is connected to the cooling jacket 4 by interference fit.
Preferably, the support assembly comprises a bearing outer sleeve and a bearing inner container. The bearing inner container is sleeved on the titanium-aluminum-magnesium alloy mandrel 10, and the bearing outer sleeve is arranged on the outer side of the bearing inner container and connected with the cooling assembly.
Specifically, the bearing housing includes preceding radial air bearing housing 5 and the radial air bearing housing 2 of back that sets up both ends around toper electric motor rotor 12 and motor stator 11 respectively, and back radial air bearing housing 2 sets up in the one end that is close to base 1, and preceding radial air bearing housing 5 sets up in the one end of keeping away from the base.
The bearing inner container comprises a front radial air bearing inner container 9 and a rear radial air bearing inner container 13 which are respectively arranged at the front end and the rear end of the conical motor rotor 12 and the motor stator 11, and the front radial air bearing inner container 9 and the rear radial air bearing inner container 13 are respectively arranged at the inner sides of the front radial air bearing outer sleeve 5 and the rear radial air bearing outer sleeve 2.
The front radial static pressure air bearing outer sleeve 5 and the rear radial static pressure air bearing outer sleeve 2 are fixed on the cooling jacket 4 through bolts. The front radial air bearing inner container 9 and the rear radial air bearing inner container 13 are both arranged in the shell 14, so that the spindle component is supported. Similarly, the front radial static pressure air bearing outer sleeve 5 and the rear radial static pressure air bearing outer sleeve 2 are also fixed on the cooling jacket 4 through bolts and are respectively arranged at the outer sides of the front radial air bearing inner container 9 and the rear radial air bearing inner container 13 so as to support the titanium-magnesium-aluminum alloy mandrel 10.
Preferably, the aerostatic high-speed electric spindle of the present embodiment further includes a sealing end cap 8 disposed at a front end of the thrust air bearing 7 for preventing external dust and the like from entering the thrust air bearing 7 to damage the bearing.
The above embodiments are only for explaining the present invention, and do not constitute the limitation of the protection scope of the present invention, and those skilled in the art can make various changes or modifications within the scope of the claims, all of which belong to the essence of the present invention.
Claims (8)
1. An air static pressure high-speed electric spindle based on a titanium-aluminum-magnesium mandrel is characterized by comprising a base (1), a shell (14), a titanium-aluminum-magnesium alloy mandrel (10), a thrust air bearing (7), a supporting assembly and a cooling assembly;
the titanium aluminum magnesium alloy mandrel (10) is arranged on the base (1), and the thrust air bearing (7) is sleeved on the titanium aluminum magnesium alloy mandrel (10) and is arranged at one end far away from the base (1);
the support assembly is arranged inside the shell (14) to support the titanium aluminum magnesium alloy mandrel (10);
the cooling assembly is arranged outside the supporting assembly, inside the housing (14);
a conical motor rotor (12) and a motor stator (11) are sequentially arranged on the outer side of the titanium aluminum magnesium alloy mandrel (10), and the conical motor rotor (12) and the motor stator (11) are both positioned on the inner side of the cooling assembly;
the diameter of one end, close to the base (1), of the conical motor rotor (12) is larger than that of one end, far away from the base (1).
2. Aerostatic high-speed electric spindle according to claim 1, characterized in that the diameter of the end of the conical motor rotor (12) close to the base (1) is 4-6mm greater than the diameter at the end remote from the base (1).
3. Aerostatic high-speed electric spindle according to claim 2, characterized in that the length of the conical motor rotor (12) and of the motor stator (11) is 90-110 mm.
4. Aerostatic high-speed electric spindle according to claim 1, characterized in that the cooling assembly comprises a cooling flow channel (3) and a cooling jacket (4);
the cooling jacket (4) is arranged on the inner side of the shell (14) and on the outer side of the supporting component;
the cooling flow channel (3) is arranged on the cooling jacket (4) along the circumferential direction of the cooling jacket (4).
5. The aerostatic high-speed motorized spindle of claim 1, wherein the support assembly comprises a bearing outer housing and a bearing inner bladder;
the bearing inner container is sleeved on the titanium-aluminum-magnesium alloy mandrel (10), and the bearing outer sleeve is arranged on the outer side of the bearing inner container and connected with the cooling assembly.
6. Aerostatic high-speed electric spindle according to claim 5, characterized in that the bearing housings comprise a front radial air bearing housing (5) and a rear radial air bearing housing (2) disposed respectively at the front and rear ends of the conical motor rotor (12) and of the motor stator (11), the rear radial air bearing housing (2) being disposed close to one end of the base (1);
the bearing inner container is including setting up respectively before radial air bearing inner container (9) and back radial air bearing inner container (13) at both ends around toper electric motor rotor (12) and motor stator (11), preceding radial air bearing inner container (9) and back radial air bearing inner container (13) set up respectively preceding radial air bearing overcoat (5) and the inboard of back radial air bearing overcoat (2).
7. Aerostatic, high-speed electric spindle according to claim 1, characterized by further comprising a sealing end cap (8);
the sealing end cover (8) is arranged at the front end of the thrust air bearing (7).
8. Aerostatic high-speed electric spindle according to claim 1, characterized by further comprising a spacer (6), the spacer (6) being disposed between the thrust air bearing (7) and the support assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220256833.4U CN217252855U (en) | 2022-02-08 | 2022-02-08 | Air static pressure high-speed electric spindle based on titanium-aluminum-magnesium mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220256833.4U CN217252855U (en) | 2022-02-08 | 2022-02-08 | Air static pressure high-speed electric spindle based on titanium-aluminum-magnesium mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217252855U true CN217252855U (en) | 2022-08-23 |
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ID=82905347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220256833.4U Active CN217252855U (en) | 2022-02-08 | 2022-02-08 | Air static pressure high-speed electric spindle based on titanium-aluminum-magnesium mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217252855U (en) |
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2022
- 2022-02-08 CN CN202220256833.4U patent/CN217252855U/en active Active
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